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Central Vermont class T-3a
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United States | 1928
10 produced
No. 702 on a works photo
No. 702 on a works photo
collection Taylor Rush

In 1928, ALCO-Schenectady delivered ten 2-10-4 “Texas” locomotives to the Central Vermont which were relatively light for their wheel arrangement. But at 419,000 pounds for the locomotive and a total with tender of 688,600 pounds, they were still the heaviest locomotives ever in service in New England. So there are reports that they shook the ground and damaged the rails. They carried the numbers 700 to 709.

Even though the starting tractive effort calculated using the usual formula was 82,620 pounds, ALCO gives 76,800 pounds due to the limited cutoff. Additionally, the booster provided 13,100 pounds. They had thermic syphons, arch tubes and an Elasco K-50 feed water heater. They were retired between 1954 and 1959.

General
Built1928
ManufacturerALCO
Axle config2-10-4 (Texas) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Wheelbase44 ft 2 in
Rigid wheelbase22 ft
Total wheelbase82 ft 2 1/4 in
Service weight419,000 lbs
Adhesive weight285,000 lbs
Total weight57,000 lbs
Axle load688,600 lbs
Water capacity13,500 us gal
Fuel capacity40,000 lbs (coal)
Boiler
Grate area84.4 sq ft
Firebox area423 sq ft
Tube heating area4,280 sq ft
Evaporative heating area4,703 sq ft
Superheater area2,208 sq ft
Total heating area6,911 sq ft
Power Plant
Driver diameter60 in
Boiler pressure250 psi
Expansion typesimple
Cylinderstwo, 27 x 32 in
Power
Power sourcesteam
Estimated power4,200 hp (3,132 kW)
Starting effort82,620 lbf
Booster13,100 lbf
Calculated Values
Optimal speed32 mph
steam locomotive
freight
booster
last changed: 01/2025
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