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Hand Crank Generator

Hand Crank Generator

Hand Crank Generator

(OP)
I want to hand generate 40w for 30 seconds is this possible with a 4"dia x 1" housing

I built a neodymium motor 20 poles the  windings were done by a transformer house but I was unable to remagnatize the neo's

I bought a brushless motor turns out I had to turn it 60:1 not an easy task.

Not my strong suit but I offered to help with this project..

Regards

RE: Hand Crank Generator

I don't know.  Looking around the web seems to me that your space is about the size of 20W.

This is a 25W generator you can scale to the bananas.


Those generators guys sit at and crank with both hands are only about 30W I think.

RE: Hand Crank Generator

57 in-lb at 60 rpm is right at 40 watts with no loss.  I would think the system would have at least 50% efficiency so it seems like you should be able to do it.

With a 6" radius handle turning one rev per second you would required about 20lb of force with a 50% efficient system.  

If this is a home project you might be able to use an old drill motor gear head for a speed increaser.  

Barry1961

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