The Pennsylvania Railroad's class Q2 comprised one prototype and twenty-five production duplex steam locomotives of 4-4-6-4 wheel arrangement built between 1944 and 1945. [1] [3] [4] [2]

The Q2 was credited with having developed 8,000 peak horsepower (5,966 kW). In tests, the Q2 reached 7,987 hp at 57.4 mph evaporating 16,600 US gallons (62,831 litres) of water per hour …

2 days ago · Were the Q2 frames lighter or smaller in cross-section than the J-1 frames (on those J-1 that had cast frames)? Not that weight reduction seems to have been high on the agenda …

They were the largest non-articulated locomotives ever built and the most powerful locomotives ever static tested, producing 7,987 cylinder horsepower (5,956 kW) on the PRR's static test …

The Pennsylvania Railroad's class Q2 comprised one prototype and twenty-five production duplex steam locomotives of 4-4-6-4 wheel arrangement. All were built by PRR's Altoona Works.

The production Q2 locomotives were of 4-4-6-4 arrangement; they were the largest non-articulated locomotives ever built and the most powerful locomotives ever static-tested, …

The Pennsylvania Railroad's class Q2 comprised one prototype and twenty-five production duplex steam locomotives of 4-4-6-4 wheel arrangement. They were the largest non-articulated …

Sep 30, 2021 · Great info on both the Q1 and Q2, with the latter having exceptional elevation drawings. There's a diagram of the Q1, though not nearly as nice. I own it and am very …

The Q2. The next duplex on the PRR was also their last fling with the rigid frame duplexes, the Q2. It had a 4-4-6-4 wheel arangement. This is my favorite duplex. It just has the look of …

At 115,800 lbs of tractive effort and nearly 8,000 horsepower, the Q2s were the most powerful ten-coupled steam locomotives ever produced. These monsters were the greyhounds of the …