Chicago & Alton 4-6-0 "Ten-Wheeler" Type Locomotives

Class G (Locobase 9043)

Data from C&A 1- 1930 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive collection.

These apparently were the first of the Schenectady Ten-wheelers. Locobase isn't sure why there were so many subgroups (see G1B, G1C, G1D). Certainly the basic data didn't vary very much.

Class G1B (Locobase 9036)

Data from C&A 1- 1930 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive collection.

These seem to have been identical to the G1D shown in Locobase 9035, which also came from Schenectady in 1892. But the present class had more than 6 short tons greater adhesion weight.

Class G1C (Locobase 9039)

Data from C&A 1- 1930 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive collection.

One of the variations among the Ten-wheelers produced in 1892 by Schenectady for the Alton was driver diameter. This trio had the same boiler as the other G1 engines, but taller drivers.

Class G1D (Locobase 9035)

Data from C&A 1- 1930 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive collection.

Class G2 (Locobase 9044)

Data from C&A 1- 1930 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive collection.

The Alton occasionally built a locomotive in its own shops and this was the only Ten-wheeler that came on the road from that source. Compared to the later engines, this was a bit smaller in most respects.

Class G3A (Locobase 9038)

Data from C&A 1- 1930 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive collection. All 10 were produced in June 1901 and their works numbers ran 19088-19091, 19105-19110.

Big Ten-wheelers that were originally delivered as Vauclain compounds (two 15 1/2" HP , two 26" LP cylinders), but soon converted to the simple-expansion arrangement shown in the specs. Although big engines with passenger-train-sized drivers, they were soon outstripped by the heavier trains. Never superheated, the class was scrapped in 1933

Specifications
Class	G	G1B	G1C	G1D	G2	G3A
Locobase ID	9043	9036	9039	9035	9044	9038
Railroad	Chicago & Alton	Chicago & Alton	Chicago & Alton	Chicago & Alton	Chicago & Alton	Chicago & Alton
Whyte	4-6-0	4-6-0	4-6-0	4-6-0	4-6-0	4-6-0
Road Numbers	223, 235-236, 240	233-234	229-231	228, 239	220	250-259
Gauge	Std	Std	Std	Std	Std	Std
Builder	Schenectady	Schenectady	Schenectady	Schenectady	C & A	Burnham, Williams & Co
Year	1893	1892	1892	1892	1889	1901
Valve Gear	Stephenson	Stephenson	Stephenson	Stephenson	Stephenson	Stephenson
	Locomotive Length and Weight
Driver Wheelbase	12.33'	12.33'	12.33'	12.33'	12.33'	14.42'
Engine Wheelbase	22.87'	22.87'	22.87'	22.87'	22.50'	26.58'
Ratio of driving wheelbase to overall engine wheebase	0.54	0.54	0.54	0.54	0.55	0.54
Overall Wheelbase (engine & tender)	47.58'	47.58'	50.58'	47.58'	47.21'	64.31'
Axle Loading (Maximum Weight per Axle)		41350 lbs	41350 lbs	36800 lbs		48100 lbs
Weight on Drivers	112600 lbs	110950 lbs	110950 lbs	97100 lbs	108500 lbs	136100 lbs
Engine Weight	137800 lbs	140200 lbs	140200 lbs	127100 lbs	131500 lbs	177200 lbs
Tender Light Weight	87000 lbs			87000 lbs	87000 lbs	107470 lbs
Total Engine and Tender Weight	224800 lbs	227200 lbs	227200 lbs	214100 lbs	218500 lbs	284670 lbs
Tender Water Capacity	4000 gals	3500 gals	3500 gals	4000 gals	4000 gals	9000 gals
Tender Fuel Capacity (oil/coal)	8 tons	7 tons	7 tons	8 tons	8 tons	12 tons
Minimum weight per yard of rail on which locomotive could run	62.56 lb rail	61.64 lb rail	61.64 lb rail	53.94 lb rail	60.28 lb rail	75.61 lb rail
	Geometry Relating to Tractive Effort
Driver Diameter	64"	64"	70"	64"	64"	73"
Boiler Pressure	175 psi	175 psi	170 psi	175 psi	175 psi	200 psi
Cylinders (dia x stroke)	18" x 26"	19" x 24"	19" x 24"	18" x 26"	18" x 24"	21" x 28"
Tractive Effort	19579 lbs	20137 lbs	17885 lbs	19579 lbs	18073 lbs	28756 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort)	5.75	5.51	6.20	4.96	6.00	4.73
	Heating Ability
Firebox Area	91.50 sq. ft	91.50 sq. ft	91.50 sq. ft	91.50 sq. ft	128 sq. ft	200.30 sq. ft
Grate Area	28 sq. ft	27.80 sq. ft	27.80 sq. ft	27.80 sq. ft	20.50 sq. ft	34.90 sq. ft
Evaporative Heating Surface	1815	1815	1815	1815	1720	3071
Superheating Surface
Combined Heating Surface	1815	1815	1815	1815	1720	3071
Evaporative Heating Surface/Cylinder Volume	237.02	230.45	230.45	237.02	243.33	273.59
	Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation	4900	4865	4726	4865	3587.50	6980
Same as above plus superheater percentage	4900	4865	4726	4865	3587.50	6980
Same as above but substitute firebox area for grate area	16012.50	16012.50	15555	16012.50	22400	40060
Power L1	5539.57	5386.12	5722.75	5539.57	6232.27	8828.56
Power MT	325.38	321.07	341.14	377.32	379.90	429.03