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  1. #1
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    Question from out in left field. PROPELLERS

    Iíve propped drag boats and pleasure boats with some success. BUT, my 18 ft. pontoon boat with a 40 HP. outboard is driving me nuts. Blow out, cavitation, call it what you like, the prop breaks lose. I canít corner or trim up at all without the prop breaking loose. Props Iíve tried, 3 and 4 blade. Pitch 10 to 12 in. diameter 10.5 up to 11 in. My next step is to increase the prop diameter as much as possible, 11.75 to 12.5 dia. X 10 P. and see what happens. What do you think? Speed is not important.

  2. #2
    Join Date
    Mar 2008
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    Tourist Trap, Florida
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    Cup is your friend when messing with tooner. Take a wheel to a prop guy and say, 2x cup please.

  3. #3
    Join Date
    Sep 2003
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    charlotte,nc
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    motor too high
    death is certain; life is not


  4. #4
    Join Date
    Feb 2015
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    Ontario
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    Call PropCo in GA, he has some good props for pontoons.

  5. #5
    Join Date
    Jun 2006
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    CHAIN O LAKES, IL
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    Big dia, cup, stainless, 4-blade or a 60 hp bigfoot merc. call it a day.
    we tried setback before and help some but not cure all.... big issue is large dia tubes and light motor.
    motor down on transom? i assume 20" motor? yeah it may never work perfect not much you can do ....everyone sit in back or heavy peeps in back, kids in front. idk.
    rented a tooner in naples was 18' with a 60 merc bigfoot and stainless vengeance 3 blade, was awesome in the back waters, we flew up to ft meyers and back ran perfect....i was impressed. hope this helps.
    Last edited by RIVERRUMMER 70; 01-05-2018 at 12:00 PM.

  6. #6
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    Thanks guys.

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