Denver & Rio Grande Western class C-16
originally class 60N
United States 1877 96 produced
The Denver & Rio Grande had the class 60N built by Grant and Baldwin as standard freight locomotives starting in 1877. These were Consolidations, which were tiny compared to later locomotives on the three-foot gauge. Baldwin's locomotives had a larger boiler than Grant's. They later received the class designation C-16 from the Denver & Rio Grande Western. Some later received slightly larger wheels and higher boiler pressure. After the new Mikados took over the majority of traffic, the Class 60N was significantly decimated in the 1930s. It could only remain in use where no other locomotives could be used due to the axle load. Today Grant's number 223 remains, having been under restoration for years.
Technical data
General
| Property | Grant | Baldwin |
|---|---|---|
| Built | 1877-1882 | |
| Manufacturers | Grant | Baldwin |
| Wheel arrangement | 2-8-0 (Consolidation) | |
| Gauge | 914 mm (Three feet) | |
Dimensions and weights
| Property | Grant | Baldwin |
|---|---|---|
| Wheelbase | 5.28 m | 5.44 m |
| Total wheelbase | 12.78 m | 12.74 m |
| Service mass | 27.2 t | |
| Adhesion mass | 22.7 t | |
| Total mass | 50.6 t | |
| Rigid wheelbase | 3.45 m | |
| Axle load | 5.7 t | |
| Water capacity | 9,464 l | |
| Fuel capacity | 5.4 t (coal) | |
Boiler
| Property | Grant | Baldwin |
|---|---|---|
| Grate area | 1.301 m² | 1.551 m² |
| Firebox surface | 6.689 m² | 8.175 m² |
| Tube heating surface | 70.513 m² | 70.978 m² |
| Evaporative heating surface | 77.203 m² | 79.153 m² |
| Total heating surface | 77.2 m² | 79.2 m² |
Power plant
| Property | Grant | Baldwin |
|---|---|---|
| Driver diameter | 914 mm | |
| Boiler pressure | 9 bar | |
| Expansion type | simple expansion | |
| Cylinders | two, 381 x 508 mm | |
Power
| Property | Grant | Baldwin |
|---|---|---|
| Power source | steam | |
| Estimated power | 164 kW (223 PS) | 201 kW (273 PS) |
| Starting effort | 61.4 kN | |
Calculated values
| Property | Grant | Baldwin |
|---|---|---|
| Factor of adhesion | 1 : 3.62 | |
| Optimal speed | 16 km/h | 19 km/h |
| Power-to-weight ratio | 6.0 kW/t | 7.4 kW/t |
| Heating Surface Equivalent | 110.6 m² | 120.0 m² |
| Cylinder volume/HSE | 1 : 1,046.87 | 1 : 965.05 |
| Adhesive weight/Total | 1 : 1.20 | |
| Tractive force/Heating surface | 1 : 16.62 | 1 : 16.21 |
| Grate area/Heating surface | 1 : 59.34 | 1 : 51.03 |
| Firebox/Tube surface | 1 : 10.54 | 1 : 8.68 |
