pontoon prop?

[kaashlock]

I am running a 12 1/2 x 8 prop on a 1994 60 hp Merc. pushig a 21' pontoon approx. 20 mph at 5900-6000 rpm.
Can I got to smaller diameter and bigger pitch and gain anything as far as lower rpm and maybe a little more speed?
Kenny

 

[Bondo]

Re: pontoon prop?

Forget about Diameter,+ change the Pitch to get the WOT to where it belongs.......

 

[WillyBWright]

Re: pontoon prop?

The smaller diameter props for those are for planing boats. You want those big blades for toons. They also offer a 9" and a 10-1/2" pontoon prop. I would generally put a 10-1/2 on 22' and less, but it depends on other factors as well.

 

[kaashlock]

Re: pontoon prop?

Forget about Diameter,+ change the Pitch to get the WOT to where it belongs.......

 

[kaashlock]

Re: pontoon prop?

will 10 1/2 help me maintain speed with less rpms?
Kenny

 

[WillyBWright]

Re: pontoon prop?

With each steeper pitch, you should gain speed and drop RPMs. We're not talking much. A few MPH. 6000 doesn't necessarily concern me. That allows for a lot of passengers and gear.

 

[DJ]

Re: pontoon prop?

6000 doesn't necessarily concern me. That allows for a lot of passengers and gear.

Agreed.