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Paris-Orléans No. 4701 to 4712
The numbers 4701 to 4712 of the PO were 4-8-0 express locomotives rebuilt by Chapelon from Pacifics of the 4501 to 4600 range in 1932 and 1933. The reason for the rebuild was that trains of 650 to 700 tonnes had to be...
General
| Property | Paris-Orléans No. 4701 to 4712Remove |
|---|---|
| Built | 1932-1933 |
| Manufacturers | Tours |
| Wheel arrangement | 4-8-0 (Twelve-wheeler) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Paris-Orléans No. 4701 to 4712Remove |
|---|---|
| Length | 20.32 m |
| Length loco | 13.01 m |
| Wheelbase | 10.00 m |
| Rigid wheelbase | 6.00 m |
| Empty weight | 97.8 t |
| Service weight | 106.3 t |
| Adhesive weight | 75.5 t |
| Axle load | 18.9 t |
| Total weight | 163.7 t |
| Water capacity | 26,000 l |
| Fuel capacity | 8 t (coal) |
Boiler
| Property | Paris-Orléans No. 4701 to 4712Remove |
|---|---|
| Grate area | 3.76 m² |
| Firebox surface | 24.9 m² |
| Tube heating surface | 191 m² |
| Evaporative heating surface | 215.9 m² |
| Superheater surface | 60.6 m² |
| Total heating surface | 276.5 m² |
Power plant
| Property | Paris-Orléans No. 4701 to 4712Remove |
|---|---|
| Driver diameter | 1,850 mm |
| Boiler pressure | 20 bar |
| Expansion type | compound |
| Cylinders | four, HP: 440 x 650 mm and LP: 640 x 650 mm |
Power
| Property | Paris-Orléans No. 4701 to 4712Remove |
|---|---|
| Power source | steam |
| Indicated power | 3,091 kW (4,203 PS) |
| Top speed | 120 km/h |
| Starting effort | 157.0 kN |
| Starting effort simple | 188.5 kN |
Calculated values
| Property | Paris-Orléans No. 4701 to 4712Remove |
|---|---|
| Factor of adhesion | 1 : 4.71 |
| Optimal speed | 121 km/h |
| Power-to-weight ratio | 29.1 kW/t |
| Heating Surface Equivalent | 461.6 m² |
| Cylinder volume/HSE | 1 : 881.22 |
| Adhesive weight/Total | 1 : 1.41 |
| Tractive force/Heating surface | 1 : 11.86 |
| Grate area/Heating surface | 1 : 73.54 |
| Firebox/Tube surface | 1 : 7.67 |
| Total/Superheater | 1 : 3.56 |
