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Rail vehicle wheels are usually mounted on a solid axle, so they turn at the same speed.When a vehicle turns the outer wheel has to travel further than the inner wheel. On a road vehicle, this is usually achieved by allowing the wheels to move independently, and fixing the front wheels in an arrangement known as Ackermann steering geometry.
The most popular scale in Japan. For models of Shinkansen high speed trains and other systems using standard gauge track, the international N scale standard ratio of 1:160 is commonly used. TT9: 1:120: 9 mm (0.354 in) Used also in New Zealand. HOn 2 + 1 ⁄ 2: 1:87: 9 mm (0.354 in) Used for 2 ft 6 in (762 mm) narrow gauge. 13 mm: 1:80: 13 mm (0 ...
A train wheel or rail wheel is a type of wheel specially designed for use on railway tracks. The wheel acts as a rolling component, typically press fitted onto an axle and mounted directly on a railway carriage or locomotive , or indirectly on a bogie (in the UK), also called a truck (in North America).
An axlebox, also known as a journal box in North America, is the mechanical subassembly on each end of the axles under a railway wagon, coach or locomotive; it contains bearings and thus transfers the wagon, coach or locomotive weight to the wheels and rails; the bearing design is typically oil-bathed plain bearings on older rolling stock, or roller bearings on newer rolling stock.
In 1886, the southern railroads agreed to coordinate changing gauge on all their tracks. After considerable debate and planning, most of the southern rail network was converted from 5 ft (1,524 mm) gauge to 4 ft 9 in (1,448 mm) gauge, then the standard of the Pennsylvania Railroad, over two days beginning on May 31, 1886. Over a period of 36 ...
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When American railroad tracks extended to the point that they began to interconnect, it became clear that a single nationwide gauge would be beneficial. Where different gauges meet, there is a "break of gauge". To overcome that problem, special compromise cars were able to run 4 ft 10 in (1,473 mm) and standard gauge track. [18]
The rails generally slant inwards at 1 in 40, a lesser angle than the wheel cone. Without the conical shape, a wheel would tend to continue in a straight path due to the inertia of the rail vehicle, causing the wheelset to move towards the outer rail on the curve. The cone increases the effective diameter of the wheel as it moves towards the ...