Quote:
Originally Posted by Soo-Valley
IMHO, what sounds off is you are only getting 7KN @ 2000 RPM with a more efficient 4 blade.
I can only compare to my GB and defer to others with same boat as yours.
With one engine down I was getting 7 knots @ 1600 with 2500 max under load.
Overpropped usually lowers the RPM to attain same speed.
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I totally agree! The FIRST thing I thought when I read 2000 to get 7kts is that something isn't right. That's about 110hp (according to the HP graph) to move a 36' boat at *almost* hull speed??!! It doesn't make sense.
As a total guess, I would first check tach calibration, then check the transmission ratio, then check the prop pitch. Its possible this boat has an *underpitched* prop or had a transmission with a higher gear ratio swapped in AND the throttle stop (located INSIDE the throttle control on a FL135) does not allow actual full throttle.
Definitely need some investigation - it doesn't add up.
Edit - another correction - WOT throttle on a FL135 is 2600.
Ken