Description
The Atlas 40005111 is an N scale ALCO FB-1 cabless booster unit in classic Canadian Pacific (CP) tuscan-red and gray fast-freight livery, road number #4404, factory-equipped with DCC and full ESU LokSound.
Prototype
The ALCO FB-1 was the cabless booster ('B-unit') matching the FA-1 cab unit — 1,500 hp B-B truck, ALCO 244 prime mover, built 1946–1950, same carbody as the FA-1 but no operator cab. CP took 12 FB-1s (#4404–4415) from Montreal Locomotive Works in 1949 to ride mid-consist in transcontinental fast-freight A-B-A and A-B-B-A lashups. CP #4404 was the first FB-1 delivered to CP.
Key Features (Master Gold / DCC + Sound)
- Factory-installed ESU LokSound decoder with prototypical ALCO 244 V12 engine sound (matches the FA-1 cab unit decoders for synchronized A-B operation)
- Supports all DCC programming modes
- 28 or 128 speed steps; RailComPlus auto-registration
- Speakers tuned for the FB-1 carbody
- Operates on DC analog as well as DCC
- Blackened metal wheels, magnetic knuckle couplers (both ends)
Specifications
- Scale: N
- Type: Diesel Locomotive (B-B 4-axle booster, no cab)
- Prototype: ALCO FB-1
- Railroad: Canadian Pacific
- Road Number: #4404
- DCC: DCC/Sound (ESU LokSound, factory-installed)
- Brand: Atlas (Master Gold series)
- SKU: 40005111
Master Silver (DC, DCC-ready) version of the same road number: Atlas #40005074. Build a full sound-equipped A-B-A by pairing with Atlas #40005091 FA-1 CP #4015 and #40005092 FA-1 CP #4020 — the same three road numbers your CP fast freight wore behind the lead unit in 1949.

