Uintah Railway / Union Railroad / Unity Railways 2-8-0 "Consolidation" Locomotives of the USA


Class Details by Steve Llanso of Sweat House Media

Class 10 (Locobase 11544)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 26, p. 119. Works number 24271 in May 1904 and 36093 in February 1911.

The older of these two Consolidations worked for almost three decades before selling the engine in November 1934 to the Eureka-Nevada Railway. The newer 11 was scrapped in 1927, which suggests perhaps a wreck too damaging to repair.

This Nevada road began as the Eureka & Palisade Railway in 1875, but needed reorganization in 1910 after some severe flooding. The E-N operated until September 1938.


Class 160 (Locobase 3296)

Data from Railway Age, 13 May 1921. See also DeGolyer, Vol 59, pp. 352+. Works numbers were 51970-51972 in June 1919, 52056-52057 in July.

Union Railroad served primarily the western Pennsylvania steel country. The firebox heating surface included 27 sq ft (2.5 sq m) of arch tubes. In other respects, this is a relatively small engine for the time, roughly comparable to the 1913 B&LE Class C-4As.

The 160s differed from the earlier Baldwin-built Union engines in having slightly taller drivers and, more important, superheaters. They also adopted 12" (305 mm) piston valves to serve the cylinders.


Class 25 (Locobase 15329)

Data from Mark Cain's http://www.cornwallrailroad.com/, supplemented by DeGolyer, Vol 74, pp. 18+. Works number was 58363 in April 1925.

This superheated Consolidation seems a bit more than neeeded on a 3.3 mile (5.3-km) coal road. Even so, the 25 had plenty of power and a sizable boiler whose steam was conveyed to its cylinders through 12" (305 mm) piston valves.

The URR was formed in 1915 to coal from Renton, Pa (just northeast of Pittsburgh), to Renton Junction, where it handed off to the Bessemer & Lake Erie.


Class 91 (Locobase 13452)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Vol 32, p. 109. Works numbers were 33377-33378, 33391-33392 in April 1909, 35124-35125 in August 1910, 35282-35284 in September, and 40075-40079 in July 1913.

Brawny Consolidations that started a large class on the Hall, Pa coal line.


Class 95 (Locobase 3139)

Data from Charles McShane, The Locomotive Up to Date (McShane, 1899); see also .

Builder information from B Rumary list supplied by Allen Stanley in March 2004. Works numbers were 1858-1859 in October 1898.

McShane saluted these engines.as the heaviest built "up to the present time," these behemoths certainly were endowed with generous heating urface area and what should have been a free-flowing tube arrangement. Althought the grate is relatively small, it matched the railroad which ran for 12 miles and connects several steel works in the Pittlburgh area.

The DRA report commented on a relatively new construction method that relieved the cylinders of longitudinal stress imposed by the locomotive's frames. The method developed by Pittsburgh had proven "...to be of great value in reducing breakage of saddle castings." The casting extended "...from the bumper beam, well up to the saddle, securely bolted to top and bottm front frames." Also, the casting acted as a guide for the truck's bolster pin.


Class C-66 (Locobase 13453)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Vol 47, p. 49 and Vol 55, p. 265. Works numbers were 40075-40079 in July 1913 and 43360-43361, 43401-43403 in May 1916.

Locobase 13452 shows a series of large Consolidations with small grates that were delivered in 1909. With this batch of locomotives, the Union received big Consolidations that contained much larger grates in shallower fireboxes.

Specifications by Steve Llanso of Sweat House Media
Class10160259195
Locobase ID11544 3296 15329 13452 3139
RailroadUintah RailwayUnion RailroadUnity RailwaysUnion RailroadUnion Railroad
CountryUSAUSAUSAUSAUSA
Whyte2-8-02-8-02-8-02-8-02-8-0
Number in Class251142
Road Numbers10-11160-1642591-94, 100-104, 150-15495-96
Gauge3'StdStdStdStd
Number Built251142
BuilderBurnham, Williams & CoBaldwinBaldwinBurnham, Williams & CoPittsburgh
Year19041919192519091898
Valve GearStephensonWalschaertWalschaertWalschaertStephenson
Locomotive Length and Weight
Driver Wheelbase11.33'16.33'14.50'15.58'15.58'
Engine Wheelbase17.83'25.09'23.83'24.33'24'
Ratio of driving wheelbase to overall engine wheebase 0.64 0.65 0.61 0.64 0.65
Overall Wheelbase (engine & tender)60.12'56.21'60.50'54.79'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers55000 lbs240320 lbs200000 lbs225200 lbs208000 lbs
Engine Weight64000 lbs260260 lbs218000 lbs250300 lbs230000 lbs
Tender Light Weight143740 lbs126000 lbs150000 lbs104000 lbs
Total Engine and Tender Weight404000 lbs344000 lbs400300 lbs334000 lbs
Tender Water Capacity2500 gals8000 gals6000 gals7500 gals5000 gals
Tender Fuel Capacity (oil/coal)12 tons10 tons12 tons10 tons
Minimum weight of rail (calculated)23 lb/yard100 lb/yard83 lb/yard94 lb/yard87 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter36"55"51"54"54"
Boiler Pressure160 psi190 psi200 psi210 psi200 psi
Cylinders (dia x stroke)14" x 18"25" x 32"23" x 28"24" x 32"23" x 32"
Tractive Effort13328 lbs58727 lbs49373 lbs60928 lbs53292 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.13 4.09 4.05 3.70 3.90
Heating Ability
Firebox Area84 sq. ft241 sq. ft222 sq. ft236 sq. ft205.50 sq. ft
Grate Area13.70 sq. ft54.40 sq. ft49.75 sq. ft36.90 sq. ft33.50 sq. ft
Evaporative Heating Surface800 sq. ft2771 sq. ft2662 sq. ft3801 sq. ft3322 sq. ft
Superheating Surface654 sq. ft608 sq. ft
Combined Heating Surface800 sq. ft3425 sq. ft3270 sq. ft3801 sq. ft3322 sq. ft
Evaporative Heating Surface/Cylinder Volume249.45152.42197.71226.86215.88
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation219210336995077496700
Same as above plus superheater percentage2192123001184177496700
Same as above but substitute firebox area for grate area1344054490528364956041100
Power L1365294481167156195088
Power MT585.55346.69514.60220.03215.71

Specifications by Steve Llanso of Sweat House Media
ClassC-66
Locobase ID13453
RailroadUnion Railroad
CountryUSA
Whyte2-8-0
Number in Class5
Road Numbers155-159
GaugeStd
Number Built5
BuilderBaldwin
Year1916
Valve GearBaker
Locomotive Length and Weight
Driver Wheelbase15.58'
Engine Wheelbase24.33'
Ratio of driving wheelbase to overall engine wheebase 0.64
Overall Wheelbase (engine & tender)61.12'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers238000 lbs
Engine Weight260000 lbs
Tender Light Weight144000 lbs
Total Engine and Tender Weight404000 lbs
Tender Water Capacity8000 gals
Tender Fuel Capacity (oil/coal)12 tons
Minimum weight of rail (calculated)99 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter54"
Boiler Pressure190 psi
Cylinders (dia x stroke)25" x 32"
Tractive Effort59815 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.98
Heating Ability
Firebox Area205 sq. ft
Grate Area58.60 sq. ft
Evaporative Heating Surface3772 sq. ft
Superheating Surface
Combined Heating Surface3772 sq. ft
Evaporative Heating Surface/Cylinder Volume207.47
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation11134
Same as above plus superheater percentage11134
Same as above but substitute firebox area for grate area38950
Power L14512
Power MT167.18


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