On Saturday 04 May 2013 08:05:46 Steve Blackmore did opine: > On Fri, 03 May 2013 11:10:12 -0500, you wrote: > >In a motor designed for reversible use, the brushes also need to be > >exactly centered on the poles of the field magnets. I would guess > >yours are rotated a bit to compensate for the inductance of the > >armature windings delaying the reversal of the current as the > >commutator slugs pass the brushes. > > Ahh that explains it. It's a permanent magnet motor and it would be easy > to move them or the end case around a bit. It's no big deal for me - > never use it in reverse anyway. I've a couple of Tapmatic self reversing > tapping heads that make it unnecessary :) > > Steve Blackmore
My concern was possibly in nomenclature Steve. My present motor has an arrow on the case indicating the default rotation as being CW if viewed from the brush end bell, or CCW if looking at the output shaft endand the spindle housing apparently has a countershaft that reverses it so the normal chuck rotation is CCW, as is usual. The motor coming is labeled as CW, but I've no clue if that is viewed from the brush end or from the shaft face end. Is there a convention for stating the end of the motor we are looking at when it says CW? Thanks. Cheers, Gene -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) My web page: <http://coyoteden.dyndns-free.com:85/gene> is up! My views <http://www.armchairpatriot.com/What%20Has%20America%20Become.shtml> Love may laugh at locksmiths, but he has a profound respect for money bags. -- Sidney Paternoster, "The Folly of the Wise" A pen in the hand of this president is far more dangerous than 200 million guns in the hands of law-abiding citizens. ------------------------------------------------------------------------------ Get 100% visibility into Java/.NET code with AppDynamics Lite It's a free troubleshooting tool designed for production Get down to code-level detail for bottlenecks, with <2% overhead. Download for free and get started troubleshooting in minutes. http://p.sf.net/sfu/appdyn_d2d_ap2 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
