Canadian Pacific 2-10-4 "Texas" Type Locomotives

Class T-1a (Locobase 92)

Data from 1947 Canadian Pacific Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive collection.

Firebox heating surface include 45 sq ft of arch tubes.

Bill Yeats, writing on the http://www.wera.org/features/selkirk2-10-4.htm website (visited 4 June 2005), tells us about these powerful dual-service locomotives. The first 20 -- T-1a 5900-5919 -- were delivered in 1929 for service between Calgary, Alb and Revelstoke, BC. Encompassing the whole of the CP's passage over the Canadian Rockies, this division demanded powerful, heavy locomotives. Yeats, a veteran fireman and engineer on this class, notes that it was a good thing they were built as oil burners: "Had they been coal burners," he figures,"much larger tenders would have been required thus increasing the total weight to nearly four hundred tons when total weight had to be kept down."

Yeats also says that 5 driving axles and 3 carrying axles, two of the latter under the huge firebox "...made them ride much better than all bu the 2800 class 4-6-4 Royal Hudsons, which also had four-wheel trailing trucks."

So modern an oil-burning engine made the fireman's life a much easier one than that endured by his counterpart on a coal-fed, non-stoker-equipped locomotive, adds Yeats.

After the Rockies were populated by diesels in the early 1950s, the Selkirks went to the Brooks and Maple Creek subdivisions of the line between Calgary east to Swift Current, Saskatchewan and up north from Calgary to Edmonton. In 1957, the class was rated at 50 mph, but, says Yeats, "...I recall working [on all three subclasses] before this date and going at least 65, so this speed restriction must have been put on the during the last days."

Class T-1b (Locobase 6557)

Data from 1947 Canadian Pacific Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive collection.

See Locobase 92 for discussion of this pair of Selkirk classes.

T-1b 5920-5929 1938 smoother lines, following Royal Hudsons.

T-1c 5930-5935 were delivered in 1949, the only difference from the T-1b being the provision of two Westinghouse air compressores instead of the one of the T-1b. 5935 was the very last steam locomotive built for any Canadian company.

Specifications
Class	T-1a	T-1b
Locobase ID	92	6557
Railroad	Canadian Pacific	Canadian Pacific
Whyte	2-10-4	2-10-4
Road Numbers	5900-5919	5920-5929
Gauge	Std	Std
Builder	Montreal LW	Montreal LW
Year	1929	1938
Valve Gear
	Locomotive Length and Weight
Driver Wheelbase	22'	22'
Engine Wheelbase	46.04'	46'
Ratio of driving wheelbase to overall engine wheebase	0.48	0.48
Overall Wheelbase (engine & tender)	87.06'	87.42'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers	312800 lbs	310000 lbs
Engine Weight	452500 lbs	447000 lbs
Tender Light Weight	297500 lbs	284000 lbs
Total Engine and Tender Weight	750000 lbs	731000 lbs
Tender Water Capacity	14400 gals	14400 gals
Tender Fuel Capacity (oil/coal)	5400 gals	5400 gals
Minimum weight per yard of rail on which locomotive could run	104 lb rail	103 lb rail
	Geometry Relating to Tractive Effort
Driver Diameter	63"	63"
Boiler Pressure	275 psi	290.10 psi
Cylinders (dia x stroke)	25.5" x 32"	25" x 32"
Tractive Effort	77204 lbs	78281 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort)	4.05	3.96
	Heating Ability
Firebox Area	422 sq. ft	412 sq. ft
Grate Area	93.50 sq. ft	93.50 sq. ft
Evaporative Heating Surface	4931	5054
Superheating Surface	2112	2032
Combined Heating Surface	7043	7086
Evaporative Heating Surface/Cylinder Volume	260.69	277.99
	Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation	25713	27124
Same as above plus superheater percentage	33426	35262
Same as above but substitute firebox area for grate area	150865	155378
Power L1	39766	42560
Power MT	1401.36	1513.36