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Old 03-12-2011, 05:05 AM   #37
jleonard
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Join Date: Jun 2008
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RE: Can large diesel engines be run at minimum RPM continually?

"Who gives a squat about other boats? This is w a previous boat**** ...right"

Hey I'm in agreement with you , I was only making a point. That was with my ex, a 34 Mainship model I, 1978 vintage. Performance wise those boats were all very close dependant of course on the particular engine model that they came from the factory with.

But here's something...I was plannning an eventual *repower and using info from a boating pal who had the same boat and had repowered. So little by little I did the upgrades so when I finally did repower the boat would be ready.
Just by fairing the back edge of the keel ahead of the prop I gained 250 engine rpm.
The Mainships had a flat end to the keel and fairing it (by adding a bullet shaped piece) that stopped the water from "eddying" and gave clean water to the prop.
I was then able to add an inch of pitch plus a cup to the wheel.
It was a fun project with positive results
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