Human Powered generator
The heart of most of these is something like this:
The Generator:
The most effective generator is a 24 volt DC magnet generator, rated for 1800 rpm with an output of 1/3 horsepower. The rpm’s plus the voltage output is meant to make the generator rotate at 900 rpm’s, producing a 12 volt output. You will need solid copper, 10 gauge wire with a resistance of R=1 ohm’s per thousand feet.
Other DIY generators:
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Staton-Inc ebike parts supplier.
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Richard Guy Briggs
Thu Nov 3 12:13:28 EDT 2011