This GPM MG526T/0.5M is an RC-scale motor pinion gear made from 45 steel with 26 teeth, specified for 48 pitch systems and a module of 0.5mm. The motor tooth diameter is 5mm, which matches common small electric motor shafts used in on‑road and off‑road hobby cars.
In practical terms this pinion is used to change final drive ratio or restore worn pinions without replacing the motor. Because it is 48 pitch and module 0.5mm, it meshes with compatible spur gears designed to the same standards; confirm both pitch and module before swapping parts.
Installation tips: ensure correct axial alignment and proper mesh by observing minimal backlash and avoiding excessive preload on bearings. Check that the grub screw or retention method on your motor is suitable for a 5mm motor tooth diameter, and tighten to the manufacturer’s recommended torque for your motor mount hardware.
Tuning role: swapping this 26T pinion increases top speed relative to a smaller pinion while reducing acceleration torque compared with lower tooth counts. Use incremental changes and test runs to find the balance you need for track conditions and battery/motor characteristics.
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