 | This article is rated Start-class on Wikipedia's content assessment scale. It is of interest to the following WikiProjects: | |||||||||||||
| ||||||||||||||
A diagram is needed edit
Anyone with good drawing skills, an ultra-zoomed in image of a wheel on the rail would be most helpful, to illustrate just what all the variables mean. Rails (talk) 00:28, 26 May 2010 (UTC)