Williams O Gauge Pennsylvania Railroad 6-8-6 S-2 Turbine w 12 Wheel Tender

The Williams 40498 is an O-scale model train manufactured by Williams Electric Trains (later Williams by Bachmann). It is a model of the Pennsylvania Railroad (PRR) 6-8-6 S-2 Turbine Steam Locomotive (Road Number #681) accompanied by a 12-wheel tender. Fully Tested and Serviced. Appears unrun except for our tests. Includes original box, packaging, paperwork. See pitcures an video for details. Model Specifications & FeaturesScale/Era: O Gauge ModernLocomotive Type: S-2 Steam Turbine (often referenced as a "J" Class or S-2 variant in legacy catalog text) Minimum Curve Compatibility: Designed to navigate O-27 curves. Physical Dimensions: Measures 19.5 inches long and 3.75 inches high. Mechanical & Electrical System: Features a single motor powering 6 drive wheels with 2 traction tires, steel-rimmed wheels, spoked drivers, and an electronic 6-amp reverse board.Audio & Special Effects: Equipped with a True Blast II digital whistle and bell sound system and a built-in smoke unit. The Pennsylvania Railroad (PRR) Class S2 (Road Number #6200) was an experimental prototype designed to save the dominance of steam power against the fast-rising threat of diesel locomotives. Delivered in September 1944, it remains famous as the largest, heaviest, and fastest direct-drive steam turbine locomotive ever built. Despite its revolutionary engineering, it became one of railroading’s most spectacular, expensive failures. Instead of using traditional pistons and cylinders that slammed back and forth, steam was blasted directly into a 6,900-horsepower Westinghouse forward turbine spinning at 9,000 RPM. This turbine was geared directly to the center driving axles with a fixed 18.5:1 ratio, providing exceptionally smooth torque. It lacked the traditional "chuff-chuff" sound of steam engines, producing a unique jet-like whoosh. While the S2 was an absolute powerhouse at sustained high speeds (efficiently cruising at 70 to 100+ mph with prestigious passenger trains like the Broadway Limited), it destroyed itself during normal railroad operations.