MASTER MODEL FEATURES:
The Atlas B23-7 locomotive models include such optional/road name specific details as:
- Pilots with and without anti-climber
- Cab headlights or low-nose headlights
- Cab with 4 or 2 side windows
- Separately-applied scale detail parts include: windshield wipers, metal grab irons, coupler cut levers, multiple-unit hoses, snow plow, train line hoses, fine scale handrails, and more!
- See through step detail on sill
- Etched metal radiator grilles
- Painted crew members
- Factory-equipped with AccuMate® knuckle couplers
- Coupler pocket designed to accept AccuMate® Proto-couplers
- Five-pole skewed armature motor with dual flywheels for optimum performance at all speeds
- Directional lighting
- Bell mounted under the sill or on the long hood
- FB-2, AAR type B, or Blomberg truck side-frames used where appropriate per road name
Silver Sound Ready
Atlas Silver Sound Ready models are equipped with a speaker for easy conversion to sound with the addition of a decoder.
ANALOG (DC) OPERATION FEATURES:
- 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 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 B23-7 CANNOT be consisted with another locomotive that does not also have both DCC and sound. (This statement does NOT apply to DCC-equipped locomtives operating on a DCC layout.)
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, while the B30-7 replaced the 3,000HP U30B. The first B23-7s were produced for Conrail in September, 1977, and the first B30-7s were produced for Frisco three months later.
B23-7 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. 199 B30-7s were produced through 1981, with the combined fleets of Southern Pacific and Cotton Belt being the largest at 110 units.
Several features distinguished B23-7s and B30-7s 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, but some railroads opted to use “trade-in” trucks. Therefore, AAR type B and Blomberg trucks could be found on some models. 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. Eight power assembly doors in the same location help to identify the B30-7, which included a 16-cylinder FDL engine.