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Old Nov 07, 2010, 11:49 AM
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Strongsville, OH
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Good wing loading on a sailplane. Homebuilt balsa?

Hello!
I was just wondering if anyone out there built some mini sailplanes using balsa sheets sold at hobby stores. I noticed that the boards are simple to make into wings, and they are long perfect for large sailplane wings.
I have not had any previous experience with gliders, but I am building a balsa model( I will post pics soon), maybe others build ones like me and can throw me a little hint?
I can figure out wing loading when the plane is done, what numbers should I shoot for?
Thanks!
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Old Nov 07, 2010, 01:14 PM
Balsa Builder. With some foam.
ArneHu's Avatar
Eastern Norway Scandinavia
Joined Dec 2009
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I build this with Balsa sheets from my LHS. But I don't know the wing load.
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Old Nov 07, 2010, 01:53 PM
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wow looks very nice! I will post mine soon
I want to cover mine too but I dont have the tools plus it adds to the cost.
How does it fly? no motor? does it stay up there long?
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Old Nov 07, 2010, 02:28 PM
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You can make a very nice small glider with a solid wood wing, if you can find good enough wood:
http://charlesriverrc.org/articles/a...gee40_wood.pdf
Note that the built up option shown is only if you can't find 4 lb wood. Another option recommended by the designer is to go a little thinner with the airfoil and use 5 lb wood. C-grain of course. Or you can do the 36 inch version. But the bigger it is, the better it flies.
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Old Nov 07, 2010, 02:39 PM
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oooh, very nice! I think that will be my next project!
What I did is took 2 36" pieces, sanded the edges into the best airfoil i could, and gluded those 2 pieces together, so now its 72" wingspan, but wings are not as wide, but it looks about right
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Old Nov 07, 2010, 08:28 PM
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How thick are these wings, and how wide? If it's too thin and too narrow, it might not be strong enough.
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Old Nov 07, 2010, 09:03 PM
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Strongsville, OH
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oh they are strong, just a little bit of flex to them, but they are pretty strong.
I think I'll put a motor on it just to be safe, plus I dont have a sling
I tried uploading pics but my camera fails haha
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