On Sat, 2011-01-22 at 22:34 +1100, Erik Christiansen wrote: ... snip > Now an important question. Where is it planned to source the BLDC > motors? :-) > > Erik
I have been thinking about this too. There is a fair amount of activity with DIY out-runner motors in the model airplane community. Occasionally, they can get enough orders together to have a batch of custom silicon steel laminations made. The bell, magnets, bearings, hub and stator windings are easy enough for an individual to make. There is at least one person on this list that has an out-runner on their mill spindle. Typically these motors don't have rotor sensors, so adding Hall sensors will most likely be needed if one wants to start the motor with a load. I would really like to try to make an out-runner that caters to an axis application. It certainly isn't like we can't do the machined parts. I have a link to a lamination manufacturer in the Los Angeles area that indicates they will do short runs, but I'm not sure a punch die would be too difficult to make. Finding a source of the silicon steel remains a problem. I think an in-runner would be more difficult because fixing the magnets to the rotor and keeping them there at high RPM and temperature might be beyond DIY technology. There is a lot more fun to be had. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA ------------------------------------------------------------------------------ Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
