Yokomo YOKPG4837 pinion gear 48 Pitch 37T super hard precision pinion gear  [YOKPG4837]

48 Pitch 37T Pinion for RC drivetrains

This Yokomo YOKPG4837 pinion is an RC-scale gear intended for 48 pitch systems, featuring 37 teeth and a super hard precision finish. As a replacement or tuning pinion, it serves the specific role of adjusting gear ratios between the motor and spur gear to alter acceleration, top speed balance, and motor load within hobby electric models.

Material and treatment prioritize wear resistance under typical hobby loads, so the pinion is best used with matched 48 pitch spur gears and properly sized motor shafts or adapters. Maintain correct gear mesh and inspect for burrs or damage before use; precise mesh reduces noise and helps protect both pinion and spur gear over repeated runs.

Installation notes: ensure the motor shaft seating and set-screw engagement are secure, use threadlocker on steel set-screws where applicable, and re-check mesh after a brief run-in period. When changing pinion tooth counts, keep track of effective gear ratio changes and monitor ESC and motor temperatures during initial tests to prevent overheating in tightly geared setups.