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how do i make a gear box with a 6to1 ratio so i can build a wind up power supply for emergency? Answered

I want to build a generator that doesn't use gas but will turn fast enough to turn an alternator with a gear box system once i have the gear box built which will meet my requirements I will use three battery's two alternators. having this done ill use an invert er.    


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8 years ago

What kind of batteries are you thinking of