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This site has been developed to bring together a number of technical items which are related to railways. These include the following areas:

Tractive Effort Curves

Over the years a large number of tractive effort curves have been published by both manufacturers and various national railways as well as a number of technical publications. This information is often difficult to access given the time that has elapsed since it was published and often inaccurate data is perpetuated from one publication to another.  It is intended that the information in this web page is available in a common format (in the form of a picture and the raw data). Where information is derived or suspect it is highlighted.

Vehicle Resistance Data

A key variable in determining the performance of a railway vehicle is the calculation of the rolling and aerodynamic resistance. As with the tractive effort curves this data has been published in various locations but is often difficult to access.

Technical Papers

This is an area where I will occasionally post a technical review or other opinion on an area that interests me.

Use of Data

Please feel free to utilise the data contained within this website. If it is intended for a publication please feel attribute it to 


Although every attempt is made to ensure accuracy of the information does not accept any responsibility or liability for the accuracy, content, completeness, legality, or reliability of the information contained on this website.

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