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2. Bicycle gearing - Wikipedia

   en.wikipedia.org/wiki/Bicycle_gearing

   One standard option for the Brompton folding bicycle is to use a 3-speed hub gear (roughly a 30% difference between gear ratios) in combination with a 2-speed derailleur gear (roughly a 15% difference) to give 6 distinct gear ratios; this is an example of half-step gearing. Some Brompton suppliers offer a 2-speed chainring 'Mountain Drive' as ...

3. Bicycle performance - Wikipedia

   en.wikipedia.org/wiki/Bicycle_performance

   Usually this is assumed to be independent of (speed of the bicycle on the road) although it is recognized that it increases with speed. Measurements on a roller-mechanism give low-speed coefficients of 0.003 to 0.006 for a variety of tires inflated to their maximum recommended pressures, increasing about 50% at 10 m/s. [21]

4. Gear inches - Wikipedia

   en.wikipedia.org/wiki/Gear_inches

   As result, a 28-inch wheel could be made to move a bicycle at the same speed as a 60-inch wheel. Such a bicycle was then said to be geared at 60 gear inches and pedalled similar to an ordinary with a 60-inch wheel. Thus on a bicycle geared at 72 gear inches one revolution of the pedals advances the bicycle the distance that a 72-inch wheel ...

5. Bicycle and motorcycle dynamics - Wikipedia

   en.wikipedia.org/wiki/Bicycle_and_motorcycle...

   Tires have a large influence over bike handling, especially on motorcycles, [9] [45] but also on bicycles. [7] [69] Tires influence bike dynamics in two distinct ways: finite crown radius and force generation. Increase the crown radius of the front tire has been shown to decrease the size or eliminate self stability.

6. CCM (bicycle company) - Wikipedia

   en.wikipedia.org/wiki/CCM_(bicycle_company)

   CCM is a Canadian bicycle brand owned by Canadian Tire. The brand was first used by the Canada Cycle & Motor Co. Ltd, founded in Weston, Ontario in 1899. CCM dominated the Canadian bike market for much of the 20th century before becoming bankrupt in 1983. The CCM trademark was then acquired by Procycle Group, while the company's hockey assets ...

7. ISO 5775 - Wikipedia

   en.wikipedia.org/wiki/ISO_5775

   ISO 5775. ISO 5775 is an international standard for labeling the size of bicycle tires and rims. The system used was originally developed by the European Tyre and Rim Technical Organisation (ETRTO). It is designed to make tire sizing consistent and clear. It replaces overlapping informal systems that ambiguously distinguished between sizes.

8. Three-speed bicycle - Wikipedia

   en.wikipedia.org/wiki/Three-speed_bicycle

   Three-speed bicycle. The three-speed bicycle is a bicycle that uses internal hub gears at the rear wheel hub to provide three gear ratios. Three-speed hubs have been in use since the early 1900s. Though they are heavier than comparable derailleur systems, internal-gear hub systems generally last longer and require less maintenance.

9. Bicycle tire - Wikipedia

   en.wikipedia.org/wiki/Bicycle_tire

   A tubed, clincher tire showing the inner tube protruding between the tire and the rim. Tubular tire rolled from rim to show glue between them. Clincher cross section schematic with 1: rim, 2: rim strip, 3: rim braking surface, 4: bead core, 5: inner tube, 6: casing, 7: tread. The first bicycle "tires" were iron bands on the wooden wheels of ...