Lionel pw-671 classic
PENNSYLVANIA RAILROAD S2 STEAM TURBINE
|The 671 was Lionel's S2 6-8-6 Turbine model. In 1946, the 671 was the first Lionel engine (along with the O27 #2020) to have a smoke generator. It came with a bunch of different tenders over the years, some of which included the 671W, 2466W and 6466W. The designation "Classic" in our system means that the engine and tender may not be an exact match from the same year. There was only one prototype S2 on the Pennsylvania Railroad. #6200 was designed in a collaborative effort between the PRR in-house engineers and those at Westinghouse and Baldwin. It was delivered, ready to run, in 1944. It was revolutionary because it used a steam-powered turbine (like the ones found in steam-driven ships and power plants) to propel gears connected to the drivers instead of the conventional piston method on all other steam locos. It had a second, smaller turbine for reversing up to 22 mph. It was surmised that this new system would distribute the power to the drivers more evenly and with more fuel efficiency. In reality, World War II was the design's undoing. Originally intended to be a 4-8-4, a shortage ofpremium metals due to war rationing meant that heavier materials had to be used. The 6-8-6 wheel arrangement had to be used instead to support the heavier engine. But all of the extra weight killed the fuel efficiency, especially at lower speeds. The clear advantages of diesels began to manifest themselves once World War II ended (especially considering the coal shortage caused by government price freezes intended to combat Postwar inflation), and #6200 was withdrawn from service in 1949. As for the 671, it featured one powerful, Pullmor motor, a three-position electronic reverse unit, headlight, wire hand rails running the length of the boiler, a PRR Keystone on the front nose with the number 6200, an operating smoke unit, and whistle in the tender.
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