Hi Erik, > Hmm, I thought I'd read years ago that skewed brushes gave the motor a > preferred direction of rotation.
They do. > I haven't heard of skewed armature > before. Your experience with their smooth operation is worth more than > anything I can read on a website. > With straight armatures the motor torque jumps slightly as each gap in the armature passes the magnets. With a skewed armature you don't get the sudden jumps in torque. If you turn a cheap DC motor by hand you will really feel the jumps. However the magnet design can also drastically effect the torque ripple and smoothness. Treadmill motors for instance have straight armatures but still run very smoothly. Les ------------------------------------------------------------------------------ Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
