Designed for branch lines, EMD's Special Duty series debuted in 1952 with the SD7, featuring the new three-axle Flexi-Coil truck with its powered center axle. EMD's new truck not only spread the weight, but the extra traction motors provided more starting power. Responding to demand for a more powerful version, EMD replaced the SD7 with the SD9 in 1954, equipped with the new 567C prime mover that delivered 1,750 horsepower. Except for placement of the class lights, the SD9 looked almost the same as the SD7. By the time production ended in 1959, 515 SD9s were in service on over a dozen railroads. Some are still going strong after 50+ years ofservice!
 
* Limited Edition - One Time Run of These Roadnumbers!
 
* Road-Specific Detailing
 
* Available with SoundTraxx(R) Tsunami(R) Sound for DCC & Standard DC Layouts
 
* All-Wheel Drive & Electrical Pickup
 
* Machined Brass Flywheels
 
* Constant & Directional Headlights
 
* Heavy Die Cast Metal Chassis
 
* 5-Pole Skew-Wound Motor
 
* RP-25 Metal Wheels
 
* Proto MAX(TM) Magnetic Knuckle Couplers
 
Tsunami® Sound & DCC
B&O #7402
B&O #7403
Bessemer & Lake Erie #802
Bessemer & Lake Erie #803
CNW™ #300
CNW™ #301
SP™ #1427
SP™ #1430

 
Standard DC
B&O #7401
B&O #7404
Bessemer & Lake Erie #801
Bessemer & Lake Erie #802
CNW™ #300
CNW™ #301
SP™ #1436
SP™ #1441

 

 
Based on engines in service from about 1974 to 1980 with:
 
* New - Paint Scheme
 
* New Unit Numbers - Based on Renumbering to Accommodate MP15AC
 
* Short Hood Forward Operation
 
* Two Color End Handrails
 
* Standard-style Coupler Cut Lever
 
* Operating Large "Ashcan" Style Signal Light on Front
 
* New - Steam Generator with Exhaust Extension
 
* Dynamic Brakes
 
* 3 Chime Horn
 
* Whip Antenna
 
* Pilots with Footboards