On 03/11/2014 08:48 AM, [email protected] wrote: > In our first attempt to make the spindle encoder for the K&T - we grabbed a > timing gear that we had 2 of.. (Something from some old printers we took > apart (70's vintage probably). Well - when we got all done we could not find > a belt to match the pitch. We gave up and used different timing gears that > we knew fit a common belt. > > Yup, that's how I found out about 2mm pitch belts! I added a spindle encoder to a minimill shortly before going to one of the NAMES shows. (See last pic at http://pico-systems.com/minimill.html ) I used some junk pulleys off a printer tractor feed mechanism, I think. I ordered MXL belts for it, put it all together and then saw "lumps" running around the pulleys. After watching for a while, I realized it was a pitch mismatch and about every rev it would build up and the belt would jump a tooth. With time rapidly running out before the show, I ordered 2mm belts, hoping that would be the correct size. (I was able to determine the required pitch was SMALLER than the MXL belt, so I had a pretty good idea the only other thing it could be was 2mm.) The right belts showed up just days before I had to leave for NAMES, but I was able to get a very early version of lathe threading working for display there.
Jon ------------------------------------------------------------------------------ Learn Graph Databases - Download FREE O'Reilly Book "Graph Databases" is the definitive new guide to graph databases and their applications. Written by three acclaimed leaders in the field, this first edition is now available. Download your free book today! http://p.sf.net/sfu/13534_NeoTech _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
