http://www.youtube.com/user/Ride122609
This is a fixed displacement operational (on compressed air) prototype. The next step is in a vehicle. The concern of mine was would this be balanced in operation. You can see it is sitting on a frame machine in my friends body shop. My hand is holding the base. Not sure of the RPM but I would estimate it at 2k without a trace of vibration. If it could not be balanced then it would be useless as any in wheel drive.
regards
Mech