RC India

RC Models => Electric Planes => Topic started by: ashay99 on November 30, 2014, 03:39:16 PM

Title: 24" Hydroplane Build Log
Post by: ashay99 on November 30, 2014, 03:39:16 PM
Recently I have stated working on a Depron Hydroplane. The plans were easily available on net. And laser cutting depron was rather easy and cheap. I have assembled the parts about 60-70 %.
But now I m facing an issue (on a new idea I have thought about the plane), I want to fiberglass the hull to give it some extra strength and a nice finish. Bought some 2-3 m fiberglass cloth from Hobbyking but I didn't know which resin or epoxy to use for fiber glassing on depron.

Specs.
Reinforcement-
1mm carbon fiber strips
Fiber glassing

Power system-
Hobbyking Donkey ST2204-1700kv
Donkey 10amp ESC
900mAh 2C 2S Lipo
3x  HK15178 9gm servos
Title: Re: 24" Hydroplane Build Log
Post by: sanjayrai55 on November 30, 2014, 05:03:36 PM
Buy 24 hour Epoxy eg Araldite. Dilute it with NC Thinner (Duco thinner) till it just drips off the brush. Use that. However, check on some scrap Depron first - the thinner might attack the Depron!

If that happens, go to a fibreglass contractor and get some resin with accelerator and use that. Takes some time to dry though
Title: Re: 24" Hydroplane Build Log
Post by: ashay99 on November 30, 2014, 05:21:33 PM
I have tried araldite (without any dilution) and all it had done is formed a rubbery coat on the cloth which was not even stiff as it should be.(like for molding a canopy).
but m gonna try the way you have stated and will update the results soon.
Thank you
Title: Re: 24" Hydroplane Build Log
Post by: sanjayrai55 on November 30, 2014, 05:27:22 PM
Good Luck  :thumbsup:

I did it here: http://www.rcindia.org/boats/110th-scale-baby-bootlegger/ (http://www.rcindia.org/boats/110th-scale-baby-bootlegger/)
Title: Re: 24" Hydroplane Build Log
Post by: K K Iyer on November 30, 2014, 07:46:24 PM
@akshay99
Two alternatives.
My RCTLG wings covered using Bob Smith Ind, USA, Finish Cure epoxy, (from Hobby King),
fuselage using Nerolac Wonderwood PU.
18g/sqm fibreglass cloth from Hobby King on both.
For low stress use i find Wonderwood good enough, and easier to use. Apply small amount with a brush and spread with an old credit card.
Hope this helps.
Title: Re: 24" Hydroplane Build Log
Post by: sanjayrai55 on November 30, 2014, 07:49:11 PM
It's not a plane. It's not even Superman or a bird. It's a boat :D
Title: Re: 24" Hydroplane Build Log
Post by: K K Iyer on November 30, 2014, 07:54:38 PM
That's why i said low stress use.
Just gave examples of having used both with success.
Will be more careful in future  ;)
Title: Re: 24" Hydroplane Build Log
Post by: sanjayrai55 on November 30, 2014, 07:58:00 PM
 :hatsoff: Iyer sir
Title: Re: 24" Hydroplane Build Log
Post by: ashay99 on December 01, 2014, 01:43:52 AM
Well I liked the epoxy idea to be more accurate coz I have been looking videos on fiber glassing on YouTube and most of them used 30-60min epoxy. Now the next question - can anybody pls. tell me where I can get epoxy from. I cant wait to order from HK , so if there is any rc shop where I can get that stuff. Its out of stock at RCBazaar.  :(
Title: Re: 24" Hydroplane Build Log
Post by: sanjayrai55 on December 01, 2014, 06:01:14 AM
Just go to any hardware &paint store! Good brands are Araldite, Fevitite & Bondtite. Try to get the clear variety