13 Comments
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Ted's avatar

Dragging the electric motor to recharge the battery is not nearly as efficient as just using the alternator on the engine….

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John Hughes's avatar

Probably so, haven’t experimented with it but as I mentioned the real application might be for trailer sailers. Cheers.

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Jerry Culik's avatar

I'm very interested in your results, John. Please keep us informed of how it works. My thinking is that sitting anchored in a decent current might provide at least a trickle of charging current overnight when solar panels are useless. And with the charging efficiency of today's LFP batteries, anything you can glean is net positive.

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John Hughes's avatar

Yes, I’ll update what I find for sure. My next boat will likely be a trailer sailer again (if past performance is any indication of future direction) so I’m hoping it works well. Cruising up a fjord at 6 1/2 knots will hopefully provide a better solution than anchoring in 6 knots of current though. 😳. Cheers.

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Alex Zimmerman's avatar

A friend of a friend says he starts out each spring with a list of 25 projects to be done and goes sailing when the list is pared down to 100 remaining . . .

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John Hughes's avatar

Yes Sir! A great saying and such a healthy way to approach the problem!

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Jay Knight's avatar

Our Torqeedo sail drive regeneration feature is more of a sale feature than a sail feature. Disappointed with regeneration performance, I suspect the towed outboard will be similar. The Yanmar alternator with a dc to dc charger may prove more reliable.

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AJBTC's avatar

Thanks for the input, Jay, I've wondered whether that feature is actually useful (by which I mean is the charging worth the drag while sailing).

Though, in this case, it would be worth it to me for the double-takes he'll get from people wondering whether the small electric motor is chugging that 25 foot boat along nicely, and also why it sounds so loud :)

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Jay Knight's avatar

We have the Torqeedo pod drive with the folding propeller, so it’s in the water all the time. Just have to give it a bit of “throttle “ to open the blades then the little “regeneration “ light comes on. That’s the only thing I have noticed from regeneration on our system. At 6.5 kts we are well into the range that it regenerates. I am still impressed by how positive the response is with this drive system. With a folding propeller on a diesel drive system there is a brief (well it depends on how fast you approach the pier as to how brief) lag before it has any noticeable effect, the electric is practically instantaneous. Off topic…..

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John Hughes's avatar

Thanks. Nice to have options. Cheers.

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Angela Treat Lyon's avatar

I'm excited for you! If I wasn't so crickety I'd want to steal aboard and go with. Have a fab trip - got my fingers crossed for you. Looking forward to pix!

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Rob Kunzig 57's avatar

John, best wishes and looking forward to your article and photos from the Journey/Adventure!!

Can you share any interior photos?

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John Hughes's avatar

Rob,

I couldn't figure out how to attach any to this? Sorry.

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