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Roadmaster Mt Fury Roadmaster Cape Cod on New York street. Roadmaster Bicycles were first introduced by the Cleveland Welding Company in 1936. In 1950, after purchasing the Roadmaster line of children's and youth bicycles from the Cleveland Welding Company, AMF entered the bicycle manufacturing business with its newly formed AMF Wheeled Goods Division.
Two-speed rear hubs, that the rider shifted by back pedalling, were common, but some featured external rear derailleurs with 3 or 5 gear ratios and automotive-like gear shifters mounted on the top tube. Brakes. Coaster brakes and rim brakes were common. The 1968 Schwinn Krate models had a front drum brake. [9]
Hub gear: a gearbox mounted inside the hub, 3-speed is common, 5, 7 are available ("Sturmey-Archer"), Enviolo makes a CVT, and Rohloff makes a 14-speed hub. Cable operated by one or two cables; Indicator: a turn signal; Inner tube: a bladder that contains air to inflate a tire. Has a Schrader, "Woods"/"Dunlop" or Presta valve for inflation and ...
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
In 1997, the Roadmaster bicycle division was sold to the Brunswick Corporation. However, it became evident that production of low-cost, mass-market bicycles in the US was not viable in the face of foreign competition, [12] and in 1999, all U.S. production of Roadmaster bicycles ceased.
All Sturmey-Archer gear hubs use epicyclic (planetary) geartrains of varying complexity. The AW is the simplest, using one set of planetary gears with four planets. The AM uses three compound planets with differently sized cogs machined from a common shaft to engage the gear ring and sun gear separately, while the close-ratio three-speeds, and hubs with four or more speeds, use multiple ...
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