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The Q2 locomotive was 78% more powerful than the locomotives that PRR had in service at the time, and the company claimed the Q2 could pull 125 freight cars at a speed of 50 mph (80 km/h). [5] These were an improved version of the previous Q1 class, which was a 4-6-4-4 dual-purpose engine instead of a 4-4-6-4 freight engine.
In operation, the Q2 could outperform pre-existing freight engines hauling double the tonnage of their predecessors. Furthermore, the Q2 had no problems building up steam power and was known to be a very smooth-riding engine. 26 were built at PRR's Altoona Works, and they were by far the most successful duplex type. The duplex propensity to ...
PRR Q2: Pennsylvania Railroad: 6131, 6175-6199 Altoona Works: 1941–45 Steam 4-4-6-4: 456 tonnes (503 short tons) 115,816 pounds-force (515 kN) with booster 7,987 horsepower (5,956 kW) Most powerful steam locomotive ever static tested. PRR S1: Pennsylvania Railroad: 6100 Altoona Works: 1939 Steam 6-4-4-6: 487 tonnes (537 short tons) 76,403 ...
These were both withdrawn from service by the mid-1920s. In 1942, the PRR built 123 2-10-4 "Texas" type locomotives based on C&O plans; class J now being unoccupied, it was reused for them. The PRR J1 was an improved version of its C&O counterpart with more pulling power. J1 - 2-10-4 freight locomotives. J28 - experimental 2-6-2 locomotives.
PRR's Board approved $595,000 for the construction of this experimental Class dual service locomotive on Oct. 9, 1940. it was built in March 1942.Its streamlined shrouding, according to an interview of John W. Epstein, Special Projects Manager and vice president, Raymond Loewy & Assoc., [2] was designed by Raymond Loewy, but,due to WWII, there was no publicity about it.
See also PRR locomotive classification. Pages in category "Pennsylvania Railroad locomotives" ... Pennsylvania Railroad Q2 class; R. Pennsylvania Railroad class R1; S.
The Pennsylvania Railroad's Q2 class were the only locomotives ever to use this arrangement. These were duplex locomotives , in which both sets of driving wheels were mounted in a common, rigid locomotive frame .
The PRR Q1 6130 - the only locamotive with this wheel arrangement In Whyte notation , a 4-6-4-4 is a railroad steam locomotive that has four leading wheels followed by six coupled driving wheels , a second set of four driving wheels and four trailing wheels .