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Chicago, Rock Island & Pacific (Rock Island) class C-43
United States | 1906
158 produced
No. 2049 in April 1938 at Minneapolis
No. 2049 in April 1938 at Minneapolis
R.H. Carlson / collection Richard Driver

The class C-43 of the Rock Island didn't technically designate a series of similar locomotives, but only stood for Consolidations with a tractive effort of around 43,000 pounds. 83 locomotives with the numbers 1701 to 1783 were built by Baldwin in 1906. With drivers of 63 inches and cylinders of 23 by 30 inches, they initially only produced a tractive effort of 39,600 pounds. Only after they got larger cylinders when being superheated starting in 1918, they produced 43,100 pounds. ALCO-Brooks built numbers 1901 to 1930 in 1907 which were similar to the first batch.

Also in 1907, ALCO-Schenectady built numbers 2100 to 2144 which had drivers of only 57 inches and a higher boiler pressure and produced 43,300 pounds even with cylinders of only 22 by 30 inches. They had a firebox that was somewhat larger than that of the earlier Consolidations, but with roughly the same grate area. Most were later superheated and were fitted with thermic syphons which increased the grate area from 183 to 240 square feet. Like the earlier Consolidations, they were retired between 1936 and 1953.

Variant1701-17832100-2144superheated
General
Built19061907from 1916
ManufacturerBaldwinALCORock Island
Axle config2-8-0 (Consolidation) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Wheelbase26 ft24 ft 9 in
Rigid wheelbase17 ft16 ft
Total wheelbase58 ft58 ft 7 1/2 in
Service weight198,600 lbs206,000 lbs210,700 lbs
Adhesive weight177,300 lbs183,000 lbs187,000 lbs
Total weight338,000 lbs355,700 lbs360,400 lbs
Axle load44,325 lbs51,500 lbs52,675 lbs
Water capacity7,000 us gal7,500 us gal
Fuel capacity24,000 lbs (coal)28,000 lbs (coal)
Boiler
Grate area49.7 sq ft50 sq ft
Firebox area169 sq ft183 sq ft240 sq ft
Tube heating area2,754 sq ft2,654 sq ft2,301 sq ft
Evaporative heating area2,923 sq ft2,894 sq ft2,541 sq ft
Superheater area510 sq ft
Total heating area2,923 sq ft2,894 sq ft3,051 sq ft
Variant1701-17832100-2144superheated
Power Plant
Driver diameter63 in57 in
Boiler pressure185 psi200 psi190 psi
Expansion typesimple
Cylinderstwo, 23 x 30 intwo, 22 x 30 intwo, 22 1/2 x 30 in
Power
Power sourcesteam
Estimated power1,500 hp (1,119 kW)1,650 hp (1,230 kW)1,900 hp (1,417 kW)
Optimal speed24 mph28 mph
Starting effort39,612 lbf43,305 lbf43,031 lbf
Calculated Values
steam locomotive
freight
last changed: 08/2024
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