Model Motors inner-driven gearbox with 5mm output shaft to fit 480 size motors with 3,2mm shaft. Fitting is M3 screws at 16mm and 19mm centres. The gearbox includes an adapter plate to fit Graupner Speed 480 motors. The VMKG gearboxes also fit Mega 16/15 and 16/25 motors.
The VMKG gearbox is all aluminium with a steel pinion gear and brass output gear. The 5mm shaft is supported in ball races.
Different pinions and gear ratio sets are available as spare parts.
After initial running in, use lithium grease on the tough cross cut gear teeth.