Posted by FSWood on April 28, 2012 
Man, that joker is slab-sided. Ones with three B trucks have always caught my eye. Would be interesting to see the engineering on the mount for that center truck.
Posted by David Doty Sr. on April 28, 2012 
F. S. Wood In answer to your question, I believe the center trucks do not rotate on thier axis, but rather, they are on sliders that allow the wheels to move right or left. I may be wrong so don't quote me on this.
Posted by FSWood on April 29, 2012 
Sliding side to side sounds like a necessity in thinking about how curve track would be off-centerline relative to loco frame at that point. Yeah, it would be neat to see how they make that happen.
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