Canuck Bob wrote:

I am working slowly on an evolving Fly5k design and considering a
swept forwrd wing. Does anyone know anything about thier design?

A little bit g
Like you say, a little forward sweep can get the spar out of the
way in the cabin. The big thing you have to work out is the potential
for structural divergence - the natural twist of the wing tends to
increase AOA, making the twist increase, etc...so you'll have to
make it stiffer than a straight or aft-swept wing.

Dave 'aeroelastica' Hyde