Z70 Locomotive for OS-Railway - fully 3D-printable railway system! Arduino-controlled!

OS-Railway is a complete system of track, trains and accessories, all designed to be fully 3D-printable. The size is the same as O-scale (32mm track) but printability is prioritized over scale.

This page covers the Z70 locomotive, for track pieces see a separate page
Klick here for track: http://www.thingiverse.com/thing:2146361

Klick here for cars: http://www.thingiverse.com/thing:2152351

This locomotive was inspired by the Swedish lokomotor Z70 https://sv.wikipedia.org/wiki/Z70 but the dimensions are not strict, the wheel base has been shortened to assure that the train can cope with the rather short radius of 300mm used in my track and switch design. The body has been sculpted to pictures so it is not perfect scale either.

The aim was to create a easy-to-print locomotive that looks OK, but not a super complicated set with tons of parts. The kit includes mounting and pinion gear for using a standard RC-servo as motor. To do this you only need to pull out the potentiometer from the servo, adjust it so that it is in the middle, and then it a RC-signal will act as a dual way speed control. This is a slow but very easy method if you want to use very simple electronics or a radio control.

However, if you want better performance I recommend to use the included Arduino code, a motor controller board and a 16mm DC-motor with gearbox. You can find plenty of such motors on E-bay, or go to www.maxonmotor.com and configure a 16mm motor and gearbox. Direct drive will be too weak so you will need a gearbox.

To power the locomotive, you can either use the chassis which is prepared for batteries, or you can use the one adapted for LiPo-packs. In the first case, 4pcs AAA is used. In the case of LiPo-pack you can use a 2 cell series package (~7,2V).

Look further below for more detailed instructions!

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