pitch for 25hp 2-stroke Classic

Discussion in 'Prop Shop' started by Salty_South, Nov 15, 2009.

  1. Salty_South

    Salty_South Well-Known Member

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    running a 25hp 2stroke on my Gheenoe Classic. Stock prop is just o.k. Any pitch recommendations?
     
  2. noeettica

    noeettica Well-Known Member

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    what make motor ? Merc 10 x 13
     

  3. Salty_South

    Salty_South Well-Known Member

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    yamaha 2stroke 25hp.
     
  4. Flyline

    Flyline Won "Do More With Less" Award!

    What are u trying to improve with your motor?

    There's alots of propeller selections for the yami 25.

    I had a cheenoe classic with 25hp 2-stroke yamaha. Tops out 31.5 mph with stock propelller at 6250 RPM.

    So I switched to 10 x 13" pitch stainless steel propeller to lower my RPM and gain bit more speed.

    When I got a electric jackplate then I switched to 10 x 11" pitch 4 blade stainless steel propeller with heavy cupped to run very shallow. Tops out 29 mph with 4 blade.

    For best overall performance is 10 x 12" pitch stainless steel 3 blade propeller.

    I don't see nothing is wrong with stock propeller like 11 7/8" pitch only comes with short shaft.

    If u have a long shaft then you have a 9" stock propeller come with it.

    Let us know.
     
  5. Salty_South

    Salty_South Well-Known Member

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    Whitesnooky, I have the short shaft Yamaha. I am new to the 2 stroke motor so I cannot tell if I am reving too high. Did you notice you were reving too high with yours? Did the 10*13 prop increase your speed? Thanks for your input!
     
  6. Brett

    Brett > PRO STAFF <

    Do you have a tachometer installed?
     
  7. Salty_South

    Salty_South Well-Known Member

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    no, not yet. I may need to do that though.
     
  8. mark_gardner

    mark_gardner I Love microskiff.com!

    to really be able to dial it in you need a tacky-o-meter :D ;D
     
  9. Flyline

    Flyline Won &quot;Do More With Less&quot; Award!

    u need to do that first. I had one for my yami 25hp with a classic.

    the first thing I seen my motor turning 6250 rpm in stock propeller. So I switched to 13" pitch and it was 5800 RPM I think.

    www.tinytach.com