"COLIN LAMB"
thlink.net:

"The point loads in fiberglass airplanes are carried through strong
bulkheads, bonded very well to the body. I don't think what your
describing has that.

If the use of a single layer of wood is used to be the core, instead
of foam, and the same thickness of fiberglass is applied, as it would
be in the fiberglass and foam plane, there should not be a problem.
Is this the intent?"

Yes! The cedar strips are simply space, rather than strength. The
rigidity comes from the 1/4" thickness of the cedar strips, plus the
thickness of the multi-layer epoxy coverings. My kayak has 3 layers
of cloth on the exterior, plus epoxy resin..The cedar strip is used
for beauty and the "plastic" ability to conform to compound curves.
The strength comes for the thickness of the cedar times the layers of
epoxy - really like a foam aircraft. Although additional strength
could be gained by cross laminating 2 layers of cedar strips, it would
also add to the weight - and the change of delamination between layers
may increase. Just as in foam airplanes, bulkheads of other means of
transferring stress from a single point to a much larger area are
necessary.


Ouch! 1/4 inch? All covered with resin this would be fairly heavy,
methinks. What does one canoe weigh? The fuselage would probably be roughly
double that, plus formers., hardware, ....