PROTOTYPE SPECIFIC INFORMATION
In order to meet stricter diesel locomotive emissions standards imposed by
EPATier II regulations, EMD modified the SD70MAC to create the SD70ACe
and SD70M-2. Each model is powered by a 16-cylinder, 4300-horsepower
diesel engine. On the SD70M-2, the prime mover drives an alternator and
producesAC current that is rectified to DC current, which powers the traction
motors. On the SD70ACe, the DC current is then “chopped” back into AC to
power the traction motors.
Much of the external design is based on the SD90 series locomotives. Similar features include the full height nose door and rectangular windshields, the
large flared radiators with two fans, and the positioning of the dynamic brake
equipment at the rear of the long hood. In addition, the inverters were moved
from inside the long hood to a box on the walkway behind the fireman’s side
of the cab.
SD70ACe SERIES LOCOMOTIVE FEATURES:
• Flexible rubber trainline hose • Flexible rubber MU hoses
• Etched see-through steps • Lift rings
• Lit Number Boards & Truck Lights • Sander lines
• Minimum radius: 18” — Recommended radius: 22”
GENESIS DIESEL LOCOMOTIVE FEATURES:
• Coupler cut levers • MU hoses
• Trainline hose • See-through cab windows
• Full cab interior • Walkway tread
• Windshield wipers • Wire grab irons
• DCC-ready features Quick Plug™ plug-and-play technology with 21-pin
NEM connector
• Fine-scale Celcon handrails for scale appearance
• Detailed fuel tank with fuel fillers, fuel gauges, breather pipes, and
retention tanks
• Body-mounted McHenry® operating scale knuckle couplers
• Genesis driveline with 5-pole skew wound motor, precision machined
flywheels, and multi-link drivetrain for trouble free operation
• Eight-wheel drive with precision gears for smooth and quiet operation
• All-wheel electrical pickup provides reliable current flow
• Wheels with RP25 contours operate on all popular brands of track
• LED Lighting for trouble free operation
• Heavy die-cast frame for greater traction and more pulling power
• Scaled from prototype resources including drawings, field
measurements, photographs, and more
• Accurately-painted and –printed paint schemes
• Fully-assembled and ready-to-run
• Packaging securely holds the model for safe storage
SOUND-EQUIPPED MODELS ALSO FEATURE
• Onboard DCC decoder with SoundTraxx Tsunami2 sound
• Dual cube speakers for optimal sound quality
• Sound units operate in both DC and DCC
• Full DCC functions available when operated in DCC mode
• Engine, horn, and bell sounds work in DC
• All functions NMRA compatible in DCC mode
• Precision slow speed control
• Program a multiple unit (MU) lashup with lead unit only horn, bell, and lights
• Many functions can be altered via Configuration Value (CV) changes
• CV chart included in the box
MRL FEATURES:
• Lit Number Boards • Truck lights
• Nose-mounted headlight • Early Brake wheel
• As-delivered scheme
In 2005, MRL ordered 16 SD70ACe’s from EMD to help replace the aging fleet of their older EMD power. They were painted at CEECO in Tacoma WA
and placed into service shortly after
