What size prop should I run on my 17 HPXV with a Yamaha 90 2 stroke?
o I am currently running a YM90PTR3R17P and turn 5500 rpm and 44 mph on the GPS with just me on board, full gas on a calm day, with the motor trimmed out to almost the max and very little tabs. The motor is set as low as possible on the transom. o I have the same prop too. I think I get right at 5500 and speed is 43 to 44 on the GPS. That is with just me in the boat and trimmed out throwing a rooster tail, with enough tabs to keep from porpoising. Motor is in the lowest setting. o BOB L notes: I think we all pretty much use the same prop. The HPX-V requires a bit more work when running. You must sort of prepare for a turn by lowering the engine trim a bit, and pulling off power. After I make the turn, I add power and trim up again. You do not have to play with the trim tabs like some do on the HPX-T. If you just make a turn at full power with the engine trimmed up, then yes the prop will “blow out”, or slip. I am always working my engine trim and trim tabs on this boat to achieve max p
