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Old Jul 26, 2001, 07:54 PM
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Tampa, Florida
Joined Mar 2001
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carbon vs. balsa weight

Does anyone know the weight per mm2 of balsa versus carbon? I'm just looking for a few constanta to play with designing a plane....Thanks Ken
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Old Jul 26, 2001, 09:04 PM
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Andy W's Avatar
Marietta, GA
Joined Jun 1999
43,312 Posts
If you want an area comparison then you must specify the thickness. In volume, however, I'd say CF is lighter. Not much good alone, however, as it's not very stiff - best laminated, formed, or otherwise with epoxy resin. This will add significant weight, but you don't need much CF for equivalent tensile strength.
..a
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Old Aug 02, 2001, 10:46 AM
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Joel K. Scholz's Avatar
Kingsland, Texas USA
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Ken,
I do a lot of scratch building and incorporate carbon in all of my designs.It makes wings virtually bulletproof.. If you go to my site www.skydelight.com you will find weights of both round and flat stock graphite.
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Old Aug 03, 2001, 12:29 AM
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Tel-Aviv,Israel
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the specific weight of balsa is 0.1 (that is gr/cm^3) and the carbon with epoxy( done as it should) is 1.6.
however, you don't need as much carbon to get the strength of balsa, and you would probably take some weight off the airframe, but it will cost you much more...

regards
Avi
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Old Aug 03, 2001, 12:32 AM
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Thanks everyone!, Ken
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