Hi Erik,
I've seen some regen on Current Sunhsine which has a Cruise 4. Its
not recommended by Torqeedo, so keep that in mind if you want
experiment with this. If you do it you may lose warranty.
If I set the throttle at around 50 watts or some other low number,
then when the boat is sailing the power requirement quickly drops back
to zero, and then from around 5 or 6 knots I begin to see 1 or 2 amps
coming in. I've seen as high as 18 amps when she was doing about 13
knots. And it has been regenerating when I've had her at 25 knots and
the motor was screaming but I did not get a chance to see what the
amps was. That was accidental :) But it didn't blow up the motor, so
I think they could be robust enough for more genatle use.
This regen is at 48 volts so at 18 amps that was a respectable 900
watts coming in. But even at 2 amps, thats 100 watts and is enough to
easily meet my house load requirements and a bit more besides.
Cheers
Chris
Quoting Eric <ewdysar@yahoo.com>:
> Taking that idea one step further, what does anyone know about regen
> from a Torqeedo? I vaguely remember somebody saying something in
> this group about this, but I can't remember exactly what was
> discussed.
>
> Torqeedo makes a big deal about their motors being more efficient
> because of the rare-earth permanent magnets, so they should also be
> a more efficient generator (I think). And they come in 48V. Even
> the most expensive Torqeedo is significantly less than the
> Wattandsea offering.
>
> Fair winds,
> Eric
> Marina del Rey, CA
>
> --- In electricboats@yahoogroups.com, Arby bernt <arbybernt@...> wrote:
>>
>> Try a trolling motor...Watts to lose?Use a 24v unit, take the leads
>> straight from the brushes. Connect to the battery using a diode.
>> The voltage will increase as the prop spins faster. If there is
>> excess voltage, it will be clamped by the battery and can be
>> measured as current. When the prop slows, the diode will keep the
>> juice in the boat. Â Turn the prop into the water current, perhaps,
>> to get cleaner flow over the prop. Swap the prop for two airplane
>> props staggered on the same shaft to increase the swept area.Â
>> Peut-être que vous pouvez vendre à la française!
>> Bien-être,Arby
>>
>> --- On Tue, 4/19/11, acsarfkram <acsarfkram@...> wrote:
>>
>> From: acsarfkram <acsarfkram@...>
>> Subject: [Electric Boats] Re: hydro generator
>> To: electricboats@yahoogroups.com
>> Date: Tuesday, April 19, 2011, 11:33 AM
>>
>> For some reason I didn't ask the price, I did find a price of
>> $10000 online so $7200 sounds right.
>>
>> I'm thinking more and more that regen might be best achieved this way.
>>
>> How hard could it be to design/build one? Could you use a trolling motor?
>>
>> Arby?? :-)
>>
>> Mark
>> Santa Cruz
>>
>> --- In electricboats@yahoogroups.com, Pitt Bolinate <boombolinate@> wrote:
>>
>> >
>>
>> > I thought this generator looked great, I asked the price. Drum
>> roll please....$7200 it's french, that's a direct quote from the
>> sales guy.......
>>
>> >
>>
>> > Sent from my iPad
>>
>
>
>
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