You are certainly in the ballpark HP-wise. A 6ish HP motor developing that power at about the same as the Volvo's top rpm (3600??) could be connected directly to the input shaft of the sail drive.
The MARS brushless motor is popular and inexpensive but only has a top speed of about 2400 rpm at 48 volts. A brush type motor with a linear volt/rpm ratio might be easier to match up.
Definitely a do-able project if you can get an adaptor plate and maybe a little jack shaft to mate the motor to the leg.
Denny Wolfe
www.wolfEboats.
----- Original Message -----
From: robmackenzieuk
To: electricboats@
Sent: Sunday, May 24, 2009 7:39 AM
Subject: [Electric Boats] DIY fitting electric motor onto existing 110s volvo saildrive? anyone done 1?
I am looking at changing my Volvo Penta single cylinder 5hp diesel inboard engine, currently coupled to a volvo 110s saildrive, i want to know if its possible to keep the saildrive and couple an electric motor direct onto the saildrive? we have an Oyster 26' (8m) grp yacht approx 3.5 ton, has anyone done anything similiar? would love to hear from you if you have.
Obvious issues i can think of would be gearing, hopefully keeping existing 14dia by 7" pitch folding prop, and coupling to the saildrive.
Hope to hear from you :-)
[Non-text portions of this message have been removed]
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