20-21729-1 O Scale Premier SD24 Diesel Engine w/Proto-Sound 3.0 For availability see 'Find it locally' tab $559.95Product InformationDescriptionSD24 Diesel Engine w/Proto-Sound 3.0 - New York Central (Lightening Stripe - Order From: METCA) Cab No. 3990 Roadname: New York CentralProduct Item Number: 20-21729-1Catalog: ZZ2 2022 Uncataloged ItemsProduct Line: PremierScale: O ScaleDelivery Status: Delivered: MAY 2023This product is compatible with all O Gauge 3-Rail track systems including those systems offered by Atlas and Gargraves and Lionel and Ross Custom Switches. OverviewIn 1958, GM's Electro-Motive Division took a great technological stride forward with the introduction of the turbocharged SD24. In turbocharged engines, exhaust gases are used to power a turbine that increases cylinder air pressure, thus effectively increasing horsepower. In fact, the 16-cylinder model 567 diesel that produced 1800 horsepower in the normally aspirated SD18 locomotive was upgraded to 2400 horsepower in the turbocharged SD24. Turbocharged engines also run better at varying altitudes, making them ideal for railroads that travel through changing terrain. Look on the left side of the SD24's hood for the semicircular bulge that marks the location of the turbine. The SD24s were close relatives of the popular GP-series engines. The primary difference was that SD-series (for "Special Duty") locomotives were lengthened to make room for three-axle, three-motor trucks. For a GP and an SD engine of the same horsepower, the extra wheels on an SD locomotive gave it more tractive effort at low speeds and less engine weight on each axle. For this reason, the SD24 and others in the SD series were ideally suited for secondary lines with lighter rail. Features Intricately Detailed, Durable ABS Body Die-Cast Truck Sides, Pilots and Fuel Tank Metal Chassis Metal Handrails and Horn Authentic Paint Scheme Metal Wheels, Axles and Gears (2) Remote-Controlled Proto-Couplers Prototypical Rule 17 Lighting Directionally Controlled Constant Voltage LED Headlight (2) Precision Flywheel-Equipped Motors Onboard DCC/DCS Decoder Locomotive Speed Control In Scale MPH Increments 1:48 Scale Proportions Proto-Sound 3.0 With The Digital Command System Featuring Quillable Horn With Freight Yard Proto-Effects Unit Measures: 15 3/8” x 2 5/8” x 4” Operates On O-36 Curves Diesel DCC Features F0 Head/Tail light F1 Bell F2 Horn F3 Start-up/Shut-down F4 PFA F5 Lights (except head/tail) F6 Master Volume F7 Front Coupler F8 Rear Coupler F9 Forward Signal F10 Reverse Signal F11 Grade Crossing F12 Smoke On/Off F13 Smoke Volume F14 Idle Sequence 3 F15 Idle Sequence 2 F16 Idle Sequence 1 F17 Extended Start-up F18 Extended Shut-down F19 Rev Up F20 Rev Down F21 One Shot Doppler F22 Coupler Slack F23 Coupler Close F24 Single Horn Blast F25 Engine Sounds F26 Brake Sounds F27 Cab Chatter F28 Feature Reset Find It LocallyThis product may not have shipped yet or is completely sold out. Click on the show button to see who might have it on order. Support