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Light weight construction materials

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Light weight construction materials

Unread postAuthor: crazyfreak0075 » Sat Jun 02, 2007 7:11 pm

Hey all Im looking for some ideas for building construction materials for larger model airplanes that i hope to put a Valveless rocket on. Materials such as Balsa wood are already known so please dont mention that. Im looking for anything you can buy to anything you can make.

Send me some idearz!
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Unread postAuthor: hi » Sat Jun 02, 2007 7:17 pm

lots of my airplanes use ply wood. its not that heavy and works quite well.
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"physics, gravity, and law enforcement are the only things that prevent me from operating at my full potential" - not sure, but i like the quote

you know you are not an engineer if you have to remind yourself "left loosy righty tighty"
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Unread postAuthor: COD_FILLETS » Sat Jun 02, 2007 7:25 pm

If you can afford it, try carbon fiber. You could also try foam. Take a look at remember www.RCGroups.com lots of neat RC stuff.
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Last edited by COD_FILLETS on Sat Jun 02, 2007 7:28 pm, edited 2 times in total.
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Unread postAuthor: Pete Zaria » Sat Jun 02, 2007 7:27 pm

Fiberglass is strong, lightweight, and reasonably easy to work with.

I'd imagine you could mold the entire thing out of bondo if you really wanted to...

You should find an R/C forum for this question. They'd be able to help you out more there.

Peace,
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Unread postAuthor: hi » Sat Jun 02, 2007 7:30 pm

a bondo airplane, however cool it may be, would never get off the ground.
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"physics, gravity, and law enforcement are the only things that prevent me from operating at my full potential" - not sure, but i like the quote

you know you are not an engineer if you have to remind yourself "left loosy righty tighty"
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Unread postAuthor: Pete Zaria » Sat Jun 02, 2007 7:35 pm

hi wrote:a bondo airplane, however cool it may be, would never get off the ground.


I wouldn't recommend attempting to make the entire plane from bondo, but individual parts (cowlings, engine covers, body panels, etc...) should be fine. Bondo is not strong enough to be used for structural joints or wings, of course. I'm just saying, it could probably be done. Fiberglass or balsa are better choices.

I'm curious about this "valveless rocket". What do you have in mind?

Peace,
Pete Zaria.
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Unread postAuthor: crazyfreak0075 » Sat Jun 02, 2007 7:44 pm

Tell you the truth i need to get a arc welder first to make it.
I hope to just integrate a valveless rocket or two, (depending on the trust calculations) into the plane. I'm hoping to make it R/C too. I'm thinking this might be a stretch even for me but I have people that can assist me too.

Any who, as far as fiberglass goes, how exactly do you buy this. Can you just buy the resin. Then make your mold???
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Unread postAuthor: jackssmirkingrevenge » Sat Jun 02, 2007 11:17 pm

carve the shape out of foam, hollow it out leaving as thin a wall as you can then pull nylon stockings over it and paint with fibreglass resin
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Unread postAuthor: iPaintball » Sun Jun 03, 2007 6:55 pm

Do you mean a valveless pulse jet?
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