Selecting A New Prop

cigar_stub

Petty Officer 3rd Class
Joined
Jun 30, 2007
Messages
88
I have a 2002 Yamaha 115hp outboard on a 19' center console. The current prop is a 13x19 K (that's what I can read from the prop itself). My Seloc manual states the test prop for this motor was a Kent Moore Part #YB1624. I assume that means a 16" 24 degree pitch and I also assume the current prop is 13" with a 19 degree pitch. I have very slow takeoff from dead stop and with just me in the boat, once I'm up on plane which also takes longer than I think it should, I run about 33 mph at 5500 rpm which is the recommended top end.

I want to order a second prop to both see if I can improve the performance and to have a spare. Any thoughts about the current prop vs the factory test size? Also, any suggestions on what I should purchase to improve the hole shot? I was thinking of getting the smart tabs to improve the time needed to get on plane, but thought a different prop might help as well

Thanks in advance for any help/suggestions.
 

rodbolt

Supreme Mariner
Joined
Sep 1, 2003
Messages
20,066
Re: Selecting A New Prop

that kent moore part number is for the test wheel.
its a diagnostic tool that provides a known engine load without producing much fwd or reverse thrust.
your current prop is about correct for the max RPM.
you may look into having some vents cut into the prop body just fwd of the blade edges.
a post in the prop section may get more information.
 
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