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Roadcraft refers to the system of car or motorcycle control outlined in two books Roadcraft: The Police Driver's Handbook [1] and Motorcycle Roadcraft: The Police Rider's Handbook. [2] The books are produced by the Police Foundation and published by His Majesty's Stationery Office (HMSO).
Honda ST1300 Pan European operated by Freewheelers EVS Blood Bikes charity in South West England Motorcycle courier in London, England DHL courier scooter in Taipei, Taiwan Thailand Post bike loaded with letters and parcels. A motorcycle courier, also known as a despatch rider or motorcycle messenger, is a courier using a motorcycle.
A despatch rider (or dispatch) is a military messenger, mounted on horse or motorcycle (and occasionally in Egypt during World War I, on camels). [1] In the UK 'despatch rider' is also a term used for a motorcycle courier. Despatch riders were used by armed forces to deliver urgent orders and messages between headquarters and military units.
When a back torque comes from the transmission, the splined hub slides up the bearing ramps, disconnecting from the clutch plates and allowing a limited slip between input and output. This type of clutch is designed to partially disengage or "slip" when the rear wheel tries to drive the engine faster than it would run under its own power.
Hub-center steering systems use an arm, or arms, on bearings to allow upward wheel deflection, meaning that there is no stiction, even under braking. Braking forces can be redirected horizontally along these arms, or tie rods, away from the vertical suspension forces, and can even be put to good use to counteract weight transfer.
According to the equation listed above, increasing the trail and/or decreasing the head angle will increase the wheel flop factor on a bicycle or motorcycle, which will increase the torque required to bring the handlebars back to the straight ahead position and increase the vehicle's tendency to veer suddenly off the line of a curve.
For the vehicle design where the vehicle's skin is used as a load-bearing element, see Monocoque. 1921 ABC opposed twin unit construction engine / transmission 1923 BMW R32 unit construction engine / transmission. Unit construction is the design of larger motorcycles where the engine and gearbox components share a single casing.
Bicycle and motorcycle dynamics is the science of the motion of bicycles and motorcycles and their components, due to the forces acting on them. Dynamics falls under a branch of physics known as classical mechanics. Bike motions of interest include balancing, steering, braking, accelerating, suspension activation, and vibration. The study of ...