On Sep 1, 4:35 pm, Brad wrote:
Anyone out there know if there have been any sailplane wings made that
use a glass spar and carbon skins?

Cheers,
Brad

As carbon fiber has a higer stiffness than glas fiber the skin would
carry ony the load and the glass spar would ony adding wieght and
cost.
The spare in a glider wing will carry the bending load, the skin will
carry the torsion load. With the higer stiffness of the carbon fiber
the skin will carry torsion load as well as the bending load. That
will lead to a overloaded skin befor the spar has a change to carry a
significant amount of the bending load. If the skin is thickend up
enugh the spare becommes useless.
So you can build a glas spare with a glas skin, a corbon spar with a
glas skin, all carbon, and wings withoud spar in glas or carbon were
the skin carrys all the load.