General Electric’s “Dash 7” locomotive line was introduced as a replacement for the older “Universal-Series” of the 60s and early 70s. “Dash 7” series improvements included increased fuel efficiency, tractive effort and reliability. The B23-7 was a direct replacement for the 2,250HP U23B model. The first units were produced for Conrail in September, 1977 (ironically, 3 months after the last U23B was delivered to Conrail). Production continued through 1984, with a total of 535 units built. Conrail was the largest purchaser of the model, with a total fleet of 141 units.
Several features distinguished B23-7s from predecessor models. The long hood stepped outward in the area of the exhaust stack to accommodate a relocated oil cooler. In addition, the frame was 2 feet longer than that of the U23B. An FB-2 style truck was offered as standard equipment on B23-7s, but some railroads opted to use “trade-in” trucks. Therefore, AAR type B and Blomberg trucks could be found on some models. The six power assembly doors (located near the center of the long hood) indicated that the B23-7 was powered by a 12-cylinder GE FDL engine.
Features:
- Directional lighting
- Golden-white LEDs
- Dual brass flywheels
- Low-friction mechanism
- Accurate painting and lettering
- Factory-installed AccuMate® magnetic knuckle couplers
Additional Features (2022 and later):
- 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.
Check availability of this product on the Atlas Online Store
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Silver Item# |
Road Name |
Road Number |
Gold Item# |
June 2022
Silver Undec MSRP: $129.95 GOld Undec MSRP: $239.95
Silver MSRP: $139.95 Gold MSRP: $249.95
Silver w/ Ditchlights MSRP: $149.95 Gold w/ditchlights MSRP: $259.95 |
N B23-7 Locomotive |
40 005 422 |
Undecorated - "Phase 1" Low Nose with Nose H/L, no anticlimber |
- |
40 005 448 |
40 005 423 |
Undecorated - "Phase 2" Low Nose w/o Nose H/L, w/anticlimber |
- |
40 005 449 |
40 005 435 |
Undecorated - "Phase 1" High Nose, no anticlimber |
- |
40 005 461 |
New Paint Schemes! |
40 005 424 |
Conrail (Blue/White) |
1910 |
40 005 450 |
40 005 425 |
Conrail (Blue/White) |
1925 |
40 005 451 |
40 005 426 |
Conrail (White Sill) (Blue/White) |
1948 |
40 005 452 |
40 005 427 |
Conrail (White Sill) (Blue/White) |
1963 |
40 005 453 |
40 005 428 |
Finger Lakes Railway (Black/Grey/White) |
2309 |
40 005 454 |
40 005 429 |
Finger Lakes Railway (Black/Grey/White) |
2310 |
40 005 455 |
40 005 430 |
Minnesota Commercial (Red/White) |
43 |
40 005 456 |
40 005 431 |
Minnesota Commercial (Red/White) |
44 |
40 005 457 |
40 005 432 |
Santa Fe (Blue/Yellow) |
6396 |
40 005 458 |
40 005 433 |
Santa Fe (Blue/Yellow) |
6400 |
40 005 459 |
40 005 434 |
Santa Fe (Blue/Yellow) |
6402 |
40 005 460 |
New Road Numbers! |
40 005 436 |
Southern (Black/White) |
3975 |
40 005 462 |
40 005 437 |
Southern (Black/White) |
3977 |
40 005 463 |
40 005 438 |
Southern (Black/White) |
3986 |
40 005 464 |
N B30-7 Locomotive |
40 005 439 |
Undecorated - "Phase 1" High Nose, no anticlimber |
- |
40 005 465 |
New Road Numbers! |
40 005 440 |
Chessie System* (Blue/Yellow/Vermillion) |
8238 |
40 005 466 |
40 005 441 |
Chessie System* (Blue/Yellow/Vermillion) |
8241 |
40 005 467 |
40 005 442 |
Chessie System* (Blue/Yellow/Vermillion) |
8243 |
40 005 468 |
New Paint Schemes! |
40 005 443 |
Southern Pacific (Speed Lettering) (Scarlet/Gray) |
7823 |
40 005 469 |
40 005 444 |
Southern Pacific (Speed Lettering) (Scarlet/Gray) |
7828 |
40 005 470 |
40 005 445 |
Southern Pacific (Speed Lettering) (Scarlet/Gray) |
7850 |
40 005 471 |
N B36-7 Locomotive - Back by Popular Demand! |
40 005 446 |
BC Rail (Red/White/Blue) |
3607 |
40 005 472 |
40 005 447 |
BC Rail (Red/White/Blue) |
3613 |
40 005 473 |
Standard Item# |
Road Name |
Road Number |
DCC Item# |
March 2015
Standard MSRP: $124.95 DCC MSRP: $159.95 |
N B23-7 Locomotive - Low Hood |
40 002 372 |
Undecorated (Thin Anti-climber) |
- |
- |
40 002 373 |
Undecorated (Thick Anti-climber) |
- |
- |
40 002 375 |
Conrail (Blue/White) |
1971 |
40 002 404 |
40 002 376 |
Conrail (Blue/White) |
1984 |
40 002 405 |
40 002 377 |
Conrail (Blue/White) |
1987 |
40 002 406 |
40 002 378 |
Santa Fe (Blue/Yellow) |
6366 |
40 002 407 |
40 002 379 |
Santa Fe (Blue/Yellow) |
6372 |
40 002 408 |
40 002 380 |
Santa Fe (Blue/Yellow) |
6379 |
40 002 409 |
40 002 381 |
Union Pacific (Yellow/Grey/Red) |
144 |
40 002 410 |
40 002 382 |
Union Pacific (Yellow/Grey/Red) |
158 |
40 002 411 |
40 002 383 |
Union Pacific (Yellow/Grey/Red) |
166 |
40 002 412 |
N B23-7 Locomotive - High Hood |
40 002 374 |
Undecorated |
- |
- |
40 002 384 |
Norfolk Southern (Black/White) |
3975 |
40 002 413 |
40 002 385 |
Norfolk Southern (Black/White) |
3980 |
40 002 414 |
40 002 386 |
Norfolk Southern (Black/White) |
3987 |
40 002 415 |
40 002 387 |
Southern (Black/Gold/Grey) |
3970 |
40 002 416 |
40 002 388 |
Southern (Black/Gold/Grey) |
3978 |
40 002 417 |
40 002 389 |
Southern (Black/Gold/Grey) |
3989 |
40 002 418 |
N B30-7 Locomotive |
40 002 390 |
Undecorated |
- |
- |
40 002 391 |
Frisco (Orange/White) |
863 |
40 002 419 |
40 002 392 |
Frisco (Orange/White) |
866 |
40 002 420 |
40 002 393 |
Frisco (Orange/White) |
870 |
40 002 421 |
40 002 394 |
Southern Pacific (Grey/Scarlet) |
7865 |
40 002 422 |
40 002 395 |
Southern Pacific (Grey/Scarlet) |
7880 |
40 002 424 |
40 002 396 |
Southern Pacific (Grey/Scarlet) |
7883 |
40 002 425 |
N B36-7 Locomotive |
40 002 397 |
Undecorated |
- |
- |
40 002 398 |
CSX* (Grey/Blue/Yellow) |
5811 |
40 002 426 |
40 002 399 |
CSX* (Grey/Blue/Yellow) |
5835 |
40 002 427 |
40 002 400 |
CSX* (Grey/Blue/Yellow) |
5908 |
40 002 428 |
40 002 401 |
Seaboard System* (Grey/Red/Yellow) |
5808 |
40 002 429 |
40 002 402 |
Seaboard System* (Grey/Red/Yellow) |
5822 |
40 002 430 |
40 002 403 |
Seaboard System* (Grey/Red/Yellow) |
5860 |
40 002 431 |
December 2009
Standard MSRP: $109.95 DCC MSRP: $144.95 |
N B23-7 Locomotive - New Road Numbers! |
49701 |
Undecorated |
- |
- |
49703 |
Undecorated |
- |
- |
40 000 285 |
BNSF (Orange/Green/Yellow) |
4230 |
40 000 307 |
40 000 286 |
BNSF (Orange/Green/Yellow) |
4242 |
40 000 308 |
40 000 287 |
BNSF (Orange/Green/Yellow) |
4247 |
- |
40 000 288 |
Conrail Quality (Blue/White) |
1989 |
40 000 309 |
40 000 289 |
Conrail Quality (Blue/White) |
2002 |
40 000 310 |
40 000 290 |
Conrail Quality (Blue/White) |
2011 |
- |
N B23-7 Locomotive - New Paint Schemes! |
40 000 291 |
Finger Lakes Railway (Black/Grey/White) |
2301 |
40 000 311 |
40 000 292 |
Finger Lakes Railway (Black/Grey/White) |
2303 |
40 000 312 |
40 000 293 |
FNM (Blue/Orange) |
9141 |
40 000 313 |
40 000 294 |
FNM (Blue/Orange) |
9152 |
40 000 314 |
40 000 295 |
FNM (Blue/Orange) |
9157 |
- |
40 000 296 |
Metro North (Silver/Blue/Red) |
801 |
40 000 315 |
40 000 297 |
Metro North (Silver/Blue/Red) |
802 |
40 000 316 |
40 000 298 |
Metro North (Silver/Blue/Red) |
807 |
- |
40 000 299 |
Minnesota Commercial (Red/White) |
1971 |
40 000 317 |
40 000 300 |
Minnesota Commercial (Red/White) |
1978 |
40 000 318 |
40 000 301 |
Minnesota Commercial (Red/White) |
1983 |
- |
N B30-7 Locomotive - New Paint Schemes! |
49900 |
Undecorated |
- |
- |
40 000 302 |
CSX Transportation* (Grey/Blue) |
5508 |
40 000 320 |
40 000 303 |
CSX Transportation* (Grey/Blue) |
5511 |
40 000 321 |
40 000 304 |
Seaboard System* (Grey/Yellow/Red) |
5500 |
40 000 322 |
40 000 305 |
Seaboard System* (Grey/Yellow/Red) |
5505 |
40 000 323 |
40 000 306 |
Seaboard System* (Grey/Yellow/Red) |
5516 |
- |
December 2005
Standard MSRP: $99.95 DCC MSRP: $134.95 |
N B23-7 Locomotive |
49701 |
Undecorated
(Anticlimber pilot w/FB-2 trucks)
|
|
- |
49703 |
Undecorated
(Standard pilot w/Blomberg Trucks)
|
|
- |
49704 |
Undecorated
(Standard pilot w/FB-2 Trucks)
|
|
- |
N B23-7 Locomotive - New Road Names! |
49755 |
Providence
& Worcester (Brown/Orange/White) |
2201 |
49994 |
49756 |
Providence
& Worcester (Brown/Orange/White) |
2213 |
49995 |
49757 |
Providence & Worcester (Brown/Orange/White) |
No # |
- |
N B23-7 Locomotive - New Road Numbers! |
49749 |
Conrail (Blue/White) |
2808 |
49990 |
49750 |
Conrail (Blue/White) |
2813 |
49991 |
49751 |
Conrail (Blue/White) |
No # |
- |
49752 |
CSX* (Blue/Yellow/Grey) |
3113 |
49992 |
49753 |
CSX* (Blue/Yellow/Grey) |
3126 |
49993 |
49754 |
CSX* (Blue/Yellow/Grey) |
No # |
- |
49758 |
Santa Fe (Blue/Yellow) |
6350 |
49996 |
49759 |
Santa Fe (Blue/Yellow) |
6358 |
49997 |
49760 |
Santa Fe (Blue/Yellow) |
No # |
- |
49761 |
Southern
(Black/Imitation Aluminum/Gold) |
3971 |
49998 |
49762 |
Southern (Black/Imitation Aluminum/Gold) |
3982 |
49999 |
49763 |
Southern (Black/Imitation Aluminum/Gold) |
No # |
- |
49764 |
Union Pacific† (Yellow/Grey/Red) |
101 |
49968 |
49765 |
Union Pacific†
(Yellow/Grey/Red) |
106 |
49969 |
49766 |
Union Pacific† (Yellow/Grey/Red) |
No # |
- |
N B30-7 Locomotive |
49900 |
Undecorated |
|
- |
N B30-7 Locomotive - New Road Numbers! |
49919 |
Burlington
Northern (Green/Black) |
5485 |
49984 |
49920 |
Burlington Northern (Green/Black) |
5488 |
49985 |
49921 |
Burlington Northern (Green/Black) |
No # |
- |
49922 |
Chessie System*
(Yellow/Blue/Vermillion) |
8245 |
49986 |
49923 |
Chessie System* (Yellow/Blue/Vermillion) |
8250 |
49987 |
49924 |
Chessie System* (Yellow/Blue/Vermillion) |
No # |
- |
49925 |
Cotton Belt†
(Grey/Red) |
7779 |
49988 |
49926 |
Cotton Belt† (Grey/Red) |
7786 |
49989 |
49927 |
Cotton Belt† (Grey/Red) |
No # |
- |
June 2004
Standard MSRP: $99.95 DCC MSRP: $134.95 |
N B23-7 Locomotive Low Nose- New Paint Schemes! |
49700 |
Undecorated
(Fat Anticlimber,
Knuckle Battery Box, Flat rear h/l) |
|
|
49701 |
Undecorated
(Fat Anticlimber,
Button Battery Box, Flat rear h/l) |
|
|
49702 |
Undecorated
(Fat Anticlimber, Button Battery Box, Protruding rear h/l) |
|
|
49703 |
Undecorated
(Thin Anticlimber, Button Battery Box, Flat rear h/l) |
|
|
49705 |
Undecorated
(Thin Anticlimber, Button Battery Box, Protruding rear h/l) |
|
|
49730 |
Santa Fe(Kodachrome) (Red/Yellow/Black) |
6374 |
49786 |
49731 |
Santa Fe (Kodachrome)
(Red/Yellow/Black) |
6404 |
49787 |
49732 |
Santa Fe (Kodachrome) (Red/Yellow/Black) |
No # |
|
49733 |
BNSF (Orange/Green/Yellow) |
4231 |
49788 |
49734 |
BNSF (Orange/Green/Yellow) |
4266 |
49789 |
49735 |
BNSF (Orange/Green/Yellow) |
No # |
|
49736 |
Conrail (Keep
It Moving!) (Blue/White) |
1980 |
49790 |
49737 |
Conrail Quality (Blue/White) |
1915 |
49791 |
49738 |
Conrail Quality
(Blue/White) |
1965 |
49792 |
49739 |
Conrail Quality (Blue/White) |
No # |
|
49740 |
Family
Lines (SCL) (Gray/Yellow/Red/White)† |
5100 |
49793 |
49741 |
Family Lines (L&N) (Gray/Yellow/Red/White)† |
5118 |
49794 |
49742 |
Family Lines (Gray/Yellow/Red/White)† |
No # |
|
49743 |
Missouri Pacific
(Dark Blue/White/Red) |
4631 |
49795 |
49744 |
Missouri Pacific
(Dark Blue/White/Red) |
4649 |
49796 |
49745 |
Missouri Pacific
(Dark Blue/White/Red) |
No # |
|
N B23-7 Locomotive High Nose- New Paint Schemes! |
49704 |
Undecorated*
(Thin
Anticlimber, Knuckle Battery Box, Protruding rear h/l) |
|
|
49746 |
Norfolk Southern*
(Black/White) |
3984 |
49797 |
49747 |
Norfolk Southern* (Black/White) |
3985 |
49798 |
49748 |
Norfolk Southern* (Black/White) |
No # |
|
June 2001
Standard MSRP: $99.95 DCC MSRP: $134.95 |
N B30-7 |
49900 |
UNDECORATED (Thin Anticlimber,
Button Battery Box, AAR-B trucks, Flat rear headlight) |
|
|
49901 |
UNDECORATED (Thin
Anticlimber, Knuckle Battery Box, AAR-B trucks, Protruding
rear h/l) |
|
|
49902 |
UNDECORATED (Thin
Anticlimber, Button Battery Box, FB-2 trucks, Protruding rear h/l) |
|
|
49903 |
UNDECORATED (Fat
Anticlimber, Knuckle Battery Box, FB-2 trucks, Protruding rear h/l) |
|
|
49904 |
BURLINGTON
NORTHERN(Green/Black/White) |
|
49970 |
49905 |
BURLINGTON
NORTHERN #5492 (Green/Black/White) |
|
49971 |
49906 |
BURLINGTON
NORTHERN - No # (Green/Black/White) |
|
|
49907 |
CHESSIE SYSTEM
#8284 (Blue/Yellow/Vermillion) |
|
49972 |
49908 |
CHESSIE
SYSTEM #8297 (Blue/Yellow/Vermillion) |
|
49973 |
49909 |
CHESSIE SYSTEM
- No # (Blue/Yellow/Vermillion) |
|
|
49910 |
COTTON BELT
#7783 (Gray/Red/White) |
|
49974 |
49911 |
COTTON
BELT #7798 (Gray/Red/White) |
|
49975 |
49912 |
COTTON BELT
-No # (Gray/Red/White) |
|
|
49913 |
CSX #5562 (Blue/Gray) |
|
49976 |
49914 |
CSX
#5574 (Blue/Gray) |
|
49977 |
49915 |
CSX -No # (Blue/Gray) |
|
|
49916 |
FRISCO #864
(Red/White) |
|
49978 |
49917 |
FRISCO
#866 (Red/White) |
|
49979 |
49918 |
FRISCO -No
# (Red/White) |
|
|
N B36-7 |
49930 |
BC RAIL #3607 (Red/White/Blue) |
|
49980 |
49931 |
BC
RAIL #3613 (Red/White/Blue) |
|
49981 |
49932 |
BC RAIL -No # (Red/White/Blue) |
|
|
49933 |
SANTA FE #7487 (Blue/Yellow) |
|
49982 |
49934 |
SANTA
FE #7490 (Blue/Yellow) |
|
49983 |
49935 |
SANTA FE -No # (Blue/Yellow) |
|
|
October 2000
Standard MSRP: $99.95 DCC MSRP: $134.95 |
N B23-7 |
49700 |
UNDECORATED (Fat Anticlimber,
Knuckle Battery Box, FB-2 trucks, Low Nose, Flat rear h/l) |
|
|
49701 |
UNDECORATED (Fat
Anticlimber, Buttons Battery Box, AA-R trucks, Low Nose, Flat rear
h/l) |
|
|
49702 |
UNDECORATED (Fat
Anticlimber, Buttons Battery Box, FB-2 trucks, Low Nose, Protruding
rear h/l) |
|
|
49703 |
UNDECORATED (Thin
Anticlimber, Buttons Battery Box, Blomberg trucks, Low Nose, Flat
rear h/l) |
|
|
49704 |
UNDECORATED (Thin
Anticlimber, Knuckle Battery Box, FB-2 trucks, High Nose, Protruding
rear h/l) |
|
|
49705 |
UNDECORATED (Thin
Anticlimber, Buttons Battery Box, FB-2 trucks, Low Nose, Protruding
rear h/l) |
|
|
49706 |
SANTA FE-6365
(Warbonnet) |
|
49770 |
49707 |
SANTA
FE-6390 (Warbonnet) |
|
49771 |
49708 |
SANTA FE-No
# (Warbonnet) |
|
|
49709 |
BNSF-4252 (Green
& Orange) |
|
49772 |
49710 |
BNSF-4265
(Green & Orange) |
|
49773 |
49711 |
BNSF-No # (Green
& Orange) |
|
|
49712 |
CONRAIL-1913
(Blue & White) |
|
49774 |
49713 |
CONRAIL-1928
(Blue & White) |
|
49775 |
49714 |
CONRAIL-No
# (Blue & White) |
|
|
49715 |
CSX-3102 (Gray
& Blue & Yellow) |
|
49776 |
49716 |
CSX-3106 (Gray
& Blue & Yellow) |
|
49777 |
49717 |
CSX-No # (Gray
& Blue & Yellow) |
|
|
49718 |
NORFOLK SOUTHERN-3982
(Black & White)* |
|
49778 |
49719 |
NORFOLK
SOUTHERN-4002 (Black & White)* |
|
49779 |
49720 |
NORFOLK SOUTHERN-No
# (Black & White)* |
|
|
49721 |
SOUTHERN-4011J (Black
& Imitation Aluminum)* |
|
49780 |
49722 |
SOUTHERN-4023W
(Black & Imitation Aluminum)* |
|
49781 |
49723 |
SOUTHERN-No # (Black
& Imitation Aluminum)* |
|
|
49724 |
SOUTHERN
PACIFIC-5100 (Bloody Nose) |
|
49782 |
49725 |
SOUTHERN PACIFIC-5112
(Bloody Nose) |
|
49783 |
49726 |
SOUTHERN PACIFIC-No
# (Bloody Nose) |
|
|
49727 |
UNION
PACIFIC-121 (Yellow w/ Multi-colored herald) |
|
49784 |
49728 |
UNION PACIFIC-137
(Yellow w/ Multi-colored herald) |
|
49785 |
49729 |
UNION PACIFIC-No
# (Yellow w/ Multi-colored herald) |
|
|