Here's some pics of my knex generator. There is a video of my generator running on YouTube; 

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And i already tore it apart.....
I could make it crank powered, but i would have to gear it up and possibly eliminate fan to make less stress on the knex rods and gears. And thanks.
although that is awesome, in technical terms, that is a waste of energy... you're using one battery to charge another. there is also a lot of energy loss in this process. but i really like this. could it work in slower paces? i ask because it would be awesome if you could hand crank it to create a dynamo charger. you got 4.5 * from me.

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More by christiangg:Knex Generator Blade msr Flybar mod 
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