Chicago & Eastern Illinois 4-6-2 "Pacific" Locomotives of the USA


Class Details by Steve Llanso of Sweat House Media

Class K-1 (Locobase 7168)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 35, p. 196 and the C&EI 11 - 1911 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive Raildata collection. Works numbers were 35543-35546 in November 1910, 35692-35693, 35698-35699 in December.

The first C&EI Pacifics, these came to the railroad already superheated. The last three were delivered first to the Evansville & Terre Haute, which came into the C&EI fold in July 1911.

Steam admission came through 13"(330 mm) piston valves and the superheater area reflects the installation of the Emerson, a less-successful competitor to the Schmidt superheater. Note the low steam pressure, which probably reflects the then-prevailing view that one of the benefits of superheating was the opportunity to reduce boiler pressure and thus lower maintenance costs.

Steam pressure was later raised and the tube-flue ratio changed; see Locobase 7174


Class K-1 - modified (Locobase 13673)

Data from the C&EI 5 - 1949 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive Raildata collection.

The original design of the K-1 Pacific (Locobase 7168) showed some tentativeness. Boiler pressure was low, the firebox a bit small, heating surface areas modest. Over time, the C & EI addressed all of those limitations in later designs and the result was much more powerful passenger engines.


Class K-1a (Locobase 7174)

Data from the C&EI 5 - 1949 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive Raildata collection.

The original design of the K-1 Pacific (Locobase 7168) was modified with higher-pressure boilers and fewer (by 4) tubes.


Class K-2 (Locobase 7169)

Data from the C&EI 11 - 1911 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive Raildata collection. Works numbers were 37350-37353 in December 1911; 37416-37419 in January 1912.

Now that Baldwin had delivered the first Pacifics to the C & EI, the company enlarged the design. The new engines had ten more flues, which allowed an increase in the percentage of superheated heating surface despite the overall growth of the boiler. The firebox grew and now included 28 sq ft of fire tubes in its heating surface. Piston valves measured 13" (331 mm) in diameter.

According to the 1911 Railway Age, these engines came with components manufactured by several suppliers:

Axles :. Steel Steel

Bell ringer Gollmar pneumatic

Boiler lagging Ehret sectional magnesia

Brakes New York air brake

Brake beams Creco

Brake shoes American Brake Shoe & Foundry

Brick arch Security brick type "H"

Couplers Latrobe

Driving boxes cast steel

Headlight Pyle National electric

Injector Simplex

Journal bearings Hewitt bronze

Packing United States

Safety valve Ashton

Sanding devices Leach

Sight-feed lubricators Nathan

Springs Railway Steel-Spring Co.

Staying Tate flexibe staybolts

Steam gages Ashton

Steam heat equipment Gold

Superheater Schmidt

Tires Inter-Ocean

Tubes Charcoal iron

Valve gear Walschaert

Wheel centers cast steel

The railroad later raised the boiler pressure in these locomotives to 200 psi.

1008 was streamlined in 1940 to head up the Dixie Flagler, but this involved only cosmetic additions.


Class K-2as (Locobase 7175)

Data from the C&EI 5 - 1949 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive Raildata collection. Works numbers were 54307

54308 in November 1911.

Locobase doesn't know if the last two K-2s were delivered with a 180-psi (12.4 bar) boiler pressure like the others, but takes the opportunity offered by a different builder to show the effects of raising the BP to 200 psi.


Class K-3 (Locobase 7173)

Data from the C&EI 5 - 1949 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive Raildata collection. (Thanks to Chris Hohl for his 10 April 2015 email correcting the valve gear ID.) Works numbers were 6321-6326 in January 1923.

After World War I, the C&EI turned to a new builder for its last new passenger engines. In Lima they found an energetic interest in power at speed. This meant large heating surfaces, a generous grate, and a high percentage of superheat area.

Specifications by Steve Llanso of Sweat House Media
ClassK-1K-1 - modifiedK-1aK-2K-2as
Locobase ID7168 13,673 7174 7169 7175
RailroadChicago & Eastern Illinois (C&EI)Chicago & Eastern Illinois (C&EI)Chicago & Eastern Illinois (C&EI)Chicago & Eastern Illinois (C&EI)Chicago & Eastern Illinois (C&EI)
CountryUSAUSAUSAUSAUSA
Whyte4-6-24-6-24-6-24-6-24-6-2
Number in Class55182
Road Numbers331-335, 535-537/1000-10071000-1002, 100510031008-10151016-1017
GaugeStdStdStdStdStd
Number Built582
BuilderBaldwinC&EIC&EIBaldwinAlco-Schenectady
Year19101930194019111913
Valve GearWalschaertWalschaertWalschaertWalschaertWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft)1313131313
Engine Wheelbase (ft)34.7534.7534.7534.7534.75
Ratio of driving wheelbase to overall engine wheebase 0.37 0.37 0.37 0.37 0.37
Overall Wheelbase (engine & tender) (ft)67.7565.5065.5067.3467.25
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)149,800158,400158,400166,150186,587
Engine Weight (lbs)242,400251,400251,400263,600283,597
Tender Loaded Weight (lbs)175,800175,800175,800177,100173,200
Total Engine and Tender Weight (lbs)418,200427,200427,200440,700456,797
Tender Water Capacity (gals)90009000900090009000
Tender Fuel Capacity (oil/coal) (gals/tons)1616161614
Minimum weight of rail (calculated) (lb/yd)83888892104
Geometry Relating to Tractive Effort
Driver Diameter (in)7373737373
Boiler Pressure (psi)165180200180200
High Pressure Cylinders (dia x stroke) (in)25.5" x 28"25.5" x 28"24" x 28"26.5" x 28"26.5" x 28"
Tractive Effort (lbs)34,98038,16037,55841,21145,791
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.28 4.15 4.22 4.03 4.07
Heating Ability
Firebox Area (sq ft)181241241238239
Grate Area (sq ft)45.2045454545.25
Evaporative Heating Surface (sq ft)27962991299136213653
Superheating Surface (sq ft)750705705935757
Combined Heating Surface (sq ft)35463696369645564410
Evaporative Heating Surface/Cylinder Volume168.94180.72204.01202.58204.37
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation74588100900081009050
Same as above plus superheater percentage9024963910,710980110,589
Same as above but substitute firebox area for grate area36,13751,62257,35851,83655,926
Power L112,67613,94817,49616,20515,875
Power MT559.66582.39730.53645.07562.71

Specifications by Steve Llanso of Sweat House Media
ClassK-3
Locobase ID7173
RailroadChicago & Eastern Illinois (C&EI)
CountryUSA
Whyte4-6-2
Number in Class6
Road Numbers1018-1023
GaugeStd
Number Built6
BuilderLima
Year1923
Valve GearBaker
Locomotive Length and Weight
Driver Wheelbase (ft)13
Engine Wheelbase (ft)34.75
Ratio of driving wheelbase to overall engine wheebase 0.37
Overall Wheelbase (engine & tender) (ft)67.34
Axle Loading (Maximum Weight per Axle) (lbs)63,200
Weight on Drivers (lbs)189,000
Engine Weight (lbs)306,000
Tender Loaded Weight (lbs)236,000
Total Engine and Tender Weight (lbs)542,000
Tender Water Capacity (gals)12,000
Tender Fuel Capacity (oil/coal) (gals/tons)14
Minimum weight of rail (calculated) (lb/yd)105
Geometry Relating to Tractive Effort
Driver Diameter (in)79
Boiler Pressure (psi)200
High Pressure Cylinders (dia x stroke) (in)27" x 28"
Tractive Effort (lbs)43,925
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.30
Heating Ability
Firebox Area (sq ft)260
Grate Area (sq ft)70.80
Evaporative Heating Surface (sq ft)4289
Superheating Surface (sq ft)1141
Combined Heating Surface (sq ft)5430
Evaporative Heating Surface/Cylinder Volume231.15
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation14,160
Same as above plus superheater percentage17,134
Same as above but substitute firebox area for grate area62,920
Power L122,506
Power MT787.57

Photos

Reference


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