3 links
Analytic Cycling
analyticcycling.com
Provides technical methods for evaluating and estimating cycling performance and parameters.
Bicycle Gearing
geocities.com
Whole lotta gearing going on. Personal home page of a gearing tekkie. Useful lists, large-scale charts and graphs and good explanations.
Spoke Length Calculator
geocities.com
Calculates the correct spoke length for any combination of spoke and rim.