Chicago, Burlington & Quincy 2-6-6-2 Type Locomotives

Class T-1 (Locobase 1047)

Identical to the Great Northern's L-1s (Locobase 5354) and fitted with a Belpaire firebox. These three engines were originally built for the GN and may have entered service on that railroad. Baldwin delivered five more T-1as in 1909. After main-line service, they worked the hump at the Galesburg, Ill. yard and were eventually rebuilt as 0-8-0 F-2 switchers in 1926-1927.

Data from locomotive diagram published on Vernon Beck's website -- http://home.earthlink.net/~vnlbeck/T/T1t.tif (accessed 22 March 2003).

Class T-2 (Locobase 2906)

In keeping with the experimentation in articulated locomotives underway on several railroads at this time, these engines had a novel boiler layout. Two boiler sections were bolted together to form a rigid unit. The front section acted as an enormous preheater for the other. According to Corbin & Kerka (1960, p 135), injectors forced water into the feedwater-heater compartment, which was 8' 11" long and filled with 406 2 1/4" fire tubes. Water passed from this section through check valves into the rear, evaporating boiler and firebox. The firebox had a combustion chamber and the boiler had a superheater.

There was more novelty. Steam from the high-pressure cylinders would be led back through 19 2" tubes gathered in the 17" diameter flue in the preheater.

All 10 would eventually be converted to oil burning and would receive Elesco feedwater heaters. Although they proved difficult to maintain, they clung to a niche on the Edgemont-Deadwood line in the Black Hills until the late 1940s.

See also data from locomotive diagram published on Vernon Beck's website -- http://home.earthlink.net/~vnlbeck/T/T2t.tif (accessed 22 March 2003).

Specifications
Class	T-1	T-2
Locobase ID	1047	2906
Railroad	Chicago, Burlington & Quincy (CB&Q)	Chicago, Burlington & Quincy (CB&Q)
Whyte	2-6-6-2	2-6-6-2
Road Numbers	4000-4002	4100-4109
Gauge	Std	Std
Builder	Burnham, Williams & Co	Baldwin
Year	1908	1910
Valve Gear	Walschaert	Walschaert
	Locomotive Length and Weight
Driver Wheelbase	10'	11.50'
Engine Wheelbase	44.83'	51.42'
Ratio of driving wheelbase to overall engine wheebase	0.22	0.22
Overall Wheelbase (engine & tender)	73.17'	83'
Axle Loading (Maximum Weight per Axle)	57800 lbs	56650 lbs
Weight on Drivers	316000 lbs	314850 lbs
Engine Weight	355000 lbs	379650 lbs
Tender Light Weight	148200 lbs	148100 lbs
Total Engine and Tender Weight	503200 lbs	527750 lbs
Tender Water Capacity	8000 gals	8000 gals
Tender Fuel Capacity (oil/coal)	13 tons	13 tons
Minimum weight per yard of rail on which locomotive could run	87.78 lb rail	87.46 lb rail
	Geometry Relating to Tractive Effort
Driver Diameter	55"	64"
Boiler Pressure	200 psi	200 psi
Cylinders (dia x stroke)	21.5" x 32"	23" x 32"
Low Pressure Cylinders (dia x stroke)	33" x 32"	35" x 32"
Tractive Effort	64193 lbs	62807 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort)	4.92	5.01
	Heating Ability
Firebox Area	230 sq. ft	242.50 sq. ft
Grate Area	78 sq. ft	65.20 sq. ft
Evaporative Heating Surface	5658	5003
Superheating Surface		569
Combined Heating Surface	5658	5572
Evaporative Heating Surface/Cylinder Volume	420.78	325.12
	Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation	15600	13040
Same as above plus superheater percentage	15600	14371.62
Same as above but substitute firebox area for grate area	46000	53452.71
Power L1	3940.10	6786.96
Power MT	164.93	285.14