Fingers crossed it'll cut ally

[Jonathan]

Yes it's the motor you're thinking of! It's currently in pieces since I'm altering the wiring so that I can change it between star/delta for higher torque/rpm etc. You may mant to consider this for your motors? Easier to swap a few wires than change the motor, perhaps.
I've found the straight collet holder - that looks ideal (thanks!), except the shaft is a bit short! I'd prefer ER25 though since I've just bought a set of ER25 collets for my milling machine. I'll have a look around for one / make one if necessary.

The bearings in the motor are already pretty huge. The one at the 'back' is a large thin section bearing about 65mm diameter if I recall correctly.

Maybe create a thread about using these motors?

[blackburn mark]

jonathan... good luck with the ER25, iv seen a few of these ER straight shafts with 150mm to play with,,
cant remember seeing an ER25 though
if you get chatter i would consider at least a double row A/C bearing at the sharp end,
they are already pre loaded and ready to go

[z3t4]

Maybe create a thread about using these motors?

Yes please!

There was an article in MEW (Feb 2008 issue, No 135 ) about making outrunner motors but there wasn't much about how to power them. I'm guessing that the 'servo tester' provides a PWM pulsetrain and the speed controller (is this aka an 'ESC'?) sees the pulsetrain and uses electromagick to provide a 3-phase supply to the motor.

John

[blackburn mark]

[QUOTE=z3t4;14653]Yes please!

it will be a while before i can report any findings on mine... i cant wait to see how jonathan gets on with that monster motor of his and what he gets with the "star/delta" wiring (i have no idea what that is and im just about burnt out on research)