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what pitch in prop question?


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08-01-02, 07:55 AM   #1  
Thirdeep
what pitch in prop question?

i have a 1975 16 ft lund boat with side steering, it has a 35 hp johnson motor. and when i have it completely loaded it weighs about 700 lbs. my question is what size and what pitch in the prop do i need for the boat i described? thanks for replies thirdeep

 
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08-01-02, 02:04 PM   #2  
telco tech
In my little 14' boat with a 40 hp, I use a 10" (diameter) by 12" prop. Top speed is about 25 with 2 or 3 people. It doesn't seem to have much problem getting on plane.

 
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08-03-02, 09:27 AM   #3  
Irish Ayes
Prop Pitch

The best way to determine the correct pitch is with a tachometer. If let's say your motor is rated at 5500RPM at the top end, then you should have the prop pitched and cuped so at full throtle the tach reads between 5000 and 5500RPM.

 
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