Model Scaled N20 Geared Motor with Rotatable Shaft

Scaled version of the N20 geared motor for modelling and static display purposes. My use for this model with rotating shaft was to complete the build of the Street KART until I could acquire the motor.

The motor body, front, and back plates printed with PLA+, 0.4mm nozzle, 0.20mm layer height, 15% Grid infill, 5 perimeters, no supports or brim required. The motor body color change to black was set at 13mm.

The motor shaft printed with PLA+, 0.4mm nozzle, 0.10mm layer height, 5 perimeters , with no support or brim required.

Additional parts required are two (2) 3x6x2.5mm bearings, two (2) M2x16 button head screws. 

For assembly, dry fit motor shaft with the bearings for good fit. If it is too tight, sand or file the shaft to a small amount for snug fitment. Press one (1) bearing into the motor body, followed by the back plate. Press the other bearing into the front plate with needle nose pliers. Insert the short side of the motor shaft into the motor body bearing, then slide the front plate bearing assembly on the other side of the motor shaft. Insert the two (2) M2 screws from the motor body end and thread into the front plate standoffs. If the screw feels tight threading in, try chasing the holes with appropriate size drill first. While tightening the screws, it would be good to hold the standoff with needle nose pliers to avoid twisting and separating the standoff from the front plate.

The two mounting holes should fit a M1.6 screw, same as the real version. If a M1.6 screw is hard to thread, clean the holes with the appropriate drill as required. 

The Street Kart makes for either a functional RC kart or static model fun to build. https://3dlabprint.com/shop/printed-racers-street-kart/