This is what the Kollmorgen CTI-187-2 motors look like. They are rated 400W@24V and have an internal controller for the 3 phase brushless motor.  These motors showed up on the surplus market a couple of years ago and were originally made for Currie, but they revolve CCW looking at the shaft, and that is the wrong direction for a Currie USPD drive, so the story is that Currie refused to accept them and they sat in a warehouse for a few years before somebody bought them and started selling them.

I bought several when they first came out, for $39 each, and Scott at EVdeals reversed the motor for me and mounted it on a USPD drive I bought from him.  He asked me not to spread the technique around for reversing them, and I have honored that promise. I have reversed quite a few of them and have been sellng them for $59 including $9 Priority mail shipping in the US. I have also modified a few for use with an external controller, and they do very well at 36-48v, but I am no longer selling those, as I think the BMC motor is a better choice.

I recently discovered how to dig into the potting and find the reverse pin on the controller chip, so now I am offering a reversible version of the motor for robots and other uses for $79 including shipping. A control line is grounded for CCW and left open for CW.

At 24V they spin up to about 3000 rpm. efficiency peaks in the mid-80% range. the magnet is a cylinder glued to a steel core with 18 poles, and there are 3 sets of coils, 6 for each phase. That is all the information I have about them, I do not have any dyno data.

The folks who have used them to replace their other Currie drive motors say they have a bit more torque and are maybe 1-2 miles slower as a result. At 24V I had no problem passing 20 mph with one of these motors on a USPD on my Trek with a total weight of 290 lbs. (I was 220 and the bike was 70, but I am down to 175 now and boy does it make a difference in the mileage I get out of a cheeseburger!