During the immediate post-war era, merger between the Pennsylvania and Norfolk & Western seemed imminent. Especially since the stakeholders in both roads began to call for more radical changes in the former company. To that end, Martin Clement began working more on numerous innovations in terms of customer service, improving the yards and right-of-ways, and more that came later under his appointees.
The PRR remained a proud operator of steamers for the time being, but saw that many of its locomotives were old. While it did have plenty of locomotives on hand, many had been built in the 1910s and early 20s. The railroad had two options: Rebuild the fleet and try to keep them going as long as possible, or retire the oldest ones and replace them with new engines that were capable of receiving modern upgrades from both Altoona and Roanoke. The PRR chose the latter and started reconstruction in 1947. With both Altoona and Roanoke under their belt, they moved ahead and started preliminary design drafts. Roanoke was assigned the task of taking the K4, L1 and H class designs and redesigning them with modern steam technology that the N&W had used on their engines. Roller bearings, self-lubricating systems, automatic stokers and better steaming capabilities all went into the models. But what was also added was the Kylchap Exhuast Systems created by Andre Chapelon and used by Lima engines. The end result was that in 1949, the first new K6 Pacific, L3 Mikado, and H11 Consolidation class locomotives were released from Roanoke. The L3 having been called such since the L2 had once been taken by a small amount of USRA Mikados which the Pennsy had gotten in 1919 for use on a subsidiary.
The K6 and L3s were basically identical to their K4 and L1 predecessors but were reclassed as such to identify that they were newer and modernized versions. However, they wee also different from their cousins in that they had 12-wheeled tenders which allowed for larger fuel and water capacities. The H11 on the other hand incorporated elements from several previous H classes as well as N&W’s practices and was a completely new engine all around. Meanwhile, many other classes such as the G5, K4 and L1 classes had members that were rebuilt with the modern equipments that were provided from Roanoke. Other and often smaller engines, like the last few H6sb Consolidations, were sold off to other companies. Many of those engines that were sold off rather than retained often found new leases on life over numerous shortline railroads. For example, several of the the L1 Mikados were sold off to the Kentucky and Tennessee Railway in Kentucky, the Trona Railway in California, and other shortlines where they served for several more years.
In most cases cases, the PRR preferred their locomotives over the N&W's. Using the K4/K6 Pacifics and E6 Atlantics for most local and commuter passenger trains, The H11 Consolidations and L3 Mikados for local freights, the R3 4-8-4 "Keystones" and T1 4-4-4-4 "Duplexes" in fast passenger service, and the M1s and J1s for mainline trains. But the N&W knew if it played its cards right, they could show the men at the PRR how good their engines actually were. In the event of merger, they would want to show the PRR their worthiness, and would send them samples of their A, J and Y6 classes. The J's would be used across the system, best showing off its skills on the Ft. Wayne Division by reaching 110-120 MPH. They were considered to be both on par and better than PRR's own R3 and T1 classes in various respects, but were still not considered the best locomotives for use over Horseshoe Curve.
A photograph shows the now famous J-Class 611 leading The Powhatan Arrow to St. Louis over the PRR's Panhandle line somewhere near Terre Hautte, Indiana. The extra water car suggests it was taken after 1947, as that was when the PRR ordered the N&W to build thousands of them for use on their steam engines as a way to reduce water needs. During the final days of steam on the Pennsylvania Empire, it was common to see N&W, RF&P, and PRR power mingle among all three roads.
The A and Y classes fared just as good, if not better. The A's were used all across the system as well, showing off their 4 cylinder abilities and putting the Q2 duplexes to shame in both power and service range. Both the A and Y6 classes gave an exceptional demonstration on Horseshoe Curve and over the Pennsylvania hills. With just one engine on the front and one on the rear, the Y6s were able to handle trains that would probably require at least three engines, if not two separate trains with two engines each, while still maintaining a decent rate of speed. The As handled trains that would normally require two M1s at the same speed. With this in mind, PRR management decided the best course of action would be to purchase copies of the A and Y class. These would become the FG1 and HH2 class respectively. Powerful machines built by the Roanoke Shops as a fusion of the A Class and numerous staples of PRR Steam. The N&W J class, while exceptional, remained only on the PRR Lines West and the N&W proper. Occasionally they would make runs up to Harrisburg and even Philadelphia if needed. But only 6 more, #614-619 were built by the N&W’s shops for use on fast passenger trains.
A Trainz model of the PRR FG-1. Which was designed from the N&W A Class to serve as a mixed traffic articulated. The engine shown here, #6647, is now on display on Horseshoe Curve near Altoona.
Regardless of one's feelings on the PRR/N&W Steamers, none could truly compare to what Lima worked on with Team Chapelon.
OOC: Special thanks to
@Republic of Michigan for his notes on PRR Steam.