Desser AS01 Tire & Wheel Balancer

The purpose of the static wheel balancer is to provide a platform and solution so the wheel/tire combination is in static balance after applying weight(s) to the wheel. This static balance will occur when there is no resultant centrifugal force, and the center of gravity is on the center of rotation (at the axle or balancing rod). With the tire/wheel balancer, this would occur if random spins of the tire/wheel on the balancer, come to rest at differing points for EACH spin of the wheel, ie., 4 spins of the assembly come to rest at 2 o’clock, 7 o’clock, 10 o’clock and 3 o’clock. If the tire/wheel has a heavy spot, then the tire/wheel will always stop at that point at the bottom of the arc of the tire/wheel assembly. (6’o’clock or 180 degrees, or, for a technical term, its center of gravity) . Weight would then be applied to the wheel, directly opposite ( 0 degrees, or 12 o’clock) the heavy spot, and the process is repeated until the tire/wheel is balanced.

The tire/wheel assembly is placed on the balancing stand, using a 1" threaded rod, with two cones that are threaded. Each cone is snugged down on each right and left wheel race, which will bring the rod theoretically to the center of rotation. The rod assembly is equipped with ABEC7 frictionless bearings, that is placed on a triangle stand. With the assembly in place, the tire/wheel assembly is spun to detect the static balance.

The static balancer comes with the triangle stand base, the 1”threaded rod, two 45 degree cones, two ABEC7 bearings, and hardware to put the balancer together. The threaded rod is machined from 11’ sections, then cut and put into a CNC lathe to machine each side to accept the bearings. The rod IS NOT balanced, and may have runout (radial variation from a true circle), as the cones may have runout on the very tips, that may appear to be asymmetrical when put on the threaded rod. (up to 0.05) This constitutes a normal condition. You are not trying to balance the threaded rod and the cones. The two bearings act as the fulcrum, and the moment arms are the distance between the bearings to the cones. The tire and wheel assembly should be as close to the center as possible, but it is not necessary as we are only balancing in one plane, and the center of gravity (heavy spot) will always come to a rest below the center of rotation(threaded rod), just like a pendulum. The miniscule indifference is the weight of each cone, and the threaded rod runout make no difference in the static balance of the ASSEMBLY as a whole.

The customer can prove this theory by balancing a complete assembly, then turning the cones and threaded shaft 180 degrees, and re-balance. The assembly will stay in the same balance as with the initial balance procedure.