The Pennsylvania Railroad class Q1, #6130, was a single experimental steam locomotive designed for dual service. The locomotive entered service in 1942, and retired in 1949 after accumulating a relatively low 165,000 service miles.

PRR Q-1 America's First Freight Duplex. The 1942-built Q1 was the PRR's first freight Duplex prototype. It was built with huge 77" drivers and streamlining. One of the handsomest streamlined engines built at that time.

The Pennsylvania Railroad Class Q1 comprised of only one experimental 4-6-4-4 duplex drive steam locomotive. Used for freight on the PRR. Unlike the later Q2 duplex design, the Q1's pair of rear cylinders were located under the firebox.

The Pennsylvania Railroad class Q1, No. 6130, was a single experimental steam locomotive designed for dual service. The locomotive was built by the PRR's Altoona Works, entered service in 1942, and retired in 1949.

The Q1's drivers were tall for a freight engine. Its rear two cylinders were reversed under the cab (rods moving forward) to drive the two axles of the second group on the rigid frame. The cylinders sizes and strokes were unalike, which except for compounds, is so unusual as to be unique.

The unusual PRR Q1 with its opposite facing cylinders and iconic streamlining. The PRR also desired to apply the duplex principle to freight haulage, and the Q1 was the first experiment in that direction. It was a 4-6-4-4 fast freight locomotive, delivered in May 1942.

The Q1. The next experimental locomotive on the PRR was the Q1 with a wheel arrangement of 4-6-4-4. The PRR was not the first railroad to come up with the idea of an opposing cylinder arrangement. The B&O was the first with this idea with their George H. Harrison 4-4-4-4.

The PRR Q1 is a NJCB early Korean brass made in 1979(?). The Q2 and J1 are BLI run of mill with subpar Paragon decoders. These are the largest and most power...

Feb 29, 2024 · This leads me to ask if one of the serious PRR historians can confirm something I’ve only seen in one source. Clessie Cummins, in his biography, mentions that there was serious interest at PRR in internal-combustion power, both small and the promise of large, up until 1927.

Jan 23, 2025 · You do not want to model the rear ‘engine’ of the Q1 with its convoluted external steam piping and backpedaling cylinders rigger around the firebox throat. The Q2 was fully successful in its ‘intended’ role: power to supply priority …