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French Western Railway No. 2701 to 2820 and French State Railway (État) No. 501 to 620
Since the No. 2501 to 2540 ten-wheelers had drivers too small for express service, the French Ouest took these as basis for a new type of express locomotives built from 1901. They got larger drivers with a diameter of...
General
| Property | French Western Railway No. 2701 to 2820 and French State Railway (État) No. 501 to 620 Remove |
|---|---|
| Built | 1901-1908 |
| Manufacturers | Sotteville, Fives-Lille, SFCM, Borsig, Henschel, Batignolles-Châtillon |
| Wheel arrangement | 4-6-0 (Ten-wheeler) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | French Western Railway No. 2701 to 2820 and French State Railway (État) No. 501 to 620 Remove |
|---|---|
| Length loco | 10.83 m |
| Wheelbase | 8.22 m |
| Rigid wheelbase | 4.30 m |
| Service weight | 69.7 t |
| Adhesive weight | 50 t |
| Axle load | 16.7 t |
| Total weight | 107.7 t |
| Water capacity | 18,000 l |
| Fuel capacity | 5 t (coal) |
Boiler
| Property | French Western Railway No. 2701 to 2820 and French State Railway (État) No. 501 to 620 Remove |
|---|---|
| Grate area | 2.8 m² |
| Firebox surface | 13.57 m² |
| Tube heating surface | 121.65 m² |
| Evaporative heating surface | 135.22 m² |
| Superheater surface | 38.2 m² |
| Total heating surface | 173.4 m² |
Power plant
| Property | French Western Railway No. 2701 to 2820 and French State Railway (État) No. 501 to 620 Remove |
|---|---|
| Driver diameter | 1,940 mm |
| Boiler pressure | 15 bar |
| Expansion type | compound |
| Cylinders | four, HP: 380 x 640 mm and LP: 550 x 640 mm |
Power
| Property | French Western Railway No. 2701 to 2820 and French State Railway (État) No. 501 to 620 Remove |
|---|---|
| Power source | steam |
| Estimated power | 950 kW (1,292 PS) |
| Top speed | 110 km/h |
| Starting effort | 82.2 kN |
| Starting effort simple | 98.7 kN |
Calculated values
| Property | French Western Railway No. 2701 to 2820 and French State Railway (État) No. 501 to 620 Remove |
|---|---|
| Factor of adhesion | 1 : 5.97 |
| Optimal speed | 71 km/h |
| Power-to-weight ratio | 13.6 kW/t |
| Heating Surface Equivalent | 279.5 m² |
| Cylinder volume/HSE | 1 : 1,063.51 |
| Adhesive weight/Total | 1 : 1.39 |
| Tractive force/Heating surface | 1 : 9.90 |
| Grate area/Heating surface | 1 : 61.94 |
| Firebox/Tube surface | 1 : 8.96 |
| Total/Superheater | 1 : 3.54 |
