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| Actually, I have a couple questions. Just purchased a 19 1/2' Starcraft boat with 150 Merc. The prop that came with it is a 24 degree pitch Aluminum prop, and I am having trouble with it cavitating while playing with trim to optimize performance. Once it starts to cavitate, I have to back well off of throttle or quickly tilt down considerably to stop it. RPM's at full throttle without cavitating are 5100, and speed is not what it should be.
I have two other props for an older Merc 150, both 20 degree props. First, would props for a 1984 and 2000 Merc be interchangeable, and if so would a 20 pitch be better for speed and less cavitation, or worse? How does pitch effect performance? I have one stainless "Hooter" prop and one aluminum prop that, assuming they are interchangeable, could be used. I have never used anything but stainless props much, but I know stainless should give me more top end.
Can anyone shed some light on this dillema for me?
Thanks,
John
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Member
Posts: 874
Location: Neenah, WI | 5100 RPMs is a pretty low number. I would think you should have a 19 or 21 degree pitch. Don't know if those props are interchangable. I would ask a dealer these questions, some will recomend and even loan props to try out until you get the right one. | |
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Member
Posts: 363
Location: Kaukauna WI | If is a Merc I would call 920 924 5000 ask for customer service or tech support the research department at Mercury has tons of information and can best assist you here
Michael Dutton
920 766 7372 | |
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