help me

Discussion in 'Prop Shop' started by tntwill, Jun 3, 2012.

  1. tntwill

    tntwill Hooking Lips is my life

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    Went out today boat ran great new numbers since the tiny tach is working now. wot 4600 rpm 25.3 mph on gps does this sound good and is there anymore i can get out of a different prop btw 35 2 stroke mercury.
     
  2. Brett

    Brett > PRO STAFF <

    How much load were you pushing with the 35?
     

  3. tntwill

    tntwill Hooking Lips is my life

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    you mean weight?
     
  4. tntwill

    tntwill Hooking Lips is my life

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    i knew you would reply thank you
     
  5. Brett

    Brett > PRO STAFF <

    Load = total weight of engine, gear, fuel, passengers and hull.

    There are calculators on line that allow you to input hp, hull type and total load
    that will spit out what you should be able to get for top speed.

    http://hhscott.com/evinrude/docs/BSLAC.htm

    Knowing what you should expect from a 35 pushing your specific load
    will tell if there is a problem with the engine, or if you need a different prop to up rpms.
     
  6. tntwill

    tntwill Hooking Lips is my life

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    well that says 26 mph so i guess i cannot ask for anything more thanks again brett it is running good
     
  7. Brett

    Brett > PRO STAFF <

    With a lighter load I'd guess that the rpm's would go up to the 5000 plus side.
    If you always run heavy, maybe you need to drop pitch a couple-three inches.
    That'll increase rpms by about 400-500 and improve hole shot.
     
  8. Gramps

    Gramps Living &amp; Dying in 3/4 Time

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    It sounds like you need to go down a few inches in pitch, if memory serves your motor's WOT operating range is 5400 - 6000. I'd drop a few inches in pitch; better holeshot and possibly higher topend.
     
  9. tntwill

    tntwill Hooking Lips is my life

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    i think my pitch is 13 so go down? for better hole shot that would be nice