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Two-armed wheel truing stand One-armed wheel truing stand. A wheel truing stand is a specialized tool for "truing" (straightening) bicycle wheels. [1] [2] Individual models differ slightly, but all consist of an axle stand on which the wheel can rotate and calipers, to measure slight deviations of the wheel's rim from ideal alignment.
The Triumph TSX was a British motorcycle credited by the factory as being designed in 1981–1982 by Wayne Moulton, president of Triumph Motorcycles America(TMA), the factory's American arm. [1] This is the only instance of Triumph's signature twin cylinder models being designed by an American.
The basic motorcycle swingarm is a quadrilateral, with one short side connected to the motorcycle's frame with bearings so that it can pivot. [14] The other short side is the rear axle around which the rear wheel turns. The long sides are connected to the motorcycle's frame or rear sub-frame with one or two shocks with coil-over springs.
A motorcycle fork is the portion of a motorcycle that holds the front wheel and allows one to steer. For handling, the front fork is the most critical part of a motorcycle. The combination of rake and trail determines how stable the motorcycle is. The 'fork' on a motorcycle consists of multiple components.
For a sample motorcycle moving at 22 m/s (50 mph) that has a front wheel with a moment of inertia of 0.6 kg·m 2, turning the front wheel one degree in half a second generates a roll moment of 3.5 N·m. In comparison, the lateral force on the front tire as it tracks out from under the motorcycle reaches a maximum of 50 N.
Exploded view of a Michell type thrust bearing. Note, each sector shaped pad can pivot on the ridges on the lower plate. Fluid-film thrust bearings were invented by Albert Kingsbury, who discovered the principle in the course of bearing and lubrication investigations commencing in 1888 while a student.
A center stand kickstand is a pair of legs or a bracket that flips straight down and lifts the rear wheel off the ground when in use. Center stands can be mounted to the chain stays right behind the bottom bracket or to the rear dropouts. Many motorcycles feature center stands in addition to side stands. The center stand is advantageous because ...
Gemini Orbit Attitude and Maneuvering System, and Reentry (mislabeled "Reaction” [4]) Control System. The Mercury space capsule and Gemini reentry module both used groupings of nozzles to provide attitude control. The thrusters were located off their center of mass, thus providing a torque to rotate the capsule. The Gemini capsule was also ...