Join Date: Sep 2000
Location: Oklahoma City, OK
Gear sets are hunting, non-hunting and partial non-hunting depending on the ratio. Of these I understand two briefly as:
Hunting. A set of hypoid gears whose ratio is not evenly divisible. Example: 3.55 As the ring gear rotates, the pinion passes every tooth on the ring gear resulting in an even wear pattern around the entire ring.
Non-hunting. A set of hypoid gears whose ration is evenly divisible. Example: 3.25 As the ring gear rotates, the pinion teeth only contact a fraction of the ring gear teeth as the ring rotates. This happens because the teeth match up for each rotation and hence produce several wear patterns on the ring. These have to be indexed before disassembly since elsewise the lack of pattern match causes excess wear and tear when set is reassembled. Note well the initial pattern on the pinion/ring no longer matches the pattern on the pinion/ring when not indexed; hence a new wear pattern must evolve and this causes whining, noise and early failure of the set.