Columbia River Belt Line 2-8-0 "Consolidation" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class Big Jack (Locobase 14719)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 62, p. 415. Works number was 53037 in February 1920.

Baldwin built this superheated logging Consolidation for the Whitney Company, which operated the CRBL. It was a typical 2-8-0 for that service, although its 11" (279 mm) piston valves were on the large size. The rail line presented relatively modest grades of 1-2% and was laid with 60 lb/yard (30 kg/metre) rail. Still, braking power loomed large and the drivers were held back by both air and steam brake systems.

In 1927, the Whitney Company sold Big Jack to Tidewater Logging of Jewell, Ore, it lost its grand number and became #53 and went to work on the 18 mile (29 km) Astoria Southern.

When the AS Rwy closed in 1943, the 53 was sold to the Cowlitz Chehalis & Cascade of Chehalis, Wash and renumbered 25. The CC&C operated the 25 for another decade before donating to the City of Centralia in 1955.

Principal Dimensions by Steve Llanso of Sweat House Media
ClassBig Jack
Locobase ID14,719
RailroadColumbia River Belt Line
Number in Class1
Road Numbers2501
Number Built1
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)14.25 / 4.34
Engine Wheelbase (ft / m)21.92 / 6.68
Ratio of driving wheelbase to overall engine wheebase 0.65
Overall Wheelbase (engine & tender) (ft / m)50.94 / 15.53
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)143,000 / 64,864
Engine Weight (lbs / kg)159,000 / 72,121
Tender Loaded Weight (lbs / kg)70,000 / 31,752
Total Engine and Tender Weight (lbs / kg)229,000 / 103,873
Tender Water Capacity (gals / ML)3500 / 13.26
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)1200 / 4.50
Minimum weight of rail (calculated) (lb/yd / kg/m)60 / 30
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)50 / 1270
Boiler Pressure (psi / kPa)180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)21" x 26" / 533x660
Tractive Effort (lbs / kg)35,086 / 15914.76
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.08
Heating Ability
Firebox Area (sq ft / m2)165 / 15.33
Grate Area (sq ft / m2)31.40 / 2.92
Evaporative Heating Surface (sq ft / m2)1645 / 152.82
Superheating Surface (sq ft / m2)348 / 32.33
Combined Heating Surface (sq ft / m2)1993 / 185.15
Evaporative Heating Surface/Cylinder Volume157.83
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation5652
Same as above plus superheater percentage6613
Same as above but substitute firebox area for grate area34,749
Power L18062
Power MT497.16

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Wes Barris