This is what the Lovejoy unit looks like.

[Linked Image]

The three outboard holes would bolt into the rotor/hub attached to the crank with the big nut. The inner three bolts would then bolt to the shaft that would be coupled to the flywheel adapter shaft. This allows for a bout a 7.5 degree wind up under max torque of 408#ft. I know, the torque pulses are greater, but I would still think this is a good fit for a trial run on someone's M3W.

The BMW does not allow for any wind up and is basically just a "slightly" flexible coupling that will allow for very slight misalignment, but again, no wind up for torque pulse. This going to basically be a direct coupling setup.

Oh well, the Centa is the ole "bird in the hand" scenario and probably a good enough one at that, with Phil's pucks.

Dan