Bicycle battery/generator modification

Provides for battery lighting when bicycle is stopped, and battery recharge when bike is moving and generator is on. Next step is to series wire three red leds direct to bartteries through a micro switch mounted beneath the brake levers, for stop light.

D-1, D-3 5.1V Zener diode1N4733A or equivalent
D-2 200PIV Diode 1N4003 or equivalent If(max) 1A, Vf @If 1.5V
SW-1 SPST Toggle
posted by on Thursday, May 14, 2009 - link to this photo
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2 Comments
Bear...
Bearterrible
offline 1
Fri, October 16, 2009 - 12:54 AM
Have a look at building your own buck converter.

The problem I found with diode systems (single & 4 way) is that I just was not riding fast enough to put in significant charge (Over 10mph-15km/hr).
Fri, October 16, 2009 - 4:35 AM
I do most of my riding in rolling terrain, and find that 60% of the time, I am doing close to 15 mph (24km/h), or even farter downhill - up to 50 mph (80 km/h) on two of the long downhills that I often ride - so it works pretty well for me.

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