San Joaquin & Eastern 4-6-0 "Ten-wheeler" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class 201 (Locobase 14335)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volumes 53, pp. 298+. See also the Sierra Historical Society's account of the SJ&E on . Works number was 41472 in June 1914.

Northern California's dam-building boom included the Big Creek Dam and Huntington Lake, whose construction by Pacific Light & Power directly prompted the building of the "crookedest railway in the world." To construct the 56-mile (90.2 km) line in 157 days in 1912 was an astonishing feat, given the 1,073 curves, 255 steep grades, and 43 wooden trestles. The average grade measured 5.3% and the sharpest curve bent around at 60 degrees. Rail weights ranged from 52-61 lb/yard (26-30.5 kg/metre).

Only geared Climax and Shay locomotives could manage the steep grades from Auberry and the Big Creek site. The 201 worked the flatter territory between Auberry and El Prado. The long-suffering passengers considered the 5-hour schedule over pretty rough track and the 10 cents/mile fare (about 500% of the average rate) and dubbed the road the Slow, Jerky & Expensive.

When the SJ&E closed in 1933, the 201 went into storage for a short time, then was sold in 1936 to the Modesto & Empire Traction Company as their #6.. They scrapped the engine in January 1948.

Specifications by Steve Llanso of Sweat House Media
Locobase ID14335
RailroadSan Joaquin & Eastern
Number in Class1
Road Numbers201
Number Built1
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase10.50'
Engine Wheelbase20.58'
Ratio of driving wheelbase to overall engine wheebase 0.51
Overall Wheelbase (engine & tender)48.79'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers90000 lbs
Engine Weight115000 lbs
Tender Light Weight90000 lbs
Total Engine and Tender Weight205000 lbs
Tender Water Capacity4500 gals
Tender Fuel Capacity (oil/coal)2000 gals
Minimum weight of rail (calculated)50 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter56"
Boiler Pressure180 psi
Cylinders (dia x stroke)18" x 24"
Tractive Effort21245 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.24
Heating Ability
Firebox Area124 sq. ft
Grate Area21.20 sq. ft
Evaporative Heating Surface1385 sq. ft
Superheating Surface
Combined Heating Surface1385 sq. ft
Evaporative Heating Surface/Cylinder Volume195.94
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation3816
Same as above plus superheater percentage3816
Same as above but substitute firebox area for grate area22320
Power L14765
Power MT350.17

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