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  1. #1

    Unhappy Improving 20 HP OB performance

    I have a bass tracker pro crappie 175 with a 2015 20 HP mercury motor. The boat is used mainly in restricted HP lakes. The motor has a 10P alum. prop. Recommended rpm for this motor is 5400 to 6100 rpm. I am getting 5000 to 5100 rpm. Top speed is 14 mph based on GPS. The trim is set at the next to last hole. I also installed a Hydro foil SE200 on the motor which seems to help some to get stern up. How can I improve performance and speed to go faster and also get to the recommended factory rpm. Here is a video of my boat. Seems like the bow is too high. Located on YouTube .https://youtu.be/a56RDCQcfu4 Would a 4 blade prop help? What pitch?

  2. #2
    Join Date
    Sep 2010
    Location
    ontario
    Posts
    13,662

    Default Re: Improving 20 HP OB performance

    Is this a 17' boat with 20 hp on it ?

  3. #3

    Default Re: Improving 20 HP OB performance

    Quote Originally Posted by racerone View Post
    Is this a 17' boat with 20 hp on it ?
    Yes. It is actually 17' 5".

  4. #4
    Join Date
    Sep 2010
    Location
    ontario
    Posts
    13,662

    Default Re: Improving 20 HP OB performance

    And what top speed are you hoping for ?

  5. #5

    Default Re: Improving 20 HP OB performance

    Quote Originally Posted by racerone View Post
    And what top speed are you hoping for ?
    Looking to try to get at least 15 mph with two people.

  6. #6
    Join Date
    May 2007
    Location
    Inverary, Ontario, Canada - The Great White North Eh!
    Posts
    9,113

    Default Re: Improving 20 HP OB performance

    You are loading up your motor - not badly, but you should drop minimally to an 8 pitch.

    That will do nothing for your speed but at least the motor won't be bogging.

    If you are looking for more speed you are going to have to forget the "restricted" lakes and strap at least a 50 horse on the back.

    Even moving up to a 30 horse would give you maybe 16 mph at best.

    There is nothing you can strap on, bolt on, or pour into the tank to get much more out of your current rig.
    Graham

    A "professional" is someone who gets paid for their work - it doesn't necessarily mean they are good at it :)

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