N Scale Logo Product Line: Athearn
20200522

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EMD SD-70



PROTOTYPE AND BACKGROUND INFO:

Continuing upon the successful SD60-series, in 1992 EMD debuted the next step in locomotive evolution with the SD70. While outwardly similar at first glance to the SD60, the D.C.-drive SD70 featured several external design refinements from the predecessor model. 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.

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. 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. Even more revolutionary was the inclusion of EMD’s patented “Radial” truck design, the HTC-R. 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.

Continuing 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. These units travelled all over North America, showing off the latest technology from EMD. Eastern giant Norfolk Southern liked what it saw, and was the first to order SD70s, but with a twist; instead of having them equipped with the increasingly popular (and soon to be standard) “M” cab, they opted for standard, or “Spartan” cabs on their initial orders. The first production SD70s, NS 2501-2506, built in 1993, were quickly followed by additional units; NS 2507-2531, also built in 1993, and NS 2532-2556, built in 1994. They could be found in a variety of assignments over the NS system, and even saw run-through service on connecting roads, such as Southern Pacific, making appearances on the West Coast.

FEATURES:
  • See-through cab windows
  • Factory installed Celcon handrails
  • 5-pole motor with precision-machined flywheels and multi-link drive train for trouble free operation
  • DCC Ready
  • Illuminated front and rear headlights
  • Nickel plated, blackened machined wheels
  • Wheel contours operate on all popular brand of track
  • Replacement parts available

EMD SD-70
Road Name Road #
Image
MSRP Our $ Part #
Illinois Central 1007
$139.98 $104.98 ATH-3068
1010 $139.98 $104.98 ATH-3069
1015 $139.98 $104.98 ATH-3070
1006 $139.98 $104.98 ATH-3099
Illinois Central 1001
$139.98 $104.98 ATH-3088
1009 $139.98 $104.98 ATH-3089
1028 $139.98 $104.98 ATH-3090
Canadian National 1039
$139.98 $104.98 ATH-3000
1004 $139.98 $104.98 ATH-3040
1009 $139.98 $104.98 ATH-3046
1037 $139.98 $104.98 ATH-3058
Conrail 2563
$139.98 $104.98 ATH-3064
3065 $139.98 $104.98 ATH-3065
3066 $139.98 $104.98 ATH-3066
2577 $139.98 $104.98 ATH-3067
Norfolk Southern 3079
$139.98 $104.98 ATH-3079
3080 $139.98 $104.98 ATH-3080
3081 $139.98 $104.98 ATH-3081
3082 $139.98 $104.98 ATH-3082
Electro-Motive Diesel 9000
$139.98 $104.98 ATH-3094
9041
$139.98 $104.98 ATH-3083
7025
$139.98 $104.98 ATH-3091
7026 $139.98 $104.98 ATH-3092
7027 $139.98 $104.98 ATH-3093
National Railway Equipment 3095
$139.98 $104.98 ATH-3095
3096 $139.98 $104.98 ATH-3096
3097 $139.98 $104.98 ATH-3097
9098 $139.98 $104.98 ATH-3098
Southern Pacific Santa Fe 7912
$139.98 $104.98 ATH-3084
7918 $139.98 $104.98 ATH-3085
7927 $139.98 $104.98 ATH-3086
7943 $139.98 $104.98 ATH-3087
Canadian National 1002
$129.98 ATH-7338
1008 $129.98 ATH-7318
1012 $129.98 ATH-7319
Conrail 2558
$129.98 ATH-7320
2560 $129.98 ATH-7321
2569 $129.98 ATH-7322
Illinois Central 1021
$129.98 ATH-7323
1025 $129.98 ATH-7324
1027 $129.98 ATH-7325
Norfolk Southern 2507
$129.98 ATH-7326
2512 $129.98 ATH-7327
2515 $129.98 ATH-7328
Northern Pacific 3800
$129.98 ATH-7329
3805 $129.98 ATH-7330
3809 $129.98 ATH-7331
Spokane, Portland & Seattle 380
$129.98 ATH-7332
382 $129.98 ATH-7333
385 $129.98 ATH-7334
Union Pacific 2199
$129.98 ATH-7335
2223 $129.98 ATH-7336
2219 $129.98 ATH-7337
EMD SD-70I
Road Name Road #
Image
MSRP Our $ Part #

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