Ian W. Wright <watchma...@...> writes: > > > > Thanks Tom, excellent info. I have emailed him and am > awaiting his reply. The motors and controllers certainly > look affordable on Ebay although I'm not too sure about the > drive shafts which mostly look puny - still, I might just go > and hunt around the garage to see if I have an old welder to > make a power supply and then order a motor to play with... > > Ian > > ------------------------------------------------------------------------------
You bet Ian. btw I ordered a motor and esc to experiment with as part of my desire to make a better waste veggie oil transfer pump for my diesel truck. I will be running it at lower rpms (2500 - 3500) than you would, but it might lead me to do a spindle retrofit to my little LightMachines cnc mill. In that case I will post relevant info here. Kent's post is spot-on regarding getting rid of heat (both motor and esc) when you run these little things. It is not so much that they make more heat than a comparable motor on a rated power basis (actually they make less heat per motive force generated) but what is amazing is the amount of heat coming from such a small package! For an inrunner, I would use a heat sink and a fan. Also, if you order a cheap chinese esc, you might want to beef up the capacitor bank which is usually puny when you look at the amount of current being switched (usually at 16K Hz)and the resulting ripple. Tom ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
