Propeller recommendations

[Baby pontoon]

Just bought a 2019 Bennington Tri toon outfitted with a Yamaha 115 VMax.
Engine came with the attached prop.
It seems like the engine rev’s to high? Dealer suggest to keep rpm’s under 6,300 however at full throttle I’m at 7,000 rpm’s.

 

[Jack M]

This thread may help .

Prop for SX22

I recently bought a 2022 SX22 with a 115hp Yamaha. Previous owner had a 13 5/8 x 13 K prop and said that I wouldn’t pull tubers well. He switched to a 13 1/2 x 14 K which he said was much better. It does have a great hole shot, but rpm’s are too high. If you aren’t careful rpm’s hit 7000...

club.benningtonmarine.com

 

[Vikingstaff]

That motor is under propped/pitched if you are going above the 6300 RPM max. You should not have to manually do that, and it also means you are leaving performance on the table. A couple of things.

(1) We have a sub-forum called “Member Zone: Props and Power”. Go to it in the drop down Forums tab. Next the first item is “List Your Specs Here” Browse through it to find similar boats. Look for these characteristics that match your boat since you didn’t mention them in your post: Model/Length/specifically which of the various tritoon hull options do you have. When you have boats that match those characteristics, see what prop they are using, and their performance characteristics with it.

Overally though, You need a different prop. Sort out if you want cruise fuel efficiency, hole shot, top end WOT, etc… Different props are designed for different performance. Then its a matter of dial in the right size.

If you reach out to Ken at Propgods, he has guided A LOT of members. Super knowledgeable. Probably dials you in almost immediately. Good luck!!!