Determining Wheel and Wheelset Dimensions

Copyright 2014 International Brotherhood of Live Steamers Proposed Procedure for Determining Wheel and Wheelset Dimensions For Large Scale Trains Introduction In order to allow interoperation of equipment on multiple tracks a series of standard Dimensions have been developed that apply to the design, production, and inspection of wheels and wheelsets (two wheels and an axle). The information that follows discusses some of the reasons for certain Dimensions and provides guidance as to the selection of specific values for all required Dimensions . The Dimensions provided are based on providing compatibility with existing trackwork, which is the type of rail, construction of frogs, and the gauge to which it is laid. The procedure is organized in a series of steps that provide a logical order for the determination of the values to be used.

of the dimensions that must be found to determine the final design. It also shows where track gauge (TG) is to be measured. Figure 1 – Dimensions and Their Symbols Notes on Wheel Dimensions Before presenting specific values, certain terminology must be understood.

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  Terminology, Dimensions

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