I installed the Ashima Airotor on the Crystalyte HS3540 motor last night. You can't really see the gold center portion very well and it looks a bit undersized for the job. I think I'm going to purchase a 200-203mm rotor to see if that fits the motor a bit better. I will need an adapter for the Avid BB5 so that it will fit with the larger rotor.
here is the Avid BB5 installed without the rotor on the motor.
Here's the rotor and Avid BB5 mounted.