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#1
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We had a similar problem on a boat I've got being over horsed. Tried twice having props repitched (cause we reached the normal available prop max) and finally just ran about 3/4 throttle to keep the rpm's within the engines suggested range.
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'75 Cuddy with '00 Johnson Ocean Pro 150 horse Benny |
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#2
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check your tach to begin with, then compare your prop to a new one, its probably worn out more than you realize, see if you can find a prop shop that will let you play around with different props. Their used to be Murphey's in Norfolk, I don't know if they are still around, but at one time, they were considered the best on the East coast. If you had posted this a few days earlier, I could have come by and took a test ride
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#3
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Thanks guys. The motor is a 1995 50HP non-commercial with the standard L/U (Don't know the ratio off the top of my head, can check the book when I get home). Current prop is a 3 blade, 11.75x17 aluminum. I am thinking that I don't really have too many options anyway as I can only find 12x17 and 11.75x17 props, everything else is too large a diameter. Spare, I'll see what I can find locally. I hope I can find a good shop because I may just pick up a 12x17 and see where that gets me and if needed add some pitch. The tach is brand new so I would think it's pretty accurate and based on the feel of the boat I would agree I need to add some bite. The prop slips when I mash the throttle and takes a second to bite, so I clearly have an issue.
I would have hooked you up for a ride if she was ready. Just finished rebuilding the carbs yesterday and splashed her ASAP to see how it ran. If you're in town again shoot me a pm! -Svence
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1984 V-20 Steplift 1998 Johnson 175 |
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