Can anyone shed light on the function of the steam exhaust pipe running toward the rear of the locomotive? Note: there are two pipes from this right rear cylinder, one to the smokebox for draft, and one that goes toward rear of locomotive in front of right rear driver. What is the function of this rearward facing steam exhaust pipe? Anyone with a blueprint, drawing, or photo of engine under construction may be able to determine where this pipe is going. Appreciate any ideas.
Disregard the above post. It is not correct in that pipes identified as steam exhaust are in reality steam delivery pipes. The rearward facing pipe at the rear engine on the right side is the high pressure steam supply that runs forward thru the front engine frame to supply
steam to the forward cylinders. This design only required a swivel joint above and on the center line of the articulating pin to furnish high pressure steam thru a pipe that ran horizontally thru the front engine frame. Using this design Lima Engineers eliminated the need and the maintainance for two high pressure steam supply pipes that were required to change length as the front locomotive negoitated curves as other manufactures of articulated engine did. This fact can be substantiated by Lima photos of the locomotive class under construction. Want to establish this fact and not leave incorrect information on this forum.