German C't Magazine had an article a couple of months ago about how to
keep a PDA/GPS charged with a hub dynamo while cycling. They basically
showed you how to construct a buffer battery and electronics for it,
that can fit into the seat tube. I dont know if there a English
translation, the article unfortunately is paying.
http://www.heise.de/kiosk/archiv/ct/2007/23/190_Mit_dem_Nabendynamo_Akkus_aufladen
Jonas Svensson wrote:
On Thu, 21 Feb 2008, Andy Robinson (blackadder) wrote:
I remember those rim running dynamos on my bike as a kid. I hated them
because they made a load of noise and you could really feel the resistance.
It amazes me that nobody has come up with a simpler and more efficient
solution.
There are better solutions, at least for the bikes headlight. I do not
know what the name is in english but the generator is mounted in the
center of the wheel. Can't feel the resistance and it won't clog up by snow.
See for example
<http://webhotel.uni2.dk/dcf/cyklist/cyk20005/20005-07.htm> (in Danish).
/Jonas
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