Chicago & Eastern Illinois 4-6-2 "Pacific" Type Locomotives

Class K-1 (Locobase 7168)

Data from the C&EI 11 - 1911 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive collection.

The first C & EI Pacifics, these came to the railroad already superheated. Steam admission came through 13" piston valves. 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-1a (Locobase 7174)

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

The original design of the K-1 Pacific 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-2 (Locobase 7169)

Data from the C&EI 11 - 1911 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive collection.

Now that Baldwin had delivered the first Pacifics to the C & EI, the company enlarged the design. The new engines had 10 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. 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-2 - 1016 (Locobase 7175)

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

Locobase doesn't know if the last two K-2s were delivered with a 180-psi 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 collection.

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
Class	K-1	K-1a	K-2	K-2 - 1016	K-3
Locobase ID	7168	7174	7169	7175	7173
Railroad	Chicago & Eastern Illinois (C & EI)	Chicago & Eastern Illinois (C & EI)	Chicago & Eastern Illinois (C & EI)	Chicago & Eastern Illinois (C & EI)	Chicago & Eastern Illinois (C & EI)
Whyte	4-6-2	4-6-2	4-6-2	4-6-2	4-6-2
Road Numbers	1000-1007	1000	1008-1015	1016-1017	1018-1023
Gauge	Std	Std	Std	Std	Std
Builder	Baldwin	shops	Baldwin	Alco-Schenectady	Lima
Year	1910	1940	1911	1913	1923
Valve Gear	Walschaert	Walschaert	Walschaert	Walschaert	Walschaert
	Locomotive Length and Weight
Driver Wheelbase	13'	13'	13'	13'	13'
Engine Wheelbase	34.75'	34.75'	34.75'	34.75'	34.75'
Ratio of driving wheelbase to overall engine wheebase	0.37	0.37	0.37	0.37	0.37
Overall Wheelbase (engine & tender)	67.75'	65.50'	67.34'	67.25'	67.34'
Axle Loading (Maximum Weight per Axle)					63200 lbs
Weight on Drivers	149800 lbs	158400 lbs	166150 lbs	186587 lbs	189000 lbs
Engine Weight	242400 lbs	251400 lbs	263600 lbs	283597 lbs	306000 lbs
Tender Light Weight	175800 lbs	175800 lbs	177100 lbs	173200 lbs	236000 lbs
Total Engine and Tender Weight	418200 lbs	427200 lbs	440700 lbs	456797 lbs	542000 lbs
Tender Water Capacity	9000 gals	9000 gals	9000 gals	9000 gals	12000 gals
Tender Fuel Capacity (oil/coal)	16 tons	16 tons	16 tons	14 tons	14 tons
Minimum weight per yard of rail on which locomotive could run	83.22 lb rail	88 lb rail	92.31 lb rail	103.66 lb rail	105 lb rail
	Geometry Relating to Tractive Effort
Driver Diameter	73"	73"	73"	73"	79"
Boiler Pressure	175 psi	200 psi	180 psi	200 psi	200 psi
Cylinders (dia x stroke)	25.5" x 28"	24" x 28"	26.5" x 28"	26.5" x 28"	27" x 28"
Tractive Effort	37100 lbs	37558 lbs	41211 lbs	45791 lbs	43925 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort)	4.04	4.22	4.03	4.07	4.30
	Heating Ability
Firebox Area	180 sq. ft	241 sq. ft	238 sq. ft	239 sq. ft	260 sq. ft
Grate Area	45 sq. ft	45 sq. ft	45 sq. ft	45.25 sq. ft	70.80 sq. ft
Evaporative Heating Surface	2529	2991	3621	3653	4289
Superheating Surface	666	705	935	757	1141
Combined Heating Surface	3195	3696	4556	4410	5430
Evaporative Heating Surface/Cylinder Volume	152.80	204.01	202.58	204.37	231.15
	Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation	7875	9000	8100	9050	14160
Same as above plus superheater percentage	9516.55	10716.72	9762.31	10603.48	17135.43
Same as above but substitute firebox area for grate area	38066.20	57393.99	51631.79	56005.12	62926.70
Power L1	12122.28	17495.52	16204.91	15874.92	22505.70
Power MT	535.21	730.51	645.06	562.71	787.56