On Fri, 28 Aug 2020 at 11:21, Thomas J Powderly <[email protected]> wrote: > > Gene an old client called about using a Newbould indexer on his machine.
That's rather clever, using a differential indexer to get finer graduations. The idea goes back a long time, the same principle was used for magneto couplings in the early days of motoring: https://commons.wikimedia.org/wiki/File:Vernier_coupling_(Manual_of_Driving_and_Maintenance).jpg Though the example in the video seems different, and in fact _appears_ to be using a non-integer number of teeth in the bottom interface... Another unexpected place that you might find a Hirth coupling is in the middle of a set of bicycle cranks: https://www.parktool.com/blog/calvins-corner/campagnolo-ultra-torque-and-record-group -- atp "A motorcycle is a bicycle with a pandemonium attachment and is designed for the especial use of mechanical geniuses, daredevils and lunatics." — George Fitch, Atlanta Constitution Newspaper, 1912 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
