Originally Posted by vlmarshall  I wonder if anyone has used one of the 2000-4000watt brushless RC aircraft motors yet. 
If I could find a way to control it, I'd do it. The idea of low-speed torque AND 10k spindle speeds is hard to ignore...but I'm spoiled by the Haas 10k spindle. |
Almost! I built a spindle with a 3 Hp Magmotor like the combat robot guys use. The spindle wasn't much good, but the motor was ferocious. I used a controller with a 5K pot, like the ones they have on electric scooters. Rated speed at 24v is 6000 rpm, and it has tons of torque.
If I could keep the motor cool, I would absolutely use it on something like the Sherline spindle.
You can control the brushless RC motor controllers with a servo tester -
http://www.robotcombat.com/products/RL-SRVTST.html
Did you consider using a servo to drive the spindle? Everybody I've heard of doing that has been very pleased with their performance.
Best regards,
Jason