Atlas HO U23B Locomotive

Powered by a V12 FDL prime mover, the 2250 h.p. U23B was GE’s intermediate-sized four-axle road-switcher of the late 1960s through the mid 1970s. The U23B’s direct competitor during this period was the very successful EMD GP38. In 10 years of production from 1968 through 1977 a total of 481 units were produced, making this the second best seller of GE’s “Universal Series” locomotives. The first units were delivered to the Delaware & Hudson in August and September 1968. CSX predecessors Chesapeake & Ohio and Louisville & Nashville had a combined fleet of 120 units, giving CSX one of the larger active fleets in later years. Penn Central, Santa Fe and Missouri Pacific also purchased sizeable fleets of U23Bs.

Primary spotting features include a stepped-out radiator section and two sets of three tall engine access doors near the center of the long hood. During production, the U23B was equipped with various truck side frames, including Blomberg trucks from EMD trade-in locomotives, AAR-style trucks, or GE’s own four-axle “FB2” truck. One of these three truck styles is included on our model where appropriate per road name.

Today the number of active U23B’s has dwindled, but a handful can still be found working for short lines and regional railroads in North America.

Features:

  • Snow plow (included when appropriate per road name)
  • Separately-applied scale detail parts include: windshield wipers, metal grab irons, coupler cut levers, multiple-unit hoses, train line hoses, fine scale handrails, drop steps and more!
  • Five pole skewed armature motor with dual flywheels for optimum performance at all speeds
  • Directional lighting with Golden-white LEDs
  • Blackened metal wheels

Atlas Master™ Series Silver Additional Features:

  • NMRA 8-pin plug for DCC (Decoder-ready)

Sound Features for Gold Series :
(DCC Operation)

  • Supports all DCC-programming modes
  • Flexible mapping of function keys F0 to F28.
  • A total of six DCC function outputs are available
  • Follows all NMRA DCC standards and recommended practices.

Analog (DC) Operation:

  • The LokSound Select Dual-Mode decoder allows your Atlas Gold Series locomotive to be used on DC as well as on DCC layouts.
    • Please note that the Atlas Quantum Engineer will NOT operate an Atlas Gold Series locomotive equipped with a LokSound Select decoder on an analog (DC) layout. However, the sound and lighting
    functions of the LokSound Select decoder in the Atlas Gold Series U23B locomotive can be controlled by an easy-to-use basic DCC system.
  • Also note that on a DC-powered layout, a DCC and sound equipped locomotive (such as the Atlas Gold Series U23B) CANNOT be consisted with another locomotive that does not also have both DCC and sound. (This statement does NOT apply to DCC-equipped locomotives operating on a DCC layout.)

Sound Functionality:

  • 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 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.

AccuMate® couplers are made under license from AccuRail, Inc.

 

Check availability of this product on the Atlas Online Store

Silver Item# Road Name Road Number Gold Item#
November 2015
Silver MSRP: $149.95 Gold MSRP: $259.95
HO U23B Low Nose Locomotive
10 000 810 Undecorated w/AAR Trucks w/o Low Nose H/L   - 10 000 839
10 000 811 Undecorated w/FB-2/Blomberg Trucks w/o Low Nose H/L - 10 000 840
Road Numbers Back by Popular Demand!
10 002 164 MKT (Green/Yellow) 350 10 002 185
10 002 165 MKT (Green/Yellow) 351 10 002 186
10 002 166 MKT (Green/Yellow) 352 10 002 187
New Road Numbers!
10 002 167 C&O* (Blue/Yellow) 2300 10 002 188
10 002 168 C&O* (Blue/Yellow) 2303 10 002 189
10 002 169 C&O* (Blue/Yellow) 2322 10 002 190
10 002 170 Conrail (Blue/White) 2748 10 002 191
10 002 171 Conrail (Blue/White) 2759 10 002 192
10 002 172 Conrail (Blue/White) 2774 10 002 193
10 002 173 Western Pacific (Green/Orange) 2254 10 002 194
10 002 174 Western Pacific (Green/Orange) 2256 10 002 195
10 002 175 Western Pacific (Green/Orange) 2265 10 002 196
New Paint Scheme!
10 002 176 Erie Lackawanna++ (Gray/Maroon/Yellow) 2301 10 002 197
10 002 177 Erie Lackawanna++ (Gray/Maroon/Yellow) 2314 10 002 198
10 002 178 Erie Lackawanna++ (Gray/Maroon/Yellow) 2320 10 002 199
HO U23B High Nose Locomotive
10 000 832 Undecorated w/ AAR Trucks - 10 000 861
New Road Numbers!
10 002 179 Norfolk Southern (Black/White) 3900 10 002 200
10 002 180 Norfolk Southern (Black/White) 3919 10 002 201
10 002 181 Norfolk Southern (Black/White) 3928 10 002 202
New Paint Scheme!
10 002 182 Georgia Central (Black/White) 3910 10 002 203
10 002 183 Georgia Central (Black/White) 3917 10 002 204
10 002 184 Georgia Central (Black/White) 3928 10 002 205
++ Alternate History Paint Scheme - Erie Lackawanna had U23B locomotives on order from GE but the order was cancelled in advance of the creation of Conrail. This paint scheme is based on the actual GE paint diagram for the EL production order.
Item# Road Name Road Number
November 2009
Silver MSRP: $149.95 Gold MSRP: $259.95
HO U23B Low Nose Locomotive
Atlas Master™ Series Silver - (Without Decoder and Sound) [DCC Ready]
10 000 810 Undecorated w/AAR Trucks w/o Low Nose H/L -
10 000 812 Undecorated w/AAR Trucks w/Low Nose H/L -
10 000 813 Undecorated w/FB-2/Blomberg Trucks w/Low Nose H/L -
New Paint Scheme!
10 000 814 Central Michigan (Black/White) 8903
10 000 815 Central Michigan (Black/White) 8904
10 000 816 Central Michigan (Black/White) 8905
New Road Numbers!
10 000 817 Guilford (MEC)+ (Gray/Orange) 281
10 000 818 Guilford (MEC)+ (Gray/Orange) 285
10 000 819 Guilford (MEC)+ (Gray/Orange) 293
10 000 820 Louisville & Nashville*+ (Gray w/Yellow Lettering) 2751
10 000 821 Louisville & Nashville*+ (Gray w/Yellow Lettering) 2720
10 000 822 Louisville & Nashville*+ (Gray w/Yellow Lettering) 2742
10 000 823 Monon*+ (Black/Gold) 602
10 000 824 Monon*+ (Black/Gold) 605
10 000 825 Monon*+ (Black/Gold) 608
10 000 826 Penn Central (Black/White) 2706
10 000 827 Penn Central (Black/White) 2723
10 000 828 Penn Central (Black/White) 2746
10 000 829 Santa Fe (Blue/Yellow "Warbonnet") 6309
10 000 830 Santa Fe (Blue/Yellow "Warbonnet") 6336
10 000 831 Santa Fe (Blue/Yellow "Warbonnet") 6341
HO U23B High Nose Locomotive - New Model!
10 000 832 Undecorated w/ AAR Trucks -
10 000 833 Norfolk Southern (Black/White) 3916
10 000 834 Norfolk Southern (Black/White) 3920
10 000 835 Norfolk Southern (Black/White) 3931
10 000 836 Southern (Black/Imitation Aluminum/Yellow) 3923
10 000 837 Southern (Black/Imitation Aluminum/Yellow) 3919
10 000 838 Southern (Black/Imitation Aluminum/Yellow) 3928
HO U23B Low Nose Locomotive
Atlas Master™ Series Gold (With Decoder & Sound)
10 000 839 Undecorated w/AAR Trucks w/o Low Nose H/L -
10 000 841 Undecorated w/AAR Trucks w/Low Nose H/L -
10 000 842 Undecorated w/FB-2/Blomberg Trucks w/Low Nose H/L -
New Paint Scheme!
10 000 843 Central Michigan (Black/White) 8903
10 000 844 Central Michigan (Black/White) 8904
10 000 845 Central Michigan (Black/White) 8905
New Road Numbers!
10 000 846 Guilford (MEC)+ (Gray/Orange) 281
10 000 847 Guilford (MEC)+ (Gray/Orange) 285
10 000 848 Guilford (MEC)+ (Gray/Orange) 293
10 000 849 Louisville & Nashville*+ (Gray w/Yellow Lettering) 2746
10 000 850 Louisville & Nashville*+ (Gray w/Yellow Lettering) 2728
10 000 851 Louisville & Nashville*+ (Gray w/Yellow Lettering) 2745
10 000 852 Monon*+ (Black/Gold) 602
10 000 853 Monon*+ (Black/Gold) 605
10 000 854 Monon*+ (Black/Gold) 608
10 000 855 Penn Central (Black/White) 2725
10 000 856 Penn Central (Black/White) 2739
10 000 857 Penn Central (Black/White) 2748
10 000 858 Santa Fe (Blue/Yellow "Warbonnet") 6312
10 000 859 Santa Fe (Blue/Yellow "Warbonnet") 6321
10 000 860 Santa Fe (Blue/Yellow "Warbonnet") 6340
HO U23B High Nose Locomotive - New Model!
10 000 861 Undecorated w/ AAR Trucks -
10 000 862 Norfolk Southern (Black/White) 3918
10 000 863 Norfolk Southern (Black/White) 3921
10 000 864 Norfolk Southern (Black/White) 3934
10 000 865 Southern (Black/Imitation Aluminum/Yellow) 3920
10 000 866 Southern (Black/Imitation Aluminum/Yellow) 3924
10 000 867 Southern (Black/Imitation Aluminum/Yellow) 3930
April 2006
MSRP: $109.95
HO U23B Locomotive
8650 Undecorated (AAR Trucks)  
8651 Undecorated (FB-2/Blomberg Trucks)  
HO U23B Locomotive - New Paint Schemes!
8260 CSX* (Gray/Blue "Stripe") 3243
8261 CSX* (Gray/Blue "Stripe") 3278
8262 CSX* (Gray/Blue "Stripe") 3289
8263 Delaware & Hudson (Blue/Gray/Yellow "Lightning Stripe") 2304
8264 Delaware & Hudson (Blue/Gray/Yellow "Lightning Stripe") 2307
8265 Delaware & Hudson (Gray/Yellow "Gray Ghost") 2311
8266 Delaware & Hudson (Red/White/Blue "Bicentennial") 1776
8291 Missouri Pacific† (Blue/White) (1980s scheme) 4512
8292 Missouri Pacific† (Blue/White) (1980s scheme) 4525
8293 Missouri Pacific† (Blue/White) (1980s scheme) 4530
8294 NdeM (Dark Green/Red/Yellow) 9103
8295 NdeM (Dark Green/Red/Yellow) 9114
8296 NdeM (Dark Green/Red/Yellow) 9120
HO U23B Locomotive - New Road Numbers!
8267 Lehigh Valley (Cornell Red/Yellow) 505
8268 Lehigh Valley (Cornell Red/Yellow) 510
8269 Lehigh Valley (Cornell Red/Yellow) 512
8288 Milwaukee Road (Black/Orange) 5000
8289 Milwaukee Road (Black/Orange) 5002
8290 Milwaukee Road (Black/Orange) 5003
8297 Santa Fe (Blue/Yellow) (Pre-1972 Scheme) 6324
8298 Santa Fe (Blue/Yellow) (Pre-1972 Scheme) 6330
8299 Santa Fe (Blue/Yellow) (Pre-1972 Scheme) 6346
October 2003
MSRP: $104.95
HO U23B LOCOMOTIVES
8650 Undecorated (AAR Trucks)  
8651 Undecorated (Floating Bolster/Blomberg Trucks)  
8270 CSX (Blue/Gray/Yellow)-Floating Bolster Trucks 3265
8271 CSX (Blue/Gray/Yellow)-Floating Bolster Trucks 3305
8272 CSX (Blue/Gray/Yellow)-Floating Bolster Trucks No#
8273 CSX (Orange/Black “M of W”)-Floating Bolster Trucks 9552
8274 CSX (Orange/Black “M of W”)-Floating Bolster Trucks 9554
8275 Delaware & Hudson (Blue/Yellow)-AAR-B Trucks 2302
8276 Delaware & Hudson (Blue/Yellow)-AAR-B Trucks 2303
8277 Delaware & Hudson (Blue/Yellow)-AAR-B Trucks No#
8278 Providence & Worcester (Brown/Orange)-Floating Bolster Trucks 2205
8279 Providence & Worcester (Brown/Orange)-Floating Bolster Trucks 2206
8280 Providence & Worcester (Brown/Orange)-Floating Bolster Trucks No#
8281 Reading & Northern (Green/Yellow)-AAR-B Trucks 2397
8282 Reading & Northern (Green/Yellow)-AAR-B Trucks 2399
8283 Seaboard System (Gray/Yellow/Red)-Floating Bolster Trucks 2751
8284 Seaboard System (Gray/Yellow/Red)-Floating Bolster Trucks 2756
8285 Seaboard System (Gray/Yellow/Red)-Floating Bolster Trucks No#
8286 Western Pacific (Green/Orange)-Blomberg Trucks 2251
8287 Western Pacific (Green/Orange)-Blomberg Trucks 2263
October 2000
MSRP: $99.95
HO U23B Locomotive - New Paint Schemes
8647 GUILFORD MEC (Gray & Orange) 280
8648 GUILFORD MEC (Gray & Orange) 288
8649 GUILFORD MEC (Gray & Orange) No #
8691 SANTA FE (Warbonnet) 6310
8692 SANTA FE (Warbonnet) 6319
8693 SANTA FE (Warbonnet) No #
8694 CHESSIE SYSTEM (Blue, Yellow & Vermillion) 2306
8695 CHESSIE SYSTEM (Blue, Yellow & Vermillion) 2314
8696 CHESSIE SYSTEM (Blue, Yellow & Vermillion) No #
8697 CSX (Gray & Blue) 3266
8698 CSX (Gray & Blue) 3270
8699 CSX (Gray & Blue) No #