You put a shag rug load in the machine and it would spin at full speed (515 rpm) even with a less than perfectly balanced load before going into the dry portion of the cycle because it had a suspension system with springs and shock absorbers which Bendix patented. Other first generation combos spun at speeds in the 200 rpm range and had to have some semblance of a balanced load or the machine would be triggered to stop trying to spin and go into a redistribution tumble (or it would walk across the floor) because they could not have a suspension system because of patent infringement. The owner of Bendix, AVCO ( Aviation Corporation) held the patent rights that prevented any other manufacturer from using a suspension system. Yes, it allowed them to have a wonderful machine, but they destroyed the industry because the other manufacturer's combos soon gave the whole product a black eye. Bendix/Philco never had the sales networks of major brands and sold only a minority of the combos sold. Few people bought a second combo. AVCO/Bendix really poisoned the well for what could have been a wonderful product.