When riding my bike on an indoor trainer (Fig. 1), I use a box fan plugged into an electrical outlet to keep cool. However, I'd rather not use electricity to run the fan when the power I'm producing on the bike is going to waste Thus, the purpose of this project is to use the rotation of the bike trainer to drive a fan. Specifically, I want to transfer the rotation behind the real wheel of the bike to where the rider is seated at a rotational velocity approximately equal to a typical box fan, or about 500 - 800 rpm.
