Gearbox details:

2 stages with 10t and 35t mod1 gears.
Gears interference fit on shaft.
Shaft material: chrom-vanadium (a 1/4" drive extension turned down to size)
Bearings: MR126 ZZ 6 X 12 X 4Mm, 6700 ZZ 10 X 15 X 4Mm
Side plates 7075t6 Aluminium 64x41x4mm
Grease : Rocol Aerospec100

The gearbox output shaft will bear no side loads as the drive wheel is supported by its own bearings.


Gearbox.jpg
gearbox1.jpg