08-08-2008, 12:26 PM
I just bought a Ranger 620 with a yammy f250 on it and I'm having trouble with the boat porpoising, along with weak hole shot. I curently am running a 23p. vmax prop. Would a 21p. lazer help? The issue with porpoising is with the trim almost all the way down.There are a ton of similar set ups out there, and I would love to hear how other guys are set up as far as what props and pitch your using. THANKS COONDOG
08-08-2008, 12:47 PM
That's the wrong prop for that boat. Is the prop Ranger tested, they wanted speed, that's what you'll get with the 23. I use a Yamaha Pro Series 21M, this is the prop that works for me.
Just a thought, but motor height has a lot to do with porposing. I also have excessive porposing with my Triton 215X. I can minimize it by not keeping my motor too high.
08-12-2008, 02:32 PM
I run this setup and am using a Yamaha 21 Saltwater seriesII and am very happy and have no porpoising issues. 56MPH at 6000rpms. Outboard is mounting bottom hole or highest setting.