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Female axle - hollow center axle, typically 14, 15, 17, or 20 mm in diameter made of chromoly and aluminum, with two bolts thread into on either side. [2] This design can be much stronger than traditional axles, which are commonly only 8 mm, 9 mm, 9.5 mm, or 10 mm in diameter. [3] (found on higher end BMX hubs and some mountain bike hubs)
BMX bikes are specially designed bicycles that usually have 16 to 24-inch wheels (the norm being the 20-inch wheel), which originated in the state of California in the early 1970s when teenagers imitated their motocross heroes on their bicycles. [71] Children were racing standard road bikes off-road, around purpose-built tracks in the ...
A track bicycle or track bike is a form of fixed-gear bicycle optimized for racing at a velodrome or at an outdoor track. Some road racing and club cyclists use a fixed-gear bicycle for training during the winter months, generally using a relatively low gear ratio, believed to help develop a good pedalling style. [5]
[20] [21] [22] The Bikeabout scheme was launched in October 1995 by the University of Portsmouth, UK as part of its Green Transport Plan in an effort to cut car travel by staff and students between campus sites. [21] Funded in part by the EU's ENTRANCE [note 1] program, the Bikeabout scheme was a "smart card" fully automated system.
With design selection in 1992, the series development phase began and took 39 months until start of production. The domestic German design patent was filed on 20 April 1994, with an E39 prototype. [10] Pre-production cars rolled off the pilot line from February 1995 starting with 523i and 528i models.
A prominent supporter of this movement was John Richard Eden, [55]: 20 who would later become mayor of the town in 1899. [56] The parks board was followed in 1899 by a water commission, whose creation was heavily supported by local industrialists following a devastating fire at a local factory in 1896, as well as due to the need by many ...