MAC KIT FROM CELLMAN:
I ordered a 6T MAC and controller from Cellman at http://www.emissions-free.com/
Paul (Cellman) provides a great service and great gear, just be prepared for a little slower experience. There is no Amazon prime when ordering from China, and that said, I think Paul run’s a pretty good show.
The kit arrived well packed and in perfect condition:
And Paul was nice enough to write the shunt value on the controller shrink wrap.
The motor ships ready to install with the hall and phase wires terminated, but I had to fit the floating brake bushing on the axle which meant separating the Andersons and pulling the pins on the hall connector.
I mounted an Avid 203mm rotor to the motor:
The screws that shipped with the brakes were too long, so they needed to be shimmed up with the washers shown.
When I got to mounting the floating brake, the bushing was too small to fit on the motor axle. Normally, there is a 9mm skewer that fits into another piece of the bushing. So, I just drilled the bushing about a bit in order to fit the axle using some serious half ass mounting on the drill press…
The end result fit pretty well. But, you’ll notice there is still a ½ mm space/lip on the hole. That resulted in a little play once mounted. Next time I pull it apart, I’ll pack that area with something to dampen the play.
With the dropout mounted on the brake side, things just fit. Later with everything snugged up there’s just enough axle threads left to fully seat the outer nut.
The next photo below shows the rear view…everything just fit. But, due to the wide drop out and brake mount, there’s no room for a torque arm on this side. Also, the 203mm rotor is just tall enough to clear the MAC motor. Anything else would have required some mods.
The Cellman controller that shipped with the kit is an Infineon based 12 FET. I pulled the shell to paint it black (I know that lowers the thermal conductivity a bit, but that’s ok. 1800 watts at 48 volts isn’t really working a 12 FET that hard.) While I had it open, I laid some silicone into the wire ports to seal that up better, and put some Arctic Silver thermal paste on the FET shell cooling block.