12thManFalseStart
Seaman
- Joined
- Jul 23, 2013
- Messages
- 58
Just bought a boat last week and had it out twice now with a few quirks. 1980 17 foot fiberform waikiki. There are a couple of dings on the prop I have now, which is a Michigan 13 1/4 with 17 pitch. I'm only running 34 tops at 5,300 rpm. Used to have a simular size glastron 78 with a 135 evinrude that did 45 easy. Only 20 more horses gives it 10mph more, and probably a heavier boat?
I have noticed I can't trim the motor up while running. It doesn't leak down, but I can't trim up at speed. If I stop, and put it in gear, it'll hold until I give it gas, and it will drop down with a thud.
Should I try a 13 1/4 19 pitch? Motor manual says it makes peak hp at 5,000, even though it's range is 4,500-5,500 in the manual. Thanks guys.
P.S. Gear ratio in manual says 13:26. I'm looking for the highest speed prop I can get since I don't really tube/ski with it all that much.
I have noticed I can't trim the motor up while running. It doesn't leak down, but I can't trim up at speed. If I stop, and put it in gear, it'll hold until I give it gas, and it will drop down with a thud.
Should I try a 13 1/4 19 pitch? Motor manual says it makes peak hp at 5,000, even though it's range is 4,500-5,500 in the manual. Thanks guys.
P.S. Gear ratio in manual says 13:26. I'm looking for the highest speed prop I can get since I don't really tube/ski with it all that much.
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