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locomotives, the driving wheels may be directly driven by the traction motors. Coupling rods are not usually used, and it is quite common for each axle to have...

An axle or axletree is a central shaft for a rotating wheel or gear. On wheeled vehicles, the axle may be fixed to the wheels, rotating with them, or...

than two axles (e.g. some trucks), the wheelbase is the distance between the steering (front) axle and the centerpoint of the driving axle group. In...

driving axles, starting at A for a single axle. C thus indicates three consecutive pairs of driving wheels. Lower-case "o" Related to driving axles (minimum...

between or above the driving wheels. Passenger locomotives had leading bogies with two axles, fewer driving axles, and very large driving wheels in order to...

the wheel arrangement of four leading wheels on two axles, two powered driving wheels on one axle and no trailing wheels. This type of locomotive is often...

directly between the driving axles. Both of these examples used vertical cylinders, with the crankshaft in the plane of the driving axles. The former used...

largely because of their use of an inside third cylinder driving the cranked second driving axle between the frames. There was no inside valve gear, however...

the space also needed for the driving axle. One solution to the problem was the Crampton design, in which the driving axle was moved behind the boiler's...

arrangement of four leading wheels on two axles, two powered driving wheels on one axle, and two trailing wheels on one axle. Other equivalent classifications...

A portal axle (or portal gear lift) is an off-road vehicle suspension and drive technology where the axle tube or the half-shaft is offset from – usually...

trailer and the gross axle weight rating specifies the maximum weight on any particular axle. A car driver licence is limited to driving vehicles up to a maximum...

maximum traction). A maximum traction truck has one driving axle with large wheels and one nondriving axle with smaller wheels. The bogie pivot is located...

arrangement). It featured four leading wheels, fourteen coupled driving wheels (seven axles) in a rigid frame, and four trailing wheels.[citation needed]...

bus is to have a forward section with two axles leading a rear section with a single axle, with the driving axle mounted on either the front or the rear...

highway-legal trucks, typically outfitted with off-road features such as a front driving axle and special tires for applications such as logging and construction,...

steam locomotive that has an unpowered three-axle leading truck followed by a single powered driving axle. This wheel arrangement is associated with the...

even allow just a single driving axle. This allowed the simplification of not requiring either a chain drive between the axles or Stephenson's invention...

steam locomotive Onward had polygonal driving wheels. This rather ineffective locomotive with only one driving axle was built in 1887 by the Hinkley Locomotive...

be purpose-built. Ballast is placed above the driving axle, or spread out over multiple driving axles to maximize traction on each and evenly distribute...