Originally Posted by
joolstacho
Centre of gravity is ALL-IMORTANT!
It will always be between 25% and 30% of mean chord behind the L.E. on a conventional wing. (That's 25 to 30% of the wing area, - not just measured at the wing root).
The "around the first third" will give you a fairly 'frisky' flyer, tending to be over-sensitive, not for the beginner certainly.
Yes you are right. Depends also much on the wing's shape.