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How do you build a simple bicycle dynamo?



I was just wondering how to make a simple, easy to build dynamo to attach to my indoor bicycle machine, for a school project. The main goal is to connect the dynamo to the bike, and a small lamp that will light up as one pedals on the bicycle machine. Thanks

Here's one set on instructions, but it looks rather complicated. I'll keep looking:
http://www.freelights.co.uk/howmake.html...

Here's what you're looking for, I believe:
http://www.practicalphysics.org/go/exper...
YOU HAVE TO READ THE BYCICEL INSTRUTION
hi, this looks simple to make
http://www.instructables.com/id/eumtl5cb...
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