Thread: Engine RPM
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Old 12-08-2014, 08:00 PM   #74
BryanF
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City: Astoria
Vessel Name: Florence A
Vessel Model: 47' Sutton
Join Date: Oct 2014
Posts: 173
Quote:
Originally Posted by kulas44 View Post
Skidgear, I agree with you but we will not win this debate. If we all just had EGT gauges we would see where we get max efficiency, assuming we knew what to look for. We could prop our "semi planing" I love that term, boats to whatever speed we wanted to make and be as economical as possible at that speed. Set the guv at that speed and stop worrying about it. If we wanted our 375 Cats in our GB to hit WOT rated rpm and burn that much fuel, ok, but we are just spinning them more than necessary at 8 mph. If we propped our boat at 8mph to make a decent EGT and set the guvna at that speed we would NEVER be overpropped, just more efficient. You will never get most folks to understand that, and, the word "clueless" is unacceptable .
Yup you say it better than I do. It is an envelope of operation not a simple straight line. There are numerous points inside the envelope.
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