Monday, September 19, 2011

[Electric Boats] please take a stab at sizing a motor....

 

Alright, here is some info about a particular boat and from that I would like to determine what e-motor setup that would produce the same cruise speed.

Speed:  6 knots via the following,
    Perkins 4-236 running at 1500 rpm turning a 24x9 prop
    2.1 reduction drive
    16 ton vessel

the thing uses about 1 gal/hr diesel doing this

the engine is rated at 65hp continuous but of course it is not running at that output level

i've been searching around for some 4-236 output curves but not been able to find any to this point

anyone care to take some guesses?


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