Glassing / Which is Stronger?
 

Hi All,
Building a wing, bare skeleton, sheeted with 2 mm depron. will apply two layers 3/4 oz cloth. I also have 2 oz. cloth. No vacuum bagging just brush a squeege.Was wondering which would be stronger? Two layers 3 /4 or one layer 2 oz. Which would be lighter? Opinions?

Thanks
Al

RE: Glassing / Which is Stronger?
 

I suppose if you put second layer of 3/4 glass down with the weave at 45 degrees from the first, it'll be stiffer than simply laying two layers with the same weave orientation. If both layers are applied in the same wetting, it would probably be a bit lighter than one layer of 2 oz. As for which would be stronger, someone else may be able to better answer than me.

Another choice would be to simply sheet the wing with G10. I am getting ready for a TopFlite P-51B build where I will be using .010" G10. G10 is sheet fiberglass. Flite Skin is a brand name version. You can get generic G10 in thicknesses of .005" on up. It is applied to the frame with polyurethane glue.

I used .007" FliteSkin on the control surfaces and fuselage of this modified 4 * 40. For the flat ply areas I used contact cement.
One other note, it does not conform to compound curves.


Scott