Erie class E-1
United States 1899 29 produced
The class E-1 of the Erie Railroad consisted of 29 Atlantic express locomotives built by Baldwin between 1899 and 1901 and rated for speeds of 100 mph. They were Camelback locomotives with a square Wootten firebox measuring 96 by 96 inches.
Propulsion was provided by a Vauclain compound engine, i.e. with high and low pressure cylinders one above the other. A rebuild began as early as 1904, in which the four cylinders were replaced by two cylinders with simple expansion. One also increased the distance between the tube sheets by six inches to increase the heating surface.
Technical data
General
| Property | as built | rebuilt |
|---|---|---|
| Built | 1899-1901 | 1904-1906 |
| Manufacturers | Baldwin | |
| Wheel arrangement | 4-4-2 (Atlantic) | |
| Gauge | 1,435 mm (Standard gauge) | |
Dimensions and weights
| Property | as built | rebuilt |
|---|---|---|
| Wheelbase | 7.54 m | |
| Total wheelbase | 16.09 m | |
| Service mass | 64.4 t | 70.4 t |
| Adhesion mass | 37.2 t | 34.4 t |
| Total mass | 117.4 t | 123.3 t |
| Rigid wheelbase | 2.01 m | |
| Water capacity | 22,712 l | |
| Fuel capacity | 10.9 t (coal) | |
| Axle load | 19 t | |
Boiler
| Property | as built | rebuilt |
|---|---|---|
| Grate area | 5.946 m² | |
| Firebox surface | 14.865 m² | |
| Tube heating surface | 196.026 m² | 201.693 m² |
| Evaporative heating surface | 210.89 m² | 216.557 m² |
| Total heating surface | 210.9 m² | 216.6 m² |
Power plant
| Property | as built | rebuilt |
|---|---|---|
| Driver diameter | 1,930 mm | |
| Boiler pressure | 13.8 bar | |
| Expansion type | compound | simple expansion |
| Cylinders | four, HP: 330 x 660 mm and LP: 559 x 660 mm | two, 457 x 660 mm |
Power
| Property | as built | rebuilt |
|---|---|---|
| Power source | steam | |
| Estimated power | 1,119 kW (1,521 PS) | 1,137 kW (1,546 PS) |
| Top speed | 161 km/h | |
| Starting effort | 64.8 kN | 83.8 kN |
| Starting effort simple | 77.8 kN | |
Calculated values
| Property | as built | rebuilt |
|---|---|---|
| Factor of adhesion | 1 : 5.63 | 1 : 4.02 |
| Optimal speed | 106 km/h | 84 km/h |
| Power-to-weight ratio | 17.4 kW/t | 16.2 kW/t |
| Heating Surface Equivalent | 285.2 m² | 290.9 m² |
| Cylinder volume/HSE | 1 : 964.41 | 1 : 745.45 |
| Adhesive weight/Total | 1 : 1.73 | 1 : 2.05 |
| Tractive force/Heating surface | 1 : 6.42 | 1 : 8.08 |
| Grate area/Heating surface | 1 : 35.47 | 1 : 36.42 |
| Firebox/Tube surface | 1 : 13.19 | 1 : 13.57 |
