carbon vs. balsa weight - RC Groups
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Jul 26, 2001, 08:54 PM
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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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Jul 26, 2001, 10:04 PM
Registered User
Andy W's Avatar
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.
Aug 02, 2001, 11:46 AM
Registered User
Joel K. Scholz's Avatar
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 you will find weights of both round and flat stock graphite.
Aug 03, 2001, 01:29 AM
Registered User
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...

Aug 03, 2001, 01:32 AM
Senior Gravity Checker
Thanks everyone!, Ken