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Greetings,

We're looking for a robust yet small, lightweight hand crank generator that can withstand a lot of use by teenagers.  This one gave us about 20 hours of use before the small handle snapped off: http://www.k-tor.com/hand-crank-generator/   

The crank needs to output at least 10W of power.  

If you've got suggestions for something better, we'd love to know about them!

Thanks,

Dan

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Dan Zevin 
Public Education Specialist
Space Sciences Laboratory
7 Gauss Way, MC 7450
University of California, Berkeley
Berkeley, CA 94720-7450 

(510) 642-8326 
(510) 643-5660 [fax] 
[log in to unmask]
http://cse.ssl.berkeley.edu
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AST:7731^29u18e3

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