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Boston & Maine class T-1
In 1928, the Boston & Maine procured their first 20 Berkshire-type locomotives from Lima. This meant a leading axle , four driving axles and a two-axle bogie under the firebox . Thanks to the bogie , the grate area co...
General
| Property | Boston & Maine class T-1 Remove |
|---|---|
| Built | 1929 |
| Manufacturers | Lima |
| Wheel arrangement | 2-8-4 (Berkshire) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Boston & Maine class T-1 Remove |
|---|---|
| Wheelbase | 12.71 m |
| Rigid wheelbase | 5.03 m |
| Service weight | 184.6 t |
| Adhesive weight | 118.8 t |
| Axle load | 29.9 t |
| Total weight | 333.6 t |
| Water capacity | 66,245 l |
| Fuel capacity | 20.9 t (coal) |
Boiler
| Property | Boston & Maine class T-1 Remove |
|---|---|
| Grate area | 9.29 m² |
| Firebox surface | 37.626 m² |
| Tube heating surface | 439.246 m² |
| Evaporative heating surface | 476.872 m² |
| Superheater surface | 198.441 m² |
| Total heating surface | 675.3 m² |
Power plant
| Property | Boston & Maine class T-1 Remove |
|---|---|
| Driver diameter | 1,600 mm |
| Boiler pressure | 16.5 bar |
| Expansion type | simple expansion |
| Cylinders | two, 711 x 762 mm |
Power
| Property | Boston & Maine class T-1 Remove |
|---|---|
| Power source | steam |
| Estimated power | 3,505 kW (4,765 PS) |
| Starting effort | 338.8 kN |
| Starting effort booster | 53.379 kN |
Calculated values
| Property | Boston & Maine class T-1 Remove |
|---|---|
| Factor of adhesion | 1 : 3.44 |
| Optimal speed | 63 km/h |
| Power-to-weight ratio | 19.0 kW/t |
| Heating Surface Equivalent | 1,061.9 m² |
| Cylinder volume/HSE | 1 : 570.14 |
| Adhesive weight/Total | 1 : 1.55 |
| Tractive force/Heating surface | 1 : 10.48 |
| Grate area/Heating surface | 1 : 72.69 |
| Firebox/Tube surface | 1 : 11.67 |
| Total/Superheater | 1 : 2.40 |
