Re: [Electric Boats] Choice of Motors

 

A half horsepower, 400 watts, 33 amps on a 12v motor, 17 amps on a 24v motor will push a 14' boat shaped like a wide canoe 4 -5 mph.

 

The batteries are usually the constraint.  How long and how fast do expect to go between recharges?

 

You can buy a trolling motor for less than the parts cost to set up a do-it-yourself system.  Build a fairing for the round motor shaft and use an RC model airplane prop and you will be surprised how well that will work.

 

Denny

 

----- Original Message -----

From: JamesA

To: electricboats@yahoogroups.com

Sent: Thursday, August 19, 2010 3:51 AM

Subject: [Electric Boats] Choice of Motors

 

I am sure that these questions have been asked before, so please forgive me asking again.

I am considering building a small electric boat, no longer than 14', for use on the non-tidal parts of the Thames. I have two 12v motors from old self-propelled cylinder mowers, Atco, I think. Are these likely to be powerful enough to drive the boat if linked to an small outboard leg? The other alternatives I have considered are the scooter motors that are readiliy available on e-bay

http://cgi.ebay.co.uk/Electric-24-volt-120-wt-motor-electric-E-Scooters-/390226951728?pt=UK_Sporting_Goods_Scooters_LE

or

http://cgi.ebay.co.uk/350W-Electric-Motor-Electric-Bike-Scooter-2550RPM-24V-/170523906850?pt=UK_CartsParts_Vehicles_ATVQuad_Trike_Parts_Accessories_SM

Any suggestions would be appreciated.

Regards,

James.

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