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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).
Most train wheels have a conical taper of about 1 in 20 to enable the wheelset to follow curves with less chance of the wheel flanges coming in contact with the rail sides, and to reduce curve resistance. The rails generally slant inwards at 1 in 40, a lesser angle than the wheel cone.
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The General Overhaul Program (GOH) was a mid-life overhaul program for neglected subway cars, which involved a thorough rebuilding of the fleet. Since the completion of the GOH program, the new Scheduled Maintenance System (SMS) program has replaced the GOH program by ensuring that trains do not reach a state in which they would need such an overhaul.
NBC News spoke to four families who were denied or struggled to get reimbursed by their health care sharing ministry for pregnancy or childbirth-related expenses. All felt they had been deceived ...
The part of the plate under the rail base is tapered, setting the inboard cant of the rail, typically "one in forty" (or 1.4 degrees ). The top surface of the plate has one or two shoulders that fit against the edges of the base of the rail. The double-shoulder type is currently used.
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If it’s in the news right now, the L.A. Times’ Opinion section covers it. Sign up for our weekly opinion newsletter. This story originally appeared in Los Angeles Times .