That’s what I have and run about that too while surfing.
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What boat/ballast are you guys running?
I have a 2018 craz with stock 3000 lbs ballast usually 5-6 adults 1-4 kids
Mojo. About 5000lbs of ballast [emoji2960]
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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.
If you're at 4k, especially with stock ballast, you should at least try out a 15x12.
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
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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.
How will the RPMs be when wakeboarding at 23 mph with the 15x12.
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