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|
|Ratio of driving wheelbase to overall engine wheebase||0.52||0.52|
|Overall Wheelbase (engine & tender)||76.62'||75.50'|
|Axle Loading (Maximum Weight per Axle)|
|Weight on Drivers||323900 lbs||276000 lbs|
|Engine Weight||397200 lbs||352000 lbs|
|Tender Light Weight||187300 lbs||184300 lbs|
|Total Engine and Tender Weight||584500 lbs||536300 lbs|
|Tender Water Capacity||10000 gals||10000 gals|
|Tender Fuel Capacity (oil/coal)||16 tons||14 tons|
|Minimum weight of rail (calculated)||108 lb/yard||92 lb/yard|
|Geometry Relating to Tractive Effort|
|Boiler Pressure||200 psi||200 psi|
|Cylinders (dia x stroke)||30" x 32"||27" x 32"|
|Tractive Effort||84414 lbs||69575 lbs|
|Factor of Adhesion (Weight on Drivers/Tractive Effort)||3.84||3.97|
|Firebox Area||366 sq. ft||363 sq. ft|
|Grate Area||88 sq. ft||76.30 sq. ft|
|Evaporative Heating Surface||5229 sq. ft||4656 sq. ft|
|Superheating Surface||1418 sq. ft||1085 sq. ft|
|Combined Heating Surface||6647 sq. ft||5741 sq. ft|
|Evaporative Heating Surface/Cylinder Volume||199.73||219.56|
|Computations Relating to Power Output (More Information)|
|Robert LeMassena's Power Computation||17600||15260|
|Same as above plus superheater percentage||21296||18159|
|Same as above but substitute firebox area for grate area||88572||86394|