Prop size

[KD5EXP]

I have a 28 foot pontoon boat rigged for fishing. I was using the prop that came with it and it was a real dog. I found a used 14 x 11 prop and tried it. The boat really likes it a lot better. Still could us just a little more rpm top end. The prop is so big it barely clears the housing. Where can I find a little smaller prop with the same pitch just to get a little more rpm. It's close now but If I want to have a spare prop might as well get what it likes. This is a 70 hp Johnson.

 

[Chris1956]

Gee, is that prop made for a Johnson motor? You can check the major manufacturers of props (OMC, Michigan Wheel, Quicksilver, Turning Point, Solas...) and see if you can find what you want in pitch and diameter. Usually the OEM decides the diameter, for a given pitch.

Any idea of the Max RPM that 'toon can achieve?