Data from [], last accessed 30 November 2008. See also "2-6-4 Tank Locomotives, Portuguese State Railways", Locomotive Magazine, Volume XXVII [27] (15 September 1921), pp. 223-224.
Wikipedia says that these were designed for the CP by Norwegian engineer Olaf Kjelberg and the prototype (070) was the only steam locomotive to be built in Portugal. They were intended for suburban use around Sintra and Azambuja. SLM of Winterthur, Henschel & Sohn, and Kassel contributed locomotives in this class over a 28-year period.
Once the lines were electrified in 1957, the class was retired.
Data from [], last accessed 30 November 2008. See also "2-6-4 Tank Locomotives, Portuguese State Railways", Locomotive Magazine, Volume XXVII [27] (15 September 1921), pp. 223-224.
Wikipedia says that these were designed for the CP by Norwegian engineer Olaf Kjelberg and the prototype (070) was the only steam locomotive to be built in Portugal; see Locobase 9700.
SLM of Winterthur, Henschel & Sohn, and Kassel contributed locomotives in this class over a 28-year period. The 1920 engines shown in this entry had uneven driver spacing with the first two axle centres just about 5" (actually 125 mm) farther apart at 1,1775 mm (69.89") than the second and third at 1,650 mm (64.96")..
CP 070s were intended for suburban use around Sintra and Azambuja, but also worked longer distances, such as the 213 miles (343 km) between Lisbon and Oporto.
Once the lines were electrified in 1957, the class was retired.
Principal Dimensions by Steve Llanso of Middle Run Media | ||
---|---|---|
Class | 070 | 070 |
Locobase ID | 9700 | 20827 |
Railroad | Portuguese Government | Portuguese Government |
Country | Portugal | Portugal |
Whyte | 2-6-4T | 2-6-4T |
Number in Class | 1 | 27 |
Road Numbers | 070 | 071+ |
Gauge | 5'6" | 5'6" |
Number Built | 1 | 27 |
Builder | Oficina Gerans de CP, Lisboa | several |
Year | 1916 | 1916 |
Valve Gear | Walschaert | |
Locomotive Length and Weight | ||
Driver Wheelbase (ft / m) | 11.24 / 3.42 | |
Engine Wheelbase (ft / m) | 34.22 / 10.43 | |
Ratio of driving wheelbase to overall engine wheelbase | 0.33 | |
Overall Wheelbase (engine & tender) (ft / m) | 34.22 / 10.43 | |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | / 18,470 | |
Weight on Drivers (lbs / kg) | 108,930 / 49,410 | |
Engine Weight (lbs / kg) | 185,849 / 84,300 | 181,881 / 82,500 |
Tender Loaded Weight (lbs / kg) | ||
Total Engine and Tender Weight (lbs / kg) | ||
Tender Water Capacity (gals / ML) | 2112 / 8 | 2640 / 10 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 4.40 / 4 | 4.40 / 4 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 61 / 30.50 | |
Geometry Relating to Tractive Effort | ||
Driver Diameter (in / mm) | 59.80 / 1520 | 59.80 / 1520 |
Boiler Pressure (psi / kPa) | 171.10 / 1180 | 174 / 1200 |
High Pressure Cylinders (dia x stroke) (in / mm) | 20.47" x 25.2" / 520x640 | 20.47" x 25.2" / 520x640 |
Tractive Effort (lbs / kg) | 25,681 / 11648.72 | 26,116 / 11846.03 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.17 | |
Heating Ability | ||
Tubes (number - dia) (in / mm) | 150 - 1.772" / 45 | - 1.772" / |
Flues (number - dia) (in / mm) | ||
Flue/Tube length (ft / m) | ||
Firebox Area (sq ft / m2) | 135.63 / 12.60 | |
Grate Area (sq ft / m2) | 27.55 / 2.56 | 27.23 / 2.53 |
Evaporative Heating Surface (sq ft / m2) | 1367 / 127 | 1328 / 123.40 |
Superheating Surface (sq ft / m2) | 503 / 46.70 | |
Combined Heating Surface (sq ft / m2) | 1367 / 127 | 1831 / 170.10 |
Evaporative Heating Surface/Cylinder Volume | 142.42 | 138.35 |
Computations Relating to Power Output (More Information) | ||
Robert LeMassena's Power Computation | 4714 | 4738 |
Same as above plus superheater percentage | 4714 | 6017 |
Same as above but substitute firebox area for grate area | 29,972 | |
Power L1 | 11,803 | |
Power MT | 716.64 |