Tanana Valley / Tuscarora Valley 4-6-0 "Ten-wheeler" Locomotives of the USA


Class Details by Steve Llanso of Sweat House Media

Class 152 (Locobase 14979)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 45, p. 42. See also Ray Bonnell, "The Tanana Valley Railroad: Some history and Engine No. 1", Sketches of Alaska in Fairbanks Daily News-Miner (nd) archived at http://m.newsminer.com/features/sundays/sketches_of_alaska/article_2f457dbd-43a8-55c7-8cfb-a7fb48798bf5.html . Works number was 53296 in June 1920.

The TVRR's founder, Falcon Joslin, envisioned a Trans-Alaskan road stretching from Fairbanks to Nome, says Ray Bonnell, but "real-world considerations meant the completed railroad reached only 39 miles, as far as Chatanika" The railroad reached Fox and Gilmore in 1905 and end of track at Chatanika in 1907. Revenues steadily slipped, however, and the line declared bankruptcy in 1917.

Much of its main line would taken over by the Alaskan Engineering Commission for its standard-gauge Anchorage-to-Fairbanks portion. The AEC would add a third rail between Happy and Fairbanks, making the Chatanika branch a dual-gauge line.

It was about this time that the AEC bought the new 4-6-0. It was based on a standard-gauge design of 15 years past, but resized for the three-foot width. Its firebox measured just 23" (584 mm) wide. The boiler was pressed to 190 psi and the valves actuated by outside radial valve gear. Baldwin's spec sheet advises that the locomotive was to be "suitable for operation in temperatures of 70 degrees below zero, Fahrenheit."

When the Chatanika branch was closed in the 1930s (put out of business by motor traffic, says Bonnell), the 152 went dormant for a decade until the Alaska Railroad bought it in 1942 to operate on the White Pass & Yukon.

At the end of World War Two, the 152 began its second career in tourist service. The WP&Y sold the engine in 1945 to the Antelope & Western of Roseville, Calif as their 3. In 1963, the Camino Cable & Northern of Hermanie, Pa bought the 3 and owned it for twenty years. Keystone Light Railway Products bought the locomotive in 1974 and sold it in March 1975 to the Huckleberry Railroad in Flint, Mich as their 2.


Class 2 (Locobase 14340)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Vol 53, pp. 322+. See also a brief account of the TVRR at http://freepages.genealogy.rootsweb.ancestry.com/~milliken/jottings/tvrr.html . Works number was 41881 in February 1915.

The TVRR was a narrow-gauge shortline that built 27 miles (43.5 km) of track about 40 miles west of Harrisburg, Pa, between Port Royal to Blair's Mills. between 1892 and 1895. Customers could take either of two daily trains in each direction, one in the morning and one in the afternoon. Riders remembered taking the train to school and traveling to the Leonards Grove fair each year.

The line closed in 1934.

Specifications by Steve Llanso of Sweat House Media
Class1522
Locobase ID14,979 14,340
RailroadTanana ValleyTuscarora Valley
CountryUSAUSA
Whyte4-6-04-6-0
Number in Class11
Road Numbers1522
Gauge3'3'
Number Built11
BuilderBaldwinBaldwin
Year19201916
Valve GearWalschaertStephenson
Locomotive Length and Weight
Driver Wheelbase (ft)10.9210.92
Engine Wheelbase (ft)19.7519.42
Ratio of driving wheelbase to overall engine wheebase 0.55 0.56
Overall Wheelbase (engine & tender) (ft)44.9243.79
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)60,00052,500
Engine Weight (lbs)75,50067,500
Tender Loaded Weight (lbs)56,00044,000
Total Engine and Tender Weight (lbs)131,500111,500
Tender Water Capacity (gals)25002200
Tender Fuel Capacity (oil/coal) (gals/tons)55
Minimum weight of rail (calculated) (lb/yd)3329
Geometry Relating to Tractive Effort
Driver Diameter (in)4444
Boiler Pressure (psi)185160
High Pressure Cylinders (dia x stroke) (in)14" x 20"14" x 20"
Tractive Effort (lbs)14,01012,116
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.28 4.33
Heating Ability
Firebox Area (sq ft)9357.90
Grate Area (sq ft)13.4011.88
Evaporative Heating Surface (sq ft)891797
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)891797
Evaporative Heating Surface/Cylinder Volume250.04223.66
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation24791901
Same as above plus superheater percentage24791901
Same as above but substitute firebox area for grate area17,2059264
Power L151633578
Power MT569.12450.75


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