Model Boat Mayhem

The Shipyard ( Dry Dock ): Builds & Questions => Pleasure boats, Sports, Race, Power and Leisure Boats: => Topic started by: Backerther on August 10, 2023, 03:00:17 pm

Title: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on August 10, 2023, 03:00:17 pm
Hi all, especially easy-going RC boaters like me.!! {-) %%
Here I finally got a nice "pla(stic)-model"(which we Japanese normally say) RC cabin cruiser kit, Chris craft Constellation 1/20 by Lindberg.  This will be my mid-summer-autumn project for this year.  :-))
One of my favorite cabin cruisers is Chris craft boats and this model kit is a just my good choice to build in the short term.
I intend to build this kit in easy-going pace to complete within this year. :-)) {-) %%
1/2/3; The kit arrived in these conditions.....far away from a certain continent spending 18 days.
4/5; The contents are 'way good than the package box. {-)  Well moulded bow!!
6; Amazing !!!! Here I found Japanese description in the instruction manual, though most of which don't make sense
   possibly due to poor automatic translation machine...???  Multi-language description is convenient if/as done by Tamiya
   in its kits.  But the intent to put Japanese description in the kit manual should be highly evaluated.!! O0 {-)
7; This height is fundamentally OK to get her sail stably on our local lake.
8/9/10; Comparisons with my Lindberg 1/32 PT-109


This Constellation 54 is classical but graceful which should meet my taste to get her gracefully run on the water...possibly.??
 :-)) O0 {-) %%
   

Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Dean's Marine on August 10, 2023, 04:16:20 pm
Hi backbether here is my one on test run,  shafts need oiling, this is a very rare kit now, ?
regards Ron
https://www.youtube.com/watch?v=NAdxvaEZA3U&t=67s

Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on August 11, 2023, 01:37:06 am
Hi Ron,
 So glad to have your kind comment on my posting.! :-))
Yes, I have watched your Chris craft Constellation several times so far for a good sample as well as your nice operation.
The most impressive and surprising is your awesome skill to control/steer the boat smoothly in the test pool. :-)) :-)) :-))
I can say confidently that I am completely unable to do like that.!! <:( {:-{ :embarrassed: {-) {-)
Perhaps I will refer to your Constellation in my building work.


Regards


Kiyo
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on August 13, 2023, 11:13:31 am
I just started the build by washing this pla-model boat intensively in the bathroom and she became very beautiful
as seen below.
The hull is well moulded in white and comparatively good fits for a tremendously old kit which original release
 is said to be around 1955, as far as I know...!!!!
1/2/3; Beautiful hull like The Snow White..?? {-)
4; Decks were already planked neatly..?? The remaining work is just painting only. ???
5; Sufficient space !!  Even two powerful Mabuchi 540 motors look very small for this pla-model boat. :-)) O0


I feel these motors may be too powerful for this classical type of boat...Chris craft seems to have released this type of
 Constellation with a fly bridge in the midst of preceding year.... {-) {-) {-)


She is not a MTB nor a modern luxury cabin cruiser, isn't it??   %% %% %%
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on August 20, 2023, 11:57:54 am
I started the building by setting two rudder posts as per the instruction manual.
But I did not follow the manual in the Z shaped linkage rod on its both ends.
I just fitted the rudder linkage temporarily to see how good it would be.
And also I added simple reinforcement wood pieces behind the rudder posts which are vitally serious
to sail on the large lake at a bit fast speed away from the shore... :-X >>:-(
Expected misery at worst on the lake might be a drift far far away from the shore.... <:( <:( 
 
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: derekwarner on August 20, 2023, 12:17:31 pm
Kiyo....
A 'bent bit of wire in a Z' is false economy, as a potential for failure  <*< .......far safer using properly designed components  :-)) ........


Derek
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: JimG on August 20, 2023, 09:27:49 pm
Kiyo....
A 'bent bit of wire in a Z' is false economy, as a potential for failure  <*< .......far safer using properly designed components  :-)) ........


Derek
Actualy nothing wrong with a properly made z bend in a rod. I have used them for many years on model aircraft where reliability is much more important than in a boat. Either get a set of z-bend pliers or learn how to make them correctly and they work well. Also important to make sure the hole in the horn is correctly sized for the rod and not too loose.
Jim
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: derekwarner on August 20, 2023, 11:27:21 pm
I knew my words would create comment Jim .....& I did say potential......
Have seen a not-so-young Moddeler create a Z Bend with a pair of Knipex Wire Cutters >>:-( ...complete with shiny tight 90 degree bends O0 ...so acknowledge your words as 'properly made'


Derek
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on August 21, 2023, 06:58:27 am
Thank you for your comment and opinions on my rudder linkage set-up, Derek and JimG. !  :-))
These arguments are very useful and informative to me just because they are from your precious experience and
knowledge obtained in the past.  O0
I feel generally as follows from my experience about Z bent rod end and rod end retainer as used in the previous image above.


Z bent rod end; ultimately reliable, a bit hard to cut precisely to reqired length with tight 90 degree curve in any diameter
          of rod, sometimes apt to be loose in the hole of tiller arm generating a "Play" in the movement.
Rod end retainer; Anxious about loosened hollow screw to retain the rod, easy to set and adjust required length between              the tiller arms, actully no play in the tiller arm and whole linkage...


1/2; My old Z bender I bought close to 40 years ago still in service sometimes..
3; Z shaped 1.5mm rod by this Z bender...possibly OK for this dia of rod...a bit hard to set a tiller arm without enlarging
   the hole of tiller arm...
   A 1.8mm dia rod is terribly hard to get tight curve for me. {:-{ %)
4;Linkage in my Lindberg 1/32 PT-109. No problem at all as of today despite of hard sailings on the lake. :-))




             
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Martin (Admin) on August 21, 2023, 09:05:31 am
 
Ha!  I just found and used mine after 25 years!
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: ChrisF on August 21, 2023, 10:03:03 am
I used one of those screw down connecters initially on the rudder arm in my River Cruiser but that, along with the ball joint connecter meant there was no play in the system and the servo kept buzzing when returning to centre. Replaced screw down connecter with a clevis type and threaded rod which provided a bit of slack and problem sorted.

So many different ways to make linkages.

Chris



Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on August 21, 2023, 11:54:20 am
Certainly, yes.!   I think so too, Chris.  O0
It is entirely dependent upon a personal experience and his favorite style, using various types of ready-made or
hand-made linkage parts. :-))


Kiyo
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Circlip on August 21, 2023, 12:04:09 pm
Oh what a relief when the Cobra and Jet Ranger kits appeared with ball (Both open and closed) joints.   O0


 Regards  Ian.
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on August 22, 2023, 09:41:03 am
In the next place, I added chine rails to the hull based upon my good experience of the Lindberg 1/32 PT-109
which was successfully test-run nearly a year ago with the assistance of chine rails as seen in the pics below.

She could turn stably at higher speed regardless of low draft and narrow hull.
This Constellation is originally not a fast boat like a MTB but I intend to have her only given a capability to run fast. {-) :embarrassed:


1/2/3; My PT-109 ran splashing the water aside neatly out of the hull bottom.
4/5/6; My Constellation has been installed with chine rails expecting a good result as in the PT-109.
 My Constellation may possibly be a wolf wearing a furs of sheep on the lake...?? %% %% {-) {-)
   The profile is mild and calm, but it would be soon brutal once it started... {-) {-) {-) {-)
 


Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on August 23, 2023, 11:59:54 am
For the health' sake, I went to world's famous ? Akihabara town in Tokyo by tube, spending about 3 hours
rambling around the town. True purpose is just to buy two universal joints made of plastics (so-called engineering plastics,
perhaps, Ny).
I used the same type of joints in my Lindberg 1/32 PT-109 and they have been working very very well enough.! :-)) :-))
Anyhow, very calm.


1/2/3; It's a week day today but crowded with so many people most of whom are foreign sightseers usually.
      These scenes are not unusual at all and Chinese sightseers in groups are estimated to increase especially and
      susbstantially from September drastically. O0 %% :D :o {:-{
     Akihabara is presently no more electric town as it used to be, but figurines and dolls town for the grown-ups.
4/5; I bouht these two couplings 3mm dia on both ends. They just look toyish but true "hobby grade", not to say
       industrial grade. {-) {-) {-)


Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on August 25, 2023, 12:41:30 pm
I made a removable swimmer's deck as shown below.

Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on August 27, 2023, 03:06:46 am
"Two hearts" of the boat have been built as in the followings;


1; Small one is the kit-furnished motor, possibly RE280 or260class both of which will sufficiently do if run with nostalgic
       atmosphere as her style.
2; One end of the coupler has been enlarged in its hole to allow for a 1/8 inch(3.17mm) dia of the RS540 shaft.
    Original holes were 3.0mm on both ends.
3; Water jackets were set.
4; Two hearts were ready.!!
5/6; The motor bracket was made and the motors were set temporarily.
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: ChrisF on August 27, 2023, 03:47:05 pm
Didn't fancy brushless then?

Chris
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on August 28, 2023, 04:58:35 am
Chris
No, I didn't fancy to use the brushless motor at all from the beginning.
The reason is very simple. This is so classical type of boat that I think doesn't need such a powerful and expensive
brushless motor. Traditional and normal brushed Mabuchi RS 540 motor I think will do my expectation to the boat.
The Mabuchi RS-540SH is only USD7.5(JPY1,100 )here in Japan. %%
Even two Mabuchi 540s may possibly get the boat to be able to run faster for the classical boat that is my ambition. {-)

The PT-109 in the following video is sailing by two Mabuchi 540s , which speed is satisfying to me. :-)) :-)) :-)) https://www.youtube.com/watch?v=R7QKh8ptwj0 (https://www.youtube.com/watch?v=R7QKh8ptwj0)

Kiyo
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on August 29, 2023, 05:23:03 am
One of the most important works when building a RC boat is this, isn't it ?? O0
Alignment between the motor shafts and screw shafts is always troublesome to adjust correctly for performing
the best, smooth and calm revolutions of the screw props. Twin screws are further troublesome.... {:-{ %%
Calm revolution is especially indispensable for us to run the RC boats in our local lake in order not to get
other visitors to feel some kind of bad impressions, by which we are actually authorised tacitly to enjoy this hobby. :}
Attention to the silent sailing of my PT-109 even at high speed in the video shown just above. :-)) :-))

I could have successfully done like these with two motors. :-))
I set motor bracket locators for permanently gluing in the near future.
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on August 30, 2023, 06:33:38 am
I made 3 pieces of radio gear decks from scrap material.
3 coats of varnish were applied briefly.


It was very simple to do with enjoying a cup of cold coffee in the air-conditioned work room. {-) %% :-))
Later on the day,I could win the Othello game two consecutive times against my wife who became a bit grumpy
by the result. Oh, no!! I am not the man who is to be blamed. {-) {-) {-) {-) {-)


It was a very happy day, all day long.!!
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on August 31, 2023, 07:01:37 am
I made two sets of stern tubes with grease fillers as in the pics below.


1; I used 5mm outer dia tube for grease filler against 4 mm outer dia stern tube.
2; I drilled 4mm dia hole in the 5mm tube.
3/4; I confirmed if well done and removed a bit of burrs.
5; This time I drillled a hole in the stern tube.
6; Now two sets of stern tubes with grease fillers were set for temporary test.
7; Soldering the tubes are very easy to do with less positioning works between the two different tubes. {-) :-)) O0
8; Grease filler caps were added.
9; Final work was cosmetic painting. :D :embarrassed: ;) :-))
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on September 01, 2023, 07:04:25 am
I have at last come to this process of installing the stern tubes permanently which is very sensitive ,nervous and
careful to do always to me.  O0 {-)
I used 10min,30min and 90min epoxies dependent upon the places to bond.
1; I first bonded the grease fillers to the hull with 10min and 30min epoxies.
2; Nextly stern tubes with 90min epoxy which is sooo fluid that it easily came to soak along the tube through the
   hull to the outside. It took nearly 24hrs to completey set. I applied tapes at the bottom of hull to refrain from
   soaking out. O0 {-)
3; After getting dry inside the hull, this time from the outside of hull, 30min epoxy was applied after setting tapes
   to get a neat result of epoxy coats.
4; The result was so so ...??  {-) {-) {-)
5; Overall image
6; Bonding in the hull is over and positioning jig is removed.
7; Reinforcement supports were added
8; Everything was well done like this. :-)) :-)) :-))


I am satisfied with this result and felt at ease. %%
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on September 02, 2023, 09:31:43 am
I finally installed the motor assemblies to the hull with a glue gun which most of you may say

"incredible way and weak to bond". :D O0 :embarrassed:
But I think it OK perhaps as far as the motors will work silently ,smoothly as seen in my Lindberg  PT-109. :-)) :-))
This EVA-based plastic glue is comparatively strong to bond, and a bit soft and flexible to hold the motors in place.
[size=78%] [/size]
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on September 03, 2023, 08:36:28 am
The build is going to the substantial stage of installing the steering system and water inlets.
1/2; O rings and washers were set.
3; Stoppers were also set for easy maintenance of rudder posts and screw props as well as screw shafts.
4; I made two water inlets out of aluminum pipe.
5/6/7; I glued the water inlets with 30min epoxy.
8; Overall image up to today.
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on September 04, 2023, 09:18:03 am
I disposed of cooling water tubes as in the pics below.
I paid a bit attentipn to the laying works not to get the tubes to vibrate or swing at higher speed for fear of the them
being off the water inlets or cooling jackets.
Should the accident take place on the water, it should be fatal to the boat running far away from the shore
on the lake.!!! <:( <:( <:( 8) 8)
1; tied up securely not to be off the inlets which failure may "securely guide" the boat to the bottom of the lake.... <:( <:(
2; After setting the tubes at the water inlets, the steering servo-motor platform was glued in place.
3; Settleing the tubes securely using these parts under the plllatform.
4; Laying the tubes as much neatly as possible. O0 O0
5; To the water cooling jackets through the motor bracket wall, to avoid unfavorable vibration of the tubes.
6; Intermediate condition of laying the tubes.
7; Cooling water outlets
8; Needless to say, they were set on both sides of hull.
9; Port side view
10; This is a cleaning tube for water cooling tubes normally used after the sailing of the day which is very important,
      isn't it ?? :-)) :-)) :-))


Next work is supposed to enter the installing the radio gears on the platform. !! :-))
   
   
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: JimG on September 04, 2023, 11:33:55 am
The cable ties you are using on the inlet tubes are not a good idea as they can cause leaks. When done up they are not round and lead to one side of the tube not being clamped on and water under pressure can force it's way past. Some soft copper or aluminium wire wrapped twice round the tube then carefully tightened by twisting the ends together will give a good seal. You can buy tubing clips intended for the fuel lines in model aircraft which will work well.
Jim
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on September 04, 2023, 02:52:54 pm
Thank you for your kind comment and I understand what you mean.
What you have mentioned I do think is theoretically true. O0
I have ever experienced such phenomenon under rather high pressure in my RC models like RC planes and RC boats as you said.
However, no problems could be seen in this part of usage at all from my experience.
And if a bit of water leaks should take place, it's not a major issue.
True aim of this ties is intended not to get the tubes off the water inlets.


Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on September 06, 2023, 04:00:56 am
I settled a steering servo down and set a non-slip rubber for a battery not to get it to move.
The battery space is sufficient enough to move fore-and-aft, left and right for an easy ballast adjustment.
1; A servo is, of course, Futaba make for me.
2/3; Set neatly on the platform.
4; Non-slip rubber sheet was set.
5; I enables the battery to stay firmly in place together with O rubber bands.
6; An overall view.
7; Put the deck temporarily to see if everything goes well.
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: derekwarner on September 06, 2023, 04:47:28 am
Kiyo......all of your images are looking toward the Aft end of the vessel...OK  O0
Yet you label motors and rudder L for left, but we see them on our right hand side


Is this because I live in the Southern Hemisphere  %) , and every thing is backwards or upsidedown?, or do the people in England see things differently to me  {-) , or would it help if I stood on my head?  >>:-(


All good fun.....


Derek
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on September 06, 2023, 06:18:35 am
Hi Derek,
Thanks for always interesting, friendly and impressive comments on my postings. ! :-))
I did not notice at all what you indicated and which is truly to the point.
My pics in the past might have you confused a bit at a glance of the pics in which
L or R were written.  {-) %% O0




"All crews!, make bow saying sorry to Derek" {-) %% :D

Kiyo from the north hemisphere
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on September 07, 2023, 02:51:50 pm
I made a pair of screw prop ass'ies using 3mm dia brass rods as orininal prop shafts in the kit came too short for my motor arrangement.
I did hardly follow the instruction manual concerning the power system partly
because I had changed the motors to Mabuchi RS540SH from RE280 class motors in the kit.
1; I made the thread on one end of 3mm brass rod a bit poorly. {-)   The kit shaft is 3.17mm dia which became too short for my configuration of the power system.
2; Screw props I adopted were 34 mm dia 3 bladed while the kit props were 31mm 2 bladed.
3; "New props" were modified a bit to suit for the new 3mm rods.
4; Assembling the ass'ies of screw props.
5; I made two pieces of plastic washers out of thick sheet as there were no stocks in my part box.
6;CW and CCW
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on September 08, 2023, 09:24:39 am
I installed the screw props in the stern tubes to see if they revolve properly
i.e. they are calm and smooth when rotating at mimimum voltage by dry cell.
I used 1.2v Nimh for about 10 seconds since no lubrication had been made inside
the tubes at all. Just a short test if they should go well as a substantial test will be made when all is up with a full lubrication on the work bench. O0

1; Left motor showed 1200RPM with a 1.23V battery.  Smooth with no irregular sound
2; Right motor 1100 RPM with a slight vibration by the bad thread drilled by my poor skill....
 A bit of irregular sound that must be improved somehow later.
3; CW and CCW
4/5/6; Profiles are not bad.... {-)

Right prop shaft is supposed to re-make again by precisely threaded possibly. {:-{
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on September 09, 2023, 08:44:47 am
Everything has come here successfully but come up a little problem due to new props which are larger than kit-furnished ones greatly.... {:-{ :((
Therefore I was obliged to cut a bit of the rudders not to disturb the props motion.


1; Good gracious !!! :o
2; Cut !!
3; Reshaped !!
4/5; Well done easily :-))


This pla-model boat is coming to its final stage of drive system set-up started about a month ago... O0 :D :-))
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: derekwarner on September 09, 2023, 08:55:22 am
So Kiyo says.......


1; Left motor showed 1200RPM with a 1.23V battery.  Smooth with no irregular sound
2; Right motor 1100 RPM with a slight vibration by the bad thread drilled by my poor skill....

No Kiyo,.....not your bad skill.... %)

Brushed motors by manufacture [are usually] designed to be singular direction...so the carbon brush holders are offset by a few degrees to the axis of the armature

This can result in a motor with reversed to normal polarity, providing such a small difference in the presentation of the axis of carbon brush to the direction of the armature, with the resultant [lower] variation of speed

You will find, with accurate electronic test equipment, that the motor with the lower speed is actually drawing marginally higher current  and the greater noise is an arc sound between the brushes & the comuntenator O0


In earlier brushed motors, a two speed function was attained by having 3 pairs of brush sets, one pair normal at 180 degrees, then the 3rd pair set at an angle +/- 180 degrees. The +/- offset pair was the starting function with higher current, then at speed, switched over to the 180 degree offset pair of brushes which consumed lower current %%


I think one of the German MARX Hectoperm/Monoperm/Pile range of model motors from the 70's had this "3 pair of brush sets' as standard feature  .??

Derek
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on September 09, 2023, 09:20:45 am
Derek;


Thank you for kind and informative comment which is very specialised information to me and I didn't know it at all
up to now.... :embarrassed: :D
I have ever experienced such phenomenon several times so far and felt something strange. I understood the slight and irregular sound generated at my small pla-model boat under construction.  :-)) ok2 %)
 In reality, with a newly threaded screw shaft, the slight vibration has been largely eliminated and I felt like the sound has
also a bit decreased. The former right shaft was a slightly eccentric... :embarrassed:
 
Again thanks, Derek


Kiyo
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on September 10, 2023, 05:44:07 am
Well, It's a final stage of set-up of power system at last. 🎵~♫~♪~♬~(^^♪ %%
1; Drilled a square hole for short cut of servo lead through the wall.
2; Passing the hole for the linkage to the receiver
3; Neatly set up
4; Connected to ESC
5; To the receiver
6; To the lipo
7; The small pla-model boat but spacious enough to accommodate the whole power system required running
    on the large lake at daytime.
 A simple working test to follow.!! :embarrassed:
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on September 11, 2023, 03:57:29 am
I made a brief test of to confirm if the steering angle and motor revolutions are correctly might go well.
However, motor tests were done in a limited time and the times as it is not on the water. !! O0
1; All up !
2; Greas was fully charged.
3; I stopped the test of high revolution at this level.  True test will be done later on the water expecting high speed. :-))
4; Slow test was Ok with this level.
5/6; Max angle of tiller arms and rudders which are also Ok with smooth movements. :-))


It's about the time to think of color scheme.... O0
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on September 12, 2023, 06:20:48 am
I made a balance test in the bathtub briefly and knew the first setting was a bit front heavy.
But could fix the balance point only moving the Lipo a bit backward. Final balance has to be done and decided
after fully completed.

1; After adjusted, close to 1cm lower than planned draft line at bow.
2; The same at stern.
3; The battery came unintentionally just under the main opening at this stage. {-) {-)


Well, I will go to assemble the structures of upper deck like I used to do in my younger age pleasantly. %%
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on September 13, 2023, 08:02:53 am
Final set-up of the drive system is now complete with the adequate balance adjusted at this stage. :-))
Building process will go into an easy and happy assembling of the pla-model boat, which I intend to enjoy the
process.  :-)) %% {-)
Maiden voyage is.......is.......around mid-October???  The season of the north wind is the best to run on our local lake.


But I dislike very much such the north wind for my tiny Chris craft Constellation as to get the RC boat to jump like a flying fish even in October. {-) {-) {-)
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on September 17, 2023, 11:42:27 am
Here are the latest update of what I call pla-model assembly. The pics show only temporary fitting to see how the parts go
well for final assemlies after painting. I have to check them carefully enough at this stage before painting. O0
All the rest is just painting works which must not be hastened to do as it will be the last and one of the most important
jobs which is not to be failed...!!!! Or the result and jobs in the past are miserable and desperate for this project. <:( O0
I'm going to take sufficient time in color scheme study and the subsequent painting works. O0 :D
With the addition of swimmer's deck at transom, overall length has exceeded 80cm (31.5inches).

Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on September 23, 2023, 09:16:38 am
It's been difficult to find the best weather for painting to do outdoors in these days here.... {:-{
Instead, I did a very simple but effective and cruel surgery to the legs of the crew today to get him to sit on
properly the captain's seat. The result?....>> Certainly yes, of course, everything went well as seen below. {-) :-))
1; His legs were tooo long for his height though he is possibly scaled down to 1/18......
2/3/4/5; I made a surgery operation to the parts for getting him to grip the wheel properly....He looks happy as
          he could come to grip the wheel comfortably neatly sitting on the seat, couldn't he? :-)) :-)) {-) {-) O0 O0
6; I also get a co-captain to sit beside him for safe sailing?  But I am really wondering if I should seriously get her
     aboard the boat as she is..??? O0 {-) %% :(( :o %) :kiss:
7/8/9/10; Temporary fitting to see how they look in the helm deck... Fundamentally OK to me at this level. :-))



Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on October 05, 2023, 12:59:29 pm
Yes, !! This is truly a pla-model boat. !!   O0 {-) :-))
I painted a gloss red but just it looks too glossy for me....That's why this is a pla-model... {-) {-) {-)
I'll leave it as it is over two or three whole days for a complete dry.
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on October 10, 2023, 11:41:51 am
I could happily find the time to work with my Chris craft Constellation today and polish her intensively before gluing the upper
deck onto the hull.
Under present pace of building the boat, maiden voyage is likely to take place in mid- November when my favorite north wind
could be expected to blow...??? O0 {:-{ {-)

Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on October 12, 2023, 08:52:05 am
I just painted simulated plate color of chrome silver for the stanchions and the like for my Constellation as trial before
true paint works.
The result ..??? is so so for me as usual.  O0 {-) :-)) {-) {-)


The anchor in the pic is silver.
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on October 15, 2023, 01:03:06 pm
Rough image of my Constellation has come up with these pics.
I just put together temporarily the parts already painted as of today to see how she looks... so so....?? {-) O0 %%



Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on October 18, 2023, 12:57:18 pm
Hi all !
Allow me to introduce my wonderful mates aboard the Constellation 1/20 to you hereby.
As of today, 4 mates applied for my recruit to work aboard the classical boat of Chris craft. {-) {-) {-) %% %% :-)) :-)) :-))





Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on October 21, 2023, 11:50:41 am
The main hull is nearly complete at last.....   The main deck was glued permanently to the hull.!!

Slow but steady....?? {-) O0    "Slow and steady wins the race??" My pace of building is tooooo slow like a snail.. {-) {-) {-)
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on October 26, 2023, 12:33:17 pm
Pics for today are cabin assembly under construction like to glue window glasses, curtains and sunshades. %%
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on October 28, 2023, 09:55:23 am
I glued some little fittings around the hull today. They are mainly chrome-plated parts by which the model has become
a bit realistic and generated an atmosphere of classical Chris craft Constellation....??  {-) %%


Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on October 31, 2023, 11:39:59 am
A skit for today is...


1/2;All the crew and passengers at the moment.
3; "Hey ,you  Backerther ! when do you intend to commission the Constellation, it's autumn already
      I feel cold with this swimwear I bought  this summer.!!!! >>:-( "
4;"Certainly yes,...we also bought the boarding tickets for this September...." {:-{ :((
5; "So do I as a skipper in charge for this Constellation"


 {-) {-) {-) {-) %% %% %%
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on November 04, 2023, 05:35:43 am
Swimmer's deck to be installed at transom is now complete like this.
The deck is easily detachable since merely installed with double-sided tape.
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on November 06, 2023, 08:03:57 am
Swimmer's deck was installed with double-sided tape formally in place though detachable.
This Constellation has gradually become like a bit realistic with attaching additional parts like this.  {-) %%
It's about 3 months since starting this short-term project for the summer/autumn and getting into final stage
during which I am enjoying the building to form a real cabin cruiser like style. {-) %% :-))
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on November 07, 2023, 06:16:23 am
The hull is nearly complete.   O0 :-)) :D :embarrassed: %%
By adding some figures aboard the boat, I feel some sort of realistic atmosphere in the model seems to be generated
by which the boat itself might come and look alive like a diorama model, especially when putting on the table.... {-) {-) :-)) :-))
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on November 08, 2023, 02:08:31 am
The cabin assembly is also now nearly complete.  O0 %% :-))
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on November 09, 2023, 01:49:37 am
And life boat was built after simple painting...though very useful item to add more scale realism to this pla-model boat. :-)) :-))
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on November 10, 2023, 02:17:31 am
I finally installed the life boat at transom as seen below.!! %% O0 :-))
This pla-model is sufficiently enjoyable to build for ME as the short-term project and could be expected to run on our local lake
as I had expected that it should be.!  :-)) {-) {-)
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: JimG on November 10, 2023, 11:58:52 am
The dinghy really needs to be strapped down onto chocks on the swim platform. Hanging from lines as you have will lead to the dinghy hitting off of the transom in any waves.
Jim
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: 1967Brutus on November 10, 2023, 06:02:55 pm
The dinghy really needs to be strapped down onto chocks on the swim platform. Hanging from lines as you have will lead to the dinghy hitting off of the transom in any waves.
Jim


In real life, at least over here, I often see a dinghy stored that way, not on chocks but hanging in the runners and tied to the yacht (usually with some fendering inbetween) by lanyards to prevent it from swinging.
In real life the dinghy is easier and quicker to launch that way because you don't need to tie down the dinghy on chocks, and don't need to hoist and swing out when launching.

Fairly easy to imitate that in model...
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on November 11, 2023, 05:58:56 am
Hi JimG and 1967 Brutus,
A great thanks for your kind comments and informative opinion on my posting about the dinghy installation.
Both of your thoughts are quite agreeable as well as persuasive ,and even I had understood previously the point you
refered to from my experience of sailing Rc boats on our local lake.


The pics above are merely in the course of building simply based upon the instructions and not finished as a RC boat to sail
on our local lake. In this sense the pics are "pla-model mode" currently and it will be additionally installed with RC capable
works like water-resistance and reinforcement needed to run on our large and wavy lake.


Currently the dinghy is attached comparatively securely at transom by double-sided tapes actually and the thread are just
for scale appearance that will be of subsidiary function to hold the small boat.
After maiden voyage, I will re-study the better method to hold the dinghy if necessary. O0
 
Our lake is large and wavy especially in the winter for RC boating to which it is going ... <:( {:-{ O0

https://www.youtube.com/watch?v=OD77w3TIit0&t=77s (https://www.youtube.com/watch?v=OD77w3TIit0&t=77s)
https://www.youtube.com/watch?v=AmFTpU2CVXA

Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: 1967Brutus on November 11, 2023, 07:03:10 am

Currently the dinghy is attached comparatively securely at transom by double-sided tapes actually and the thread are just
for scale appearance that will be of subsidiary function to hold the small boat.



For practicality, that is more than enough, no need to change anything.


For scale appearance a few lanyards simulating to tie the boat to the transom (which function is actually taken care of by the double sided tape) would complete it fisually, but that entirely depends on whether that kind of detailing keeps you awake at night.
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on November 11, 2023, 01:27:49 pm
I will possibly add some more detailing works if I could successfully run a maiden voyage on the lake to which
I am currently going to finish the model.  O0 :-))
Thanks for your kind comment.  :-))
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on November 12, 2023, 07:51:52 am
The pics for today are nearly final images on a pla-model basis except some decals to be applied.
Overall length is about 83cm(32.7 inches). Weight with a lipo battery 5000mAh2C is about 2.8kg(6.2pounds) that will
power 2 Mabuchi 540 motors, which power system and the light weight are expected to run very fast for the classical type of boat..... {-) {-) {-) But I intend to run her at scale speed on the lake unlike my 1/32 PT-109. O0 O0 O0

https://www.youtube.com/watch?v=R7QKh8ptwj0

Final RC capable works will follow to the images below such as installations of radio antenna, main switch, water-resistance
process and balance check in the bathtub and the like after final cosmetic checks.
RC maiden voyage is supposed to carry out later this month when will possibly be cold.....?? <:( {:-{ :(( {-)



Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on November 13, 2023, 02:35:59 am
The first balance test in the bathtub was slightly front heavy, though the draft was OK with full loads by my standard. O0 {-)
Later I will adjust properely the front heavy condition with some ideas. :-))
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on November 15, 2023, 05:44:36 am
The pics for today are of a radio antenna and a main switch for RC sailing.
The antenna is foldable for the convenience of transportation to the sailing spot and storage in the room. :-))
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: 1967Brutus on November 15, 2023, 08:16:27 am
No 2,4 GHz?

One of the GREAT advantages of 2,4GHz is that the antennas are extremely easy hidden...

And nowadays, that stuff is very affordable.
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on November 15, 2023, 11:07:09 am
I have lots of FM radios for RC airplanes and crystals (including ground use) that I used to install on them. :-)) :D :embarrassed:
There is no need for me to buy additional radio systems than I have now and this is the economical way of hobby life
for a poor man like me. O0 {-)


Attention; Sixth image is not a real one taken in WW2 but my model Nakajima Hayate (US code name: Frank). {-) %%
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: 1967Brutus on November 15, 2023, 11:38:35 am
:D :D :D Seems to me, you're not all that poor, you've got more planes (ands prettier ones) than me :D :D :D


But I see your point, no need for stuff you allready have...
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on November 16, 2023, 02:16:42 am
The second test of boat balance went very well as seen below. :-)) :-)) :-))
Draft line was nearly perfect along the planned water line. O0


Maiden voyage is coming close if the weather should be OK on our local lake. {-)
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Martin (Admin) on November 16, 2023, 04:34:33 pm
 
Found this Facebook....  :o


(https://i.postimg.cc/8zpsgJbs/400476398-2674576352680686-8188810484386890671-n.jpg)

(https://i.postimg.cc/qBKNsdRB/399641486-2674576459347342-6598318780896763895-n.jpg)
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on November 17, 2023, 01:47:01 am
Thanks for nice pics, Martin !!  :-))
Judging from the figures aboard the boat and a 1/1 living figure, theirs look much much larger than mine...around 1/10 or more?.. O0 {-)


By the way, mine is nearly complete. The rest I should accomplish successfully is a long-waited maiden voyage except which this is not to be called a "RC boat" by my standard, but it should be merely called an easy "RC-able pla-model boat" to build. O0 {-) %%
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on November 18, 2023, 12:53:30 am
I took some pics of my Constellation in commemoration of interim completion as a pla-model basis. {-)
This is because she must be the most beautiful at this stage and will possibly and definitely be deteriorated gradually through
repeated severe RC sailings on our local lake in the near future.  {:-{ :(( O0 {-) 
In this sense, she is destined to be a true RC runner on our local lake in spite of a mere pla-model..!!?? {-) {-) {-) :-)) :-))
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: 1967Brutus on November 18, 2023, 10:50:27 am
That's a clever thing to do!

Because no model ship will stay beautiful indefinitely and sometimes it happens quicker than anticipated: I dropped my Alexandra on the floor this morning...
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on November 18, 2023, 11:39:28 am
Oh, my goodness, I'm so sorry to hear that....Is she heavily suffered from damage ?...
Well, I also have to conduct myself not to damage my Rc models when moving not only outdoors but also indoors... :((

Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: 1967Brutus on November 18, 2023, 12:19:18 pm
The damage was not too bad... but it was just a few hours after I painted on the waterline, and the paint was not yet fully cured, making things "emotionally" a lot worse... Just because of the stupidity and pointlessness of it all... :D :D :D


Can laugh about it now, but a few hours ago I was beside myself...
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on November 19, 2023, 08:06:59 am
I made a simple boat stand with a name plate to transport to the lake and to store in her sleeping shelf. :-)) %%
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on November 20, 2023, 07:26:12 am
As next preparation work for transporting my Constellation to our local lake, I made slings briefly as in the pics below. O0 :-))
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: ChrisF on November 20, 2023, 09:18:53 pm
That's turned out really well.

I look forward to seeing it perform on the water.

Chris
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on November 21, 2023, 03:05:50 am
Chris,
Thanks a lot for your kind comment.!!
I wish she could sail safely and gracefully on our local lake to take place in the very near future like the pics below. O0
My latest cabin cruiser Constellation is coming out to the large lake at last after 3 month building works in cradle seeking for
both a good appearance and a good performance...!!?? :-)) {-) {-) {-)


Kiyo
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on November 21, 2023, 03:39:26 am
Brief water resistant process was made before maiden voyage which may take place on the calm water under/around1 m/s north
wind in our local lake for safety.
This Constellation has comparatively high sides for this class of model boats by which I think is a bit advantageous in terms of seaworthiness as compared with Lindberg PT-109 1/32 that has shown already a good performance on the same lake. :-))
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on November 22, 2023, 07:32:54 am
The last work before the maiden voyage is an installation of a digital V meter which is indispensable for me who to sail
the RC boats on our large lake. O0





Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: 1967Brutus on November 22, 2023, 11:18:15 am
The last work before the maiden voyage is an installation of a digital V meter which is indispensable for me who to sail
the RC boats on our large lake. O0


If I may be so blunt as to make a suggestion?

There is nowadays lots of relatively cheap radio gear availlable that come with very affordable telemetry options.

Back when that type of equipment came to market, my strong knee=jerk reaction was "what for???" but now that I have it, I find myself installing the stuff in ALL of my planes, helicopters and boats. It offers unlimited options for signalling or alarming the parameters you think are important to monitor.

And I honestly have to say, I would not have come near half as far with the development of my gasoline conversions, or my steampowered boat if it wasn't for the ability to see what is going on in the model when it is out on the water or in the air.
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on November 22, 2023, 01:34:37 pm
As you may easily imagine, this V meter is just like a fuel gauge for a combustion engine car.
I make it a practice usually to sail a RC boat of this class for two times in one 5000mAh lipo.
It is sooo meaningful to know the V value each time after the first sailing at a glance by this V meter(without using tester).
At the same time, I usually carry so called a kitchen timer around my neck to grasp the running time previously set depending
on "the rest" in the battery.
Generally speaking, it is about 8 through 14 minutes run in one 5000mAh battery lipo depending upon my style of sailing.
From the above, it is indispensable for me to know easily the battery conditions always before/after each sailing. O0
"Fuel out" on the large lake will go ....??? {-) {-) <:( <:(


Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: 1967Brutus on November 22, 2023, 06:01:12 pm
It is sooo meaningful to know the V value each time after the first sailing at a glance by this V meter(without using tester).


Imagine, that you can read that value on the display of your TX... Any time you want, before, after, but also DURING operation...
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Dave_S. on November 22, 2023, 06:17:37 pm
I had a Taranis with all the telemetry enabled for my last foray into electric flight, but sold it when I decided I prefered glow engines. Wish I'd kept it now as it would be very useful to have voltage & power consumption, etc. figures on the Tx display.
Might splash out on another after Christmas just because it would be interesting.
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: 1967Brutus on November 22, 2023, 07:07:03 pm
I had a Taranis with all the telemetry enabled for my last foray into electric flight, but sold it when I decided I prefered glow engines. Wish I'd kept it now as it would be very useful to have voltage & power consumption, etc. figures on the Tx display.
Might splash out on another after Christmas just because it would be interesting.


You won't believe how useful it CAN be to have telemetry when running IC engines.I modify glow engines to run on gasoline, and several of my designs actually use telemetry-controlled engine functions (like temperature and barometric pressure compensated fuel mixture). Strictly necessary it is not, but the measured values alone will help get so much better results, I could not have gotten as far as I did, without telemetry.

It is much more than just voltages and/or consumption figures... It allows for all kinds of stuff like actual and accurate runhour counters, engine stall warnings (my engines are quiet enough that i cannot tell they are still running even with only electric planes in the air), it warns for dropped (non-firing) cylinders in the two multi-cylinder engines I have, it operates starting assistance (based on the zero-RPM readout it opens the throttle a bit when starting, like this: https://www.youtube.com/watch?v=iUw73mRIT3Q ) and all kinds of other cool stuff, like being able to drop of towed gliders at predetermined altitudes.

I can only wholeheartedly recommend it. You don't need it, but if you can think of it, a Taranis (or comparable TX) can do it...
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on November 23, 2023, 12:59:17 am
Imagine that I don't have such a higher class of RC radio as you have.
All that you have said can be understandable and reasonable on condition that I have a similar radio system.
See the pic of a radio for my Constellation below that is very old system like the Chris craft Constellation ! {-)
I have mentioned before, I still have lots of RC radios and crystals used in RC airplanes, Rc tanks, Rc cars and boats
in my younger age. There is no need for me to buy additionally much latest radio systems.
Making use of the older radios is my style of Rc hobby and economical in my hobby life. O0 :-))
Moreover,I don't feel to buy much higher RC radios for my RC modelling at all at my age. O0
A very simple digital V meter will do my want for this level of RC boat to sail even on the large lake.
And no problems have occurred as of today followed by prudent pre-checks. :-))
I have felt no inconvenience so far as to Rc radio system that I have.
I bought additionally very old Futaba FF7 super for airplane some years ago. {-) {-)
1;the radio for my Constellation
2;This car made a long trail run for 12km(7.5miles)
3;The car in a tunnel  in the trail course.
4;1/16 RC tank has 2 V meters to run close to 4km(2.5miles)
5;Lindberg Pt-109


Enjoy your RC hobby with your own style and I'll do the same on my own budget, experience, skills, thoughts and taste
and and age!!. :-))



Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: 1967Brutus on November 23, 2023, 04:04:23 am
Apologies for polluting your trhead. Of course anyone should enjoythe hobby his own way.

They were just meant as suggestions, not as anything else...
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on November 23, 2023, 05:30:25 am
Never mind at all.!!!! {-) :-))
There are usually some or many different ways to reach the summit.
I like the sayings; " So many men, so many minds" or " There are as many opinions as there are people"
It may be perhaps ideal and happy if each could enjoy the RC hobby in each style.  {-) %% O0  This may be the hobby..? {-)
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on November 23, 2023, 06:02:34 am
At last, she came to the lake from the cradle spent for 3 months to grow. :-)) :-)) :-))
she looks much elegant on the water than on the table to me.... :-)) :-)) :-))
Draft looks OK beyond expectation though I installed two Mabuchi 540 motors that were much heavier than kit-furnished 280 ?class motors. I could not check the draft precisely and clearly in the bathtub test due to observing angle from my eyes. {-) {-)
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: 1967Brutus on November 23, 2023, 10:40:12 am
Looks perfect on the water! Especially the pics taken from a slightly larger distance, it becomes hard to tell if it's a miniature replica or the real thing.
It looks like she's ever so slighly down by the head, but it is very minimal. Could even be my imagination. Shifting the battery backwards a few cm should allready do it.

Curious to see how she will perform at some speed
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on November 24, 2023, 04:29:08 am
A great thanks for your kind comments to the point, and interest in the sailing of the boat. :-)) :-)) :-))
Here are the pics of very first test run which I think is so so but not satisfied with that.
I made three runs totaling to 12 minutes at about 70% throttle at the fastest for fear of unexpected trouble on the water.
Moreover I didn't get her to run much farther on the water also for fear of some trouble.  {-) {-) O0
The dinghy did not have any problems at all.!
Cooling water was also confirmed as in the pics.!
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: swiftdoc on November 24, 2023, 06:12:35 am
I have been following your build report with great interest, Kiyo. The outcome has turned out as I had expected, another very fine model :-))  She looks quite majestic on the water, well done! O0
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on November 24, 2023, 08:54:55 am

Hi Doc,I'm soo glad to have a complimentary comment from a modeller like you who are veteran, skillful and gentle.!!! :-)) :-)) :-))
In addition to the above, I'm also very much delighted with your attention to my postings of build of the cabin cruiser. :-))


                                                                                                                                                      kiyo
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on November 25, 2023, 02:05:46 am
The first trial run was what I call "so so" as usual and I hereby attach the video to show you how she performed on the day.
The wind was 1m/s north nearly all day long which was good enough to carry out the first trial run except dirty surface of the lake.... {:-{ O0  A bit warm in these days in Tokyo. The second test run is supposed to perform in the near future after re-adjustment for a better performance on the water. :-))


https://www.youtube.com/watch?v=T5Tva-AVaUU&t=32s
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: derekwarner on November 25, 2023, 04:11:43 am
mmmmmm Kiyo........ we hope that green water covering is not from the  xxxushima nuclear plant heavy water release ? :embarrassed: 


[The computer word spell  :police:  detected a naughty word in English so has substituted XXX]

Do you glow green in the evenings?........ {-)
Derek
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: 1967Brutus on November 25, 2023, 09:56:50 am
The first trial run was what I call "so so" as usual and I hereby attach the video to show you how she performed on the day.
The wind was 1m/s north nearly all day long which was good enough to carry out the first trial run except dirty surface of the lake.... {:-{ O0  A bit warm in these days in Tokyo. The second test run is supposed to perform in the near future after re-adjustment for a better performance on the water. :-))


https://www.youtube.com/watch?v=T5Tva-AVaUU&t=32s (https://www.youtube.com/watch?v=T5Tva-AVaUU&t=32s)


To be totally honest, the first few minutes of your video, I was really wondering what was that "so so" you  mentioned, as all I saw was a decent running boat. She is running a bit "wet" (not fully rising out of the water, which could be because she is slightly down by the bow when stopped) but nothing weird.

Then at the end of the video I noticed she did a few unexpected outward rolls when turning, and that surprised me because the first part of the video I did not see that tendency. Could it be that water is entering the boat affecting stability? Something moved internally?

But she looks great on the water, absolutely, I am sure you will get it right in the second run.

Congrats on a succesful maiden voyage.
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on November 25, 2023, 10:55:29 am
Hi Derek,
"xxxxx" nuclear plant is going well toward the abolition under the control of authorities concerned, as most gentle
countries have admitted it should be, especially, typically by EU countries including your country. :-)) %%
The waters off "xxxxx" is very clear scientifically, however, the worst is our waters in the lake as you have understood
 the dirty surface by the pics attached..... <:( <:( <:( 8) 8) 8)  That is so-called emerald green that has been making
us so nervous for nearly a decade..... {:-{ >:-o >>:-(
However, it gets OK from late December normally when is the best season though too cold.... {-) {-) {-)
"The green devil" can be seen at starboard and the waters.
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on November 25, 2023, 11:36:41 am
Hi 1967brutus,
That's right.!!! She has showed some kind of unstableness at higher speed sometimes in the run.
As for wet sailing you indicated, it may partly come from refrained throttle work for fear of the above characteristic.
And hull design of this boat is so-called a semi-displacement type so that it seems a bit hard to get into planing on the water..? O0

In the first half, I got her run at slower speed to check a range test, to adjust steering chracteristic, unexpected
trouble like coupling malfunction and the like while made her run a bit faster with 2/3 throttle or so in the latter half when the sailing showed a bit unstable sometimes...
In the second run of the day, the bad characteristic was improved to some extent.
I found the same tendency in another Constellations in You-tube during my build...
It may be perhaps  from a bit top heavy construction for a lightweight hull...no strakes no clinkers with just a concave V hull..
But she is not a PT boat nor speed racer so that I think excessively high speed is not to be expected like a real Constellation.
Scale realism of speed is also important in addition to her appearance, isn't it.?? {-) O0
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: 1967Brutus on November 25, 2023, 12:23:25 pm
You could be 100% correct with your assessment of the stability at high speed, and indeed, looking at the pics of the original, I'd say the speed at which your model was still stable, fairly closely matches scale speed, so it should not go any faster anyway.

Probably best to limit the speed to that.

Which leaves the conclusion: "You, sir, have built an absolute stunner!" :-)) :-)) :-))
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on November 25, 2023, 02:14:01 pm
Hi 1967Brutus,


A great thanks for your understanding my way of thought about status quo of the trial run and modification plan to get her
more stable on the water at a bit faster speed.
Frankly speaking, I want her to be a bit faster on a basis of definite stability.!!!  Safety first in RC modeling.! %% %% O0
I have two countermeasures to cope with the above problems under progress in secret here. {-) {-) {-)
Since I 'm not confident of them... {-) {-) {-)
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: 1967Brutus on November 25, 2023, 05:44:59 pm
I know what you mean, you want stability "regardless of speed" in order to eliminate the possibilities of "oopsies".
Sometimes that can be done, sometimes it is what it is, unfortunately.

If I had to guess, I'd say the CoG is a touch forward, which also leads to the "running wet". Very possible getting the bow out a touch higher will bring that stability, because IMHO it is caused by the lateral point of the boat being too far forward due to the bow not lifting properly.
Same like an arrow having its feathers at the tail end, a boat on the plane wants to have its resistance in the aft, not in the front. Lifting the bow a bit should increase that stability. At least, that is my estimation.

Of course you can lower CoG but usually that has other less desirable effects, like the boat becoming a bit like a bobble head when in displacement mode.

That usually is a bit of a compromise that I had to make as well when ballasting my Krick Alexandra.
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on November 26, 2023, 03:49:51 am
The pics for today is my analysis of effects of enhanced hard chines I applied to my Constellation in the trial run as I had done
with my1/32 Lindberg PT-109.    The result was so so.... {-) {-) {-) :-)) :-)) :-))


1; Original hull of 1/32 PT-109 with the plain hard chines
2; The waves seem standing roughly along the sides of hull
3; I applied the enhanced hard chines in my style to the second 1/32 PT-109 built last November
4/5; It appears to me that the enhanced chines did work very well judging from the side waves arising from the chines,
     especially forming a neat long bow arch in each side. O0 {-)
6; adopted the enhanced hard chines again in my Constellation
7/8; The effect is ....So so....? %% at this stage....     I don't know in the very near future??? O0 :embarrassed:
9;;What I call "enhanced hard chines" in the real boat
10; The enhanced hard chines applied to my Constellation. :-))


Well then, the second trial run is coming soon that I do expect a better performance.!!!! :embarrassed: O0 ok2
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: 1967Brutus on November 26, 2023, 02:37:24 pm
As you can see in the pics, after the modification (hard chines) your PT-109 is riding much higher than your Constellation. Before the modification, the PT-109 was riding much lower, with more of the keel touching the water.

I still think, this is the basic issue: Too much displacement and not enough plane.

I do not know if that can be solved without compromising the "stance" (how the boat sits in the water when not moving). But I do think moving some weight aft will improve the boat's handling at higher speeds.
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on November 27, 2023, 02:20:18 am
Your comment appears to put much importance on a slight backward balance to improve the better performance to which I agree fundamentally. O0  In addition to that, I feel there are some other causes to have her a bit unstable....
I will check the one cause of them if improved or not this time on the lake. :}
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: 1967Brutus on November 27, 2023, 03:20:48 am
Your comment appears to put much importance on a slight backward balance to improve the better performance to which I agree fundamentally. O0   


As soon as a boat gets on the plane, CoG is the main parameter for behaviour, and the importance of that parameter increases with speed.
If CoG adjustments are not possible, trimtabs are an option, but they are ugly.

The exact shape of the chines (more specific, the angle at which they deflect the water away from the hull, horizontal or downward) affects the lift the boat experiences, this can also be used to adjust how the boat rises out of the water.
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on November 27, 2023, 01:27:01 pm
The pics for today are the very diorama with 1/20 Constellation in "the life size natute" simulating the Caribbean sea...!!!! {-) %%
It was very fine day today with a nice surface of the lake.   1m/s north wind which is ideal and perfect for scale model
boating. O0
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: 1967Brutus on November 27, 2023, 06:31:03 pm
Beautiful!
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on November 28, 2023, 06:56:53 am
Thanks a lot for such a comment as the above that are short and complimentary ones.!!!!! {-) {-) {-) 
I do always welcome such comments,1967 Brutus.!!   :-)) {-) %% O0 ;D


Well then, pics for today are the shots of dynamic scenes in the second trial run in which stability was improved at higher speed
to some extent, though not completely satisfactory yet..
I myself have to remember that this model ship is a "RC workable scale pla-model" originally and was not born a true RC boat.
I should not expect excessively her to play like a true RC boat on the water at excessively high speed.!
In this sense, scale realism of sailing is to be much respected on the water. O0 O0
Or it's so pitiful if I should intend and try to get her run so fast excessively like a runabout on the water...The real boat is just a wooden cabin cruiser with a fly bridge born before 1960, not the modern high speed cabin cruiser made of GFRP. O0 {-) {-)


But third trial run is to be held early in the December after additional countermeasures are applied. :-)) {-) {-) {-)


However, some pics below look comparatively fast and dynamic like a modern cruiser for her traditional classical appearance..... {-) {-) {-) Anyhow she ran better in the second test than in the first test. :-))
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on November 29, 2023, 04:30:09 am

This model boat I think is characterized by its top-heavy construction with high sides and a flybridge and lightweight if I
should regard as a RC fast runner.  Frankly speaking, it's a bit difficult to gain a reasonable level of stability though I am seriously
trying to improve it with some countermeasures based upon my past experience. {-) %%



Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on December 01, 2023, 02:39:00 am
I'm now renewing my mates of passengers aboard my Constellation in parallel with improving sailing performance. :-))
The pics below are just my images of their locations and casts for them to play onboard. :-)) :-))
Well then, I have to think about their dressing up having much advice of my old wife on what colors they would be suitable.. {-) {-) %%

It's so enjoyable to do such thing of diorama compositions as the above apart from the mainstream of building the boat hull, isn't it. O0
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on December 02, 2023, 11:12:58 am
Some impressive and dynamic pics in the third trial run taken today which has been improved gradually by my tenacious study ..?? {-) %%
But dynamic scenes below seem to spoil the traditional and classic mood of Chris Craft Constellation 1956....
Yes,!! this boat needs no such a high speed ...??? {-) %% :D   Stability comes first, not fast!!! {-) O0 
She is not a runabout.!!! {-) {-) 
In this sense, my Lindberg 1/32 PT-109 is well-balanced between stability and speed. :-)) 
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: 1967Brutus on December 03, 2023, 12:35:16 pm
Beautiful!
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on December 03, 2023, 01:56:59 pm
I'm so happy if I could successfully let you show a nice video in the very near future in which my Constellation ran stably to such a level that I was satisfied with.... {-) {:-{ :(( O0
I have still two ideas left to improve the stability to my satisfaction, or at least, compromise..... {:-{ :D


Seeking the stable and scale-like sailing ...??? {-) {-) {-)

Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on December 04, 2023, 12:22:39 pm
Pics for today are from the 4th trial run though the still images aren't understood by you about what they are different from the previoius ones... O0 {-) %% {:-{ :((


To conclude, she ran like a runabout that was not a image of old Chris Craft cabin cruiser.... {-) {-)
The video of the trial run will be posted another day, which may show you a nicer improvement of sailing stability...!!


Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: 1967Brutus on December 04, 2023, 08:59:39 pm
As they say:"Video, or it did not happen..."

But the pics look absolutely good!
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on December 05, 2023, 01:50:14 am
 "Dohomo-arigatou" for your friendly comment "which" means "A great thanks" in Japanese,1967Brutus.! %%


A video I think is better medium to let others understand the status of motion of RC models, as you have
 often used in this forum. :-)) :-))
I have been enjoying the motion itself of RC scale models so far in the field after their completions. :-)) :-))


By the way, are you enjoying your gas-powered boat that is already completed after fully painted...???
I have missed the boat running on the water way recently... <:( {:-{ O0 {-)
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: 1967Brutus on December 05, 2023, 11:27:35 am
"Dohomo-arigatou" for your friendly comment "which" means "A great thanks" in Japanese,1967Brutus.! %%


There is no need to thank me for telling the truth about a beautiful boat... :D :D :D

By the way, are you enjoying your gas-powered boat that is already completed after fully painted...???I have missed the boat running on the water way recently... <:( {:-{ O0 {-)


I wish I was... but the situation is, that I am right now running an even bigger boat on the water, as my profession is that of chief engineer on chemical tankers. Unfortunately my employer also operates Bunker Tankers and right now I am placed on one of those, so basically we're running around with a lot of that sticky black stuff in our tanks.
And since it is now winter time on the North Sea, I am not really enjoying that... Although today we're a bit lucky and the weather is acceptable, but keeping that gooey stuff at a pumpable temperature is quite a challenge when the weather gets bad.

So for the next 2 or 3 months, no playing with tiny boats for me...
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on December 06, 2023, 07:12:32 am
I have understood the latest conditions about your RC boating hobby and your profession which was the same as my late
father who once served aboard a small inland cargo-liner as a chief engineer.


The video of the 4th day trial run was edited properly as attached below. O0
The 5th day trial run will be final at present configuration and 6th day trial will be resumed after changing some parts. :-)) {-)




https://www.youtube.com/watch?v=m2K5CjkaTL0


 
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on December 14, 2023, 11:08:07 am
Pics for today are the introduction of new members as new passengers aboard my cabin cruiser Constellation.!!
The new members consist fundamentally of two families and their aunts totaling to 7. {-) :-))
This configuration is standard throughout a year except the summer season when some bikini girls may possibly enchant us by their nice bodies. O0 {-) %% :-))

Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: 1967Brutus on December 14, 2023, 11:31:47 am
except the summer season when some bikini girls may possibly enchant us by their nice bodies. O0 {-) %% :-))


:D :D :D :D :D
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on December 15, 2023, 04:13:53 am

Props available for my Constellation...
Left to right
1; Black one is a kit furnished 29mm two bladed that was ignored in my boat from the beginning! {-)
2;The first one of 34mm dia used in my boat that I felt were a bit torqueful
3;28mm dia prop now in service as seen in the video below.. Soon the props will be replaced with the rightest one of 32mm dia
4;32mm dia prop to be installed with as the final setting for this boat and possibly the best among the 4 props O0

https://www.youtube.com/watch?v=ruDKXcsmrEk (https://www.youtube.com/watch?v=ruDKXcsmrEk)
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on December 17, 2023, 07:38:49 am
A detailing work has been fulfilled gradually ... :-))
The pics for today are of a deck table as seen below that is placed beside two old aunts talking cheerfully today too... {-) {-) %%
Next is ...is...something like some beverage to be put on the table. :embarrassed:
Making a kind of diorama on the deck is also enjoyable and indispensable to serve as a scale model boat building, isn't it? :-)) %%
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: derekwarner on December 17, 2023, 08:15:05 am
Hi Kiyo...........

A little concerned about the stability  :o  of that X-leg Mini-Table......the Constellation would only have to cross a low wake of another similar-sized vessel.....and the table & drinks would go helter-skelter across the top deck [whilst listening to the original Helter Skelter by Sir Paul]  {-)


Derek
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on December 17, 2023, 02:24:17 pm
Thank you for your good and interesting advice on my mini table, Derek!
I do think so... {-) {-) {-) The table must be very unstable on our local lake ,especially at higher speed which I like. {-) {-)
I just put the table for creating some kind of atmosphere like to watch her who anchored on the lake....knowing the
contradiction to what you referred... {-) %%
As for "helter-skelter", I did not know the word at all until you referred here...I just learned it very much in many aspects
from my English Japanese dictionary and related information in the internet.
Thank you for the interesting and informative humorous comment.!!
Your common sense is not always common to me, a Japanese and in this sense this forum is a useful for me to know
how the Westerners think about in each topic, matter and subject posted here. :-))
This is a kind of so-called international friendship through the model boat hobby, isn't it ?? {-) %% :-))

Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: 1967Brutus on December 17, 2023, 03:55:29 pm
You should fit an MP3 player somewhere in the boat, that starts playing that Beatles song Helter Skelter every time you give full  throttle... :D :D :D 

Paul McCartney - Helter Skelter (Live 8 2005) (youtube.com) (https://www.youtube.com/watch?v=SB3EcEfv6Lc)
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on December 18, 2023, 02:41:14 am
Oh, it's a really good idea but I do prefer much moderate Beatles songs for my stable operation of the boat
at full throttle.  %% %% %%    To make the matter worse and to my regret I don't understand true meaning of contents of
the song "Helter-Skelter" as a Japanese apart from superficially literal interpretation. O0 :embarrassed: {-)
I wonder many of the Europeans are normally fond of that kind of song...???????? :D {-) %% :o %) ;)

Or only specialised enthusiasts....???? {-)
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: derekwarner on December 18, 2023, 10:43:47 am
Kiyo......I agree, the meaning of Helter Skelter could go back many Centuries. and is so complicated .... >>:-(


So maybe let us forget that name & you nominate a musical piece that you feel comfortable with....with Constellation zooooomimg across the water  O0


Derek....
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: 1967Brutus on December 18, 2023, 12:18:06 pm

I wonder many of the Europeans are normally fond of that kind of song...???????? :D {-) %% :o %) ;)




If you ask about present times, I don't know.... But end 1960's, early 1970's, LOTS of them...

I have always liked the song and I am too young to remember the Beatles mania.
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on December 19, 2023, 11:15:48 am
....with Constellation zooooomimg across the water  O0


Derek....



I'll do my best to sail cheerfully and vividly even though it's winter and cold,but calm on the water in this season around Tokyo.
 O0 O0 {-) :-)) :-))
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on December 21, 2023, 10:36:04 am
Hi Derek,


I happened to find a very unusual U-tube video in which there were some unstable chairs on the upper deck of the Constellation at
1 minute past scenes of the U-tube... {-) %% :D :embarrassed: :o {:-{
Can I have your comment of the scene..?? O0 O0 {-)  Helter-skelter on the deck...?
I'm an very amateur even to this world of real boats.... <:( <:( <:( {:-{ %% :embarrassed:


Bing 動画 (https://www.bing.com/videos/riverview/relatedvideo?&q=Chris+Craft+Constellation+Lindberg&&mid=AE6357DA8E0A314D33CCAE6357DA8E0A314D33CC&&FORM=VRDGAR)
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: derekwarner on December 22, 2023, 01:26:45 am
Thanks Kiyo for the link to so many beautiful Chris Craft new and older vessels....

Some of the 'antique' and 'restoration' videos are amazing history of old..the Althea from 1929 was superb O0 ......[horizontal steering wheel  :o ]

I had no idea about Chris Craft history being so extensive

Certainly the folding deck chairs and tables, were probably stored away when not in use or in inclement weather, so with you model, maybe a minute drop of Superglue between each leg to the deck would solve any chance of Helter-Skelter   {-)  on the top deck 

We hope you will enjoy the coming Christmas gatherings


Derek
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on December 22, 2023, 02:09:21 pm
Derek,
Thank you for your cordial comments and I also wish you and your family to hold a merry Christmas gathering.!! :-))


Kiyo
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on December 24, 2023, 11:19:26 am
Hellow everybody
   from Japanese Sant Clauses aboard Chris Craft Constellation in the large lake in cerebration of Christmas Eve.
We have enjoyed Christmas Eve cruise with many participants. {-) {-)
How do you normally enjoy Christmas and Eve with your model boats.?? {-) :D
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: derekwarner on December 24, 2023, 12:03:09 pm
So Kiyo asks ....'How do you normally enjoy Christmas and Eve with your model boats.'?

Many many years ago, my wife & 3 daughters & I spent a Christmas to New Year with a work colleague & his family on Lake Macquarie in NSW


His vessel was a 49 foot plank on frame crusier built by the Springbock Boat builders in Brisbane in 1949 [the year of my birth]

Beautifull restored, with twin British Ford 6 cylinder marine diesel engines.......the engine lower bilges were white fiberglassed and you could eat food off the surfaces

Very similar to the image I attach, which is similar to an earlier production of your Constellation

Best wishes for your Japanese Christmas O0

Derek
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on December 24, 2023, 01:54:35 pm
Derek,


Thank you for your kind Christmas comment which I feel is very very gorgeous experience and memory. :o :D O0
And that you experienced it many many years ago........incredible to normal Japanese like me who was soooo poor
in those days.... No,still now....!! <:( <:( {:-{

It's just a coincidence that you were born in 1949 when I was born. My late father spent in Brisbane as a prisoner of war
over half a year in1946 when I heard Australian soldiers had taught the Japanese volunteers English conversation and my late father was one of them...

A merry Christmas to you and your family !! :-))


Kiyo
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on December 25, 2023, 02:27:56 am
It's a Christmas day and I'll post the Christmas Eve cruise scenes in motion some or all of which may look helter-skelter like
atmosphere aboard the boat partly because of wavy lake and sixth (final) trial run replaced with a new 32mm dia props.
The final trial run with two Sant Clauses aboard this time generally ended with success though it was compromise-able level.
In the concrete, high (not Max ) speed, stability and  maneuverability could successfully enter the compromise-able level
of balance. In this sense this boat has been qualified as a serviceable RC scale boat for this large lake.!!!! {-) :-)) :-)) %%
A new SERVICEABLE RC SCALE boat is born now for this large lake on this very Christmas day.!!!! :-)) :-)) :-)) %% %% %%
It's a merry and happy Christmas day filled with Great joy. The new boat is born on the very Christmas day.!! {-)
I have picked impressive still scenes in motion below on the day.


This is the temporary result of my summer-autumn project successfully concluded for this year. :-)) :-)) :-)) :-)) :-))
Title: Re: Lindberg 1/20 Chris craft Constellation build
Post by: Backerther on December 25, 2023, 07:39:32 am

On the Christmas day...
I post here this video as a good memory of temporary completion of Constellation.!
I wish you all the best Christmas with your families.! :-))


Chris Craft Constellation 1/20 in Christmas Eve cruise ! (youtube.com) (https://www.youtube.com/watch?v=Y3g6OvA8pTI)