Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 31, p. 76. Works number was 32160 in November 1907.
This Prairie worked for several logging-related railways. When the Hobart Southern was abandoned in December 1937, the 8 was sold to the Clover Valley Lumber Company. After another 18 years in service, the 8 moved on to the Feather River Lumber Company.
In 1958, the 8 moved into museum railroading when it was sold to the Plumas County Fair. 27 years later, Plumas County sold the 8 to the Feather River Rail Society. And the FRRS sold the locomotive to the Virginia & Truckee.
Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 23, p. 204. Works number was 18665 in February 1901.
The SNW & LC was headquartered in Hobart Mills, California. In 1916, the 8-mile railway supporting the mill was renamed the Hobart Estate. In 1924, the again-renamed Hobart Southern became a wholly owned subsidiary of the Southern Pacific. It was abandoned in 1937, but the #4 wasn't scrapped until 1945.
Principal Dimensions by Steve Llanso of Middle Run Media | ||
---|---|---|
Class | 8 | W S Hobart |
Locobase ID | 12473 | 12471 |
Railroad | Sierra Nevada Wood & Lumber Company | Sierra Nevada Wood & Lumber Company |
Country | USA | USA |
Whyte | 2-6-2 | 2-6-2 |
Number in Class | 1 | 1 |
Road Numbers | 8 | 4 |
Gauge | Std | Std |
Number Built | 1 | 1 |
Builder | Burnham, Williams & Co | Burnham, Williams & Co |
Year | 1907 | 1901 |
Valve Gear | Stephenson | Stephenson |
Locomotive Length and Weight | ||
Driver Wheelbase (ft / m) | 7.67 / 2.34 | 8 / 4.80 |
Engine Wheelbase (ft / m) | 23.83 / 7.26 | 22.75 / 7.42 |
Ratio of driving wheelbase to overall engine wheelbase | 0.32 | 0.35 |
Overall Wheelbase (engine & tender) (ft / m) | ||
Axle Loading (Maximum Weight per Axle) (lbs / kg) | ||
Weight on Drivers (lbs / kg) | 60,000 / 27,216 | 56,000 / 25,401 |
Engine Weight (lbs / kg) | 108,000 / 48,988 | 76,000 / 34,473 |
Tender Loaded Weight (lbs / kg) | 70,000 / 31,752 | 47,000 / 21,319 |
Total Engine and Tender Weight (lbs / kg) | 178,000 / 80,740 | 123,000 / 55,792 |
Tender Water Capacity (gals / ML) | 3500 / 13.26 | 2000 / 7.58 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | ||
Minimum weight of rail (calculated) (lb/yd / kg/m) | 33 / 16.50 | 31 / 15.50 |
Geometry Relating to Tractive Effort | ||
Driver Diameter (in / mm) | 44 / 1118 | 44 / 1118 |
Boiler Pressure (psi / kPa) | 160 / 1100 | 160 / 1100 |
High Pressure Cylinders (dia x stroke) (in / mm) | 16" x 24" / 406x610 | 13" x 22" / 330x559 |
Tractive Effort (lbs / kg) | 18,991 / 8614.18 | 11,492 / 5212.69 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.16 | 4.87 |
Heating Ability | ||
Tubes (number - dia) (in / mm) | 240 - 2" / 51 | 116 - 2" / 51 |
Flues (number - dia) (in / mm) | ||
Flue/Tube length (ft / m) | 11.51 / 3.51 | 11.50 / 3.51 |
Firebox Area (sq ft / m2) | 128 / 11.90 | 74 / 6.88 |
Grate Area (sq ft / m2) | 16 / 1.49 | 13.30 / 1.24 |
Evaporative Heating Surface (sq ft / m2) | 1567 / 145.63 | 767 / 71.28 |
Superheating Surface (sq ft / m2) | ||
Combined Heating Surface (sq ft / m2) | 1567 / 145.63 | 767 / 71.28 |
Evaporative Heating Surface/Cylinder Volume | 280.32 | 226.92 |
Computations Relating to Power Output (More Information) | ||
Robert LeMassena's Power Computation | 2560 | 2128 |
Same as above plus superheater percentage | 2560 | 2128 |
Same as above but substitute firebox area for grate area | 20,480 | 11,840 |
Power L1 | 4632 | 3947 |
Power MT | 510.59 | 466.16 |