Hi Web,
How does an autogyro work? I guess you mean that it does not
have a wing per sey, so what creates lift?
It does have a rotor of course which in esscence is rotating wings.
For complete detailed explaination of how rotating wings work
you will find in the September 2002 issue of R/C Report magazine
Good to see your interest, do come and join this interesting,
different and exciting way to enjoy modeling.
Good luck,

Hal deBolt