No, it’s an entirely new design with nothing in common with the locomotives of the past, as [Terrier55Stepney] tells us in the video below the break. Gone is the huge boiler and reciprocating ...

Further expansions to the design included four "triplex" locomotives - three Erie ... 2-6-6-2 Mallets used a hinge for both the frame and boiler. Meanwhile, the Pennsylvania Railroad went the ...