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