ISEN-ASTC-L is a service of the Association of Science-Technology Centers Incorporated, a worldwide network of science museums and related institutions. ***************************************************************************** Dan, What broke? The handle or the actual generator? My experience is that the handles fail long before the generator. Creating a custom crank from sturdier materials would be my suggestion. Sent from my iPhone On Mar 8, 2013, at 9:32 PM, Dan Zevin <[log in to unmask]> 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 > **************************** > > AST:7731^29u18e3 > > *********************************************************************** > For information about the Association of Science-Technology Centers and the Informal Science Education Network please visit www.astc.org. > > Check out the latest case studies and reviews on ExhibitFiles at www.exhibitfiles.org. > > The ISEN-ASTC-L email list is powered by LISTSERVR software from L-Soft. To learn more, visit > http://www.lsoft.com/LISTSERV-powered.html. > > To remove your e-mail address from the ISEN-ASTC-L list, send the > message SIGNOFF ISEN-ASTC-L in the BODY of a message to > [log in to unmask] *********************************************************************** For information about the Association of Science-Technology Centers and the Informal Science Education Network please visit www.astc.org. Check out the latest case studies and reviews on ExhibitFiles at www.exhibitfiles.org. The ISEN-ASTC-L email list is powered by LISTSERVR software from L-Soft. To learn more, visit http://www.lsoft.com/LISTSERV-powered.html. To remove your e-mail address from the ISEN-ASTC-L list, send the message SIGNOFF ISEN-ASTC-L in the BODY of a message to [log in to unmask]