Science of Cycling The Exploratorium in San Francisco answers questions about cycling. http://www.exploratorium.edu/cycling/

Analytic Cycling Provides technical methods for evaluating and estimating cycling performance and parameters. http://www.analyticcycling.com/

Thankstomycranks cycling pages Discussion of bicycle crank length, pedalling technique, chainring shapes and position on the bike with many references to scientific studies. http://www.cranklength.info/

Spoke Length Calculator Calculates the correct spoke length for any combination of spoke and rim. http://www.geocities.com/d_halem/wheel/wheel.html

Cycling Science - Summer 1996 - What Determines The Optimal Cadence? Article about determining the optimal cadence from Cycling Science http://www.bsn.com/Cycling/articles/cadence.html

Bicycle Gearing Whole lotta gearing going on. Personal home page of a gearing tekkie. Useful lists, large-scale charts and graphs and good explanations. http://www.geocities.com/SiliconValley/Port/2945/Gears/Gears.html

Austin One Wheelers Unicycle Club Includes calendar of events, photos, history of the club, and information about the Yellow Unicycle Project (YUP). http://unicycle.place.org/