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Sammy

04-14-2002 07:59 PM

Prop diameter ?

Is there a formula for predicting rpm changes based on a diameter change.

THX
Sam

Blackhawkdn

04-14-2002 11:18 PM

Prop Dia.

There is a direct formular fo prodicting the effect of diameter on power. I am sure what it is off hand. But as you drop dia. the power delivered to the water is reduced increasing rpm. Estimate about 300rpm per 1/4". Hope this helps some.

Sammy

04-15-2002 04:34 PM

Thanks ! it might help explain my problem.

Sam

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