I have been working on a furnace fan with a four speed AC induction motor. It came to mind that a four speed motor might be handy as a spindle motor, but when I powered the motor up on the bench, with no load, the four speeds seemed to be the same. My guess is that the different "speeds" are actually different slip/load rates. Is this correct? If so these motors would be useless as a multi-speed spindle motor.
In my fan research, I found a new(er) fan motor technology using a brushless DC motor with a built in speed controller. It looks like these motors might be handy for something, but they may not be cheaply available until their host furnaces start giving out. Has anyone had any experience with these motors? http://www.mnpower.com/powerofone/one_home/hvac/furnace/index.htm -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA ------------------------------------------------------------------------------ This SF.net email is sponsored by Make an app they can't live without Enter the BlackBerry Developer Challenge http://p.sf.net/sfu/RIM-dev2dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
