Speed Gearbox

Printed like the Original in 0.2 and in PLA. Infill Standard 15%. No issues with Standard Gear box so far. 

Fotos show the build process:

Required Hardware:

N20 Motor

5 M1,6 4mm screws for mounting it to Chassis (used for all underneath chassis)

3 M2 Nuts 

1 M2 Machine Screw with min 15mm lenght

2 Ballbearings 682ZZ  2 x 5 x 2 mm (used in chassis for Hubs)

As standard Motormount Gearbox wasn't very fast I modified my Model to get a better Final Drive Ratio. 

Gives better clearance to the Spool outdrives. 

Motor sith 3 mm Higher and Pinion protrudes a bit to the Front. No issue with my Model but could cause issues with models with very small or low overhang.