Quick Gear Ratio Question 2001 90HP Looper

T

trimmers

Petty Officer 3rd Class
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Joined
Mar 1, 2010
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88
Trying to do the math with the formula for prop pitch, but I don't have the gear ratio. Does someone have a quick reference chart? Its a 2001 90 HP 60* V-4 Looper. Right now I am guessing a 2:1 with an 11.1% Slip but I want to make sure since I need a new prop and wanna make sure I am right by just sticking with the 14 x 13 size thats on it. Thank You
 
T

trimmers

Petty Officer 3rd Class
Thread starter
Joined
Mar 1, 2010
Messages
88
Re: Quick Gear Ratio Question 2001 90HP Looper

Shoot, one more thing. What is the RPM range I wanna be cruising around at. I had her out yesterday cruising around 4200-4400 rpm at about 23mph for hours do to alot of wind and chop, but was concerned ofcourse about carbon and coaking. Just wondering
 
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