I’m not a fan of the drive mechanism. Having to move the belt to change the speed means belt contamination from your fingers and varying belt tension because it goes on different size pulleys, so it can never be just the right tension, which really matters if you want rock solid speed accuracy. Also there’s no speed feedback which really matters as the motor, belt, bearing and lubrication temperature changes. I suffered with this inferior design on my VPI Classic 4 for several years before I decided to upgrade the motor to the Sota Total Eclipse, including the Condor power supply and RoadRunner controller. For $4500 I think you should be getting a more sophisticated design. You could upgrade to the HRX pulley and SDS or ADS, but you still don’t get feedback to keep the speed precisely set.
