Yes, I have lots of personal experience using my current
"towed-water-generator" (as well as, years ago, using a prop-shaft-alternator)...
My current unit, since 2007, is a Hamilton Ferris WP-200, and it works great! Use if for long passages, combined with a decent-sized solar array, makes you energy self-sufficient!! (no need to burn diesel
or listen to a genset or wind-gen!!)
Originally Posted by Sevi
Does anyone have any personal experience they can share about hydro generators? I've looked at S&W & Duogen, but it's difficult to do a direct comparison. Are there other brands that I'm missing? Thank you.
There have been many discussions here about these units, please have a look at these threads, where you'll find LOTS of details and info!!!
Towing Generators / Update, Anyone?
Water Generator Concept Thread
Permanent Magnet Generator on Propshaft
The Hamilton Ferris WP-200 works well....figure about 1amp to 1.5amps per knot
of boat speed....about 1 to 1.25amps/knot from 3kts to 5kts....about 1.25 to 1.5amps/knot from 5kts to 7kts....and 1.5amps to 2amps/knot from 7kts to 9kts of boat speed...
And, while those numbers might seem small, that's about 6 to 9amps (at about 5 to 6kts), 24 hours a day, for even a smaller/slower cruising boat on a passage
, rain or shine, as long as your moving, you're making electricity! (that's 150+ amp-hours per day of charging!)
(and as long as boat speed is above 3kts or so, you should not experience any significant drag, nor reduction in boat speed...)
Here's a photo
of mine deployed on an Atlantic crossing
And, another photo
, showing where it's mounted...
Please read the above threads, for all the info you'll ever need...