Monday, March 28, 2011

[Electric Boats] Quick Question re power outputs vs RPM/time

 


Hi,
Just another of my quick questions to try to get a handle on all of
this.

Taking it that many people use less than full power in order to increase
range, and assuming the batteries were regular lead acid wet batteries,
are the two scenarios below going to give ROUGHLY the same running time
at the same power/rpm?
1 - A 10 kw motor set to run at a 5 kw battery draw.
2 - A 5 kw motor running wide open.

What I am trying to find out, is there some kind of hidden advantage to
have the larger motor running under less stress, or are the performances
proportional? I am assuming no appreciable heat buildup.

Thanks,
John

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