Need help with prop recommendation for 22' pontoon

Jimmypop13

Recruit
Joined
Aug 28, 2016
Messages
1
Hey everyone! I have a 2013 22' Avalon Catalina rear fish pontoon boat. Today I hit somthing and completely tore off one blade on my prop so I figured instead of getting the same one again, I'd see what y'all recommend for a bit better performance and control.
The boat has two pontoons, not a tri.
The engine is a Yamaha F90LA making 90hp with an operating range of 5000-6000rpm.
I couldn't find the exact model of prop that's currently on it but it's made by Solas, is 3 blade, and is 13.75x13 and is painted black so I tbink it's aluminum
I usually have around 4 people and with a full tank at WOT, I'm turning an average of 5500-5600rpm and going 20mph.
Should I try to get WOT rpms up to 5900? I looked through a few Yamaha performance bulletins for similar configurations and they all seem to be turning 5800-5900rpms and going around 24-25mph. The props in those bulletins are around 13.5x14.
I was curious about the Yamaha Pontoon Performance prop though because the description makes it sound like it's ideal for a pontoon. It is a 14" prop so I'd be going up in size from my current setup (13.75") a little. Then I guess I'd have to go down in pitch right? To get the rpm's up around 5800-5900?

What do you guys think? Would that be a bad idea to go with a bigger diameter? I'm open to any and all suggestions
Thank you so much!
 

Scott Danforth

Grumpy Vintage Moderator still playing with boats
Staff member
Joined
Jul 23, 2011
Messages
47,499
welcome aboard.

its a pontoon, until you go bigger with your motor to get up on plane, your at displacement speed and a new prop would only raise or lower your RPM.

going from a 13p to a 14p will lower your RPM, not raise it. right now your proped correctly, so my recommendation would be to replace your prop with a like prop and get yours repaired as a spare.
 
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