For a 4.5 cu. in. engine 22-24", what do you recommend?

wood or carbon... ?

Zinger has some three bladed wood...

If you look on the Desert Aircraft site they have different carbon listed..

Call Bobby at Cactus Aviation. He has 3W CF 3 blades in the sizes that you are looking for.

Bolly also has a good bit of information to help with your application

http://www.bollyprops.com/carbonprops.html

Fox manufacturing handles Cleveland Cyclonics up to 32x10s in two blade and many three blades.

http://www.foxmanufacturing.com/stor...Carbon%20Fiber

Thanks guys, this is my first venture into the real engines-goes on a Ziroli 100" Stuka.