Prop guidance please

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  • Prop guidance please

    (Sorry for repost - I think I posted int he wrong sub-forum.)

    Did a few tests runs today. Just me on the boat and seas were fairly calm. I ran with about 90 gallons of fuel instead of 150 to 180 I usually carry. I normally fish with three total people including myself. I didn’t have any of our fishing gear or 50 lbs ice on board. 50 gallon bait tank was full. Sorry I fell that’s a relevant information… Just trying to get more info than less.

    1999 World Cat 266SF (heavy cat)
    Twin 2013 Evinrude 200 HO’s with M2 gear case 1.82:1 ratio
    Optimum rpm is 5700
    i ran 49 mph at 6100 RPM with the light load. I’d guess i was short about 1200-1500 lbs on today’s test.
    Trim was way out at 65%

    I never want to run at those speeds again!!! Lol. My goal is to prop the best fuel economy while cruising around 30- 32 mph. I never really run faster than that. With my current Mercury Mirage plus props 15 1/2 x 17 I am usually at 1.5 miles per gallon. Often the seas only allow me to run about 22 to 24 mph and my mpg drops down to about 1 mpg.

    Thoughts? Room for improvement? Thanks in advance!!!
    Last edited by Ediggity; 09-22-2020, 05:02 PM.

  • #2
    Any thoughts?


    • #3
      Sorry for the delay, I was in Pensacola for a little while cleaning up Hurricane Debris.

      Your numbers don't sound bad, your hitting the speed we'd expect with that HP.
      You are at 9% slip, which is very good.
      Sounds like they are doing really well honestly.

      Ken Reeves
      [email protected]


      • #4
        Oh man. Hope it wasn’t too bad. Ok thanks for the advice! Would a Rebel 17 pitch basically be identical to where I’m at now? I keep reading that the Rebel props do really well on the ETECs.


        • #5
          Yeah, the Rebel would be very similar to what you have now. Similar style props, and same size.

          Ken Reeves
          [email protected]


          • #6
            Got it... thanks again!