Denver & Rio Grande / Florence & Cripple Creek / Rio Grande Western 4-6-0 "Ten-wheeler" Locomotives of the USA


Class Details by Steve Llanso of Sweat House Media

Class 145 / T-19 (Locobase 12248)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 17, p. 234. Works numbers were 15561-15564 in November 1897. See also Railway Age and Northwestern Reporter, Vol 24 (24 December 1897), p. 1039.

Locobase 12021 shows the earlier class of mid-sized Ten-wheelers delivered to the RGW in 1892. Five years later, Baldwin supplied this quartet, which enlarged most of the dimensions of the earlier engines.

The Online resource for the Denver & Rio Grande Western railroad and its constituents says that these were originally completed as Vauclain compounds (http://www.drgw.org/data/steam/roster/rgs001.htm, last accessed 13 February 2011). Contemporary resources including the specifications page and the Railway Age article clearly include the simple-expansion 19" x 26' cylinders shown in this entry.

70 was dismantled in August 1924.


Class 150 / T-26 (Locobase 11149)

Data from DeGolyer, Volume 20, p. 189. Baldwin works numbers were 14989-14990 in August 1896.

The 1892 Ten-wheelers shown in Locobase 12021 suddenly seem small compared to these these hefty examples from four years later. The 1896 design pressed their boilers harder, offered more grate area, and marshalled considerably more heating surface area. Among those being built in the US, they fell in the top 20% for size.

The class shown here used a boiler with 34 fewer tubes, although the firebox retained the same dimensions as the earlier engines. Otherwise they were very similar.

The Baldwin specs outline the service these locomotives were expected to perform. They would pull eight 40-ton cars between Denver and Pueblo in 3 1/2 hours and 6 cars in 3 hours; both timings included 15 minutes for stops. The design was guaranteed by Baldwin to produce 1,500 hp.


Class 150 / T-26 (Locobase 16187)

Data from "Denver & Rio Grande Locomotives", Railway Age, Volume 24, No 24 (17 December 1897), p. 1015. See also DeGolyer, Volume 21, pp. 123 and 239. Works numbers were 15692-15693 in January 1898, and 16178-16183 in September 1898.

Locobase split this class in two based on the following reconstruction of events. The first two locomotives of the 150 class, which are described in 11149, were delivered in 1896 with relatively large boilers. Then the Rio Grande built two of their own


Class 170/T-28 (Locobase 2968)

Data from http://www.sound.net/~drgw/history/drg2.htm; most data from Catalogue Descriptive of Simple and Compound Locomotives built by Brooks Locomotive Works, Dunkirk, NY (Buffalo, NY: Matthew-Northrup Company, 1899). Works numbers were 3196-3205 in May 1899..

Relatively high-pressured Ten-wheelers (for the time of construction). Cylinder size was later reduced to 20' x 26".

Retired in from 1926 to 1928


Class 540 / TF-18 (Locobase 7627)

Data from WP 2 - 1946 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection.

The Denver & Rio Grande roster presented by M. Keith Williams on http://www.drgw.org/data/steam/roster/drg008.htm (accessed 3 July 2006) shows that Rome delivered 10 of these in two batches. 540-545 were works# 536-541 and were produced in 1889-1890. A year later 546-549 (works# 672-675) were added.

Most were retired in the mid1920s. 543 was sold to Deep Creek Railway as their #1 in 1916. 546 served the Rio Grande for 15 years before being sold to the Western Pacific as their 126; #675 also went to the WP in the same sale as 127. The WP almost immediately sold 126 to its subsidiary, the Tidewater Southern, which reduced the driver diameter to 55" and increased the calculated tractive effort to 19,228 lb. Frank Brehm's WP roster ì

http://www.wplives.com/motivepower/srosters/Class_126_Roster__/class_126_roster__.html, accessed 3 July 2006, says that the 126 stayed in service with the TS as their #1 until 1947. Sister 127 (works #675) was withdrawn in 1923 and scrapped in 1930.


Class 61 (Locobase 12021)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 17, p. 234. Works numbers were 12578 in March 1892 and 12596 in April.

This pair of simple-expansion Ten-wheelers was followed by 4 similar engines powered by Vauclain compounds with two 14" HP and two 24" LP cylinders.

550-551 went to scrap in 1924.


Class T-19-85 (Locobase 6820)

Data from D&RGW 12 - 1937 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection.

All of the six Ten-wheelers delivered to the F & CC in 1899 had names -- 20 was Portland, 21 Isabella, 24 Last Dollar -- were distributed to other roads when the standard-gauge Cripple Creek & Colorado Southern took over the road in 1916. As noted in Locobase 7701, two went to an SP subsidiary. Three of the other 4 -- Schenectady works numbers 5007, 5421. and 5008, respectively -- were sold to the Rio Grande Southern.

25 was dismantled in 1940, 22 went out of service in 1942 and was dismantled in 1946, and 20 was procured by the Rocky Mountain Railroad Club in 1952.


Class T-29 (Locobase 1456)

Data from 1937 D & RGW locomotive diagram book supplied in May 2005 by Allen Stanley from his extensive Raildata collection.

Similar to the T-31 Ten-Wheelers of 1902, but intended for faster service and mounted on taller drivers. 763 had been built with 67" drivers, but was re-fitted with 63" sometime later, becoming a T-31 in the process.

Scrapped over a decade from 1939-1948. Engine numbers reflect D&RGW renumbering in 1924.


Class T-31 (Locobase 10760)

Data from Angus Sinclair, Twentieth Century Locomotives (New York: Railway and Locomotive Engineering, 1904), pp.538-540. Works numbers were 20381-20383, 20404-

20405, 20411-20412, 20429-20431.

Similar to the T-28 Ten-Wheelers of 1899, but delivered as Vauclain compounds. Sinclair explains that adopting the compound was a response to the need to couple a helper (banking) engine to push trains over the many grades that "...practically amounted to double heading each train half way over the division and then returning a light engine to one of the division termini."

This class was later simpled and superheated; see Locobase 1455.


Class T-31 - superheated (Locobase 1455)

Data from http://www.sound.net/~drgw/history/drg2.htm and from D&RGW 1956 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection.

Similar to the T-28 Ten-Wheelers of 1899, but fitted with a cylinder 1 inch larger in diameter. Scrapped in 1936. Engine numbers reflect D&RGW renumbering in 1924.

NB: Tube length is an estimate based on the calculation of tube surface area by subtracting reported firebox heating surface from reported total evaporative heating surface.

Specifications by Steve Llanso of Sweat House Media
Class145 / T-19150 / T-26150 / T-26170/T-28540 / TF-18
Locobase ID12,248 11,149 16,187 2968 7627
RailroadRio Grande Western (D & RGW)Denver & Rio Grande (D&RGW)Denver & Rio Grande (D&RGW)Denver & Rio Grande (D&RGW)Denver & Rio Grande (D&RGW)
CountryUSAUSAUSAUSAUSA
Whyte4-6-04-6-04-6-04-6-04-6-0
Number in Class44121010
Road Numbers70-73 / 715-718 / 526-28, 525700-701702-711/542 544, 535-539, 545-546720-729540-549
GaugeStdStdStdStdStd
Number Built44121010
BuilderBurnham, Williams & CoBurnham, Williams & CoBurnham, Williams & CoBrooksNew York
Year18971896189618991889
Valve GearStephensonStephensonStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft)1312.5012.501311.71
Engine Wheelbase (ft)2423.3323.3323.5822.04
Ratio of driving wheelbase to overall engine wheebase 0.54 0.54 0.54 0.55 0.53
Overall Wheelbase (engine & tender) (ft)5250.8350.8353.8948.96
Axle Loading (Maximum Weight per Axle) (lbs)30,800
Weight on Drivers (lbs)112,000115,000115,000124,00097,400
Engine Weight (lbs)144,600146,000146,000160,000114,800
Tender Loaded Weight (lbs)84,000100,000100,000115,00083,986
Total Engine and Tender Weight (lbs)228,600246,000246,000275,000198,786
Tender Water Capacity (gals)50005500550055003500
Tender Fuel Capacity (oil/coal) (gals/tons)101836
Minimum weight of rail (calculated) (lb/yd)6264646954
Geometry Relating to Tractive Effort
Driver Diameter (in)6763636360
Boiler Pressure (psi)185200160210160
High Pressure Cylinders (dia x stroke) (in)19" x 26"20" x 26"20" x 26"21" x 26"18" x 24"
Tractive Effort (lbs)22,02928,06322,45132,48717,626
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.08 4.10 5.12 3.82 5.53
Heating Ability
Firebox Area (sq ft)145180180165124
Grate Area (sq ft)28.50353533.5024.30
Evaporative Heating Surface (sq ft)21192301203424221778
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)21192301203424221778
Evaporative Heating Surface/Cylinder Volume248.36243.39215.15232.37251.54
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation52737000560070353888
Same as above plus superheater percentage52737000560070353888
Same as above but substitute firebox area for grate area26,82536,00028,80034,65019,840
Power L168867110521468695428
Power MT406.63408.91299.87366.38368.58

Specifications by Steve Llanso of Sweat House Media
Class61T-19-85T-29T-31T-31 - superheated
Locobase ID12,021 6820 1456 10,760 1455
RailroadRio Grande Western (D & RGW)Florence & Cripple Creek (D & RGW)Denver & Rio Grande (D&RGW)Denver & Rio Grande (D&RGW)Denver & Rio Grande (D&RGW)
CountryUSAUSAUSAUSAUSA
Whyte4-6-04-6-04-6-04-6-04-6-0
Number in Class24341010
Road Numbers61-62 /550-55120-21, 24-25 / 20, 22, 25760-7931001-1010 / 750-759750-759
GaugeStd3'StdStdStd
Number Built243410
BuilderBurnham, Williams & CoSchenectadyAlco-SchenectadyBurnham, Williams & CoD&RG
Year18921899190819021902
Valve GearStephensonStephensonStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft)11.75 9.7513.5013.5013.50
Engine Wheelbase (ft)22.9618.1724.4224.8324.33
Ratio of driving wheelbase to overall engine wheebase 0.51 0.54 0.55 0.54 0.55
Overall Wheelbase (engine & tender) (ft)41.7566.7553.1257.92
Axle Loading (Maximum Weight per Axle) (lbs)49,000
Weight on Drivers (lbs)93,00069,000145,000131,500131,500
Engine Weight (lbs)120,00085,000184,000178,640178,600
Tender Loaded Weight (lbs)51,600147,400111,360
Total Engine and Tender Weight (lbs)136,600331,400290,000
Tender Water Capacity (gals)3450250070006000
Tender Fuel Capacity (oil/coal) (gals/tons)515
Minimum weight of rail (calculated) (lb/yd)5238817373
Geometry Relating to Tractive Effort
Driver Diameter (in)6642676363
Boiler Pressure (psi)175180200210200
High Pressure Cylinders (dia x stroke) (in)19" x 24"16" x 20"21" x 26"15.5" x 26"21" x 26"
Low Pressure Cylinders (dia x stroke) (in)26" x 26"
Tractive Effort (lbs)19,52718,65129,09326,11530,940
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.76 3.70 4.98 5.04 4.25
Heating Ability
Firebox Area (sq ft)150.5086.88193196211
Grate Area (sq ft)24.9014.0833.6034.4034.40
Evaporative Heating Surface (sq ft)18311124218826142194
Superheating Surface (sq ft)391391
Combined Heating Surface (sq ft)18311124257926142585
Evaporative Heating Surface/Cylinder Volume232.48241.50209.92460.35210.50
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation43582534672072246880
Same as above plus superheater percentage43582534772872247912
Same as above but substitute firebox area for grate area26,33815,63844,39041,16048,530
Power L16315421914,296496013,636
Power MT449.10404.40652.08249.47685.83

Photos

Reference


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