Model Boat Mayhem

The Shipyard ( Dry Dock ): Builds & Questions => Springer Tugs => Topic started by: boatmadman on December 15, 2007, 03:16:05 pm

Title: Boatmadman's superspringer
Post by: boatmadman on December 15, 2007, 03:16:05 pm
HEH, HEH, HEH   O0
Title: Re: Boatmadman's superspringer
Post by: Martin [Admin] on December 15, 2007, 03:22:29 pm
Blimey, a racing Springer!  :o
Martin  
Title: Re: Boatmadman's superspringer
Post by: Arrow5 on December 15, 2007, 04:20:47 pm
Nah, too fat for a racer.  Behold the "Springalong" , from re-cycled CD rack that was just a convenient 9" longer than a regulation Springer. Just used front and rear profiles and added flat mid-section.  Shown with "Maid" top to show difference. Planning two standard 540, (not sure about Korts) and a streamlined look. Started yesterday, finished by spring or earlier if Santa is nice to me. ;)  Nice work Boatmad, what is the overall size of yours? Any ideas yet about the top ?
Title: Re: Boatmadman's superspringer
Post by: boatmadman on December 15, 2007, 04:37:37 pm
Hi,
Mine is standard size, except running gear.

Not started the top yet, will wait and see what 'springs' to mind.

Ian
Title: Re: Boatmadman's superspringer
Post by: Arrow5 on December 15, 2007, 07:55:22 pm
"...springs to mind"  {-)    I thought your SS was bigger somehow. Whose Korts, in case Santa is reading this ?
Title: Re: Boatmadman's superspringer
Post by: Stavros on December 17, 2007, 07:13:56 pm
Topic split as I felt Wee Johnny should have his own thread

Stavros
Title: Re: Boatmadman's superspringer
Post by: Arrow5 on December 17, 2007, 08:12:19 pm
Thanks for link to Korts by the way. O0
Title: Re: Boatmadman's superspringer
Post by: boatmadman on December 27, 2007, 04:56:23 pm
Righto, some progress now:

here you will see the superstructure pretty much built, ready for filling and sanding, propshafts dry fitted with the secret new type of prop I am developing  O0

You will also see the radical location for the drive motors, transmission is top secret yet!

Ian
Title: Re: Boatmadman's superspringer
Post by: Mr Andy on December 27, 2007, 05:08:23 pm
Ian what size knozzles are you using?

Andy. ;)
Title: Re: Boatmadman's superspringer
Post by: Arrow5 on December 27, 2007, 05:25:05 pm
It is looking suitably brutal, I do like the big funnels, hints of a massive diesel below.  Are the korts mounted in a block of resin ?
Title: Re: Boatmadman's superspringer
Post by: boatmadman on December 27, 2007, 05:49:58 pm
Andy, the korts are 50mm jobbies.

Arrow, the mounts are indeed in a resin block, araldite mixed with microballons - seems to work ok.

Ian
Title: Re: Boatmadman's superspringer
Post by: Mr Andy on December 27, 2007, 10:40:53 pm
Blwdi heck won't they bury the back end in the water? ???

Andy. :)
Title: Re: Boatmadman's superspringer
Post by: Arrow5 on December 28, 2007, 04:59:39 pm
Nope , micro-balloons are all air so resin wont be heavy. besides with the well known diving-when-under-power characteristics of the Springer are considered , it could be a good thing to be slightly tail heavy.
Title: Re: Boatmadman's superspringer
Post by: Mr Andy on December 28, 2007, 07:02:49 pm
I'm off to the shop tomorrow I'll take my new hull with me and weigh up my choises.

Andy. :)
Title: Re: Boatmadman's superspringer
Post by: Arrow5 on December 29, 2007, 02:06:49 pm
Hey Boatmad:  Big funnels need smoke, try some www.robotbirds.com smoke pellets(see www.putfile.com/Arrow5). Need metal tubes though, they burn very hot, will melt plastic !
Title: Re: Boatmadman's superspringer
Post by: boatmadman on December 29, 2007, 04:36:45 pm
very impressive, but if my engines smoked like that I would get the sack!  ;D
Title: Re: Boatmadman's superspringer
Post by: Arrow5 on December 29, 2007, 07:10:12 pm
Yeah i forgot it wont be a steam engine, hee hee {-)
Title: Re: Boatmadman's superspringer
Post by: Mr Andy on December 29, 2007, 07:40:10 pm
Just waiting on the korts now I feel 50 mm is to big for mine so I'll go down a bit, purchased two 500 motors and other parts earlier 121 Squids and I've not finished yet. ???
Title: Re: Boatmadman's superspringer
Post by: boatmadman on December 29, 2007, 08:04:21 pm
Mr Andy, NEVER keep a total of the cost of your models - it'll scare the pants off you!

even more important - never, never, never tell swmbo the real cost!
Title: Re: Boatmadman's superspringer
Post by: boatmadman on January 11, 2008, 05:36:03 pm
And here we have a little progress at last on the drive train. Photo's show range of steering, the shaft end bearing, the steering linkages and lining up prior to glueing.

Ian
Title: Re: Boatmadman's superspringer
Post by: Mr Andy on January 11, 2008, 05:54:37 pm
Looking good Ian, I'm still unable to continue, not for much longer I hope. O0
As for keeping tabs on cost I agree wholly, don't.

Andy.  :)
Title: Re: Boatmadman's superspringer
Post by: Tugboat Andy on January 11, 2008, 06:36:37 pm
Great looking boat, but then again I am partial to kort nozzles.

What size propellers are you using.  They appear to be 45mm?

Keep up the good work!
Title: Re: Boatmadman's superspringer
Post by: boatmadman on January 11, 2008, 06:55:09 pm
yup, Andy, 45mm props in 50mm korts!  O0
Title: Re: Boatmadman's superspringer
Post by: Tugboat Andy on January 12, 2008, 05:11:39 am
I am trying a Raboesch 50mm prop in a robbe kort nozzle.  It seems that the 50mm prop may require fine tuning to ensure it does not bind.  I am afraid I may have to run the grinder around the blades to get the correct fit after the final installation. But, while the rudder tube is still loose, there is no binding and it turns fine.

I like your use of micro-ballons to build up around the rudder tube. I'm thinking about doing the same with some sort of removable form.  ;)

Do you have any idea what kind of motor you will use for power?  I tried the Titan 550 1:1 turning a Graupner 50mm 4-blade in a nozzle on my last boat. It moves pretty good but the motor will get quite warm. There is no easy way to cool the motor because of the kort nozzle.  :'(

Keep up the good work!
 
Title: Re: Boatmadman's superspringer
Post by: djrobbo on January 12, 2008, 12:28:38 pm
Hi andy....have you thought of trying to cool the motors by using a seperate water pump.....water pick up can be from anywhere under water and can continue to run even when stopped........just a thought

       regards....bob.
Title: Re: Boatmadman's superspringer
Post by: Tugboat Andy on January 12, 2008, 06:46:42 pm
Well, I thought about it but I seem to have read somewhere that most pumps weren't designed to run continuous and they have a tendancy to burn out? Perhaps it would depend on the pump motor.  Toesup and a few others used a rather nice diaphram pump but the source dried up, unfortunately.
Title: Re: Boatmadman's superspringer
Post by: boatmadman on January 17, 2008, 12:31:40 pm
Hi,

Been getting the superstructure done, and tried a bit of weathering for the first time. What do you experts think? Too much? Too little? or just c!!!.
 ;D

Ian
Title: Re: Boatmadman's superspringer
Post by: Mr Andy on January 17, 2008, 06:44:26 pm
Just looking at your very smart superstructure, how tall is it? The wood I have ready seems too small.

Andy. ;)
Title: Re: Boatmadman's superspringer
Post by: Stavros on January 17, 2008, 07:27:33 pm
Looks rather good to me O0


Stavros
Title: Re: Boatmadman's superspringer
Post by: boatmadman on January 17, 2008, 07:50:10 pm
Andy,

Dimensions are 200mm for-aft, 120mm p-s, and 130mm to top of funnel.

I dimensioned this at very approximately 1:50 scale.

Ian
Title: Re: Boatmadman's superspringer
Post by: Red_Hamish on January 17, 2008, 09:17:12 pm
Hello all, don't  you just love it when someone comes along and shows you up BIG time. With our attempts at realism looking purely amature even with hundreds of hours spent on them. While Boatmadmans looks fantastic!  Ian, keep taking the tablets they must be the things sgiving you inspiration and patience for the attention to details  ;D O0

cheers

Jim (green with a touch of envy)
Title: Re: Boatmadman's superspringer
Post by: Mr Andy on January 18, 2008, 11:48:18 pm
Thanks Ian I'll increse the size a touck, we used the dimensions of a Dickie tug and it didn't seem right.

Andy. ;)
Title: Re: Boatmadman's superspringer
Post by: boatmadman on January 29, 2008, 08:54:38 pm
Some more progress at last.

Hull and superstructure painting and weathering done - just needs some varnish tomorrow to stop the rust washing off ;D

No hardware fitted yet, hopefully by the end of the week so I can load test the motors in the test tank then order an ESC to suit.

Ian
Title: Re: Boatmadman's superspringer
Post by: chingdevil on January 29, 2008, 09:04:25 pm
Ian

That is looking really good, I like the weathering looks very realistic.

Brian
Title: Re: Boatmadman's superspringer
Post by: boatmadman on January 31, 2008, 03:21:44 pm
tank test done, each motor pulls less than 7 amps, so now its time for action with a speedcontroller.  O0
Title: Re: Boatmadman's superspringer
Post by: boatmadman on February 09, 2008, 12:41:23 pm
Hi,
Well, quite a lot of fettling going on since last post. I ordered an esc from Action, arrived with the usual very speedy service (<24hrs). Wired it up and it wouldnt drive the two motors.

After testing and eliminating all other possibilities, I had to contact Dave who put me right straight away.

It was MY fault! Doh! In my ignorance I had bought 2 x 777 motors, which on having listened to advice aren't what I thought I was buying.

So, Dave very kindly made up an esc specially for me, tested it on two of his stock 540 motors, and sent it off as a direct swap for the origional esc. This was done delivered and arrived in 3 days - good service or what?

Bench tested myself - all ok.

Installed and tested - all ok.

test tank test - fuses blew!!!

I have wired a 10amp fuse between the esc and each motor, so that if one pops out on the water, the other should be able to drive me home, at the same time, the 20a rated esc cannot ever see more than 20a this way, so is protected.

measured the current on load at 9.5 amps on each motor, decided to drop the voltage from 8.4 to 7.2. Current now 7.5 amps on each motor - happy with that.

Only trouble is, those two 50mm korts damn near made the thing jump out of the bath!

Looks like fun ahead  O0 ;D

Ian
Title: Re: Boatmadman's superspringer
Post by: Stavros on February 09, 2008, 06:38:36 pm
Oh yet again another CONNED by THAT motor seller

Stavros
Title: Re: Boatmadman's superspringer
Post by: boatmadman on February 09, 2008, 06:54:24 pm
Yup, lesson learnt. Thing is though I have other motors by that seller in other boats, but they are on electronize esc's and seem to be fine.

Ian
Title: Re: Boatmadman's superspringer
Post by: Ghost in the shell on February 09, 2008, 06:59:03 pm
well I nearly brought the motor to Nord Icelandia off him, glad I didnt!
Title: Re: Boatmadman's superspringer
Post by: gingyer on February 09, 2008, 07:09:32 pm
I think the main problem is he has only test benched his motors and not used them
in a real situation. I bought buhler motors off him as he told me they were what I
needed for a 7Ft destroyer even at 24v the were not fast enough one of the
club members worked out it was going at a scale speed of 12Knots the real one
would of done 30+knots. I had also bought some 777's and 555's put the 777's
in at 6V (he had told us they did not perform properly at 6v) went like a rocket
and no issues of what he had warned of.
The point I think is that his motors are very good but his advice on their application
is of no use. It is best to buy what others recommend not on his recommendations or
trial and error
Title: Re: Boatmadman's superspringer
Post by: funtimefrankie on February 09, 2008, 08:21:19 pm
I've two of his 777s running through Graupner Scottels on my Nangee (type). They are fused at 10amps, (never blown) with Mtronics 15amp ESCs....
No problems
Title: Re: Boatmadman's superspringer
Post by: boatmadman on February 09, 2008, 10:02:05 pm
I think the difficulty I had was because I was trying to run 2 777's through one esc. I suspect that if they had an esc each they may have worked ok.

I was being tight trying to use 1 esc for 2 motors!  ;D

Ian
Title: Re: Boatmadman's superspringer
Post by: boatmadman on February 10, 2008, 12:14:01 pm
Had sea trials today, all went well, good fun, good performance - see pics
Title: Re: Boatmadman's superspringer
Post by: boatmadman on February 10, 2008, 12:15:41 pm
And then Alan P turned up with his mega super sspringer - 12v drive, 50mm prop - popped a 10a fuse first attempt, upped to 15a and went well.
Title: Re: Boatmadman's superspringer
Post by: FullLeatherJacket on February 10, 2008, 02:43:11 pm
................bl00dy hooligans.................  >:(
FLJ
Title: Re: Boatmadman's superspringer
Post by: norry on February 10, 2008, 05:29:12 pm
     ...Hi Guys...

Is this another category of Springers...."THE BOY RACER CATEGORY"[/b]

...All The Best...Norry...
Title: Re: Boatmadman's superspringer
Post by: AlanP on February 10, 2008, 06:00:26 pm
Boy racer I am not, but I must admit that I felt like a kid again doing battle with Ian's springer  :)

The motor is out of a 24v battery drill, wonder how fast it would go if I could get the 24volts into it

Did well to get that shot Ian considering how fast it was going    {-)

Alan  (of the boy racer group) 
Title: Re: Boatmadman's superspringer
Post by: boatmadman on February 10, 2008, 06:19:12 pm
We developed a new branch of springer sport - springer sumo, two springers bow to bow and full speed ahead!  O0
Title: Re: Boatmadman's superspringer
Post by: FullLeatherJacket on February 10, 2008, 07:52:48 pm
We developed a new branch of springer sport - springer sumo, two springers bow to bow and full speed ahead!  O0
I rest my case. ;)
Title: Re: Boatmadman's superspringer
Post by: toesupwa on February 10, 2008, 08:33:52 pm
We developed a new branch of springer sport - springer sumo, two springers bow to bow and full speed ahead!  O0

You mean something like this?...  :P

http://media.putfile.com/Scoot-the-Springer
Title: Re: Boatmadman's superspringer
Post by: AlanP on February 10, 2008, 09:00:08 pm
Yep  Just like that toesupwa,  but with more gusto  {-)  didn't try the rope trick though, so if you read this Ian, bring a good thick rope with you next time  O0
Title: Re: Boatmadman's superspringer
Post by: chingdevil on February 11, 2008, 02:46:18 pm
Boatmadman
You can not call that a springer not even a superspringer. We all know that springers try to dive at anything over dead slow, and that one is trying to leap out of the water, obviously related to the salmon. {-) {-) {-) {-) {-) {-)

Brian
Title: Re: Boatmadman's superspringer
Post by: Tugboat Andy on February 16, 2008, 05:32:24 pm
Had sea trials today, all went well, good fun, good performance -

I like the way she looks!  Ready for business.  How is the turning radius ahead and astern? I found my single screw kort noxxle boat will turn tighter astern than ahead....but I aim to cure that on the next boat. O0
Title: Re: Boatmadman's superspringer
Post by: boatmadman on February 16, 2008, 06:22:24 pm
When turning ahead, it turns in its own length, pivots around the forward corner of the boat.

Astern isnt quite so good, about 1.5 to 2 times hull length.

Ian
Title: Re: Boatmadman's superspringer
Post by: explorer750 on February 20, 2008, 08:25:24 pm
Is this another category of Springers...."THE BOY RACER CATEGORY"[/b]

How about this as a idea, the AHHHHHHH category

18" x 8" inch hull size and floor shape as per plan.
Single or Double Motor up to 900 size ( gearing etc. allowed )
Up to 24 volts
Rudder= Kort's or rudder type
Must have a superstructure of some sort.
Title: Re: Boatmadman's superspringer
Post by: boatmadman on February 20, 2008, 10:30:34 pm
Thats not a boat!

It's two honking great engines surrounded by just enough box to keep em dry!  O0
Title: Re: Boatmadman's superspringer
Post by: Mr Andy on February 20, 2008, 11:16:24 pm
Where would everything go? I'm fighting for space with two 500's and two long battery packs.

Andy. {-) {-)
Title: Re: Boatmadman's superspringer
Post by: toesupwa on February 21, 2008, 12:00:53 am
Where would everything go? I'm fighting for space with two 500's and two long battery packs.

Andy. {-) {-)

Must try harder...  :P