We have another article about inner tubes. ![]() The inner tube has a valve to allow you to inflate it. The fabric spreads the load along the rim beyond the segment in contact with the road surface.Ī bicycle tire is not airtight by itself, so it uses an inner tube, which is basically a doughnut-shaped rubber balloon. All the air in the tire serves as a spring, and so the air pressure does not increase much as the small segment at the bottom compresses. The tire is filled with pressurized air, which tensions the fabric.īecause a pneumatic tire is hollow, it can be compressed almost all the way to the rim without any damage. Tools and supplies for tire maintenance Why Pneumatic?Ī pneumatic tire is made of fabric covered with rubber. Inner tubes: choices, valve types, tips and tricks There are related articles on this site about: ![]() This article will show how to avoid flats and how to repair a flat tire. Also, it is usually possible to repair a flat tire in a few minutes. With good riding technique and equipment choices, most flat tires are avoidable. Dunlop looking good on a bicycle with pneumatic tires Foam-type "airless" tires/tubes cannot compress nearly as far, and concentrate the load.ĭr. It has such great advantages that no substitute can compete.Ī pneumatic tire spreads the load along the rim, and can flatten almost all the way to the rim without any damage. Why? Of all the inventions that came out of the bicycle industry, probably none is as important and useful as Dr. ![]() A flat tire is by far the most common unexpected mechanical problem that completely disables a bicycle.
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