The two pieces of the frame pivot in the center. The carbody is rigid. It sits on the frame with "feet" that ride in slots so the frame can rotate and move under the carbody. There's a good picture of this out there somewhere.... I'll try to find it.
-Don (Random stuff, mostly about trains - what else? http://blerfblog.blogspot.com/)
I see it mentioned in PRR GG1 reference material that the frame is articulated which allows it to negotiate tighter curves than it normally could. However, what does this mean, is there a pivot in the center? How does the carbody pivot?
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