armody

The three blade prop on your PTS Mustang is a special made for the engine with its attendant flywheel it is the most efficient for your needs, do not change it at this stage in your flying, it will introduce another variable that you do not need at this moment.

Pitch speed is what dictates the speed of the aircraft so pitch for pitch and diamiter for diamiter pull the same revs and you will get greater speed for a higher pitch, but the loading on the engine goes up so the revs come down, it can take some time to find the ideal prop for a given airframe and engine combination, once you have experience you can hear if an engine is over or under proped whilst in flight, take some advise from your instructor on what prop to use.

I still use the 3 blade prop on my PTS trainer, the flywheel on the prop driver makes the engine very reliable in the tickover, I also use the flaps at a set positive angle to enable slow approuch and to keep the speed in check for the pupil. I have found that the set up by H9 is the best that can be achived with this aircraft for training.

I am afraid that many people think they know better, and they should know better than to question a manufacturer of the standard and stature of Hanger 9, after all they are in buisness to get you flying not crashing and they will do everything in their power to ensure you buy their products again.

Mike