Hello Fred,
I would like to see that powerpoint slide show. Any info on where you bought the motor and what brand it is?
Thanks in advance,
Roland
To: electricboats@
From: fred.rosse@wgint.
Date: Fri, 3 Jul 2009 06:27:03 +0000
Subject: [Electric Boats] Re: new member and, of course, questions
--- In electricboats@
>
> Hello Group,
>
> My name is Roland Kruijer and I'm from The Netherlands.
>
> I'm just entering the electric community as I bought an electric boat just a couple of weeks ago. http://www.electrab
>
> Maybe some of you know this boat or have one. I'm having a little problem with the speed of the boat. I allready changed the pulleys but as a result, the motor becomes hot, so I'm figuring that is not the way to do it. It now has a 300 Watt, 24 V electric motor which would be sufficient in a pond, but I live by a slow streaming river, there for the motor is too weak. Oh, and the batteries are 2 x 12 V 200 amp in series.
> Now, I'm searching for a replacement (bigger) motor to use. Also I read there's need for a controller?? and I'm also looking for a throttle of some kind, because the boat now only has on/off switch.
>
> I saw on the net that there are lots of electric scootermotors for sale, can these be used?
> What kind of motor should I use? The boat doesn't have to be a speedboat.
> Is it possible to use an ordinary electric motor, but instead of the 300w one with 600 or 900 watt?
> I'm a bit concerned about the power of the batteries going straight to the motor. The orriginal set-up got the motor handwarm, but since I changed the pulley, its becomming, well, hotter.
>
>
> As I said, I'm just entering this electric world and do not have experience in electronics. I'm more an automotive guy, so any advice would be great!
>
>
> Thanks in advance,
> Roland Kruijer
>
I have put together a 3/4 horsepower (560 watts shaft output)inboard electric boat, built into a 14 foot (3.66 M) fiberglass sailboat hull. I bought the motor on e-bay for $50US, 24 volt, continuous duty rating. A PM motor is the way to go, this allows simple reversal. It moves the boat at 4-5 MPH for several hours with two 12 volt marine deep cycle batteries. Usually we carry four adult persons.
You do not need a controller, my boat has only three switches, a master on/off switch, plus two DPDT (double pole, double throw) switches. One DPDT switch controlls forward/reverse, the other DPDT switch provides 12 volts (low speed) or 24 volts (high speed). That has proven very satisfactory for all the cruising we do.
If you would like, I will e-mail a POWERPOINT slide show of the boatbuilding, wiring, etc.
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