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Rete Mediterranea No. 4501 to 4530
The RM ordered the 4-8-0 locomotives 4501 to 4530 in 1901 due to increasing freight volumes on the Giovi Pass. There they were the successors of the 0-8-0 series 4201 to 4500 (the later FS grupo 420) and still had fou...
General
| Property | Rete Mediterranea No. 4501 to 4530 Remove |
|---|---|
| Built | 1906 |
| Manufacturers | Officine Meccaniche |
| Wheel arrangement | 4-8-0 (Twelve-wheeler) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Rete Mediterranea No. 4501 to 4530 Remove |
|---|---|
| Length | 17.57 m |
| Length loco | 10.67 m |
| Wheelbase | 7.54 m |
| Rigid wheelbase | 3.04 m |
| Total wheelbase | 13.97 m |
| Empty weight | 68.4 t |
| Service weight | 75.4 t |
| Adhesive weight | 58.3 t |
| Axle load | 15 t |
| Total weight | 110.2 t |
| Water capacity | 13,000 l |
| Fuel capacity | 4.5 t (coal) |
Boiler
| Property | Rete Mediterranea No. 4501 to 4530 Remove |
|---|---|
| Grate area | 3.5 m² |
| Firebox surface | 12 m² |
| Tube heating surface | 174.7 m² |
| Evaporative heating surface | 186.7 m² |
| Total heating surface | 186.7 m² |
Power plant
| Property | Rete Mediterranea No. 4501 to 4530 Remove |
|---|---|
| Driver diameter | 1,400 mm |
| Boiler pressure | 14 bar |
| Expansion type | compound |
| Cylinders | two, HP: 540 x 680 mm and LP: 800 x 680 mm |
Power
| Property | Rete Mediterranea No. 4501 to 4530 Remove |
|---|---|
| Power source | steam |
| Indicated power | 736 kW (1,001 PS) |
| Top speed | 65 km/h |
| Starting effort | 115.8 kN |
| Starting effort simple | 138.9 kN |
Calculated values
| Property | Rete Mediterranea No. 4501 to 4530 Remove |
|---|---|
| Factor of adhesion | 1 : 4.94 |
| Optimal speed | 39 km/h |
| Power-to-weight ratio | 9.8 kW/t |
| Heating Surface Equivalent | 246.7 m² |
| Cylinder volume/HSE | 1 : 1,324.03 |
| Adhesive weight/Total | 1 : 1.29 |
| Tractive force/Heating surface | 1 : 12.95 |
| Grate area/Heating surface | 1 : 53.34 |
| Firebox/Tube surface | 1 : 14.56 |
