82-Tooth 48-Pitch Spur Gear for Ratio Tuning - YOKSG4882 by Yokomo  [YOKSG4882]

48-pitch spur for ratio adjustments

This is an R/C-scale spur gear sold under the Yokomo part number YOKSG4882, defined by its 48 pitch geometry and 82 teeth count. It is intended as a direct replacement or upgrade item for hobby 48-pitch drivetrains where an 82-tooth spur is required to achieve specific gear ratios. The description below focuses on compatibility considerations, fitting notes, and how the part is used when tuning an R/C model's drivetrain.

Compatibility: the item is specified as a 48 pitch, 82-tooth spur gear, so it matches any R/C setup that uses standard 48-pitch gearing. Before installation confirm tooth count and pitch against your existing pinion and gearbox dimensions; mismatched pitch or tooth counts can cause premature wear or noisy engagement. The listing provides the gear form factor but does not declare chassis-specific fitment, so check your model's existing spur dimensions and mounting method prior to purchase.

Installation tips: when fitting the spur gear, ensure the motor pinion meshes cleanly across the gear face with correct backlash and parallel shaft alignment. Set backlash by adjusting motor position or gearbox mounts until a smooth, even contact pattern appears across several teeth, then secure motor and recheck. Use proper thread locking and verify set-screw engagement if the gear mounts to a hub or shaft, and rotate the drivetrain by hand after installation to confirm no binding.

Tuning role: changing to an 82-tooth spur alters the overall gear ratio, trading top speed for increased acceleration and motor load depending on pinion size. Use incremental pinion changes together with this spur to reach the desired balance between acceleration, motor temperature, and battery runtime. Monitor motor and ESC temperatures during test runs after any major gear change.