ALCO RS-27

ALCO RS-27
Power type Diesel-electric
Builder ALCO
Model RS-27
Build date December 1959 – October 1962
Total produced 27
AAR wheel arr. B-B
Gauge 4 ft 8.5 in (1,435 mm)
Wheel diameter 40 in (1,016 mm)
Wheelbase 40 ft 4 in (12.29 m)
Length 57 ft 2 12 in (17.44 m)
Width 9 ft 11 18 in (3.03 m)
Height 14 ft 6 in (4.42 m)
Prime mover Alco 251B
Displacement 10,688 cu in (175.14 l)
Cylinders V16
Cylinder size 9 × 10.5 in (229 × 267 mm)
Power output 2,400 hp (1.8 MW)

The ALCO RS-27 (specification DL-640) is a diesel-electric locomotive built by ALCO between December 1959 and October 1962. Only 27 examples were manufactured. With ALCO's introduction of the Century Series line, the C-424 (specification DL-640A) replaced the RS-27 in the builder's catalog. Today, the Minnesota Commercial Railway has the only two operating RS-27s left.

Original Owners

Railroad Quantity Road Numbers Notes
American Locomotive Company (demonstrator)
5
640-1 to 640-5
640-1 rebuilt as C424 for Pennsylvania Railroad, 640-2 through 640-5 to Union Pacific Railroad 675–678; 678 wrecked 1969, 675–676 sold 1971 to Montreal Locomotive Works and used as lease fleet on Roberval and Saguenay Railway and British Columbia Railway, sold to Devco Railway 1974, renumbered 214-215, scrapped 1984
Chicago and North Western Railway
4
900–903
Three sold to Green Bay and Western 316–318, one to Peabody Coal
Green Bay and Western Railroad
1
310
Pennsylvania Railroad
15
2400–2414
to Penn Central and Conrail (same numbers)
Soo Line Railroad
2
415–416
Total 27

External links

References