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For a line with a maximum speed of 60 km/h (37 mph), buffer-and-chain couplers increase the minimum radius to around 150 m (164 yd; 492 ft). As narrow-gauge railways , tramways , and rapid transit systems normally do not interchange with mainline railways, instances of these types of railway in Europe often use bufferless central couplers and ...
In (automotive) vehicle dynamics, slip is the relative motion between a tire and the road surface it is moving on. This slip can be generated either by the tire's rotational speed being greater or less than the free-rolling speed (usually described as percent slip), or by the tire's plane of rotation being at an angle to its direction of motion (referred to as slip angle).
Part of a series on Rail transport History Company types Infrastructure Management Rail yard Railway station list Railway track Maintenance Gauge Rolling stock Bogie (truck) Couplings Freight Locomotives Multiple units Passenger train Commuter High-speed Inter-city Regional Railroad cars Trains Maglev Monorail Urban rail transit Tram History Light rail Tram-train Interurban Rapid transit ...
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Disadvantages include a tendency for 'wind-up' (a torsional spring rate) in the low torque region. Strain wave gearing is commonly used in robotics [ 3 ] and aerospace . [ 4 ] It can provide gear reduction but may also be used to increase rotational speed [ citation needed ] , or for differential gearing .
A gear train or gear set is a machine element of a mechanical system formed by mounting two or more gears on a frame such that the teeth of the gears engage.. Gear teeth are designed to ensure the pitch circles of engaging gears roll on each other without slipping, providing a smooth transmission of rotation from one gear to the next. [2]
Cutting speed may be defined as the rate at the workpiece surface, irrespective of the machining operation used. A cutting speed for mild steel of 100 ft/min is the same whether it is the speed of the cutter passing over the workpiece, such as in a turning operation, or the speed of the cutter moving past a workpiece, such as in a milling operation.
The large disk closer to the top is connected to the engine, the smaller one drives the wheels via chains (missing here). A friction drive [ 1 ] [ 2 ] or friction engine is a type of transmission that utilises the static friction of two smooth surfaces (instead of contact pressure of meshing teeth) to transfer torque between two rotating parts.