okay, here is some additional info.... see if i am doing this right
the 4-236 is rated at 2250 rpm or 65 hp continuous
therefore at 1500 it would be producing about 43hp right?
if so then it takes about 43 hp to move the boat at 6 knots?
From: Michael Mccomb <mccomb.michael@yahoo.com>
To: "electricboats@yahoogroups.com" <electricboats@yahoogroups.com>
Sent: Monday, September 19, 2011 8:48 PM
Subject: [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?
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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