Analytic Cycling - Provides technical methods for evaluating and estimating cycling performance and parameters.
Bicycle Gearing - Whole lotta gearing going on. Personal home page of a gearing tekkie. Useful lists, large-scale charts and graphs and good explanations.
Science of Cycling - The Exploratorium in San Francisco answers questions about cycling.
Spoke Length Calculator - Calculates the correct spoke length for any combination of spoke and rim.
Thankstomycranks cycling pages - Discussion of bicycle crank length, pedalling technique, chainring shapes and position on the bike with many references to scientific studies.
