VMGM gearboxes 4.64:1 The unique VMGM range of planetary gearboxes are suitable for use with the MiniAC 1215/xx brushless motors or standard Speed 400 size motors. The VMGM gearbox can also be used with Speed 480 motors using the adapter available as an option. The VMKG gearboxes are designed and manufactured using CAD/CAM technology, and our modern machines guarantee maximum accuracy during manufacture. The main gearbox body and planet gear carrier are machined from dural, and eloxal coated. The pinion and planet gears are machined from steel for long service life. The hardened steel output shaft is 4mm diameter. The planet gear and output shaft assembly are mounted in two ball bearings to provide long service life and a low friction drive. VMGM gearboxes are suitable for power of up to 250W. The motor and gearbox assembly are very compact, and can be mounted directly to a bulkhead using the threaded holes at the front of the gearbox. Available gear ratios: 3,86:1, 4,64:1, 6,00:1 Weight 27g. This type of gearboxes required break-in period about 30-60min half loaded and relube.