Harris Cyclery -  .

Ask the Mechanic - - Andy the Mechanic, AKA Andy Wallen, fields technical and bicycle fix-it questions.

Bicycle Maintenance Guide - - Summary of what an experienced cyclist has learned over the years.

Bicycle Maintenance Guide and Riding Tips - - Contains maintenance tips and tutorials categorized by topic.

Bicycle Repair - - A Free Internet Presentation That Shows You How To Fix Bike.

Bicycling Maintenance & Technical Books - - Repair, maintenance, frame & wheel building.

BikeForums.net: Bicycle Mechanics - - Topics include bicycle maintenance, repair and common issues and fixes.

BikeWebSite - - Step-by-step guides for bicycle tune-up and repair. A comprehensive, illustrated, online bicycle repair manual.

Chain-Suck in a Nutshell - - Chain-Suck binds chains onto the teeth of chain-rings, and brings pedalling to an abrupt stop. Find out why, and how to resolve the problem.

CyberCycle - - Repair Shop Note.

FAQ from rec.bicycles.tech - - "Frequently Asked Questions" list from the rec.bicycles.tech newsgroup. Valuable answers that give more details than most sources.

GeRZ Bicycle Gear Tables - - Learn to check and evaluate bicycle gear ratios to improve the efficiency of your road or off-road bike -- includes both 27" and 26" gear charts.

Home made cheap bright light - - Detail of my experience making a 20W 12V 20 degree headlight for my bicycle commute.

HPV Drivetrain Analyzer - - Drivetrain evaluator for bicycles, tricycles and other HPV's that use chains, sprockets, geared cranks and hubs with 1:1 power transfer to environment, ie wheels rather than screws.

Mountain Bike Repair - - Step-by-step bike tuneup and repair with color photos.

ProMechanics.com - - USA Cycling's advisory board for bicycle mechanics provides this site on how to become or locate professional race mechanics. Also, includes resources for the mechanic.

Sturmey Archer SW Hubs - - Hints and tips for maintenance and repair of the "silent" Sturmey Archer hub.

United Bicycle Institute Technical Forum - - Post questions and get answers. Also, provides search engine that researches archived postings.