On Friday 11 March 2016 17:23:14 andy pugh wrote: > On 11 March 2016 at 22:07, Gene Heskett <ghesk...@wdtv.com> wrote: > >> 7M5Q-6B319-BA (£52) is a magnetic encoder ring that looks ideal > >> for a lathe spindle. It has a pressed-in bush that is 70mm OD. > > > > How large is the ring itself? > > Probably 100mm. > 4", too big to hide in anything I have.
> > One wire? How hard is that to handle in a .hal file? > > Very. It would need significant changes to the software encoder > counter, but missing-tooth index isn't a terrible idea for some > applications. I would think there might be some count loss in a reversal in the middle of a turn. But in an iC engine, the chances of it turning backwards while running boggles my mind. > In practice when the idea was first used it wasn't actually a missing > tooth on the starter ring-gear it was a slightly shorter tooth, and > that is something you could probably afford to do to a lathe bull-gear > (maybe not full width) True. but that bull gear is still less than 2" OD in the lathe. I've not rx'd a reply from AllegroMicro yet, probably won't if it hasn't appeared by now. Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ Transform Data into Opportunity. Accelerate data analysis in your applications with Intel Data Analytics Acceleration Library. Click to learn more. http://pubads.g.doubleclick.net/gampad/clk?id=278785111&iu=/4140 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
