Science

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

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

Bike Think - Gary Houchin-Miller shares his thoughts on technical topics which examine the fundamentals of bicycle performance. Links to lots of additional information as well.
www.bikethink.com/

Cycling Science - Summer 1996 - What Determines The Optimal Cadence? - Article about determining the optimal cadence from cycling science.
www2.bsn.de/Cycling/articles/cadence.html

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

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

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