ISEN-ASTC-L is a service of the Association of Science-Technology Centers
Incorporated, a worldwide network of science museums and related institutions.
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Dan,

I don't know if this will help but about 7 years ago we used a generator 
from WindStream Power in an exhibit for a children's museum, and it's 
still going strong. They have many different sizes. The one we chose was 
a model they hand mounted to be foot-cranked. That one might be too 
large for your application.

We modified it to be hand-cranked, figuring if it could take being 
cranked with leg power, it might last a while longer in a children's 
museum being cranked by hand.  As far as I know it has held up. There's 
a possibility it was replaced once over that time.

http://www.windstreampower.com/


Best wishes,


Joe R.



On 3/8/2013 8:32 PM, Dan Zevin wrote:
> ISEN-ASTC-L is a service of the Association of Science-Technology Centers
> Incorporated, a worldwide network of science museums and related institutions.
> *****************************************************************************
>
> 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
>
> ****************************
> 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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