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Propeller sizing for my 231

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  • Propeller sizing for my 231

    Does anyone have experience in prop sizing a 231 ('87) with a zero hour Yamaha 250 ('00)?

    I currently have a stainless 3 blade, 19 pitch (diameter I am uncertain but has markings of "19 ML'). That propeller propeller only gave max. RPM @ 5000, 45mph.

    My prior Yamaha 250 gave me 50mph @ 5500 RPM. I would like to put on another propeller to get back the top end. Does anyone have any suggestions on the optimal prop size.

    Thanks very much.
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