FILENAMES: belt.xls DESCRIPTION: Microsoft Excel spreadsheet for pulley speed calculations. Posted by John Stevenson . John provided the following description: ================================================================= Belt.xls is an Excel spreadsheet that gives the speed /ratios of a 4 speed pulley setup on a lathe or miller. It will work on any belt driven machinery and if you only need three speed just omitt the last figures. Feel free to use this any way you like and pass on. There is no copyright attached to this and it is for all to share. Regards, John Stevenson at engineers@btinternet.com