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Nashville, Chattanooga & St. Louis class H7
The H7 was a class of 36 Consolidations built by Baldwin for the NC&StL between 1903 and 1907. Compared to the H6 introduced in 1902, they had a larger tube surface, but were identical in other dimensions. This includ...
General
| Property | Nashville, Chattanooga & St. Louis class H7 rebuilt H7C-40 |
|---|---|
| Built | from 1918 |
| Manufacturers | Nashville |
| Wheel arrangement | 2-8-0 (Consolidation) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Nashville, Chattanooga & St. Louis class H7 rebuilt H7C-40 |
|---|---|
| Length | 18.72 m |
| Wheelbase | 7.21 m |
| Rigid wheelbase | 4.67 m |
| Total wheelbase | 16.02 m |
| Service weight | 77.2 t |
| Adhesive weight | 69.5 t |
| Total weight | 126.7 t |
| Water capacity | 20,820 l |
| Fuel capacity | 9.5 t (coal) |
Boiler
| Property | Nashville, Chattanooga & St. Louis class H7 rebuilt H7C-40 |
|---|---|
| Grate area | 4.329 m² |
| Firebox surface | 17.744 m² |
| Tube heating surface | 157.564 m² |
| Evaporative heating surface | 175.308 m² |
| Superheater surface | 37.626 m² |
| Total heating surface | 212.9 m² |
Power plant
| Property | Nashville, Chattanooga & St. Louis class H7 rebuilt H7C-40 |
|---|---|
| Driver diameter | 1,422 mm |
| Boiler pressure | 12.4 bar |
| Expansion type | simple expansion |
| Cylinders | two, 584 x 711 mm |
Power
| Property | Nashville, Chattanooga & St. Louis class H7 rebuilt H7C-40 |
|---|---|
| Power source | steam |
| Estimated power | 969 kW (1,317 PS) |
| Starting effort | 180.0 kN |
Calculated values
| Property | Nashville, Chattanooga & St. Louis class H7 rebuilt H7C-40 |
|---|---|
| Factor of adhesion | 1 : 3.79 |
| Optimal speed | 32 km/h |
| Power-to-weight ratio | 12.5 kW/t |
| Heating Surface Equivalent | 339.3 m² |
| Cylinder volume/HSE | 1 : 1,123.77 |
| Adhesive weight/Total | 1 : 1.11 |
| Tractive force/Heating surface | 1 : 17.66 |
| Grate area/Heating surface | 1 : 49.19 |
| Firebox/Tube surface | 1 : 8.88 |
| Total/Superheater | 1 : 4.66 |
