I myself didn't understand it when I first started using a multi-speed bike, so today we'll learn how to use your gears most effectively.
These folks are the heavyweights of classic lightweight collecting, so to speak ;-).
If you are an individual with a bicycle or two, or bicycle parts and accessories to donate for repair, reuse and recycling, it is usually most practical and cost effective to donate them to a local program.
Whether walking to get the mail, biking to school or work, or simply walking or biking around the block, many of us are pedestrians or bicyclists at some point during our day.
Some people walk or bike for recreation, to save money, or to reduce pollution.
The rear gear cluster usually has 7 gears, with some systems having 8 or 9. For most everday riding, you'll want to keep your chain on the middle ring on the front, or number 2 on your left shifter.
This allows you to use the full range of rear gears.
That little screw may look inexpensive, but replacing it may entail buying a new brake caliper or derailleur.
If the part is stuck, applying liberally and waiting overnight can be the best insurance against a sharp snap, followed by anguish and despair.
Others walk or bike because they do not or cannot drive.