RE: Prop for H9 Alpha 40
Just to clarify - the reason I suggested removing the flywheel weight is some 2-blade spinners will not seat down properly on the hub with the flywheel weight on. It's a case of each individual spinner needs to be checked to see how well the back plate seats on the hub. If the back plate seats properly with the flywheel weight on, just leave the weight on. The X-tra Easy 2 club trainer I instructed with for several years had a 2-blade prop and the weight was not removed. It worked just fine.
Hogflyer