What size propellor should be on a boat engine johnson 50hp. the boat is a 4 metre pride ski boat?

Question

What size propellor should be on a boat engine johnson 50hp. the boat is a 4 metre pride ski boat?

Answer 1

I had a 13 whaler with a jack plate 1 skier & bugie border same time 15 pitch>13 pitch is to little all RPM no speed> Just watch top end empty 6000 rpms>Is a bit to much<

Answer 2

I'd say either a 13" or a 15" depending on how much weight you're carrying. I reckon you'd need the 13" for skiing. It should be revving at no less than 4500 and no more than 5500 at full throttle.

Answer 3

your 50hp motor is not enough to get a skier up on plane unless it is a small child. prop will make no didderence but a 4 blade is for power and a 3 blade for speed. OMC website gives prop specs.