The ALCO DL420 was the prototype for the ALCO S-5 diesel-electric switcher. ALCO built the single unit in August 1951 around an early six-cylinder 251 engine rated at 800 horsepower, using subassemblies from the RS-3 road switcher. It rode on two-axle trucks in a B-B arrangement and was the first ALCO switcher to have a front radiator opening, a feature that defined the later S-5. The one-of-a-kind locomotive worked at the company test facility at Niskayuna and then as shop switcher number 6 at Schenectady before it was scrapped in the late 1950s.
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Source ALCO DL420 (Wikipedia)
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Source ALCO DL420 (Wikipedia)
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Source ALCO DL420 (Wikipedia)LeadQuote, Lead
The ALCO DL420 was the prototype ALCO S-5 diesel-electric switcher locomotive.
Sources
1. ALCO DL420 (Wikipedia)
Lead, build date
It was built in August, 1951 using an early six-cylinder 251 engine rated at 800 horsepower (600 kW) and RS-3 subassemblies in its construction.
Lead, power
It was built in August, 1951 using an early six-cylinder 251 engine rated at 800 horsepower (600 kW) and RS-3 subassemblies in its construction.
Lead, fate
It was scrapped in the late 1950s.
Lead
The ALCO DL420 was the prototype ALCO S-5 diesel-electric switcher locomotive.
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