Why doesn't my (battery-powered) light work in the cold?
If the lights turn off in the cold even with fresh batteries, then you may have a faulty solder joint. As the light gets colder, the components in it ...
9 Speed Cassette does not go all the way in on the free-hub body
How many sprockets can I fit on a crank?
Can my cantilever brake pads not being centered lead to a problem?