Bicycle Power

Bicycle power is one of the most efficient forms of mechanic energy transfer ever invented. Even sitting still, you can put it to work for you in multiple ways.

067 bicycle power - basic chasis
This stationary frame, made from electrical metal tubing, was designed to hold the salvaged bicycle in place so that bicycle power could drive a water pump, an electrical generator, or power tools.
PHOTO: MOTHER EARTH NEWS STAFF