At 5,900 rpm at wot...I would stay with same size and pitch prop.
16.5ft Alumacraft Prowler with a 2017 Mercury 50hp. Boat ran 35mph wide open when I first got it but since adding another battery for the Ultrex, Spyder Lok rod holders and transport rack it now maxes out at 31.6 to 32.0. I'm not trying to win any races but it feels really lazy. Current prop is a 11.4 12P 3 blade and max RPM is 5900. If I went to a 11P would the RPM be too high and would it even help the top end MPH? Current prop has a little damage and I feel some vibration just above idle so I want to replace it no matter what. Any suggestions are appreciated.
Thanks..
Philippians 4:13 "I can do all things through Christ which strengtheneth me"
Wear that PFD, the life you save might be your own!!
At 5,900 rpm at wot...I would stay with same size and pitch prop.
I have spent most my life fishing........the rest I wasted.
PROUD MEMBER OF TEAM GEEZER
PICO Lures Field Rep
need2befishin LIKED above post
You are probably just sitting too low in the water, switching to a 4 blade will give you more stern lift.
Where is your cavitation plate in relation to the bottom of the boat? Like G said, 5900 is pretty close to right, dropping down a pitch is going to likely put you all over the rev limiter, and reduce your speed even more. You could go up a pitch and possibly gain a little speed, but your hole shot will suffer.
need2befishin LIKED above post
Philippians 4:13 "I can do all things through Christ which strengtheneth me"
Wear that PFD, the life you save might be your own!!
Fair Winds and Following Seas
Bill H. PTC USN Ret
Chesapeake, Va
"G", need2befishin LIKED above post
I have spent most my life fishing........the rest I wasted.
PROUD MEMBER OF TEAM GEEZER
PICO Lures Field Rep
need2befishin LIKED above post
Well, the motor is mounted as low as it can go. I have several holes I can use to move it up on the transom. Looks like all the control cables and wires have plenty of slack to support a move upward. Shouldn't be that hard to move it. Any idea what this engine would weigh?
Thanks again for the info guys..
Philippians 4:13 "I can do all things through Christ which strengtheneth me"
Wear that PFD, the life you save might be your own!!
320lb plus oil and prop. Alumacrafts like the motor high, id go 2nd from the top.
need2befishin LIKED above post