Illinois Central 2-6-4 "Adriatic" Locomotives of the USA


Class Details by Steve Llanso of Sweat House Media

Class 1422 (Locobase 6949)

Data from IC 1913ca locomotive diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection. See also E E R Tratman, "Tank Locomotives", Official Proceedings of the Western Railway Club (Chicago: W F Hall Printing Company, 1903), pp. 342 et seq.

A bigger Forney type, clearly enlarged by Rogers to put more power at the head of the commuter train. Given that there were only two of them and they were out of service by 1913, the class must not have been very successful.


Class 1434 (Locobase 6983)

Data from IC 1911 locomotive data supplied in May 2005 by Allen Stanley from his extensive Raildata collection. See also E E R Tratman, "Tank Locomotives", Official Proceedings of the Western Railway Club (Chicago: W F Hall Printing Company, 1905), pp. 368.

This set of locomotives were rebuilt from Ten-wheelers that had entered service in the 1880s. They became Forney-type suburban tanks with leadiing and trailing bogies and thus were 4-6-4Ts


Class 1437 (Locobase 6984)

Data from IC 1911 locomotive data and 1913 locomotive diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection. See also E E R Tratman, "Tank Locomotives", Official Proceedings of the Western Railway Club (Chicago: W F Hall Printing Company, 1903), pp. 342 et seq.

These were the first of the IC suburban tanks to run on this wheel arrangement. The design put down more adhesive weight at the expense of a longer wheelbase. The railroad later balanced the bi-directionality by changing the lead pony truck to a four-wheel bogie. They thus became 4-6-4Ts.


Class 1442 (Locobase 6978)

Data from IC 1928 locomotive diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection.

This class was originally produced by Schenectady and delivered to the IC as a set of Moguls in 1889 (Locobase 7023). More than 30 years later, the IC's Burnside Shops converted the class to these suburban commuter locomotives. About all that entailed was removing the tender, extending the frame, and grafting on a bunker and tank. The rest of the engine may have been renewed, but the dimensions, proportions, and ratios remained those of the 1889 2-6-0s.


Class 1449 (Locobase 6977)

Data from IC 1913ca locomotive diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection. See also E E R Tratman, "Tank Locomotives", Official Proceedings of the Western Railway Club (Chicago: W F Hall Printing Company, 1903), pp. 342 et seq.

Bigger even than the two delivered from Rogers in the same year and described in Locobase 6948, these were the largest suburban tanks of this arrangement. At least one (1454) was fitted with 15.8 sq ft of arch tubes. Rogers (works numbers 4744, 4752, 4770, 4891) contributed 1451-1454 in 1892-1893. Brooks (2605, 2640) added at least two more.

After their service on the IC, the 1450 and 1452 were sold to Roux Crate & Lumber in Florida. 1450 was renumbered 3 and went to Bartow, 1452 took #7 and went to Lake Garfield.

Specifications by Steve Llanso of Sweat House Media
Class14221434143714421449
Locobase ID6949 6983 6984 6978 6977
RailroadIllinois Central (IC)Illinois Central (IC)Illinois Central (IC)Illinois Central (IC)Illinois Central (IC)
CountryUSAUSAUSAUSAUSA
Whyte2-6-4T2-6-4T2-6-4T2-6-4T2-6-4T
Number in Class23478
Road Numbers1422-14231434-14361437-14401442-14481449-1456
GaugeStdStdStdStdStd
Number Built248
BuilderRogersSchenectadySchenectadySchenectadyseveral
Year18921901188619211892
Valve GearStephensonStephensonStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase13'11'10.50'13'14'
Engine Wheelbase33.42'34.25'33.92'34.58'37.04'
Ratio of driving wheelbase to overall engine wheebase 0.39 0.32 0.31 0.38 0.38
Overall Wheelbase (engine & tender)33.42'34.25'33.92'34.58'37.04'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers92000 lbs71400 lbs72275 lbs85000 lbs121450 lbs
Engine Weight160000 lbs148300 lbs155133 lbs163300 lbs211070 lbs
Tender Light Weight
Total Engine and Tender Weight160000 lbs148300 lbs155133 lbs163300 lbs211070 lbs
Tender Water Capacity2100 gals2760 gals2760 gals2100 gals3105 gals
Tender Fuel Capacity (oil/coal)5 tons4 tons4 tons5 tons6.3 tons
Minimum weight of rail (calculated)51 lb/yard40 lb/yard40 lb/yard47 lb/yard67 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter56.50"56.50"56.50"56.50"56.50"
Boiler Pressure160 psi150 psi150 psi150 psi165 psi
Cylinders (dia x stroke)18" x 22"18" x 24"18" x 24"18" x 24"19" x 26"
Tractive Effort17158 lbs17548 lbs17548 lbs17548 lbs23299 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.36 4.07 4.12 4.84 5.21
Heating Ability
Firebox Area141.70 sq. ft122 sq. ft96.20 sq. ft131.80 sq. ft173.10 sq. ft
Grate Area23.36 sq. ft17.36 sq. ft23.50 sq. ft29.50 sq. ft26.40 sq. ft
Evaporative Heating Surface1327 sq. ft1115 sq. ft1270 sq. ft1412 sq. ft1532 sq. ft
Superheating Surface
Combined Heating Surface1327 sq. ft1115 sq. ft1270 sq. ft1412 sq. ft1532 sq. ft
Evaporative Heating Surface/Cylinder Volume204.80157.74179.67199.76179.56
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation37382604352544254356
Same as above plus superheater percentage37382604352544254356
Same as above but substitute firebox area for grate area2267218300144301977028562
Power L147333447349941384366
Power MT340.25319.30320.19321.98237.76

Reference


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