35AX Engine Drive Washer compatible with O.S. Engine - OS23108000  [OS23108000]

Engine Drive Washer - 35AX Fitment

The OS23108000 35AX drive washer from O.S. Engine is an RC-scale axial spacer intended for drive assemblies that accept the 35AX washer form. It fits at the crankshaft/drive hub junction to set axial clearance and keep drive parts aligned during running.

Functionally the washer keeps a consistent gap between the drive hub and adjacent components, reducing uneven wear and helping the drivetrain operate smoothly. Fit it when rebuilding the crankshaft or replacing worn thin spacers to restore proper axial spacing.

For fitment follow standard practice: remove the drive hub, note shim order and alignment, replace the old spacer with the 35AX washer, then verify axial play. Rotate the assembly by hand to confirm smooth rotation before final assembly and engine start.

Although not classified as a tuning item, correct spacer thickness affects driveline geometry and can indirectly improve smooth running and extend component life in engine-driven RC models.