Central de Aragón No. 201 to 206
Spanish State Railways 282.0401 to 0406 and 0421 to 0430
For the expected increase in traffic towards the French border, the Central de Aragón ordered two types of Garratts for express and freight traffic. The locomotives for freight service were designed as double Mikados and were built by Babcock & Wilcox after plans by Maffei of Munich. The six locomotives delivered in 1931 were numbered 201 to 206 and dubbed “Garratts pequeñas” (small Garratts) in reference to their express counterparts.
When they were incorporated into the RENFE, they became 282-0401 to 0406, whereby the 282 was to be understood as “two times 141”. Between 1955 and 1958 they were converted to oil firing and renamed 282F. In 1961, ten more were built which were among the last Garratts to be completed. They were retired between 1971 and 1973 and 282F-0421 was preserved in running condition.
Technical data
General
| Property | FCA | RENFE |
|---|---|---|
| Built | 1931 | 1961 |
| Manufacturers | Babcock & Wilcox | |
| Wheel arrangement | 2-8-2+2-8-2T (Double Mikado (Garratt)) | |
| Gauge | 1,668 mm (Iberian broad gauge) | |
Dimensions and weights
| Property | FCA | RENFE |
|---|---|---|
| Length | 25.36 m | |
| Wheelbase | 22.50 m | |
| Service mass | 164 t | 173 t |
| Adhesion mass | 109.7 t | 116 t |
| Rigid wheelbase | 5.50 m | |
| Axle load | 13.7 t | 14.8 t |
| Water capacity | 22,000 l | |
Boiler
| Property | FCA | RENFE |
|---|---|---|
| Grate area | 4.2 m² | |
| Firebox surface | 15.89 m² | 15.7 m² |
| Tube heating surface | 180.9 m² | 181.3 m² |
| Evaporative heating surface | 196.79 m² | 197 m² |
| Superheater surface | 68.4 m² | 69.4 m² |
| Total heating surface | 265.2 m² | 266.4 m² |
Power plant
| Property | FCA | RENFE |
|---|---|---|
| Driver diameter | 1,200 mm | |
| Boiler pressure | 14.7 bar | |
| Expansion type | simple expansion | |
| Cylinders | four, 440 x 610 mm | |
Power
| Property | FCA | RENFE |
|---|---|---|
| Power source | steam | |
| Estimated power | 1,400 kW (1,903 PS) | |
| Top speed | 60 km/h | |
| Starting effort | 245.9 kN | |
Calculated values
| Property | FCA | RENFE |
|---|---|---|
| Factor of adhesion | 1 : 4.38 | 1 : 4.63 |
| Optimal speed | 35 km/h | |
| Power-to-weight ratio | 8.5 kW/t | 8.1 kW/t |
| Heating Surface Equivalent | 413.0 m² | 414.3 m² |
| Cylinder volume/HSE | 1 : 898.24 | 1 : 895.51 |
| Adhesive weight/Total | 1 : 1.49 | |
| Tractive force/Heating surface | 1 : 19.37 | 1 : 19.28 |
| Grate area/Heating surface | 1 : 63.14 | 1 : 63.43 |
| Firebox/Tube surface | 1 : 11.38 | 1 : 11.55 |
| Total/Superheater | 1 : 2.88 | 1 : 2.84 |
