Tonopah & Goldfield No. 1 and 2
Sumpter Valley No. 1 and 2
In 1901, Baldwin built two three-foot gauge Moguls of their type 8-26-D for the Chateaugay Railroad in Upstate New York. They got the numbers 15 and 16 and were needed for the iron-making operations of the Chateaugay Iron Company. Unfortunately, 1901 was also the year when the Delaware and Hudson had acquired this line and started to convert it to standard gauge.
Since these locomotives were optimal for steep lines with tight curves, they were instead delivered to the Tonopah Railroad in Nevada. There they became numbers 1 and 2 and entered service until the company became the Tonopah and Goldfield Railroad and also started to convert the line to standard gauge.
In 1906, they were sold again to the Sumpter Valley Railway. There they still carried the numbers 1 and 2 which had been taken over by two older Moguls from 1881 also built by Baldwin which had come from the Utah & Northern Railway. The two new locomotives stayed in service until around 1930.
Technical data
General
- Built
- 1901
- Manufacturers
- Baldwin
- Wheel arrangement
- 2-6-0 (Mogul)
- Gauge
- 914 mm (Three feet)
Dimensions and weights
- Wheelbase
- 5.44 m
- Total wheelbase
- 14.63 m
- Service mass
- 33.9 t
- Adhesion mass
- 30.2 t
- Total mass
- 59.3 t
- Rigid wheelbase
- 3.35 m
- Axle load
- 10.1 t
- Water capacity
- 9,842 l
Boiler
- Grate area
- 1.226 m²
- Firebox surface
- 8.482 m²
- Tube heating surface
- 86.288 m²
- Evaporative heating surface
- 94.77 m²
- Total heating surface
- 94.8 m²
Power plant
- Driver diameter
- 1,118 mm
- Boiler pressure
- 11 bar
- Expansion type
- simple expansion
- Cylinders
- two, 406 x 508 mm
Power
- Power source
- steam
- Estimated power
- 261 kW (355 PS)
- Starting effort
- 70.4 kN
Calculated values
- Factor of adhesion
- 1 : 4.21
- Optimal speed
- 23 km/h
- Power-to-weight ratio
- 7.7 kW/t
- Heating Surface Equivalent
- 137.2 m²
- Cylinder volume/HSE
- 1 : 960.73
- Adhesive weight/Total
- 1 : 1.12
- Tractive force/Heating surface
- 1 : 15.51
- Grate area/Heating surface
- 1 : 77.30
- Firebox/Tube surface
- 1 : 10.17