Model Boat Mayhem

The Shipyard ( Dry Dock ): Builds & Questions => Lifeboats => Topic started by: J.beazley on November 05, 2006, 07:31:21 pm

Title: baby Severn
Post by: J.beazley on November 05, 2006, 07:31:21 pm
here we go then finally got my baby severn on the water at long last.

for a little bit ive been modding a little severn and heres a few pics of it on the water at long last.

(http://img.photobucket.com/albums/v479/jayimageservices/general/severn2.jpg)
(http://img.photobucket.com/albums/v479/jayimageservices/general/severn3.jpg)
(http://img.photobucket.com/albums/v479/jayimageservices/general/severn1.jpg)
(http://img.photobucket.com/albums/v479/jayimageservices/general/severn8.jpg)
(http://img.photobucket.com/albums/v479/jayimageservices/general/severn7.jpg)
(http://img.photobucket.com/albums/v479/jayimageservices/general/severn5.jpg)
(http://img.photobucket.com/albums/v479/jayimageservices/general/severn4.jpg)

Jay
Title: Re: baby Severn
Post by: J.beazley on November 05, 2006, 08:53:18 pm
i guess i best show people whats been done to the insides of my little friend.

with the grateful help of Shipmate60 (bob) this is what we have done to my Severn
ive used 2 x 380 type race motors with a sea rover 15amp ESC and a hitec 2channel reciever, using 35mm props and a pair of groupner small rudders to assist steering.
the whole lot running on a 7.2volt 1800mah buggy pack for the time being, but that will change when i have the money to upgrade packs.

(http://img.photobucket.com/albums/v479/jayimageservices/general/IMAG0001.jpg)
(http://img.photobucket.com/albums/v479/jayimageservices/general/IMAG0003.jpg)
(http://img.photobucket.com/albums/v479/jayimageservices/general/IMAG0004.jpg)
(http://img.photobucket.com/albums/v479/jayimageservices/general/IMAG0005.jpg)
(http://img.photobucket.com/albums/v479/jayimageservices/general/IMAG0006.jpg)
(http://img.photobucket.com/albums/v479/jayimageservices/general/IMAG0007.jpg)

and i think thats about it for the time being, will post more details if people want more info.

Jay
Title: Re: baby Severn
Post by: maninthestreet on November 06, 2006, 02:30:23 pm
Is this a modified version of one of those RTR kits that are available on Ebay?
Title: Re: baby Severn
Post by: J.beazley on November 06, 2006, 03:02:13 pm
yes this was one of the RTR models founded by the RNLI selling all over the place for around £50

as you can see ive changed a few bits and pieces  ;D
looks good on the water aswell with the extra bit of power from the bigger motors.

Jay
Title: Re: baby Severn
Post by: neilthebus on November 06, 2006, 07:31:15 pm
Good to see these pics of your conversion of the Severn. I for one would like more details. I also have a modelof a U.S. coastguard patrol boat based on a Vosper Thorneycroft design that has a very similar set up to the Severn.

One of the motors packed up (rusted to hell) and I have stripped it down to its component bits in order to decide how best to modify it so any info on the Severn conversion would be appreciated.

Thanks for the PM by the way

Neil
Title: Re: baby Severn
Post by: Aston on November 07, 2006, 12:26:56 am
for what it's worth, Model Boats magazine are publishing a kit special this month in addition to the normal magazine.  There will be  a full article in there on converting the Severn - I know, I wrote it !!

Aston
Title: Re: baby Severn
Post by: J.beazley on November 08, 2006, 05:38:22 pm
will be interesting to read that aston, whens the mag due out?

lots of people have lots of different set-ups in there Severn's, it will be nice to see what others have done and compare differences.

still got plenty of things i want to do with my severn to make it less "toy" like but it all takes time.

Jay
Title: Re: baby Severn
Post by: johno 52-11 on November 09, 2006, 09:43:15 pm
Hi Jay

Your boat looks like its got a good turn of speed there. Having been involved in getting a 1/12 Severn to perform I have one small observation. With the power your putting out you might consider adding some trim tabs like the real boat. On a 1/12 boat they do make a difference from the up position (bow lifts just like yours in the picture) to the down position bow stays down.

Regards

John
Title: Re: baby Severn
Post by: J.beazley on November 10, 2006, 08:28:09 am
Cheers for the observation johno  ;D

already got some trim tabs on order just waiting for them to get here so i can pop rivet them on.
then all i need to do is adjust the trim to where i think it should be.

will post a pic when they get here

Jay
Title: Re: baby Severn
Post by: Shipmate60 on November 13, 2006, 07:03:50 pm
Are you happy with her now Jay?

Bob
Title: Re: baby Severn
Post by: J.beazley on November 13, 2006, 09:12:17 pm
yes bob ;D

the only thing that lets it down now is the "play" time, new battery pack will be on the way shortly giving me longer times on the water.

the only other thing im in the process of doing is fitting a set of trim tabs, hopefully she will sit a little more level and this may or may not raise her out the water a little more.

apart from all that aside im more then happy with the little toy.

Jay
Title: Re: baby Severn
Post by: J.beazley on November 21, 2006, 09:37:23 pm
just an update on my little "toy" ive added a set of trim tabs.

using 2 pieces of brass sheet at 50mm long they are perfect and now she sits lovely on the water at full throttle.
i havent noticed any "drag effect" so to speak as she still gets up on the plain easy and cruises at a far speed.

(http://img.photobucket.com/albums/v479/jayimageservices/general/IMAG0001-1.jpg)

will post pics of her on the water when i have someone to control her while i snap away ;D

Jay
Title: Re: baby Severn
Post by: Aston on November 21, 2006, 11:43:48 pm
Hi Jay,  sorry for the delay in replying  - computer went into meltdown mode, and I only got it back today  :-\

The article is in the Model Boats kits special which came out earlier this month.

After all these years building and sailing model boats, and with my excellent command of the English language, I am now at last a publisht auther  ;D

Cheers

Aston
Title: Re: baby Severn
Post by: J.beazley on November 22, 2006, 06:11:08 pm
i read the article in model boats aston, good right up by the way.

when i get time im going to make a new superstructure out of thin plasticard, 1 because it will be lighter and 2 i can add some more detail.

Jay
Title: Re: baby Severn
Post by: modeliggy on January 07, 2007, 09:40:50 am
Hi,
I am a new owner of a baby severn thanks to a Xmas present and am interested in upgrading motors etc. I have tried to obtain a copy of the Model boats magazine article but cannot find a copy. Can anyone help with a copy of the article to get me started on the rebuild.

Thanks,

Ian
Title: Re: baby Severn
Post by: barriew on January 07, 2007, 01:48:39 pm
You should be able to get a copy of the 'Kits Special' Model Boats Issue here 01689 899200 or customer.services@encanta.co.uk.

Barrie
Title: Re: baby Severn
Post by: J.beazley on January 07, 2007, 02:04:44 pm
you could always wait until the end of this month and get a copy of Marine Modelling Magazine, there featuring the conversion in next months mag.

if you want any info just shout i shall try my best to inform  ;D

Jay
Title: Re: baby Severn
Post by: ofat1 on February 04, 2007, 03:25:14 pm
Hi, Just finished this project,the Life boat looks great, same set up as J Beazley as I am a novice and no idea how to R/c boats, other than Sail winches and rudders!
Great article, it has helped me in understanding motors, engines etc.
I have 2 x 380 motors, a viper 15a esc and a dodgy 9v 1800mAh rechargable battery from an old r/c car,she ran fine for 3 mins, cutting out 30 metres away, a short range i thought, as my r/c yachts will cover over 150 metres using the 2 channel Futaba gear, possible esc interference? but she ambled along for 10 mins at a medium slow pace until dying completely.

My questions are, is there any way to increase range, (re-siting esc?)
and you have said you may upgrade your battery, what would you be looking at, more V or mAh, i have seen 7.2 2100mAh batts on ebay but am unsure if the esc can handle it.
Title: Re: baby Severn
Post by: DickyD on February 04, 2007, 04:53:39 pm
Hi
Afraid I dont know the answer to your problem, but if you are after a new battery try these people first

http://www.component-shop.co.uk

Some of the chaps on here have used them and they apparently give good service and cheap prices.
Sorry , that sounds like an ad for an escort agency. ???

Richard ;)
Title: Re: baby Severn
Post by: J.beazley on February 04, 2007, 06:18:22 pm
glad to see im not the only one playing with these litle "toys".
the way i overcome my trouble with volts and running times was to go up in volts to 8.4volts 2700mah and im using a light weight pack.

the key is to keep the weight down, your ESC can take upto 12volts so i would suggest using a 9.6volt AA cell pack as there light and you have the power.

Jay
Title: Re: baby Severn
Post by: ofat1 on February 04, 2007, 06:49:23 pm
Thank you both, i have now ordered battery packs 9.6 v 2200mAh from the component shop suggested, good price too I thought, compared to e bay.

So to clarify the Esc amp rating, this is for a full amp and not the mAh I thought?
Title: Re: baby Severn
Post by: ofat1 on February 06, 2007, 06:15:55 pm
Me again, attatched pic of myBaby Severn on the water, lovely turn & speed,the batteries lasted a good 20 mins on 3/4 speeds around the pond, good choice, thanks, just a quickie on electrics on this thread, let me know if i need to ask else where?

I may be over cautious, but i fitted a 10 amp in line fuse in the setup to protect the esc, this blew nearly straight away, i then fitted 15 amp fuse which was ok until i attempted full speed, as i said before i was all overr the pond @ 75-80% power, but the last notch proved too much! Am i being over cautious with the fuse ,although i would rather blow the 25p fuse than £20 esc?
Title: Re: baby Severn
Post by: J.beazley on February 06, 2007, 06:27:53 pm
looks like you get good speed with your Severn.
better off blowing fuses at least there cheap to replace.

dont think i have ever taken my Severn to full throttle so wouldnt know if it might blow my in-line fuse.
could only suggest going upto a 20amp ESC and use a 15amp fuse.

Jay
Title: Re: baby Severn
Post by: ofat1 on February 06, 2007, 06:59:04 pm
Cheers Jay,
Didnt know if you were going to say the esc should handle the amp or not, i might just have to keep to 75% for the time being,do you not think that even with a 20 amp esc i still might blow the 15 a fuse? and also does the esc draw more current the larger it gets? therefore negating any pwer improvements.
regards Steve
Title: Re: baby Severn
Post by: Stavros on February 06, 2007, 11:35:28 pm
Have done a conversion myself using MFA300 motors will post piccies asap and let you know what it goes like Stavros
Title: Re: baby Severn
Post by: J.beazley on February 07, 2007, 03:07:47 pm
Get some pictures up Stavros ;D

I was thinking just how many people have done this type of conversion???
would be nice if companys like Impact worked with modellers like us to improve there models, seeing as a fair few of us have taken it apart and remoulded it into a nicer model.

Jay
Title: Re: baby Severn
Post by: barriew on February 07, 2007, 05:24:10 pm
do you not think that even with a 20 amp esc i still might blow the 15 a fuse? and also does the esc draw more current the larger it gets? therefore negating any pwer improvements.
regards Steve

It might still blow the 15A fuse, but you would have another 5 amps to play with - so could try a 20A fuse. The amount of current drawn by the ESC itself is more or less constant regardless of rating.

Barrie
Title: Re: baby Severn
Post by: ofat1 on February 07, 2007, 05:39:32 pm
Barrie,
thanks for that, this is the way i am now inclined to go, i will try 20a esc & 20a in line fuse (as this is the nearest ampage i can get) but it should still give the esc protection.
This is my first r/c motor fitting, boy what a learning curve! Bottomless pockets required eh!
Regards Steve
Title: Re: baby Severn
Post by: J.beazley on February 07, 2007, 06:32:17 pm
I think including the cost of my model ive spent around the best part of £120 on my little Severn.
Im in the process of building a new super structure out of thinner plasticard which is proving to be difficult.

Thinking about it i might just buy another Severn and use the lightest hardware i can get and see how well it performs.

Jay
Title: Re: baby Severn
Post by: johno 52-11 on February 07, 2007, 07:46:52 pm

I was thinking just how many people have done this type of conversion???
would be nice if companys like Impact worked with modellers like us to improve there models, seeing as a fair few of us have taken it apart and remoulded it into a nicer model.

Jay

Hi Jay

The problem is that you are looking at this from a modellers view. I met the guy from the RNLI who was setting this model up a few years ago. What he was after was a RTR for less than £50. I am aware that there have been quite a few that have had problems with the pod motors. My hope is that a few kids will enjoy playing with them and when they break will find the information from sites like this and the articles that have been published in the mags on how they can be improved and have a go at updating them. Then hopfully they will see a model  kit and get that and have ago a building a boat and that way we get some youngsters intrested in our great hobby. The main thing is that if a youngster comes to you and says I have a broken RTR what can I do with it don't tell them to throw it in the bin but point them to the information about how to convert them. This might get them intrested and then you have a young modeller.

John
Title: Re: baby Severn
Post by: J.beazley on February 07, 2007, 08:05:17 pm
I see what your saying John, maybe i should of thought before my fingers hit the keys.

just a thought it would be a good idea if the rtr boats had hop-up upgrades that could be bought seperately, that way kids could upgrade as and when money allows them to. Bit like us with our bigger models we buy a kit and upgrade as we go along.

Jay ;D
Title: Re: baby Severn
Post by: ofat1 on February 07, 2007, 10:28:34 pm
Without Jay & Astons' posts on this site and marine modeller mag, my 10 year old son and myself an addicted sail boat nut, would not have tried this upgrade, we just didn't have a clue. So on that note we say thanks to getting two generations into this!
We have enjoyed it so much we now intend a type 23 Frigate construction.
Steve & Jack
Title: Re: baby Severn
Post by: J.beazley on February 08, 2007, 02:38:17 pm
Im glad i could be of assistance and im sure the late Aston would be happy.
I started with my little Severn then went on to building my Schutze and havent looked back since.

dont know whats next on the table but i want it to be BIG.

Jay
Title: Re: baby Severn
Post by: explorer750 on February 21, 2008, 05:37:10 pm
Could you use a single 500 motor instead of two 380's as this will run on a 15A esc with no problem.
Title: Re: baby Severn
Post by: Shipmate60 on February 28, 2008, 01:58:50 am
Yes, but a graupner 400 should be enough power.

Bob
Title: Re: baby Severn
Post by: explorer750 on February 28, 2008, 05:58:07 pm
To run a scale boat you would need two shafts and so a gearbox is needed can anyone recommend one.
Title: Re: baby Severn
Post by: banjo on February 28, 2008, 06:02:19 pm
Belt drive
 O0
Title: Re: baby Severn
Post by: Shipmate60 on February 29, 2008, 10:06:03 am
On of the problems with this severn is weight, the hull and superstructure take her almost to waterline.
The original electronics is a single unit, but when fitting her out with rudders, receiver and servos can make her rather deep.

Bob
Title: Re: baby Severn
Post by: explorer750 on February 29, 2008, 05:14:35 pm
Running one motor instead of two would help this.
Title: Re: baby Severn
Post by: Willit on February 29, 2008, 11:40:23 pm
this is all very interesting

I've linked it to my friend who has one of these as bought.

Its performence was sluggish to say the least, and it took me a while to figure out the steering on it (yes it really did confuse me!)

I know for a fact he won't do any of this stuff to it, but its good for him to know.  He is a young enthusiast who might, just might, take up the challenge!

I've set him off on a project by giving him an old ABS hull I had knocking around.  This had a shaft and prop as well as a rudder already fitted, and I myself fitted a deck, so he's off to a good start.
Title: Re: baby Severn
Post by: Martin (Admin) on July 31, 2008, 02:21:57 pm

Any converted one of these boats to single screw?

Martin
Title: Re: baby Severn
Post by: Shipmate60 on July 31, 2008, 03:59:27 pm
Yes Martin, there are lots about.
There were at least 3 at Beale this year all single screw.

Bob
Title: Re: baby Severn
Post by: Martin (Admin) on July 31, 2008, 07:50:22 pm
Excellent! I ran mine yesterday at lunchtime and the fitted motors are ..... crap!

Anybody on here got a photos of the internals of their single screw conversion of the "Baby" Seven please?

Title: Re: baby Severn
Post by: Shipmate60 on July 31, 2008, 07:54:07 pm
Be a devil and go brushless!!!

Bob
Title: Re: baby Severn
Post by: Martin (Admin) on October 11, 2008, 01:24:22 am
Here's my conversion!  http://uk.youtube.com/watch?v=leOgy2izc2Q (http://uk.youtube.com/watch?v=leOgy2izc2Q)
Article to follow...

Title: Re: baby Severn
Post by: Tester on October 11, 2008, 09:04:16 am
That's a coincidence, I just dragged mine off the shelf and started to convert to single screw yesterday.

I'd be interested to see your build Martin, before I get to far with mine

Richard
Title: Re: baby Severn
Post by: Martin (Admin) on October 11, 2008, 09:23:04 am
Will do...... don't fit an M2 prop shaft, use a M4!  :(
Title: Re: baby Severn
Post by: J.beazley on October 11, 2008, 09:35:40 am
Blimey this thread still going  :o
Almost a year on and my little Severn is still going strong except my son uses it as more of a bath toy now more then anything  ::)

Jay
Title: Re: baby Severn
Post by: kinversand on May 07, 2010, 11:50:19 pm
Martin,

Still interested in hearing about your baby severn conversion.

Also, why do you say not to use M3 shafts ?

Cheers

Dave
Title: Re: baby Severn
Post by: Shipmate60 on May 09, 2010, 12:02:55 am
You wont get a ready made prop to fit a 3mm shaft.
The Standard Shafts are 2 mm, 4mm. and 5mm for scale models.
Some odd sizes for IC boats.

Bob
Title: Re: baby Severn
Post by: kinversand on May 09, 2010, 09:06:14 pm
Hi Bob,

and thanks for your reply, however I beg to differ !

Raboesch make some M3 propshaft / sterntube assemblies, complete with A / P brackets and propellers to go with them !

See catalogue 2 at www.raboesch.nl

Cheers

DS
Title: Re: baby Severn
Post by: DickyD on May 09, 2010, 09:17:29 pm
Hes right Bob RABOESCH do shafts and props for M2 and M3 Deans Marine sell them.  :-))
Title: Re: baby Severn
Post by: Shipmate60 on May 09, 2010, 10:11:57 pm
So use 3mm props and shafts.
They do seem rather expensive and exclusive.
If you want to double the price of the baby severn who am I to argue.

Bob
Title: Re: baby Severn
Post by: Martin (Admin) on May 09, 2010, 10:47:14 pm
Most commercial props are M2, M4 or even 4BA, 2BA.
Title: Re: baby Severn
Post by: DickyD on May 10, 2010, 08:11:31 am
So use 3mm props and shafts.
They do seem rather expensive and exclusive.
If you want to double the price of the baby severn who am I to argue.

Bob
Cheapskate  ok2
Title: Re: baby Severn
Post by: kinversand on May 10, 2010, 05:29:45 pm
Will do...... don't fit an M2 prop shaft, use a M4!  :(


Martin,

Still interested in your conversion - do you have any pics please ?.  Also interested in why you said to stay away from M2 propshafts.

Cheers

DS
Title: Re: baby Severn
Post by: Martin (Admin) on May 10, 2010, 10:48:29 pm

 
My conversion re-posted here: 
http://www.modelboatmayhem.co.uk/forum/index.php/topic,56885.0.html


(https://i.imgbox.com/m8NBkXQ1.jpg)
Title: Re: baby Severn
Post by: RaaArtyGunner on May 10, 2010, 11:36:47 pm
You wont get a ready made prop to fit a 3mm shaft.
The Standard Shafts are 2 mm, 4mm. and 5mm for scale models.
Some odd sizes for IC boats.

Bob

Very good advice,  :-)) have had all the trouble in the world trying to get even 2mm. >>:-(
Whereas everybody and their dog has 4mm.  :-))
Title: Re: baby Severn
Post by: kinversand on February 18, 2012, 12:27:41 am
Hi all,

Photographs at last:

Title: Re: baby Severn
Post by: kinversand on February 18, 2012, 11:27:47 pm
(http://s18.postimage.org/58lfguj7p/DSCN1373.jpg) (http://postimage.org/image/58lfguj7p/)

(http://s18.postimage.org/y8kfakr7p/DSCN1377.jpg) (http://postimage.org/image/y8kfakr7p/)

(http://s15.postimage.org/4v6vlurzb/DSCN1372.jpg) (http://postimage.org/image/4v6vlurzb/)
Making a jig for the ends of the propshatfs.

(http://s13.postimage.org/7q4t1dd03/DSCN1383.jpg) (http://postimage.org/image/7q4t1dd03/)

(http://s16.postimage.org/xy6afw1f5/DSCN1485.jpg) (http://postimage.org/image/xy6afw1f5/)
Drive layout Mk I. Stern tubes, shafts, glands, and couplings in position.

(http://s17.postimage.org/48maw056j/DSCN2011.jpg) (http://postimage.org/image/48maw056j/)

(http://s13.postimage.org/hfjgptbtf/DSCN2014.jpg) (http://postimage.org/image/hfjgptbtf/)

(http://s14.postimage.org/g7w2eug0t/DSCN2016.jpg) (http://postimage.org/image/g7w2eug0t/)
Internal layout Mk. II. Motors, ESC, glands, stern tube brace and steering servo moved aft by 40mm. Propshafts, stern tubes and steering pushrod shortened - All to improve fore and aft trim.

(http://s18.postimage.org/6fmju4fk5/DSCN2036.jpg) (http://postimage.org/image/6fmju4fk5/)

(http://s15.postimage.org/krwgr35lz/Propulsion_steering_gear_dims.jpg) (http://postimage.org/image/krwgr35lz/)
Stern gear & propshaft jig dims.

(http://s17.postimage.org/7j1ixw4vv/Stern_details.jpg) (http://postimage.org/image/7j1ixw4vv/)

(http://s18.postimage.org/ufb8dfbnp/RK_370_SD_2870_motor.jpg) (http://postimage.org/image/ufb8dfbnp/)

(http://s13.postimage.org/cofwwsrgz/Severn_at_sea.jpg) (http://postimage.org/image/cofwwsrgz/)
Title: Re: baby Severn
Post by: kinversand on February 19, 2012, 12:15:14 am
Like just about everyone else, I wrangled with the weight issue, and the truth is that it's just about impossible to get absolutely right.

The poblem comes from the fact that in its' unconverted form, the model is too light for its' size. This is due in part to the size and weight of the RC gear and powertrain originally installed, as it's far lighter than would be any proper RC and propulsion / steering gear (remeber also that the model originally had no rudders or steering servo). To compensate, the designer(s) made three simple, but significant alterations to the original design.

Firstly, they altered the underwater profile, substantially reducing the deph of immersion at the transsom, threby reducing the displacement.

Secondly, the first mod was only partially successful, so they proceeded to paint the waterline quite a bit lower down, particularly at the stern - the unconverted model floats noticably higher by the stern than does a full size Severn.

Then finally, they positioned the exhaust ports about 10mm lower on the transom to make the model look right.

All this adds up to a model which when converted is invariably a little overweight, and goes stern down when full power is applied. You will all be glad to hear that mine is no different ! Therefore, I came to the conclusion that even a 380 motor was going to be too heavy. So initially I went with a pair of 25mm brass props on M3 s/s shafts (from Raboesch), driven by a pair of 280 motors, running from a 7.4v 2200 mAH Li-Po, through a Viper marine ESC, and Hi-tec Zebra 3 RC gear (40MHz), and a micro servo for the rudders. This gave great speed, and good endurance, but on only the second outing I managed to melt the backs out of both motors ! - Back to the drawing board !

Anyway, after much headscratching and surfing of the interweb, I found a great compromise between the power of a 380, and the weight and efficiency of the 280 - a motor that IMHO is too little talked of outside heli circles - the 370: Only 10 grams heavier than a 280, with a steel back, ventilated can, and quite happy at 7.2 volts.


(http://s7.postimage.org/8gep4xf6f/28_09_2011_20005.jpg) (http://postimage.org/image/8gep4xf6f/)

(http://s15.postimage.org/kn6y60jdz/DSCN2008.jpg) (http://postimage.org/image/kn6y60jdz/)

The battery that I ended up with (quite by accident) fitted the modified battery compartment like a glove, and allows room for the leads which connect to a deans plug, bonded into the side wall. The compartment stays almost completely dry, and even if it does get flooded, does not allow water into the bilges. It also means that I don't have to remove the suerstructure to recharge. As regards the height at which the battery is mounted within the model, I can confirm that the model corners flat at all speeds when not planing, and even when I sent it out on Fareham Reach in a blow (with chop!), although it was a real cow to keep head to wind, even with the wind and waves abeam, the model showed no signs of being anywhere near capsizing. To complete the working side of the model, I made the original on/off button waterproof, and reisnstated it, so that there is no need to remove any covers to switch the model on or off.

The final plan now is to re-paint the hull above and below the waterline, then apply new decals and stripes.

Finally, does anyone have any suggestions for a suitably scaled radar fitting ? as my boat is currently doesn't have one !
Title: Re: baby Severn
Post by: dodgy geezer on February 19, 2012, 01:17:00 am
Baby Tamar from the EeZeBilt site. Not finished yet, but one day...  :embarrassed: :embarrassed:


(http://s18.postimage.org/h9jbo7sg5/IMG_4460.jpg) (http://postimage.org/image/h9jbo7sg5/)
Title: Re: baby Severn
Post by: Steven.T on December 30, 2013, 12:45:15 am
Martin, digging up an old topic, sorry if I've missed this, I can't find it anywhere. What prop did you use for your baby Severn?
I'm in the process of converting one and if I can get it to plane only half as much as that, I'll be happy!
Cheers,
Steven
Title: Re: baby Severn
Post by: Martin (Admin) on December 30, 2013, 02:05:14 am
 
 Probably a 25 or 30mm M2 Graupner prop.
 http://www.cornwallmodelboats.co.uk/acatalog/graupner_propellers.html#a1_21G2309_2e65L

 I would recommend a slower motor, or maybe a Speed 400 7,2v or 8.4v
Title: Re: baby Severn
Post by: Gardener on August 05, 2017, 10:31:28 pm
What is the best way to cut out the bottom of the plastic battery box for clearance ?
What tool best to use ?
Title: Re: baby Severn
Post by: Martin (Admin) on August 07, 2017, 06:58:04 am
 
I tried several ways but a cheap soldering iron, with a tip hammered into a knife edge was most effective!

http://www.modelboatmayhem.co.uk/forum/index.php/topic,56885.msg591166.html#msg591166

 
Title: Re: baby Severn
Post by: Gardener on August 07, 2017, 09:44:02 am
Thanks