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An early example of plastic bicycle wheels, using fibreglass reinforced Zytel, were Skyway "Tuff Wheels" for BMX bicycles. In this role, any weight penalty was adequately compensated by durability and impact resistance. Former American 200m and 400m sprinter Michael Johnson used shoes made of Zytel at the Atlanta Olympics.
Most modern roller coasters typically have pairs of wheels in each orientation, with 6 wheels per assembly, but this can vary by ride. The up-stop system was developed in 1919 by John A. Miller . He patented a design to make Pleasure-Railway attractions safer.
Nylon is a family of synthetic polymers characterized by amide linkages, typically connecting aliphatic or semi-aromatic groups.. Nylons are generally white or colorless[1][2] and possess a soft texture, with some varieties exhibiting a silk-like appearance.[3]
The Swiss Bob. For the 1996 season, the hard nylon wheels were replaced with rubber ones to reduce noise and run a little faster on the track. Two years later in 1998, the queue line's capacity was expanded and the entire meandering covered and equipped with televisions.
It is sometimes called the Swedish wheel or Ilon wheel after its inventor, Bengt Erland Ilon (1923–2008), [1] who conceived of the concept while working as an engineer with the Swedish company Mecanum AB, and patented it in the United States on November 13, 1972. [2] It consists of a series of rubberized external rollers set at a 45° angle ...
Railroads normally use roller bearings which are either cylindrical (Russia) [63] or tapered (United States). [64] The specific rolling resistance in bearings varies with both wheel loading and speed. [65] Wheel bearing rolling resistance is lowest with high axle loads and intermediate speeds of 60–80 km/h with a Crr of 0.00013 (axle load of ...
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