Zero Thrust Seneca
 

Does 3 blade make a difference compared to 2 blade?

I have heard completely opposite answers. 2 blade should be 16ins and 3 blade 14 ins said one highly experienced operator. That is not the generally accepted view where 14 ins seems to work for both. Can be very difficult to find a nicely rigged aircraft on a non turbulent day and prove one way or another (by fx then comparing rudder trim position on 14 ins or whatever after unfx).

Any ideas?

Seneca 1 is 11 inches.

HFD