Chicago Great Western 4-6-0 "Ten-Wheeler" Type Locomotives

Class 200C / E3 (Locobase 9982)

Data from "Ten-Wheel Compound for Chicago Great Western," Locomotive Engineering, Vol XIII, No 8 (August 1900), p. 352.

Brought into service as cross-compounds, these mixed-traffic Ten-wheelers may not have been satisfactory in a number of respects, or the traffic requirements didn't favor a neither-fish-nor-fowl design. .

Locobase supposes as much given that, although all were soon "simpled" with two 20" x 28" cylinders, 6 were sold to the Indianapolis & Evansville in 1910-1911 and the other 4 were purchased by the Canadian Government in 1917.

Locobase 8055 shows the quartet as simple-expansion locomotives.

Class E-5 (Locobase 10780)

Data from Baldwin Locomotive Works, Record of Recent Construction ((1903), No. 35, p. 182-183. Works numbers was 20272.

This was the one Vauclain compound Ten-wheeler that the CGW bought and it featured not only the compounding system but also the Vanderbilt corrugated boiler. (See Locobase 4104 in particular for a description of this unusual vessel.)

220 would later be rebuilt as a simple-expansion engine with 20" x 28" cylinders. In November 1916, 220 was sold to the Algoma Eastern as their class T-1, road number 40. The AE scrapped 40 in 1927.

Class E1 (Locobase 4162)

See http://www.geocities.com/zvwrr/chicago_great_western_steam.html for the original 1917 railroad diagrams. Works numbers were 16576-16580.

Firebox heating surface includes 24 sq ft of arch tubes. According to Drury (1993), these were later sold to the Canadian government; see Locobase 8052.

Class E2 (Locobase 8054)

Data from the CN to 1953 Locomotive diagram book supplied in May 2005 by Allen Stanley from his extensive collection. Works numbers were 16636-16640.

Hearty mixed-traffic Ten-wheelers that duplicated the E-1s shown in Locobase 4162, but that were completed as Vauclain compounds. Like most such engines, these were soon rebuilt by the CGW as simple-expansion engines.

In 1917, the CGW sold all of its Ten-wheelers of this size to the Canadian National Transcontinental Railway and this quintet went along (see Locobase 8052).

Class E4 (Locobase 4163)

See http://www.geocities.com/zvwrr/chicago_great_western_steam.html for the original 1917 railroad diagrams. Firebox heating surface includes 28.75 sq ft of arch tubes. Some dimensions difficult to determine from plans.

Class E6s (Locobase 4164)

See http://www.geocities.com/zvwrr/chicago_great_western_steam.html for the original 1917 railroad diagrams. Works numbers were 34051, 34073 in November 1909.

Firebox heating surface includes 24 sq ft of arch tubes. E6s 500-501 similar but had more weight on the drivers (151,200 lb).

The pair was scrapped in April 1930 and in 1931.

Class E7s (Locobase 4156)

See http://www.geocities.com/zvwrr/chicago_great_western_steam.html for the original 1917 railroad diagrams. Works numbers were 35286-35288, 35327-35329 in September 1910.

Firebox heating surface includes 27 sq ft of arch tubes. Piston valves measured 13" in diameter. The first two were heavier than the last 4 for some reason; they put 162,000 lb on the drivers and 216,200 lb on all engine axles.

All were superheated in 1913-1914 and in 1917-1920, the railroad fitted bushings in the cylinders to improve the heating surface-to-cylinder volume ratio. See Locobase 4165.

Class E7s (Locobase 4165)

Data from CGW 1 - 1943 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive collection.

Firebox heating surface includes 22 sq ft of arch tubes. After those modifications, tube count went to 202, arch tube area dropped to 22 sq ft, and total evaporative heating surface area to 2,457 sq ft. Weight on the drivers climbed to 162,000 lb and total engine weight rose to 216,200 lb. It's not clear how the grate area grew from 46.7 sq ft to 53.6 sq ft.

All of the class was scrapped in March-June 1950.

Specifications
Class	200C / E3	E-5	E1	E2	E4	E6s	E7s	E7s
Locobase ID	9982	10780	4162	8054	4163	4164	4156	4165
Railroad	Chicago Great Western (CGW)	Chicago Great Western (CGW)	Chicago Great Western (CGW)	Chicago Great Western (CGW)	Chicago Great Western (CGW)	Chicago Great Western (CGW)	Chicago Great Western (CGW)	Chicago Great Western (CGW)
Whyte	4-6-0	4-6-0	4-6-0	4-6-0	4-6-0	4-6-0	4-6-0	4-6-0
Road Numbers	230-239	220	200-204	230-234 / 4541+ / 1413-1417	170-175	502-503	504-509	504-509
Gauge	Std	Std	Std	Std	Std	Std	Std	Std
Builder	Rhode Island	Burnham, Williams & Co	Burnham, Williams & Co	Burnham, Williams & Co	Richmond	Baldwin	Baldwin	Baldwin
Year	1900	1902	1899	1899	1901	1909	1910	1925
Valve Gear	Stephenson	Stephenson	Stephenson	Stephenson	Stephenson	Walschaert	Walschaert	Walschaert
	Locomotive Length and Weight
Driver Wheelbase	15'	15'	15'	15'	14'	15.25'	16'	16'
Engine Wheelbase	26.92'	27.50'	27.17'	27.17'	24.25'	27.09'	27.83'	27.83'
Ratio of driving wheelbase to overall engine wheebase	0.56	0.55	0.55	0.55	0.58	0.56	0.57	0.57
Overall Wheelbase (engine & tender)		53.46'	55.37'	53.12'	52.87'	57.28'	58.56'	58.57'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers	120000 lbs	132710 lbs	122800 lbs	117800 lbs	103175 lbs	144950 lbs	151750 lbs	162000 lbs
Engine Weight	160000 lbs	182110 lbs	167550 lbs	157550 lbs	133475 lbs	198000 lbs	208650 lbs	216200 lbs
Tender Light Weight	107000 lbs	119900 lbs	110080 lbs	110000 lbs	118080 lbs	149000 lbs	149000 lbs	158000 lbs
Total Engine and Tender Weight	267000 lbs	302010 lbs	277630 lbs	267550 lbs	251555 lbs	347000 lbs	357650 lbs	374200 lbs
Tender Water Capacity	6000 gals	6000 gals	6145 gals	6000 gals	6145 gals	8000 gals	8000 gals	8000 gals
Tender Fuel Capacity (oil/coal)	8 tons	tons	5 tons	11 tons	9 tons	13 tons	13 tons	14 tons
Minimum weight per yard of rail on which locomotive could run	67 lb rail	74 lb rail	68 lb rail	65 lb rail	57 lb rail	81 lb rail	84 lb rail	90 lb rail
	Geometry Relating to Tractive Effort
Driver Diameter	63"	63"	68"	63"	70"	73"	73"	73"
Boiler Pressure	200 psi	200 psi	200 psi	200 psi	180 psi	180 psi	180 psi	180 psi
Cylinders (dia x stroke)	22" x 26" (1)	15.5" x 30"	20" x 28"	15.5" x 28"	18" x 26"	24" x 28"	26" x 28"	24" x 28"
Tractive Effort	24843 lbs	28698 lbs	28000 lbs	26785 lbs	18412 lbs	33803 lbs	39671 lbs	33803 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort)	4.83	4.62	4.39	4.40	5.60	4.29	3.83	4.79
	Heating Ability
Firebox Area	183.50 sq. ft	135.50 sq. ft	214 sq. ft	190 sq. ft	183.40 sq. ft	169.50 sq. ft	191 sq. ft	189 sq. ft
Grate Area	32.90 sq. ft	33 sq. ft	32.60 sq. ft	32.70 sq. ft	29.10 sq. ft	42.60 sq. ft	46.70 sq. ft	53.60 sq. ft
Evaporative Heating Surface	2614 sq. ft	2361 sq. ft	2463 sq. ft	2463 sq. ft	2031 sq. ft	2408 sq. ft	2382 sq. ft	2457 sq. ft
Superheating Surface						480 sq. ft	480 sq. ft	480 sq. ft
Combined Heating Surface	2614 sq. ft	2361 sq. ft	2463 sq. ft	2463 sq. ft	2031 sq. ft	2888 sq. ft	2862 sq. ft	2937 sq. ft
Evaporative Heating Surface/Cylinder Volume	457.03	360.36	241.92	402.78	265.23	164.25	138.44	167.59
	Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation	6580	6600	6520	6540	5238	7668	8406	9648
Same as above plus superheater percentage	6580	6600	6520	6540	5238	8972	9835	11192
Same as above but substitute firebox area for grate area	36700	27100	42800	38000	33012	35697	40225	39463
Power L1	4757	3461	7866	4166	8084	11316	9746	11535
Power MT	262.18	172.49	423.65	233.90	518.21	516.33	424.77	470.93