Description
133-125-1 CNC Machined Clutch System Stack OWB Reversed - Set
Including one-way bearing for use with generator option.
Fits for Zenoah, TRM, BH-Hanson, OBR, RC Style Gas engines.
Ensures perfect concentricity of the clutch system.
This clutch stack is designed to eliminate all causes of runout of the original Zenoa clutch which can have an axial and radial runout of up to 0.15" (0.38mm). This runout causes heavy vibrations which normally result in broken screws, broken aluminum parts and in disconneting electrical connectos or results in broken wires.
- The new MA clutch stack is based on a high precise clutch hub.
- The studs which hold the clutch shoes are pre assembled at the hub. They are not centered by the thread - they are centered by a precise cylinder at the hub for each stud. This eleminates and deviation caused by threads.
- The upper part which holds the one way bearing for top start is also positioned by the studs and precise bores. So there is no thread involved in centering this part also.
The resul is a precise true running clutch stack. But the clutch stack can only be as precise as the crank is. So please check the crank for true running before installing the clutch system.