Although in some ways these Santa Fes anticipated the USRA Heavy 2-10-2-B (Locobase 90) design in many respects (cylinder volume, valve gear, big 16" (406 mm) piston valves, e.g.) that would emerge a few months later, they had shorter combustion chambers and fewer but longer tubes. Instead, the engines reflected prewar practice in their dimensions, although the Belt chose smaller drivers for still more tractive effort created by the large-bore cylinders. The firebox heating surface area included 39 sq ft (3.62 sq m) in five arch tubes, 64 sq ft (5.95 sq m) in the combustion chamber.
Baldwin's specs note that the line had 80 lb/yard (40 kg/metre) rails and 10 degree curves. Special emphasis was given to holding the engine weight to 406,000 lb (184,159 kg) or less. Baldwin estimated adhesion weight at 336,000 lb (152,407 kg) and total engine weight at 405,000 lb (183,705). The Belt's book shows a weight on the drivers that was lower by 6 short tons and an engine weight that came in about 4 short tons less.
Like the C-2s shown in Locobase 14241, these engines were leased immediately to the Belt Railway of Chicago, which they served until they were scrapped in November 1950.
Locobase 89 shows the United States Railroad Administration design of which this batch is an example. C&WI was the parent of the Belt Railway of Chicago and leased the engines to the Belt.
Like many USRA engines, this quintet served the Belt for over thirty years. 22-24 were scrapped in April 1950; 20-21 followed in November of the same year.
|Specifications by Steve Llanso of Sweat House Media|
|Railroad||Chicago & Western Indiana/Belt Railway||Chicago & Western Indiana/Belt Railway|
|Number in Class||5||5|
|Locomotive Length and Weight|
|Driver Wheelbase (ft)||21||21|
|Engine Wheelbase (ft)||40.25||40.30|
|Ratio of driving wheelbase to overall engine wheebase||0.52||0.52|
|Overall Wheelbase (engine & tender) (ft)||76.62||75.50|
|Axle Loading (Maximum Weight per Axle) (lbs)|
|Weight on Drivers (lbs)||323,900||276,000|
|Engine Weight (lbs)||397,200||352,000|
|Tender Loaded Weight (lbs)||187,300||184,300|
|Total Engine and Tender Weight (lbs)||584,500||536,300|
|Tender Water Capacity (gals)||10,000||10,000|
|Tender Fuel Capacity (oil/coal) (gals/tons)||16||14|
|Minimum weight of rail (calculated) (lb/yd)||108||92|
|Geometry Relating to Tractive Effort|
|Driver Diameter (in)||58||57|
|Boiler Pressure (psi)||200||200|
|High Pressure Cylinders (dia x stroke) (in)||30" x 32"||27" x 32"|
|Tractive Effort (lbs)||84,414||69,575|
|Factor of Adhesion (Weight on Drivers/Tractive Effort)||3.84||3.97|
|Firebox Area (sq ft)||366||363|
|Grate Area (sq ft)||88||76.30|
|Evaporative Heating Surface (sq ft)||5229||4656|
|Superheating Surface (sq ft)||1418||1085|
|Combined Heating Surface (sq ft)||6647||5741|
|Evaporative Heating Surface/Cylinder Volume||199.73||219.56|
|Computations Relating to Power Output (More Information)|
|Robert LeMassena's Power Computation||17,600||15,260|
|Same as above plus superheater percentage||21,296||18,159|
|Same as above but substitute firebox area for grate area||88,572||86,394|