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The Flying Pigeon PA-02, a single-speed utility bicycle, is the most produced bicycle model in history. A single-speed bicycle is a type of bicycle with a single gear ratio . These bicycles are without derailleur gears , hub gearing or other methods for varying the gear ratio of the bicycle.
The largest multi-bike had 40 riders. [citation needed] In most of these types the riders ride one behind the other (referred to as tandem seating). Exceptions are "The Companion", or "Sociable," a side-by-side two-person bike (that converted to a single-rider) built by the Punnett Cycle Mfg. Co. in Rochester, N.Y. in the 1890s.
Quality Bicycle Products (QBP) is a large distributor of bicycle parts and accessories in the bicycle industry, based in the United States, [2] with revenues of $150 million in 2008. [ 3 ] [ 4 ] In addition to wholesaling bicycles and components from other manufacturers, QBP owns and manufactures several brands of its own.
e-bike Shimano Nexus 4 Speed 4 184% 1st gear City Shimano Nexus Inter-3: 3 187% 2nd gear 1220 g City SRAM Spectro E12 (Elan) 1995 1999 12 339% 3500-4000 g City SRAM i-Motion 9: 2005 2012 9 340% 2000g (w/o brake)-2400g (with coaster brake) City SRAM G8: 2012 2015 8 260% 2088-2180 g [16] [17] City SRAM G9 2014 2015 9 292% 2088 g [17] City, Sport
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).
Flyby Novara folding bike. Novara, was the private label brand of bicycles, apparel and bicycle accessories, that was exclusively available through the consumer cooperative REI. The brand was introduced in 1983 and was headquartered in Kent, Washington. [1] Novara bikes are designed in house; outsourced for manufacturing, then finished by REI. [2]