Inventory Status: Accepting Pre-Orders
Description
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Alco introduced the S-4 locomotive in 1950. The S-4, like the earlier S-2, was a 1000 horsepower switcher. Nearly 800 units were built for North American (Alco) and Canadian (by Alco’s Canadian subsidiary Montreal Locomotive Works) railroads between 1947 and 1956.
The primary spotting difference between the S-2 and the S-4 can be noted in the trucks. The S-2 has Blunt trucks, while the S-4 has AAR-style trucks. The versatility of the S-2’s and S-4’s was evidenced by their service in mainline railroads, shortlines, and industrial switching operations.
The S-4, along with the S-2, became one of ALCO’s most successful diesel switchers, helping railroads transition from steam to diesel. Its rugged design and turbocharged engine made it a favorite for heavy switching duties. Canadian railroads were significant buyers, thanks to MLW production.
Many units remained in service for decades, and several are preserved or still operating on short lines and tourist railroads today.
Tech Specs
xFeatures:
• Scaled from actual prototype measurements
• 2 cab variations - riveted or welded
• Option for horizontal or vertical radiator shutters
• Fine scale handrails
• Separately-applied coupler cut levers, air hoses, piping, etc.
• Directional LED lighting (includes cab rear headlight)
• Die-cast hood & chassis for improved pulling performance
• Dual-flywheels for maximum performance at all speeds
• Factory-equipped with AccuMate® knuckle couplers
• Exceptional painting and printing
• Atlas Master® Gold version features ESU LokSound Decoder DCC Operation Features (GOLD LOCOMOTIVES ONLY
• Supports all DCC-programming modes
• DCC includes RailCom and RailComPlus, with 14, 28 or 128 speed steps and with 2-digit and 4-digit addressing.
• Flexible mapping of function keys F0 to F28.
• A total of 6 DCC function outputs are available, all can be function mapped (disable, brightness, light effects) individually
• Follows all NMRA DCC standards and recommended practices. ESU LokSound Features (GOLD LOCOMOTIVES ONLY):
• Over 20 sound effects are available, including engine start-up and shutdown, prime mover sounds through all eight notches, bell, air horn, air compressor, dynamic brakes and more.
• There are up to 16 user-selectable horns, 2 user-selectable bells, and 2 user-selectable synchronized brake squeals.
• Manual and Automatic Notching modes with the ability to change modes ”on the fly” are provided for true realism.
• Equipped with ESU’s Exclusive “Full Throttle” features for ultimate realism in prototype running.
• Scaled from actual prototype measurements
• 2 cab variations - riveted or welded
• Option for horizontal or vertical radiator shutters
• Fine scale handrails
• Separately-applied coupler cut levers, air hoses, piping, etc.
• Directional LED lighting (includes cab rear headlight)
• Die-cast hood & chassis for improved pulling performance
• Dual-flywheels for maximum performance at all speeds
• Factory-equipped with AccuMate® knuckle couplers
• Exceptional painting and printing
• Atlas Master® Gold version features ESU LokSound Decoder DCC Operation Features (GOLD LOCOMOTIVES ONLY
• Supports all DCC-programming modes
• DCC includes RailCom and RailComPlus, with 14, 28 or 128 speed steps and with 2-digit and 4-digit addressing.
• Flexible mapping of function keys F0 to F28.
• A total of 6 DCC function outputs are available, all can be function mapped (disable, brightness, light effects) individually
• Follows all NMRA DCC standards and recommended practices. ESU LokSound Features (GOLD LOCOMOTIVES ONLY):
• Over 20 sound effects are available, including engine start-up and shutdown, prime mover sounds through all eight notches, bell, air horn, air compressor, dynamic brakes and more.
• There are up to 16 user-selectable horns, 2 user-selectable bells, and 2 user-selectable synchronized brake squeals.
• Manual and Automatic Notching modes with the ability to change modes ”on the fly” are provided for true realism.
• Equipped with ESU’s Exclusive “Full Throttle” features for ultimate realism in prototype running.
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