OpenRailway EMD SW1500 motorized Loco

Work in progress - gears/axles are a bit tight and barely rotate.
Needs grease and polishing after printing.
Parts/stl files are in original size, scaled it down for 24mm track in Cura before printing.
Works with N20 geared dc motor (12V 300rpm).
Parts have .scad files of their own and everything is assembled in main emd-sw1500.scad file.