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#Athearn blue box decoder direct to trucks or frame full#

This design, which made its debut under EMD Demo SD60 #3, replaced the venerable HT-C truck, and is unique in its ability to shift, or “steer”, the wheelsets laterally through curves, resulting in greatly reduced wheelset and track wear, and coupled with the new D70TR traction motors and EM2000 microprocessor, greatly improved adhesion.Ĭontinuing with previous practice, EMD built a set of Demonstrator SD70Ms, EMD 7000-7002, all equipped with the North American safety-cab (hence the “M” in their model designation), and decked out in an attractive gray, silver, and burgundy paint scheme. Even more revolutionary was the inclusion of EMD’s patented “Radial” truck design, the HTC-R. New D70TR traction motors were standard, and controlling all of this power and locomotive function was EMD’s new EM2000 microprocessor, which boasted more memory, twice the processing speed, and improved locomotive self-diagnostic capabilities compared to the processor suite used in the SD60. Internally, the SD70 boasted improvements as well a 16-710GB prime mover, rated at 4,000hp, was coupled to a new alternator design, the AR20. Battery boxes were relocated to the left-hand side walkway immediately behind the cab, a large, boxy forward traction motor blower housing replaced the angular version used on SD60s, the raised walkway duct on the left hand walkway was eliminated, and an intake for the rear traction motor blower on the left hand side of the carbody, directly under the rear radiator intake grill, was added. While outwardly similar at first glance to the SD60M, the D.C.-drive SD70M featured several external design refinements from the predecessor model. Many functions can be altered via Configuration Value (CV) changesĬontinuing upon the successful SD60-series, in 1992 EMD debuted the next step in locomotive evolution with the SD70-series.Program a multiple unit (MU) lashup with lead unit only horn, bell, and lights.All functions NMRA compatible in DCC mode.Engine, horn, and bell sounds work in DC.

#Athearn blue box decoder direct to trucks or frame full#

Full DCC functions available when operated in DCC mode.

Onboard DCC decoder with SoundTraxx Tsunami2 sound.

Packaging securely holds model for safe storage.

Heavy die-cast frame for greater traction and more pulling power.

Wheels with RP25 contours operate on all popular brands of track.

All-wheel electrical pickup provides reliable current flow.

All-wheel drive with precision gears for smooth & quiet operation.

Genesis driveline with 5-pole skew wound motor, precision machined flywheels, and multi-link drivetrain.

McHenry scale knuckle couplers - Kadee compatible.

Detailed fuel tank with fuel fillers, fuel gauges, & breather pipes.

Fine-scale Celcon handrails for scale appearance.

Accurately painted and printed paint schemes.

Scaled from prototype resources including drawings, field measurements, photographs, and more.

DCC-ready features Quick Plug™ plug-and-play technology with 21-pin NEM connector.

This version depicts the “as-built” appearance. Most notably, they were seen leased to SP and UP in their early years and put through just about any service the railroads could throw at them.

UP 4884 was used in 2014 to pilot UP Steam Big Boy 4014 to Cheyenne,Wyomingĭelivered in 1995 as part of EMD’s lease fleet, these units roamed on many different railroad’s before being sold to CSX in the early 2000’s.