**Call in for Details** Technical features of the Air Force Zero Motor The first task was to find a motor to drive this gigantic system. By pursuing every avenue, we finally found some high quality synchronous motors manufactured for tape recorders by the renowned German manufacturer, Papst. These motors proved to be most suitable for our aim, which opened the door to the success of the Air Force Zero project. The next step was to review and modify the Papst motors so that they could work optimally for the world’s best turntable system. Building on the 3-phase, 12-pole synchronous AC large torque motor, we developed a customized air bearing and flywheel technologies which we used in driving the motor. The major features of the Air Force Zero Motor are:1. High precision rotation with virtually zero wobble due to the combination of high precision metal bearing and air bearing.2. Enormous inertia generated by flywheel effect.3. Extremely high S/N ratio achieved by the air bearing.4. New electronic driving circuitry designed for stable and precise rotation with low vibration. During a steady state rotation, the driving amplifiers perform smooth rotation without the servo. The servo will be engaged only during the startup process or if the speed is changed by an external force. These technologies results in an exceptional level of rotational precision for a belt-drive turntable. Specifications Type: Reference air-bearing, vacuum hold-down belt-drive turntable Drive system: Belt-drive with polished, non-flexible polyurethane fiber belt Bearing: Air bearing Record hold-down: Vacuum suction system Suspension: Air suspension with dedicated electric air pump Motor: 3-phase, 12-pole Papst AC synchronous motor (Germany) Motor operation: High-torque servo during startup Non-servo, low-torque operation during playback Speeds: 33⅓ & 45 RPM Speed adjustment: Precision electronic fine adjustment Wow & Flutter:
