The reference for locomotives and railcars


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Illinois Central class 1701
United States | 1915 | 182 produced
Ron Ziel, „American Locomotives 1858 to 1949”

The first Mikados ordered by the Illinois Central from Lima was the class 1701. Lima manufactured part in 1915 and 1916, with the remainder being supplied by Lima and Baldwin in 1918 and 1919. They were largely similar to the class 1501 and 1551 locomotives.

In 1931, the firebox of number 1742 was modified. It received two thermic siphons and a brick arch. This increased the overall efficiency of the boiler by 8.47 percent, so that at least 50 other machines were rebuilt in the same form in the following years.

Variantas builtrebuilt thermic siphons
ManufacturerLima, BaldwinPaducah
Axle config2-8-2 (Mikado) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Wheelbase35 ft 2 in
Fixed wheelbase16 ft 6 in
Total wheelbase65 ft 7 1/2 in
Service weight282,700 lbs
Adhesive weight218,300 lbs
Total weight450,200 lbs
Axle load56,400 lbs
Water capacity9,000 us gal
Fuel capacity30,000 lbs (coal)
Power sourcesteam
Estimated power2,850 hp (2,125 kW)2,950 hp (2,200 kW)
Optimal speed34 mph35 mph
Starting effort54,158 lbf
Power Plant
Driver diameter63.5 in
Boiler pressure185 psi
Expansion typesimple
Cylinderstwo, 27 x 30 in
Grate area70.4 sq ft
Firebox area266.6 sq ft326 sq ft
Tube heating area3,835.4 sq ft3,782 sq ft
Evaporative heating area4,102 sq ft4,108 sq ft
Superheater area887 sq ft
Total heating area4,989 sq ft4,995 sq ft
Calculated Values
steam locomotive
last changed: 03/2023

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