Is it possible to buy an exercise/stationary bike which generates electricity? If not, how hard would it be to build one or modify an existing exercise bike?
posted by handee on Jul 25, 2007 - 5 answers

Calling all electrical engineers, cyclists and gadget freaks: How can I modify my SON dynamo bicycle wheel hub so that I can use it to power a variety of peripheral devices (cell phone, iPod, GPS, etc.)? [more inside]
posted by piedrasyluz on Mar 6, 2007 - 14 answers