Hyperflight Small Gearbox

Small planetary gearbox suitable for electric motors up to 200W.Only suitable for advanced modellers with metalworking facilities as the gearbox backplate will have to be drilled/modified to facilitate mounting the gearbox onto the motor.The 4.75:1 ratio gearbox includes a pinion for a 2mm shaft motor.
The 3.5:1 ratio gearbox includes pinions for 2mm and 3.17mm shaft motors.Gearbox body 22mm diameter.
Ourput shaft 4mm diameter
Weight 35g
4 font M2 holes on a 17.5mm diameter.