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Old 15-02-2019, 09:52   #1
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Electric motor

Hi I’ve got a 39’ which has no engine. So I tow with dingy
Was thinking as a stopgap connect a 110v 2hp motor and run from my Honda EU2000 I still have the gearbox so wondered if connect shaft to shaft and speed controls would work Any ideas welcome
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Old 15-02-2019, 19:22   #2
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Re: Electric motor

Killyan, Might work. Mounting motor and connecting the two shafts would be a challenge but doable. Is the motor reversible? Could use the Honda generator to control speed if it has variable output. I have a 40 ft boat and when the transmission collapsed I mounted a 5hp Honda outboard on my swim ladder as a stopgap propulsion system. Could make 3.5 knots in calmer waters and travelled 100nm with it. Worked well for me. DavesIM
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Old 16-02-2019, 05:17   #3
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Re: Electric motor

Thanks DaveSIM
I was thinking to use gearbox to have forward and reverse possibly weld a belt drive to clutch plate I do have a reversible motor but it's 1/2hp so way to small
I had thought of outboard on back, but was told it would be hard to manoeuvre as rudder was in front Did you swing outboard left to right to turn or the boat rudder Thanks again for your help
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Old 16-02-2019, 05:52   #4
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Electric motor

As a reference my Watermaker with a 1HP motor draws 9.3 amps.
The Honda 2000 is rated at 13.3 continuously.
I suspect that the 1 hp motor I have isn’t heavily loaded and of it were that it would of course draw more than 9.3 amps, so I suspect a 1 HP motor is about all a Honda 2000 can power.’

An outboard would likely work, much much better
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Old 16-02-2019, 06:50   #5
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Re: Electric motor

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Originally Posted by a64pilot View Post
As a reference my Watermaker with a 1HP motor draws 9.3 amps.
The Honda 2000 is rated at 13.3 continuously.
I suspect that the 1 hp motor I have isn’t heavily loaded and of it were that it would of course draw more than 9.3 amps, so I suspect a 1 HP motor is about all a Honda 2000 can power.’

An outboard would likely work, much much better
9.3a @110v is 1023w which is about 1-1/3hp

13.3a @110v is 1463w which is basically 2hp.

The Honda probably has some surge capability up over 2hp.

What kind of boat Killyan?
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Old 16-02-2019, 07:51   #6
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Re: Electric motor

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Originally Posted by Killyian View Post
Thanks DaveSIM
I was thinking to use gearbox to have forward and reverse possibly weld a belt drive to clutch plate I do have a reversible motor but it's 1/2hp so way to small
I had thought of outboard on back, but was told it would be hard to manoeuvre as rudder was in front Did you swing outboard left to right to turn or the boat rudder Thanks again for your help
Killyian We could do both. Steer the outboard which we used in the harbor and steer the boat while travelling. Both worked well with the outboard under higher power. Just in harbor we had to allow a bigger turn radius. Have had to use it several times as I have had plate failures between the gearbox and engine. Fatigue failures. DavesIM
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