Hocking Valley class F-1
Chesapeake & Ohio class B-1
United States 1919 16 produced
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 | |