Well, the manufacturer calls for a 2 stroke 108-120 range engines, and for 4 stroke 120-140 engines.I'm planing on 2 stroke engine. What about the propeller, I read on Top-Flite web site, according to some propeller chart guide, that propellers can range fron some 11x4 to 16x8.Which one are you using?

Schaye G.