Atlas HO SD-24 & 26 Locomotive

With over 220 units produced by EMD between July 1958 and March 1963, the SD-24 locomotive generated a total of 2,400 hp with its turbocharged 567D-3 prime mover and C-C wheel arrangement.

The majority of SD-24s produced were purchased by four roads: Chicago Burlington & Quincy, Santa Fe, Southern, and Union Pacific. Atlas’ HO scale model features details unique to each road name:

Burlington (CB&Q): High nose, single-chime air horn on short hood, Gyra-light on short hood (non-operating), winterization hatch

Santa Fe: Low nose, 3-chime horn mounted on left side of hood behind cab

Southern: High nose, 5-chime horn mounted on cab, bell detail on short hood

Union Pacific: Low nose, 3-chime horn mounted between 2nd and 3rd radiator fans, winterization hatch

Features:

• Separately-applied roof piping detail
• Golden-white LEDs
• Realistic die-cast underframe
• Five-pole skewed armature motor with dual flywheels for optimum performance at all speeds
• Directional lighting
• Painted crew figures
• Separately-installed scale windshield wipers, metal grab irons and fine scale handrails
• Highly detailed coupler cut bars
• Multiple unit hoses and trainline hoses
• Piping on trucks

Atlas Master® Silver Series Additional Features (2025+):

• NMRA 21-pin plug for DCC (Decoder-ready)

Gold models (2025+) are equipped with ESU LokSound. ESU Loksound Functionality Features:

• ESU LokSound decoder, supporting all DCC programming modes.
  
• Flexible mapping of function keys F0 to F31.
  
• Follows all NMRA DCC standards and recommended practices.
  
• Over 20 sound effects are available, including engine start-up and shutdown, prime mover sounds through all eight notches, bell, air horn, air compressor and more

Atlas Master® Silver Series Additional Features (Pre-2025):

• NMRA 8-pin plug for DCC (Decoder-ready)

Atlas Master® Gold Series Additional Features (Pre-2025):

• Electronic Dual-Mode® Decoder (e-DMD) that allows your locomotive to run in DCC or traditional DC

QSI® Quantum System™ Features Including:
(Atlas Master Series Gold locomotives only)

• Dual speaker system
• Authentic diesel engine sounds
• Squealing brakes
• Doppler effect
• Air let-off in neutral
• Coupler impact sounds when operated with DCC
• Helper mode that mutes the whistle and bell for double heading
• And more!

Note: Due to the higher starting voltage required to operate the sound system, it is not possible to MU a non-sound-equipped loco in DC (analog) mode.

AccuMate® couplers are made under license from AccuRail, Inc.

Body Style 1: Low Nose
Body Style 2: High Nose

AccuMate® couplers are made under license from AccuRail, Inc.

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