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Hocking Valley class F-1

Chesapeake & Ohio class B-1

United States 1919 16 produced
No. 2954 in May 1939 at Potomac Yard, Virginia Bruce D. Fales / collection Taylor Rush

In 1920, the Hocking Valley Railroad received 16 freight locomotives from the Lehigh Valley with a 2-10-2 wheel arrangement, which, with a driver diameter of 63 inches, were too slow for their requirements. The new operator gave the almost new locomotives the class designation F-1. A few years later, six went to the Pere Marquette. The Hocking Valley was taken over by the Chesapeake & Ohio in 1930 and those ten remaining locomotives got the class designation B-1, that had been carried by two Forneys until 1913. They got bigger tenders in 1940 and were used until 1952.

Technical data

General

Property as built larger tender
Built 1919 1940
Manufacturers Baldwin
Wheel arrangement 2-10-2 (Santa Fé)
Gauge 1,435 mm (Standard gauge)

Dimensions and weights

Property as built larger tender
Service mass 169.7 t
Adhesion mass 133.2 t
Total mass 271.3 t 308 t
Axle load 27.9 t
Water capacity 45,425 l 60,567 l
Fuel capacity 15.9 t (coal) 20.4 t (coal)

Boiler

Property as built larger tender
Grate area 9.29 m²
Firebox surface 37.904 m²
Tube heating surface 406.823 m²
Evaporative heating surface 444.727 m²
Superheater surface 109.533 m²
Total heating surface 554.3 m²

Power plant

Property as built larger tender
Driver diameter 1,600 mm
Boiler pressure 14.1 bar
Expansion type simple expansion
Cylinders two, 737 x 813 mm

Power

Property as built larger tender
Power source steam
Estimated power 2,983 kW (4,056 PS)
Starting effort 331.1 kN

Calculated values

Property as built larger tender
Factor of adhesion 1 : 3.95
Optimal speed 55 km/h
Power-to-weight ratio 17.6 kW/t
Heating Surface Equivalent 853.3 m²
Cylinder volume/HSE 1 : 811.82
Adhesive weight/Total 1 : 1.27
Tractive force/Heating surface 1 : 12.48
Grate area/Heating surface 1 : 59.66
Firebox/Tube surface 1 : 10.73
Total/Superheater 1 : 4.06
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