> "How do you get square driver tires on round wheels"?
> John Armstrong
The tread is exactly 90 degrees to the flange. The tread is flat and perfectly
horizontal and parallel to the ties. The is no small filet radius between the
tread and the flange. Not criticizing, just explaining. With a tapered tread
the loco tends to keep itself centered on the track and not wander. With a
small radius, the wheels tend to NOT pick points. It is the cross section of
the tread that is square. The other view shows a circle. Ed Loizeaux
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