I purchased a Solas Amita 3 (11-3/8x12) for my Yamaha F60. It turns 6300 RPM @ WOT. I want to buy a Amita 4 blade for running the shallows. I know that if I were to increase the pitch by one on the Amita 3 my RPMs would drop 200. Will I experience the same proportional shift in RPMs with...
