64-Pitch 38T Pinion - Yokomo YOKPG6438 for Electric RC  [YOKPG6438]

What the 64-Pitch 38T Pinion Does

The Yokomo YOKPG6438 is a 64-pitch, 38-tooth pinion created for electric RC motor gearing. It is used to alter final drive ratios and refine how the drivetrain responds across different surfaces and loads.

Fit this pinion where gearbox specifications require 64-pitch gears; it fits a variety of chassis and motor types. Prior to installation, verify that the pinion pitch and tooth count match your spur and gearbox, and confirm the motor shaft diameter and set screw type to ensure proper fitment.

Installation tips: position the pinion correctly on the motor shaft, set the mesh clearance to avoid premature wear, and secure fasteners to the recommended torque. Once fitted, rotate the drivetrain manually to check for smooth engagement and to detect any binding or excessive backlash.

Tuning advice: moving to a 38T raises the final ratio compared with smaller pinions, which changes acceleration and top speed depending on spur size; make stepwise changes and evaluate with test runs.