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  1. #11
    Join Date
    Nov 2009
    Location
    Nebraska
    Posts
    742

    Default

    Quote Originally Posted by Sickpainter18 View Post
    OJ 945 15x13
    That’s what I have and run about that too while surfing.


    Sent from my iPhone using Tapatalk
    2016 Mojo
    2010 Moomba LSV-Sold

  2. #12
    Join Date
    Aug 2017
    Posts
    947

    Default

    What boat/ballast are you guys running?
    2019 Supra SL450

  3. #13

    Default

    I have a 2018 craz with stock 3000 lbs ballast usually 5-6 adults 1-4 kids

  4. #14
    Join Date
    Nov 2009
    Location
    Nebraska
    Posts
    742

    Default

    Mojo. About 5000lbs of ballast


    Sent from my iPhone using Tapatalk
    2016 Mojo
    2010 Moomba LSV-Sold

  5. #15
    Join Date
    Aug 2018
    Posts
    185

    Default

    16 mojo here with a 15x12 and I'm really impressed by it. We run at least 5k ballast and run around 3300 to 3600 rpm. No experience with a 15x13 though.
    2016 Mojo surf edition
    1100lbs rear w/ 475lbs piggyback mid/ center 700lbs/ 500lbs IBS/ 600 lbs lead
    ACME 2315

  6. #16
    Join Date
    Aug 2017
    Posts
    947

    Default

    If you're at 4k, especially with stock ballast, you should at least try out a 15x12.
    2019 Supra SL450

  7. #17
    Join Date
    Nov 2016
    Location
    Knoxville, TN
    Posts
    1,372

    Default

    I am running 4000 pounds plus people in the SA, but I am going the other way. Had the 15x13, but hated running high rpms cruising the river and only doing 27 mph unweighted. I am still looking for that happy medium. So far, the 15x14 is doing well. But the 15x13 didn't lack for hole shot pull.
    2018 Supra SA400 aka The Ron Burgandy
    2011 Sea-Doo Wake 155
    2015 Mojo Surf, sold...2013 Axis A22 Recon Edition, sold...2010 Axis A22, sold...2007 Maxum 1800sr3, sold

  8. #18
    Join Date
    May 2018
    Posts
    4,920

    Default

    Quote Originally Posted by KnoxMojo View Post
    I am running 4000 pounds plus people in the SA, but I am going the other way. Had the 15x13, but hated running high rpms cruising the river and only doing 27 mph unweighted. I am still looking for that happy medium. So far, the 15x14 is doing well. But the 15x13 didn't lack for hole shot pull.
    SA 400 stock ballast plus people and running a 15x12.5

    Pulls great and cruises at 38 without ballast at 4800rpm, going above 5000rpm and it doesn’t go any faster and might cavitate.

    Does everything I need it to do at wake and surf with ballast and cruise without ballast




    Sent from my iPhone using Tapatalk
    2021 Supra SA 400
    2018 Supra SA 400 (SOLD)
    Michigan

  9. #19
    Join Date
    Nov 2016
    Location
    Knoxville, TN
    Posts
    1,372

    Default

    Guess I am used to the Mojo where I was using the 1235 (14.5x14.25) and could surf at 3500 rpms with over 4k ballast, wakeboard with 3500 pounds around 3700 rpms and cruise at 32 empty at around 3500 as well. That thing seemed to sip fuel for longer days on the water as compared to the SA. But I guess that why it has a bigger tank. Lol. I don't like my boat to be at a steady state over 4000 rpms.
    2018 Supra SA400 aka The Ron Burgandy
    2011 Sea-Doo Wake 155
    2015 Mojo Surf, sold...2013 Axis A22 Recon Edition, sold...2010 Axis A22, sold...2007 Maxum 1800sr3, sold

  10. #20
    Join Date
    Nov 2009
    Location
    Nebraska
    Posts
    742

    Default

    How will the RPMs be when wakeboarding at 23 mph with the 15x12.


    Sent from my iPhone using Tapatalk
    2016 Mojo
    2010 Moomba LSV-Sold

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