Yokomo YOKPG4829 48-Pitch 29T Ultra-Hard Pinion Gear  [YOKPG4829]

Compact 48P 29-Tooth Pinion

This compact, RC-scale precision pinion is intended for 48 pitch gear trains. The YOKPG4829 is manufactured for consistent tooth form and elevated material hardness so it preserves mesh stability under typical electric model loads.

Intended use: install the pinion on your motor shaft to change gear ratio, influence acceleration and top speed, and refine mesh when optimising drivetrain efficiency. It is an aftermarket component intended to replace worn or lower-hardness pinions.

Installation notes: mount on a clean motor shaft, ensure the set screw seats on a flat if present, and use correct shimming to set backlash. Verify mesh across a few low-throttle cycles with servos and ESC before final tightening. A short run-in under light load helps confirm stable engagement.

Durability and tuning guidance: the ultra-hard finish reduces wear compared with softer pinions but requires accurate alignment with the spur gear to avoid premature tooth damage. When changing tooth count to alter ratio, re-check mesh and motor timing if applicable.