bron//source:
https://www.flickr.com/photos/77871011@N08/29177571111/
films:
https://www.flickr.com/photos/77871011@N08/29169201852/
Standard Lego wheels and axles on the right, ball bearings on the left.
https://www.flickr.com/photos/steampowe ... 977640130/
Two boxcars of identical weight and construction. The reddish brown car uses my previously preferred truck style of metal tubing with lubrication to cary the axle.
van bouwer//from builder:
Andrew flickr
:-o
