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Delaware & Hudson No 1400, 1401 and 1402
United States | 1924 | 3 produced
No. 1400 “Horatio Allen”
No. 1400 “Horatio Allen”
Railway and Locomotive Engineering, January 1925

Between 1924 and 1930, the Delaware & Hudson had three high-pressure locomotives with a 2-8-0 wheel arrangement built by ALCO-Schenectady. What they all had in common was the Mühlfeld boiler, which had a large water tube firebox. At the front there were two large drums that lay on top of the boiler barrel. All three locomotives were two-cylinder compounds with a two-axle booster on the tender.

The first was number 1400 named “Horatio Allen”, built in 1924. It had a boiler pressure of 350 psi (24.1 bars). In 1927, No. 1401 “John B. Jervis” was built, which had a boiler pressure of 400 psi (27.6 bars) and smaller cylinders. The boiler was later fully enclosed. In 1930 the No. 1402 “James Archibald” finally followed with a significantly increased boiler pressure of 500 psi (34.5 bar). Its boiler was also fully enclosed.

Since the significantly more complicated maintenance was not worth it in any way compared to the gain in efficiency, all of them were retired by 1935. In 1933, the D&H had No. 1402 “L.F. Loree” built as its fourth high-pressure locomotive with a 4-8-0 wheel arrangement, which suffered the same fate.

Axle config2-8-0 (Consolidation) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Wheelbase29 ft
Fixed wheelbase18 ft
Service weight347,228 lbs337,307 lbs354,944 lbs
Adhesive weight297,624 lbs295,860 lbs299,828 lbs
Total weight545,864 lbs641,544 lbs630,521 lbs
Axle load74,406 lbs73,965 lbs74,957 lbs
Water capacity9,000 us gal16,000 us gal14,000 us gal
Fuel capacity33,000 lbs (coal)43,000 lbs (coal)35,000 lbs (coal)
Power sourcesteam
Indicated power3,560 hp (2,655 kW)3,440 hp (2,565 kW)
Estimated power4,500 hp (3,356 kW)
Optimal speed35 mph33 mph40 mph
Starting effort65,088 lbf66,311 lbf71,470 lbf
with start valve78,106 lbf79,573 lbf85,764 lbf
Power Plant
Driver diameter57 in63 in
Boiler pressure350 psi400 psi500 psi
Expansion typecompound
Cylinderstwo, HP: 23 1/2 x 30 in
and LP: 41 x 30 in
two, HP: 22 1/4 x 30 in
and LP: 38 3/8 x 30 in
two, HP: 20 1/2 x 32 in
and LP: 39 1/2 x 32 in
Grate area71.5 sq ft82 sq ft
Firebox area1,188 sq ft1,213 sq ft1,122 sq ft
Tube heating area2,011 sq ft1,957 sq ft2,323 sq ft
Evaporative heating area3,199 sq ft3,170 sq ft3,445 sq ft
Superheater area576 sq ft700 sq ft1,044 sq ft
Total heating area3,775 sq ft3,870 sq ft4,489 sq ft
Calculated Values
steam locomotive
intermediate pressure
last changed: 03/2024

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