Atlas N SD-7 & SD-9 Locomotives

The Atlas Classic N Scale SD-7 Locomotive is based on the prototype manufactured by EMD from February 1952 to November 1953. Utilizing a 1,500 hp engine and a longer underframe than the GP-7, the SD-7 was the first locomotive to use EMD's Flexicoil truck.

Built by EMD between 1954 and 1959, the SD-9 6-axle road switchers produced 1,750 HP and were used primarily for freight service throughout the US, both on main and secondary lines. Many SD-9 locomotives are still in service today, serving as road switchers for shortline & industrial railroads, and as yard switchers for major "Class 1" lines.

Features (2021 on):

  • Powered low friction drive
  • Blackened metal wheels
  • Dual brass flywheels
  • Directional lighting
  • Golden-white LEDs
  • Body-mounted AccuMate® couplers

Atlas Master™ Series Silver Additional Features:

  • Atlas Silver Sound Ready models are equipped
    with a speaker for easy conversion to sound with the
    addition of a decoder.

DCC Operation Features (GOLD LOCOMOTIVES ONLY)

  • Supports all DCC-programming modes
  • DCC includes RailCom and RailComPlus, with 14, 28 or 128 speed steps and with 2-digit and 4-digit addressing.
  • Flexible mapping of function keys F0 to F28.
  • A total of 6 DCC function outputs are available, and all can be function mapped (disable, brightness, light effects) individually
  • Follows all NMRA DCC standards and recommended practices.

ESU LokSound Features (GOLD LOCOMOTIVES ONLY):

  • Over 20 sound effects are available, including engine start-up and shutdown, prime mover sounds through all eight notches, bell, air horn, air compressor,
    dynamic brakes and more.
  • There are up to 16 user-selectable horns, 2 user-selectable bells, and 2 user-selectable synchronized brake squeals.
  • Manual and Automatic Notching modes with the ability to change modes ”on the fly” are provided for true realism.

Features (2017 and earlier):

  • NCE Decoder
  • Scale Speed™ motor
  • Powered low friction drive
  • Blackened metal wheels
  • Dual brass flywheels
  • Directional lighting
  • Golden-white LEDs
  • Body-mounted AccuMate® couplers

Check availability of this product on the Atlas Online Store

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Silver Item# Road Name Road Number Gold Item#
October 2021
Silver Undec MSRP: $134.95 Gold Undec MSRP: $244.95
Silver MSRP: $144.95 Gold MSRP: $254.95
N SD-7 Locomotive
40 005 300 Undecorated w/o DB - 40 005 320
40 005 301 Undecorated w/DB - 40 005 321
New Paint Scheme!
40 005 302 Chicago & North Western (Yellow/Green) 1663 40 005 322
40 005 303 Chicago & North Western (Yellow/Green) 1664 40 005 323
New Road Numbers!
40 005 304 Baltimore & Ohio* (Chessie System) (Yellow/Blue/Vermillion) 1827 40 005 324
40 005 305 Baltimore & Ohio* (Chessie System) (Yellow/Blue/Vermillion) 1830 40 005 325
40 005 306 Chicago, Burlington & Quincy (CB&Q) (Black/Gray) 314 40 005 326
40 005 307 Chicago, Burlington & Quincy (CB&Q) (Black/Gray) 322 40 005 327
N SD-9 Locomotive
40 005 308 Undecorated w/o DB - 40 005 328
40 005 309 Undecorated w/DB - 40 005 329
New Paint Schemes!
40 005 310 Central of Georgia (Blue/Gray) 204 40 005 330
40 005 311 Central of Georgia (Blue/Gray) 207 40 005 331
40 005 312 Montana Rail Link (Blue/Black) 601 40 005 332
40 005 313 Montana Rail Link (Blue/Black) 603 40 005 333
New Road Numbers!
40 005 314 Burlington Northern (Green/Black) 6187 40 005 334
40 005 315 Burlington Northern (Green/Black) 6198 40 005 335
40 005 316 Conrail (Blue/White) 6914 40 005 336
40 005 317 Conrail (Blue/White) 6919 40 005 337
40 005 318 Southern Pacific (Gray/Scarlet) 4355 40 005 338
40 005 319 Southern Pacific (Gray/Scarlet) 4391 40 005 339
Standard Item# Road Name Road Number DCC Item#
February 2017
Standard MSRP: $124.95 DCC MSRP: $159.95
N SD-7 Locomotive - New Paint Schemes!
53600 Undecorated w/o Dynamic Brake - -
40 003 664 Bessemer & Lake Erie (Orange/Black) 451 40 003 679
40 003 665 Bessemer & Lake Erie (Orange/Black) 453 40 003 680
40 003 666 Milwaukee Road (Orange/Black) 501 40 003 681
40 003 667 Milwaukee Road (Orange/Black) 512 40 003 682
40 003 668 Minneapolis & St. Louis (Green/Yellow/Gray) 852 40 003 683
40 003 669 Minneapolis & St. Louis (Green/Yellow/Gray) 952 40 003 684
N SD-9 Locomotive - New Road Numbers!
53500 Undecorated w/o Dynamic Brake - -
53501 Undecorated w/ Dynamic Brake  - -
40 003 670 Southern Pacific (LLW) (Black/Silver/Orange "Black Widow") 5399 40 003 685
40 003 671 Southern Pacific (Black/Silver/Orange "Black Widow") 5428 40 003 686
40 003 672 Southern Pacific (Black/Silver/Orange "Black Widow") 5440 40 003 687
40 003 673 Southern Pacific (Black/Silver/Orange "Black Widow") 5472 40 003 688
N SD-9 Locomotive - New Paint Schemes!
40 003 674 Elgin Joliet & Eastern (Orange/Green) 600 40 003 689
40 003 675 Elgin Joliet & Eastern (Orange/Green) 601 40 003 690
40 003 676 Rio Grande (Black/Aspen Gold) 5310 40 003 691 
40 003 677 Rio Grande (Black/Aspen Gold) 5312 40 003 692
40 003 678 Winchester & Western (Black/Yellow) 954 40 003 693
October 2014
Standard MSRP: $114.95 DCC MSRP: $149.95
N SD-9 Locomotives
53500 Undecorated w/o DB - -
53501 Undecorated w/ DB - -
40 001 828 Baltimore & Ohio (Blue/Yellow) 1835 40 001 842
40 001 829 Baltimore & Ohio (Blue/Yellow) 1840 40 001 843
40 001 830 Chicago & Illinois Midland (Green/Red/White) 50 40 001 844
40 001 831 Chicago & Illinois Midland (Green/Red/White) 54 40 001 845
40 001 832 Duluth, Missabe & Iron Range (Maroon/Yellow) 102 40 001 846
40 001 833 Duluth, Missabe & Iron Range (Maroon/Yellow) 118 40 001 847 
40 001 834 Elgin, Joliet & Eastern (Orange/Green) 601 40 001 848
40 001 835 Elgin, Joliet & Eastern (Orange/Green) 604 40 001 849
40 001 836 Norfolk & Western (Blue/Yellow) 2344 40 001 850
40 001 837 Norfolk & Western (Blue/Yellow) 2349 40 001 851
40 001 838 Pennsylvania (Green/Gold) 7601 40 001 852
40 001 839 Pennsylvania (Green/Gold) 7605 40 001 853
40 001 840 Rio Grande (Black/Orange) 5305 40 001 854
40 001 841 Rio Grande (Black/Orange) 5313 40 001 855
May 2010
Standard MSRP: $109.95 DCC MSRP: $144.95
N SD-7 Locomotive - New Paint Schemes!
53600 Undecorated w/o DB - -
53601 Undecorated w/ DB - -
53620 Burlington (Red/Grey)¥ 316 53650
53621 Burlington (Red/Grey)¥ 324 53651
53622 Chicago & North Western (Yellow/Green) 1660 53652
53623 Chicago & North Western (Yellow/Green) 1661 53653
N SD-9 Locomotive - New Paint Schemes!
53500 Undecorated w/ DB - -
53501 Undecorated w/o DB - -
53554 Burlington Northern (Green/Black)¥ 6195 53565
53555 Burlington Northern (Green/Black)¥ 6206 53566
53556 Black River (Black/White) 9581 53567
53557 California Northern (Green/White)¥ 202 53568
53558 California Northern (Green/White)¥ 203 53569
53559 Central of Georgia (Green/Yellow) 202 53570
53560 Central of Georgia (Green/Yellow) 207 53571
53561 Portland & Western (Orange/Black/Yellow)¥ 1851 53572
53562 Portland & Western (Orange/Black/Yellow)¥ 1854 53573
N SD-9 Locomotive - New Road Numbers!
53563 Southern Pacific (Grey/Scarlet)¥ 3914 53574
53564 Southern Pacific (Grey/Scarlet)¥ 3943 53575
September 2007
Standard MSRP: $104.95 DCC MSRP: $139.95
N SD-9 Locomotive - New Paint Schemes!
53500 Undecorated w/o Dynamic Brakes - -
53501 Undecorated w/ Dynamic Brakes - -
53524 Central of Georgia
(Black/Gold/Imitation Aluminum)¥		 203 53544
53525 Central of Georgia
(Black/Gold/Imitation Aluminum)¥		 206 53545
53526 Chicago & North Western (Green/Yellow) 1707 53546
53527 Chicago & North Western (Green/Yellow) 1709 53547
49698 Southern Pacific (Red/Yellow/Black) 4418 53552
49699 Southern Pacific (Red/Yellow/Black) 4420 53553
N SD-9 Locomotive - New Road Numbers!
53528 Norfolk & Western (Black/White)¥ 2342 53548
53529 Norfolk & Western (Black/White)¥ 2359 53549
53530 Pennsylvania (Green/Gold) 7606 53550
53531 Pennsylvania (Green/Gold) 7608 53551
August 2005
Standard MSRP: $94.95 DCC MSRP: $129.95
N SD-7 Locomotives – New Road Numbers!
53600 Undecorated w/o Dynamic Brakes - -
53601 Undecorated w/ Dynamic Brakes - -
53614 Burlington Northern (Green/Black) 6002 53644
53615 Burlington Northern (Green/Black) 6003 53645
53616 Great Northern (Green/Orange) 556 53646
53617 Great Northern (Green/Orange) 563 53647
N SD-7 Locomotives – New Paint Schemes!
53618 Union Pacific† (Yellow/Gray/Red) 450 53648
53619 Union Pacific† (Yellow/Gray/Red) 457 53649
N SD-9 Locomotives – New Road Names!
53500 Undecorated w/ Dynamic Brakes - -
53501 Undecorated w/o Dynamic Brakes - -
53517 Penn Central (Black/White) 6908 53537
53518 Penn Central (Black/White) 6911 53538
53519 Soo Line (Red/White) 2381 53539
N SD-9 Locomotives – New Road Numbers!
53513 Bessemer & Lake Erie (Orange/Black) 824 53533
53514 Bessemer & Lake Erie (Orange/Black) 828 53534
53520 Southern (Black/White/Imitation Gold) 205 53540
53521 Southern (Black/White/Imitation Gold) 207 53541
N SD-9 Locomotives – New Paint Schemes!
53515 Nickel Plate Road (Black/Gold) 340 53535
53516 Nickel Plate Road (Black/Gold) 355 53536
Standard Item# Road Name DCC Item#
October 2003
Standard MSRP: $94.95 DCC MSRP: $129.95
N SD-7 Locomotive
53600 UNDECORATED (without dynamic brakes)  
53601 UNDECORATED (with dynamic brakes)  
53602 BALTIMORE & OHIO (Blue/Yellow)* 1826 53632
53603 BALTIMORE & OHIO (Blue/Yellow) 1829 53633
53604 BURLINGTON ROUTE (Black/Red/Gray/Yellow)* 317 53634
53605 BURLINGTON ROUTE (Black/Red/Gray/Yellow)* 318 53635
53606 CONRAIL (Blue/White)* 6998 53636
53607 CONRAIL (Blue/White)* 6999 53637
53608 MILWAUKEE ROAD (Orange/Black) 509 53638
53609 MILWAUKEE ROAD (Orange/Black) 510 53639
53610 RIO GRANDE (Orange/Black)* 5300 53640
53611 RIO GRANDE (Orange/Black)* 5301 53641
53612 SOUTHERN PACIFIC (Orange/Black)* 5308 53642
53613 SOUTHERN PACIFIC (Orange/Black)* 5329 53643
May 2003
Standard MSRP: $94.95
N SD-9 Locomotive
53500 UNDECORATED (with dynamic brakes)  
53501 UNDECORATED (without dynamic brakes)  
53502 BNSF (Green/Orange) #6108  
53503 CHESSIE SYSTEM B&O (Yellow/Blue/Vermillion) #1834  
53504 CHESSIE SYSTEM B&O (Yellow/Blue/Vermillion) #1831  
53505 DULUTH MISSABE & IRON RANGE* (Maroon/Yellow) #111  
53506 DULUTH MISSABE & IRON RANGE* (Maroon/Yellow) #117  
53507 GREAT NORTHERN (Blue/White/Gray) #576  
53508 GREAT NORTHERN (Blue/White/Gray) #582  
53509 NORFOLK SOUTHERN (Black/White) #52  
53510 NORFOLK SOUTHERN (Black/White) #55  
53511 SOUTHERN PACIFIC* (Gray/Scarlet) #4341  
53512 SOUTHERN PACIFIC* (Gray/Scarlet) #4409