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

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.
   http://www.bikethink.com/

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

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

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/