Proj_Fawkes Beta: Original bogie design is too costly and has too much friction from the new expensive O-ring wheels on Technic pins. 1x3 "jumper" plates capture the look of Lego 9v motor
LEGO PART 4025 Tile Special 6 x 4 with Beveled Edges and 5mm Pin (Train Bogie Plate) | Rebrickable - Build with LEGO