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2. 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.

3. List of cycling records - Wikipedia

   en.wikipedia.org/wiki/List_of_cycling_records

   On land, the speed record registered by a rider on a 200-meter flying start speed trial was 133.28 km/h (82.82 mph) by the Canadian Sam Whittingham riding the Varna Tempest, a streamliner recumbent bicycle in 2009, [19] at Battle Mountain, Nevada. His record has been surpassed by 0.5 km/h by Sebastiaan Bowier of the Netherlands in 2013 setting ...

4. Humber Cycles - Wikipedia

   en.wikipedia.org/wiki/Humber_Cycles

   Humber Cycles. Humber is an English brand of bicycle. [1] Thomas Humber made himself a velocipede in 1868. From that time he built a substantial business in manufacturing tricycles and bicycles while continuously improving their design and construction. His products were so well-made and well-designed they were known as "the aristocrat among ...

5. List of bicycle types - Wikipedia

   en.wikipedia.org/wiki/List_of_bicycle_types

   A lugged steel bicycle has a frame made of steel. A plastic bicycle was an attempt in the early 1980s to introduce a bicycle made entirely out of plastic materials instead of metal. A wooden bicycle has a frame made out of wood. One example is the Chukudu used in the east of the Democratic Republic of Congo.

6. Roadster (bicycle) - Wikipedia

   en.wikipedia.org/wiki/Roadster_(bicycle)

   Roadster (bicycle) An opafiets, a single speed traditional Dutch roadster with double top tube and coaster brake. A roadster bicycle[1] is a type of utility bicycle once common worldwide, and still common in Asia, Africa, Latin America, and some parts of Europe. During the past few decades, traditionally styled roadster bicycles have regained ...

7. Bicycle performance - Wikipedia

   en.wikipedia.org/wiki/Bicycle_performance

   From a mechanical viewpoint, up to 99% of the mechanical energy delivered by the rider into the pedals is transmitted to the wheels (clean, lubricated new chain at 400 W), although the use of gearing mechanisms reduces this by 1–7% (clean, well-lubricated derailleurs and a straight chainline), 4–12% (chain with 3-speed hubs), or 10–20% (shaft drive with 3-speed hubs).