Kyosho LA427-76 - Spur Gear (48P-76T) for LAZER ZX7.5  [KY-LA427-76]

Spur gear for LAZER ZX7.5

This Kyosho LA427-76 spur gear is an RC-scale replacement part specified as 48P with 76 teeth, intended for use with LAZER ZX7.5 compatible setups. The article focuses on fit, role in the drivetrain, and practical notes for installation and tuning without introducing unverified specifications.

Functionally, a spur gear of this tooth count changes overall gear ratio and mesh characteristics. Installers typically check pinion-to-spur engagement and axial alignment to avoid premature wear; correct mesh and secure fastening are the main factors that affect noise and efficiency.

When replacing the spur gear: confirm shaft fit and that the pinion gear matches 48-pitch specifications, verify the gearbox retains proper bearing support, and inspect surrounding components such as the gearbox housing and any shims used to set mesh. Minor adjustments to mesh and shim thickness can alter acceleration and top speed characteristics in small, predictable ways.

Maintenance advice: inspect teeth for chipping or uneven wear, ensure gear faces are clean of debris, and check that any set screws or fastening methods are torqued to recommended values for your chassis to prevent slippage during use.