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A wheel hub motor, hub motor, or in-wheel motor is a motor that is incorporated into the hub of the wheel. Wheel-hub motors are commonly found on electric bicycles. Electric hub motors were well received in early electric cars, but have not been commercially successful in modern production cars [1] [2] because they negatively affect vehicle ...
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
E-bikes have reached a market share of 10% by 2009, as e-bikes sales quadrupled from 40,000 units to 153,000 between 2006 and 2009, [84] and the electric-powered models represented 25% of the total bicycle sales revenue in that year. [83]
The Z3 Coupé shares the identical platform and parts with the roadster, but features a chassis-stiffening hatch area and is 2.7 times stiffer in comparison. [10] [9] The Z3 Coupé was unveiled at the 1997 Frankfurt Motor Show. The Z3 was the first BMW car to be solely manufactured outside of Germany. It was manufactured in Greer, South ...
The 3.6 kg (8 lb) NuVinci rear hub. Comparatively, the newer NuVinci hubs from around 2010 [citation needed] weighs 2.4 kg (5.4 lb) The NuVinci CVT may be applicable to many different products using a mechanical power transmission. The only application currently commercialized is the internally geared bicycle hub.
BMW Z1 BMW Z1. The BMW Z1 is a two-seat roadster developed by BMW and was produced from March 1989 to June 1991. It was based on the E30 3 Series platform. [3] The Z1 featured unusual doors which, instead of opening outward or upward, dropped into the door sills and had body panels which could easily be removed and replaced; the car could be driven with all its body panels removed for weight ...
A hub gear, [1] internal-gear hub, [2] internally geared hub [3] or just gear hub [4] is a gear ratio changing system commonly used on bicycles that is implemented with planetary or epicyclic gears. The gears and lubricants are sealed within the shell of the hub gear, in contrast with derailleur gears where the gears and mechanism are exposed ...
Z3 M Roadster. The M-Roadster E36/7 was introduced in 1997 as the high performance version of the BMW Z3.The most significant cosmetic difference between the M-Roadster, including the M-Coupe, is the substantially flared rear quarter-panels ("fender flares") and the correspondingly offset rear wheels.