T&T: Ask the question a different way. was: Running higher HP

[John Blackburn]

On the other side, those of us with reasonable HP rated engines for 
their boats ( A TRAWLER!)  :-)  who aren't using them in a manner for 
which they were built, and I'm in that category and mean this in the 
most brotherly and kidding way possible:

Say I'm running in the Chesapeake Bay, 44' DeFever with twin 135 
Perkins.  I'm going from Herring Bay to St. Michael's to try and tie up 
at the Maritime Museum, it's first come first served so I would like to 
get there to increase my chances to get a spot.   I can run at somewhere 
around 1800 which is what I understand is the most efficient RPM for 
this engine, could be lower or higher because with my analog gages the 
needle is at least 100 rpm wide  :-), but the fuel use difference of 
running at 2000 over four hours to gain 20 minutes, is maybe $1.50, or 
maybe $4.00, who cares, given my current use patterns ....  which is not 
enough, thank you very much!!!.  And besides, the tanks on this puppy 
are so big that I'm looking for excuses to turn the tanks over.

How's that for a goal, turn your tanks over! and an incentive to add a 
polishing system, which I will over this winter.  However, after I 
retire and the Admiral and I take off, my whole operational mode/mind 
set will change because of the education I have received from this list.

Thank You All Very Much!

John Blackburn
44 DeFever "Yak Rack"
Deale MD

bob england wrote:

>Exactly my point ! If an engine, say 555 HP, is "abused" by running it at 100
>HP, it may only last 15,000 hours, all things be equal, as opposed to 20,000
>hours at rated output. I would like to hear from ANYONE that has ran any
>diesel engine for 15,000 hours, and how they did it.
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