30-inch diameter, precision knurled rolls provide a massive contact patch for superior traction and minimal tire deflection. Systems with very small rolls or worse, cradle rolls, cause excessive tire deflection creating dangerous amounts of heat in the tire and increasing the risk of tire failure. Any heat in the tire is also power that was not measured by the dyno adding to the inaccuracies of small roll dynos. Additionally, small rolls have such small tire to roll contact they require strapping the vehicle in a downward fashion to make traction – this increases tire deflection and eliminates the suspension, greatly increasing the shock load to the drive train while testing. The large rolls in the SF-832 AWD allow for straps to be positioned more linearly with the goal of holding the car on the dyno, not creating unnatural amounts of downforce reducing stress to the driveline and heat in the tires.
The SF-832 AWD dyno has electric push-button wheelbase adjustment to accommodate wheelbases from 92 to 130 inches. This allows vehicles to be placed in the proper location on the rolls for maximum traction every time. The SF-832 AWD accommodates track widths from 26 to 100 inches and has an equivalent vehicle inertia of 2,400 lbs.
The SF-832 AWD chassis dyno includes all-wheel drive speed synchronization with a simple and reliable driveshaft connection between the front and rear rolls. This eliminates the chance of damaging center differentials and activating traction or stability control systems on the dyno. This driveshaft speed synchronization system is unique to SuperFlow and the only one available that doesn’t have to be disconnected to test above 175 mph. Speed synchronization is always engaged and available up to 185 on the SF-832 AWD
Trunnion mounted differentials are equipped with individual torque cells to measure torque produced at each axle. This system also makes SuperFlow AWD chassis dynos extremely accurate because any variance in dyno components like bearings and differentials are compensated for as the measurement is made.
One high-capacity eddy-current power absorber is mounted to the differential between the rolls to provide more load capacity across the entire operating range. Mounting the power absorber to the differential provides two major advantages over other systems: