sizing my prop

[rcrochet]

I need help sizing a stainless propeller for a 25 2cylinder YAMAHA on a Alumaweld (Express)1546VJ. Note:this is not the Hyper Lift hull.This motor from the factory ha an aluminum 9 7/8"x10 1/2" prop. The boat runs good but since I put a jack plate the motor cavatates...What do I need a 10"x9"?????????

 

[Spidybot]

Re: sizing my prop

First of all, you should tell more about your problem. Cavitaion can be caused by several things.<br /><br />Let's know the details about the cavitation plate/keel line aligment, the trim angle, what rpm you reach and under what circumstances cavitation occurs.<br /><br />Even boat weight, max. recommended HP for it and more would be nice.