Provides technical methods for evaluating and estimating cycling performance and parameters.

Whole lotta gearing going on. Personal home page of a gearing tekkie. Useful lists, large-scale charts and graphs and good explanations.

Article about determining the optimal cadence from Cycling Science

The Exploratorium in San Francisco answers questions about cycling.

Calculates the correct spoke length for any combination of spoke and rim.

Discussion of bicycle crank length, pedalling technique, chainring shapes and position on the bike with many references to scientific studies.