Trisha Shetty

ALCO S 5

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Power type  Diesel-electric
Serial number  80915–80921
Total produced  7
Builder  ALCO
Build date  June 1954
ALCO S-5
Model  S-5 (Specification DL421 and DL421A)

The Alco S-5 (DL 421A) was a diesel-electric locomotive of the switcher type rated at 800 horsepower (600 kW), that rode on two-axle trucks, having a B-B wheel arrangement.

This was Alco's second attempt to build a replacement 251-engined switcher to replace the 539-engined S-3 and S-4. Only seven were sold. The demonstrator unit was ALCO specification DL421 and the six production units were ALCO specification DL421A. Alco fitted the 251A engine in its replacement, the S-6 with power output raised by 100 horsepower (75 kW).

References

ALCO S-5 Wikipedia


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