Leopoldina No. 306 to 333
Brazil 1926 28 produced
The first superheated Pacifics the meter gauge Leopoldina received were numbers 306 to 315. They were delivered by Beyer, Peacock & Co. in 1925. Ten and eight more followed in 1927 and 1928, respectively, bringing the total to 28.
They had a Belpaire firebox that burned wood. Despite the small driving wheel diameter of only five feet, they were used for express and night trains. Their use in this role only ended with the introduction of diesel traction. Number 327 has been preserved to this day and pulled tourist trains in different regions.
Technical data
General
- Built
- 1926-1928
- Manufacturers
- Beyer, Peacock & Co.
- Wheel arrangement
- 4-6-2 (Pacific)
- Gauge
- 1,000 mm (Meter gauge)
Dimensions and weights
- Length
- 17.35 m
- Wheelbase
- 7.75 m
- Total wheelbase
- 14.25 m
- Service mass
- 45.9 t
- Adhesion mass
- 30 t
- Total mass
- 72.1 t
- Rigid wheelbase
- 2.90 m
- Axle load
- 10.2 t
- Water capacity
- 5,076 l
- Fuel capacity
- 4.1 t (wood)
Boiler
- Grate area
- 1.64 m²
- Firebox surface
- 10.498 m²
- Tube heating surface
- 85.192 m²
- Evaporative heating surface
- 95.69 m²
- Superheater surface
- 13.657 m²
- Total heating surface
- 109.3 m²
Power plant
- Driver diameter
- 1,270 mm
- Boiler pressure
- 11.7 bar
- Expansion type
- simple expansion
- Cylinders
- two, 432 x 559 mm
Power
- Power source
- steam
- Estimated power
- 522 kW (710 PS)
- Starting effort
- 81.7 kN
Calculated values
- Factor of adhesion
- 1 : 3.60
- Optimal speed
- 39 km/h
- Power-to-weight ratio
- 11.4 kW/t
- Heating Surface Equivalent
- 175.5 m²
- Cylinder volume/HSE
- 1 : 932.57
- Adhesive weight/Total
- 1 : 1.53
- Tractive force/Heating surface
- 1 : 15.61
- Grate area/Heating surface
- 1 : 66.68
- Firebox/Tube surface
- 1 : 8.12
- Total/Superheater
- 1 : 7.01
