Burlington, Cedar Rapids & Northern / Chicago, Rock Island & Pacific / Choctaw & Memphis / Choctaw Oklahoma & Gulf / Rock Island 4-6-0 "Ten-wheeler" Locomotives of the USA


Class Details by Steve Llanso of Sweat House Media

Class 105/D-19, D-21 (Locobase 7198)

Data from RI 11 - 1903 Locomotive Class & Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection; additional help from rosters supplied by Stanley in August 2013. Works numbers were 1962-1971 in August 1891.

Many of the Ten-wheelers in the Rock Island book have the same road-class ID, which can complicate the compiler's effort to follow the trail from an originating railroad (in this case, the BCR&N) to the absorbing railroad (the Chicago, Rock Island & Pacific).

The Rock's motive power class for this ten-locomotive set was MP53D.

The 1129-1131 were sent to another Rock Island acquisition--the Saint Paul & Kansas City Short Line--after its lease by the RI in November 1913.

The class began heading toward the scrapyard in March 1922. Most were gone by March 1928 with only the 1130 remaining in service until 1934.


Class 131 / D17 / T17 (Locobase 12375)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 22, p. 188. Works numbers were 17159-17161 in October 1899, 17387 in January 1900, 19180, 19181 in July 1901, 20306

20307 in April 1902 and 20441-20442 in May.

The specs for this quartet of modestly scaled Ten-wheelers shows that they were ordered with 18"-diameter cylinders. Other sources show 16".

The CO & G renumbered the class in several series soon after the first engines arrived on the road, grouping the class as 107-116. When the Rock Island took over, they renumbered the set 1152-1161.


Class 70/D-19 & 20 50A & B (Locobase 7204)

Data from RI 11 - 1903 Locomotive Class & Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection. Works numbers were 2685-2687 in July 1896.

Most noticeable about these Brooks engines was the large firebox heating surface area for a narrow firebox. They had arched cab windows. 1101 ran on 69" drivers, which reduced calculated tractive effort to 18,680 lb.


Class 81 / D17 / T17 (Locobase 12502)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 22, p. 188. Works numbers were 19180, 19181 in July 1901, 20306-20307 in April 1902 and 20441-20442 in May.

Two years after the Choctaw & Memphis ordered the quartet shown in Locobase 12375, its sister road bought six for itself. The specs for this quartet of modestly scaled Ten-wheelers shows that they were ordered with 18"-diameter cylinders. Other sources show 16" (406 mm).

The CO & G renumbered the class in several series soon after the first engines arrived on the road, grouping the class as 111-116.

When the Rock Island took over, they renumbered the set of C&M and CO&G engines in a single series from 1152-1161. All were scrapped in the mid-1920s.


Class D-17/52-A (Locobase 7195)

Data from RI 11 - 1903 Locomotive Class & Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection. Works numbers were 699-600 in December 1883, 726-728 in April 1884, 743-747 in September 1884.

The profile of this freight Ten-wheeler class shows a slender boiler with no significant taper at the crown of the firebox. Indeed, the firebox is quite shallow and rides above the very small drivers. The class had a short wheelbases as well as being quite low-slung. See Locobase 7196 for the 57" driver variant.


Class D-17/52-B (Locobase 7196)

Data from RI 11 - 1903 Locomotive Class & Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection. Works numbers 747-748 in September 1884.

As noted in Locobase 7194, this design had a very low profile with a shallow firebox riding above the driving axles. In two instance, the railroad increased the driver diameter and the 52-B was the result.


Class D-17/53-A (Locobase 7193)

Data from RI 11 - 1903 Locomotive Class & Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection. Works numbers were 1078-1082 in September 1885.

The one difference between this quintet and the D-17/53-B is driver diameter; see Locobase 7194. After service with the B, CR & N and the Rock Island, #1112-1113 were sold to the Canadian Northern in October 1907 as the 143-144; the 1116 followed in 1912 as 145.


Class D-17/53-B (Locobase 7194)

Data from RI 11 - 1903 Locomotive Class & Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection. Works numbers were 1040-1042 and 1047-1048.

Possibly the larger diameter of this set of 5 D-17s (see the 57" version in Locobase 7193) was to enable the locomotives to handle mixed-traffic trains more readily.


Class D-18-25-B (Locobase 7202)

Data from RI 11 - 1903 Locomotive Class & Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection and DeGolyer, Volume 17, p. 256. Works numbers were 12795-12797, 12808 in July 1892.

After the 25-engine class shown in Locobase 7203, Baldwin added four more with slightly larger cylinders and a 2"(50.8 mm)-longer wheelbase. Adhesion weight also grew by 2 1/2" tons (2.27 metric tons) as the driver diameter increased by 4" (102 mm).

The Rock Island built two more to this design, but with smaller grates; See Locobase 7201.

See Locobase 7200 for the later modification to the 899.


Class D-18/53-C (Locobase 7197)

Data from RI 11 - 1903 Locomotive Class & Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection. Works numbers were 1078-1082.

Yet a third set of Ten-wheelers (the others being shown in Locobase 7193-7194) for which the only difference is driver diameter. In this particular case, the result is a pure drag-freight engine. They were later renumbered 150-154 before being taken into the Rock Island.


Class D-19 (Locobase 2979)

Data from Catalogue Descriptive of Simple and Compound Locomotives built by Brooks Locomotive Works, Dunkirk, NY (Buffalo, NY: Matthew-Northrup Company, 1899). Also from RI 22 - 1904 Locomotive Class and Locomotive Diagrams book supplied in May 2005 by Allen Stanley from his extensive Raildata collection. Works numbers were 2027-2032 in February 1892 and 2084-2090 in May.

Firebox had 18 sq ft of arch pipes.


Class D-19 (Locobase 7203)

Data from RI 11 - 1903 Locomotive Class & Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection. See also DeGolyer, Volume 16, p. 124. Works numbers were 11418-11419, 11422-11423, 11429-11430, 11442, 11449, 11452-11453, 11459-11460 in December 1890.

Baldwin delivered the first of these Ten-wheelers in 1891. Compared to many other Ten-wheelers of the time, the profile showed a fuller boiler supplying larger cylinders. Placing the firebox over the rear two driving axles rather than between them allowed a shortening of the driving wheelbase.

This twelve-engine set was the first of the designs to go into service; the Brooks locomotives of a year later appear in Locobase 2979. The Rock Island's 1903 book showed some changes including weight on the drivers and engine weight, two fewer tubes in the boiler, 1" thicker tires. The firebox area was reduced to 142 sq ft (13.2 sq m), but an additional 21.7 sq ft (2 sq m) of "Cir F" (i.e. arch "pipes") increased direct heating surface area to 163.7 sq ft (15.2 sq m).

As with many of its engines, the railroad got more than 30 years out of each locomotive, with the 1212 and 1214 lasting until June and April 1934, respectively.


Class D-20-25-E (Locobase 7200)

Data from RI 11 - 1903 Locomotive Class & Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection.

Locobase had orginally supposed that this engine was delivered with longer-stroke cylinders than the other four in the class shown in Locobae 7202. But the original Baldwin specs referenced in 7202 show that all five of the class was delivered with the same cylinder volume.


Class D-21-25-B (Locobase 7201)

Data from RI 11 - 1903 Locomotive Class & Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection.

When the Rock Island built two of its own Ten-wheelers using the boiler and grate dimensions of the earlier Baldwin engine (Locobase 7200), it shortened the piston stroke and raised the boiler pressure.


Class D-21-53-F (Locobase 7199)

Data from RI 11 - 1903 Locomotive Class & Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection. Works numbers were 2558-2562 in August 1895 and 2575-2579 in September.

These followed by four years another set of Brooks Ten-wheelers (Locobase 2979). Differences lay in the increased boiler pressure, a slightly larger grate, and taller drivers.


Class D-22-24-A (Locobase 7205)

Data from RI 11 - 1903 Locomotive Class & Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection. See also DeGolyer, Volume 18, p. 145. Works numbers were 13321-13323, 13325, 13336, 13340 in March 1893.

Baldwin continued producing its run of Ten-wheelers for the Rock Island with this set of smaller freight locomotives. The cylinder volume stayed the same as the earlier (Locobase 7202) D-18s but the layout was more compact


Class D-23-25-D (Locobase 7206)

Data from RI 11 - 1903 Locomotive Class & Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection.

Using the same design as its passenger pair of 1897 (Locobase 7201), the Rock Island ran off a dozen mixed-traffic locomotives. The combination of smaller drivers and longer piston stroke raised the tractive effort.


Class D-24-14-D (Locobase 7207)

Data from RI 11 - 1903 Locomotive Class & Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection. Works number was 18344 in October 1900.

A true express passenger engine with a big boiler, tall drivers, and 11" piston valves for steam admission. They were the simple-expansion conversions of the Vauclain compounds described in Locobase 7208. Obviously, the maintenance headache of adjusting the valves quickly overcame the reputed economy advantages of compound operation.


Class D-25-25-C (Locobase 7209)

Data from RI 11 - 1903 Locomotive Class & Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection. 2688-2692 in August 1896.

In same year as the mixed-traffic engines came these freight locomotives. As the end of the century loomed, cylinder volume, boiler capacity both began to burgeon. Grate area followed but the great jump was still to come.


Class D-28-14-C (Locobase 7211)

Data from RI 11 - 1903 Locomotive Class & Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection.

Brooks delivered over 120 Ten-wheelers of the same design to the Rock Island beginning in 1902. Sturdy Ten-wheelers for passenger service, these locomotives had a curiously outdated set of domes on the boiler. From the start, however, they used Walschaert radial valve gear outside that actuated 11"piston valves. Like the 68"-drivered 14-B (Locobase 7213) and 14-A (Locobase 7216), the 14-Cs had 22 sq ft of circulating tubes that supplemented the firebox heating surface


Class D-28-54-B (Locobase 7210)

Data from RI 11 - 1903 Locomotive Class & Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection.

At the same time Brooks was supplying the 57" freight engines (Locobase 7212), it delivered these 5 mixed-traffic locomotives. Like the freighters, the 54-Bs had 10" piston valves actuated by outside Walschaerts gear and Belpaire fireboxes.


Class D-29-14-B / T-27 (Locobase 7213)

Data from RI 11 - 1903 Locomotive Class & Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection.

As Brooks was supplying over 120 Ten-wheelers including fifteen for fast passenger service (Locobase 7211), it was also delivering this local passenger variant. Like the 14-C, the 14-Bs had 22 sq ft of circulating tubes that supplemented the firebox heating surface; they also had 11" piston valves.


Class D-29-54-A (Locobase 7212)

Data from RI 11 - 1903 Locomotive Class & Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection.

At the turn into the 20th century, Brooks enlarged its Ten-wheeler designs for the Rock Island and delivered this quintet. The five had a larger, shallower grate within a Belapaire firebox and larger cylinders with a boiler that was not quite outsized. The radial valve gear operated 10" piston valves. The cab windows were oddly placed low in the cab wall and had a continuous arch over two panes. See Locobase 7209 for the mixed-traffic variant.


Class D-30-14-A (Locobase 7216)

Data from RI 11 - 1903 Locomotive Class & Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection.

Sturdy Ten-wheelers for passenger service, these locomotives had a curiously outdated set of domes on the boiler. From the start, however, they used Walschaert radial valve gear outside that actuated 11" (279 mm) piston valves. Like the 68"-drivered 14-B (Locobase 7213), and the 73" 14-C, the 14-As had 22 sq ft (2.04 sq m) of circulating tubes that supplemented the firebox heating surface.

1454 had a slight variation in its firebox layout in which 27 sq ft (2.51 sq m) of circulating flues combined with 183.1 sq ft (17.01 sq m) of firebox heating surface to produce 210.1 sq ft (19.52 sq m) of direct heating surface.


Class D-30-14-E, 14H/T-28 (Locobase 7215)

Data from RI 11 - 1903 Locomotive Class & Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection. Works numbers were 17743 and 17782 in May 1900.

As noted in Locobase 7214, Vauclain compounds had only a short vogue on the Rock Island. By 1904, 1473-1474, 1478-1480, 1482-1483, and 1487 had been converted to the D-30 simple-expansion configuration. Each cylinder was now supplied by an 11" (279 mm) piston valve. By 1912, all seventeen engines had been converted.

The class now consisted of two motive power subclasses:

14-E applied to 1474, 1478-1480, 1482-1483, and 1487, which applied to the early conversions, and

14-H referred to 1472-1473, 1475-1477, 1481, 1484-1486, 1488, which described the later set. (1473's place is inconsistently shown in the Rock Island rosters.)

By 1924, boiler pressure had decreased to 190 psi and the class was redesignated T-28 (Ten-wheeler producing approximately 28,000 lb tractive effort).


Class D-9/46-A (Locobase 7192)

Data from RI 11 - 1903 Locomotive Class & Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection.

Locobase enters this one Ten-wheeler because of its small size and early entry. He knows nothing about the original railroad (possibly the Iron Mountain & Southern) nor about the engine's subsequent career. He observes, however, that for the locomotive to appear in the 1904 book is testament enough to a certain value.


Class F-24-28-A (Locobase 7208)

Data from RI 11 - 1903 Locomotive Class & Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection. See also DeGolyer, Volume 23, pp. 160-161. Works numbers were 17718-17719 in May 1900 and 18314 and 18345 in October.

Baldwin delivered a slew of Ten-wheelers in 1900, most to a Vauclain compound design. This set was the high-wheeler express passenger trio, its cylinders filled through 13" (335 mm). See Locobase 7207 for the simple-expansion conversions and 7214 for the mixed-traffic Vauclain compound variant.


Class F-29-28-B (Locobase 7214)

Data from RI 11 - 1903 Locomotive Class & Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection. See also DeGolyer, Volume 23, p. 7. Works numbers 17720

17721 , 17743-17744, 17780-17783 in May 1900; 17802, 17818-17820, 17846, 17870 in June; and 18293-18294, 18313 in October.

The Baldwin express passenger Vauclain compounds shown in Locobase 7207 were joined by these seventeen mixed-traffic brothers. Like those others, these used a 13" (330 mm) piston valve to supply steam to each set of one HP and one LP cylinder.

As often happened with North American compounds, these were rebuilt as simple-expansion (20"x 28") engines.

They were scrapped in the mid-1930s.


Class T-31 - 1521 (Locobase 7228)

Data from RI to 1951 Locomotive Diagrams Combined supplied in May 2005 by Allen Stanley from his extensive Raildata collection.

This class is essentially identical to the T-31s of the 1550 class (Locobase 5361), except for their builder and a slightly lower number of boiler tubes.


Class T-31 - 1550 (Locobase 5361)

Data from table in June 1906 American Engineer and Railroad Journal (AERJ). See also "Report of Committee on Power ...Descriptions of Standard Types of Locomotives", AERJ, Vol (March 1905), pp. 84-85. Data also from RI to 1951 Combined Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection.

When they were built in 1905, they fulfilled the Rock Island Committee on Power's recommendations for a standard Ten-wheeler almost to the last digit. As proposed, the 4-6-0 would have one of two driver diameters: 69" (1,753 mm) for passenger, 63" (1,600 mm) for fast freight. This class filled the latter bill. (The Rock did not built the taller-drivered variant after it issued this report in 1905.)

Most of the class later received Walschaert outside radial valve gear. Nine of the class were fitted with superheaters and 12" piston valves; see Locobase 14463.


Class T-31 - 1550 - superheated (Locobase 14463)

Data from RI to 1951 Combined Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection.

The original design followed the recommendations of the Rock Island Committee on Power

for a standard fast-freight Ten-wheeler.; see Locobase 5361.

Beginning in 1927, Nine of Baldwin's class were later fitted with superheaters, Walschaert gear, and 12" (305 mm) piston valves. Road numbers of these superheated engines included 1557, 1560, 1565-66, 1569, 1574, 1581, 1586-87.

These freight Tenwheelers were highly satisfactory. Fifteen remained in service throughout World War II and half of those were only retired in the early 1950s..

NB: The Rock Island does not give a superheater area for the installation in the 1550s. But they do supply a figure for the 32 5 1/2" flues for a similar makeover of the 1630-class Consolidations. Taking account of the 5 fewer flues (and 4-element superheater units) and the 16" shorter flues, Locobase arrives at the figure given as an estimate.

Specifications by Steve Llanso of Sweat House Media
Class105/D-19, D-21131 / D17 / T1770/D-19 & 20 50A & B81 / D17 / T17D-17/52-A
Locobase ID7198 12375 7204 12502 7195
RailroadBurlington, Cedar Rapids & Northern (CRI&P)Choctaw & Memphis (CRI & P)Burlington, Cedar Rapids & Northern (CRI&P)Choctaw Oklahoma & Gulf (CRI & P)Burlington, Cedar Rapids & Northern (CRI & P)
CountryUSAUSAUSAUSAUSA
Whyte4-6-04-6-04-6-04-6-04-6-0
Number in Class104368
Road Numbers105-114/170-179/1229-1238/1129-1138131-13470-72/1101-110381-82, 139-142 / 111-11676-77, 79, 81-85/1104-1111
GaugeStdStdStdStdStd
Number Built104368
BuilderBrooksBurnham, Williams & CoBrooksBurnham, Williams & CoPittsburgh
Year18911899189619011883
Valve GearStephensonStephensonStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase16'13.83'14'13.83'10.25'
Engine Wheelbase26.04'24.06'24.33'24.06'21.54'
Ratio of driving wheelbase to overall engine wheebase 0.61 0.57 0.58 0.57 0.48
Overall Wheelbase (engine & tender)47.77'52.50'44.71'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers93000 lbs72000 lbs108000 lbs72000 lbs68750 lbs
Engine Weight124000 lbs100000 lbs137000 lbs100000 lbs93200 lbs
Tender Light Weight81700 lbs63000 lbs94800 lbs63000 lbs69750 lbs
Total Engine and Tender Weight205700 lbs163000 lbs231800 lbs163000 lbs162950 lbs
Tender Water Capacity3850 gals3000 gals4000 gals3000 gals3100 gals
Tender Fuel Capacity (oil/coal)8.5 tons tons11 tons tons7.5 tons
Minimum weight of rail (calculated)52 lb/yard40 lb/yard60 lb/yard40 lb/yard38 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter63"56"63"56"51"
Boiler Pressure180 psi160 psi180 psi160 psi149 psi
Cylinders (dia x stroke)18" x 24"18" x 24"18" x 26"18" x 24"18" x 24"
Tractive Effort18885 lbs18885 lbs20458 lbs18885 lbs19310 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.92 3.81 5.28 3.81 3.56
Heating Ability
Firebox Area142 sq. ft131 sq. ft170 sq. ft131 sq. ft98 sq. ft
Grate Area17.60 sq. ft17.10 sq. ft24.50 sq. ft17.10 sq. ft25 sq. ft
Evaporative Heating Surface1632 sq. ft1467 sq. ft1635 sq. ft1467 sq. ft1178 sq. ft
Superheating Surface
Combined Heating Surface1632 sq. ft1467 sq. ft1635 sq. ft1467 sq. ft1178 sq. ft
Evaporative Heating Surface/Cylinder Volume230.88207.54213.51207.54166.65
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation31682736441027363725
Same as above plus superheater percentage31682736441027363725
Same as above but substitute firebox area for grate area2556020960306002096014602
Power L162624483613344832989
Power MT445.33411.80375.58411.80287.55

Specifications by Steve Llanso of Sweat House Media
ClassD-17/52-BD-17/53-AD-17/53-BD-18-25-BD-18/53-C
Locobase ID7196 7193 7194 7202 7197
RailroadBurlington, Cedar Rapids & Northern (CRI & P)Burlington, Cedar Rapids & Northern (CRI & P)Burlington, Cedar Rapids & Northern (CRI & P)Rock Island (CRI&P)Burlington, Cedar Rapids & Northern (CRI & P)
CountryUSAUSAUSAUSAUSA
Whyte4-6-04-6-04-6-04-6-04-6-0
Number in Class25545
Road Numbers78, 80/142, 144/1217-1218/1117-111891-95/1112-111696-100/1119-1123895-899/1277-128086-90/160-164/1224-1228/1124-1128
GaugeStdStdStdStdStd
Number Built25545
BuilderPittsburghBrooksBrooksBurnham, Williams & CoBrooks
Year18841884188418921885
Valve GearStephensonStephensonStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase10.25'13.75'13.75'12.50'13.75'
Engine Wheelbase21.54'24.71'24.71'23'24.71'
Ratio of driving wheelbase to overall engine wheebase 0.48 0.56 0.56 0.54 0.56
Overall Wheelbase (engine & tender)44.71'45.27'45.27'48.54'45.27'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers68750 lbs67200 lbs67200 lbs107000 lbs69700 lbs
Engine Weight93200 lbs92400 lbs92400 lbs137000 lbs92700 lbs
Tender Light Weight69750 lbs67300 lbs67300 lbs75000 lbs67300 lbs
Total Engine and Tender Weight162950 lbs159700 lbs159700 lbs212000 lbs160000 lbs
Tender Water Capacity3100 gals3000 gals3000 gals3600 gals3000 gals
Tender Fuel Capacity (oil/coal)7.5 tons6.5 tons6.5 tons tons6.5 tons
Minimum weight of rail (calculated)38 lb/yard37 lb/yard37 lb/yard59 lb/yard39 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter57"57"61"68.75"51"
Boiler Pressure149 psi149 psi149 psi160 psi149 psi
Cylinders (dia x stroke)18" x 24"18" x 24"18" x 24"19.5" x 24"18" x 24"
Tractive Effort17278 lbs17278 lbs16145 lbs18053 lbs19310 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.98 3.89 4.16 5.93 3.61
Heating Ability
Firebox Area98 sq. ft127 sq. ft127 sq. ft158 sq. ft127 sq. ft
Grate Area25 sq. ft17 sq. ft17 sq. ft23.26 sq. ft17 sq. ft
Evaporative Heating Surface1178 sq. ft1395 sq. ft1395 sq. ft1898 sq. ft1395 sq. ft
Superheating Surface
Combined Heating Surface1178 sq. ft1395 sq. ft1395 sq. ft1898 sq. ft1395 sq. ft
Evaporative Heating Surface/Cylinder Volume166.65197.35197.35228.79197.35
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation37252533253337222533
Same as above plus superheater percentage37252533253337222533
Same as above but substitute firebox area for grate area1460218923189232528018923
Power L133404065435059403637
Power MT321.31400.08428.13367.16345.12

Specifications by Steve Llanso of Sweat House Media
ClassD-19D-19D-20-25-ED-21-25-BD-21-53-F
Locobase ID2979 7203 7200 7201 7199
RailroadRock Island (CRI&P)Rock Island (CRI&P)Rock Island (CRI & P)Burlington, Cedar Rapids & Northern (CRI&P)Burlington, Cedar Rapids & Northern (CRI & P)
CountryUSAUSAUSAUSAUSA
Whyte4-6-04-6-04-6-04-6-04-6-0
Number in Class13121210
Road Numbers813-825/1320-1332/1220-1232600-611/801-812/1308-1319/1208-1219899/1381/12811275-12761139-1148
GaugeStdStdStdStdStd
Number Built1312210
BuilderBrooksBurnham, Williams & CoRIRock IslandBrooks
Year1892189018971895
Valve GearStephensonStephensonStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase12.33'12.33'12.50'13.50'15'
Engine Wheelbase23'23'23'23'24.83'
Ratio of driving wheelbase to overall engine wheebase 0.54 0.54 0.54 0.59 0.60
Overall Wheelbase (engine & tender)46.83'46.75'48.71'48.71'46.56'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers106500 lbs102000 lbs107000 lbs107000 lbs90000 lbs
Engine Weight132000 lbs132000 lbs137000 lbs137000 lbs117000 lbs
Tender Light Weight76000 lbs75000 lbs78000 lbs81700 lbs
Total Engine and Tender Weight208000 lbs212000 lbs215000 lbs198700 lbs
Tender Water Capacity3600 gals3000 gals3600 gals4000 gals3850 gals
Tender Fuel Capacity (oil/coal)7 tons6 tons tons tons8.5 tons
Minimum weight of rail (calculated)59 lb/yard57 lb/yard59 lb/yard59 lb/yard50 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter63.75"63.75"68.75"68.75"57"
Boiler Pressure160 psi160 psi160 psi180 psi180 psi
Cylinders (dia x stroke)19" x 24"19" x 24"19.5" x 26"19.5" x 24"18" x 24"
Tractive Effort18483 lbs18483 lbs19557 lbs20309 lbs20872 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.76 5.52 5.47 5.27 4.31
Heating Ability
Firebox Area158 sq. ft158 sq. ft142 sq. ft142 sq. ft129 sq. ft
Grate Area24 sq. ft23 sq. ft21.70 sq. ft21.70 sq. ft18.70 sq. ft
Evaporative Heating Surface1898 sq. ft1898 sq. ft1890 sq. ft1890 sq. ft1466 sq. ft
Superheating Surface
Combined Heating Surface1898 sq. ft1898 sq. ft1890 sq. ft1890 sq. ft1466 sq. ft
Evaporative Heating Surface/Cylinder Volume240.99240.99210.30227.83207.40
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation38403680347239063366
Same as above plus superheater percentage38403680347239063366
Same as above but substitute firebox area for grate area2528025280227202556023220
Power L158025802530464645107
Power MT360.32376.21327.85399.55375.30

Specifications by Steve Llanso of Sweat House Media
ClassD-22-24-AD-23-25-DD-24-14-DD-25-25-CD-28-14-C
Locobase ID7205 7206 7207 7209 7211
RailroadChicago, Rock Island & Pacific (CRI&P)Burlington, Cedar Rapids & Northern (CRI & P)Rock Island (CRI & P)Burlington, Cedar Rapids & Northern (CRI & P)Rock Island (CRI & P)
CountryUSAUSAUSAUSAUSA
Whyte4-6-04-6-04-6-04-6-04-6-0
Number in Class6125515
Road Numbers826-831/1264-1269856-867/1252-12631351-13551270-12741323-1337
GaugeStdStdStdStdStd
Number Built6125515
BuilderBurnham, Williams & CoRock IslandRock IslandBrooksBrooks
Year18931899190318961902
Valve GearStephensonStephensonWalschaertWalschaertWalschaert
Locomotive Length and Weight
Driver Wheelbase11.50'13.33'14.60'12.33'14.50'
Engine Wheelbase21.67'23'26.08'23'26.08'
Ratio of driving wheelbase to overall engine wheebase 0.53 0.58 0.56 0.54 0.56
Overall Wheelbase (engine & tender)49.96'48.71'52.88'47.54'53'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers111000 lbs107000 lbs138400 lbs109500 lbs142000 lbs
Engine Weight129000 lbs137000 lbs178500 lbs142500 lbs182000 lbs
Tender Light Weight77800 lbs78000 lbs110000 lbs78000 lbs110000 lbs
Total Engine and Tender Weight206800 lbs215000 lbs288500 lbs220500 lbs292000 lbs
Tender Water Capacity4000 gals4000 gals5500 gals4000 gals5500 gals
Tender Fuel Capacity (oil/coal)8 tons tons10 tons7 tons10 tons
Minimum weight of rail (calculated)62 lb/yard59 lb/yard77 lb/yard61 lb/yard79 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter57"64.75"78.50"57.40"73"
Boiler Pressure165 psi180 psi200 psi180 psi210 psi
Cylinders (dia x stroke)19.5" x 24"19" x 26"20" x 28"19.5" x 26"21" x 26"
Tractive Effort22455 lbs22179 lbs24255 lbs26353 lbs28037 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.94 4.82 5.71 4.16 5.06
Heating Ability
Firebox Area158 sq. ft142 sq. ft221.80 sq. ft193.30 sq. ft221.80 sq. ft
Grate Area23.26 sq. ft21.70 sq. ft33.40 sq. ft24.50 sq. ft33.40 sq. ft
Evaporative Heating Surface1610 sq. ft1890 sq. ft2809 sq. ft2208 sq. ft2812 sq. ft
Superheating Surface
Combined Heating Surface1610 sq. ft1890 sq. ft2809 sq. ft2208 sq. ft2812 sq. ft
Evaporative Heating Surface/Cylinder Volume194.07221.52275.90245.69269.79
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation38383906668044107014
Same as above plus superheater percentage38383906668044107014
Same as above but substitute firebox area for grate area2607025560443603479446578
Power L1453559191007060839612
Power MT270.21365.86481.23367.42447.69

Specifications by Steve Llanso of Sweat House Media
ClassD-28-54-BD-29-14-B / T-27D-29-54-AD-30-14-AD-30-14-E, 14H/T-28
Locobase ID7210 7213 7212 7216 7215
RailroadRock Island (CRI & P)Rock Island (CRI & P)Rock Island (CRI & P)Rock Island (CRI&P)Rock Island (CRI&P)
CountryUSAUSAUSAUSAUSA
Whyte4-6-04-6-04-6-04-6-04-6-0
Number in Class5225842
Road Numbers1495-14991301-13221490-14941401-63, 1471, 1501-201472-1488
GaugeStdStdStdStdStd
Number Built522584
BuilderBrooksBrooksBrooksBrooksRock Island
Year19011902190019021903
Valve GearWalschaertWalschaertWalschaertWalschaertWalschaert
Locomotive Length and Weight
Driver Wheelbase14.33'14.50'14.50'14.50'14.60'
Engine Wheelbase24.87'26.08'24.87'26.08'26.08'
Ratio of driving wheelbase to overall engine wheebase 0.58 0.56 0.58 0.56 0.56
Overall Wheelbase (engine & tender)52.03'53'52.03'52.87'52.88'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers120000 lbs142000 lbs115000 lbs132000 lbs132000 lbs
Engine Weight154500 lbs182000 lbs149000 lbs174000 lbs178000 lbs
Tender Light Weight105139 lbs110000 lbs106139 lbs110000 lbs111000 lbs
Total Engine and Tender Weight259639 lbs292000 lbs255139 lbs284000 lbs289000 lbs
Tender Water Capacity4900 gals5500 gals4500 gals5500 gals5500 gals
Tender Fuel Capacity (oil/coal)12 tons10 tons13 tons10 tons10 tons
Minimum weight of rail (calculated)67 lb/yard79 lb/yard64 lb/yard73 lb/yard73 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter63"68.40"57"64.75"64.75"
Boiler Pressure200 psi200 psi200 psi200 psi190 psi
Cylinders (dia x stroke)20" x 26"21" x 26"20" x 26"20" x 26"20" x 28"
Tractive Effort28063 lbs28497 lbs31018 lbs27305 lbs27935 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.28 4.98 3.71 4.83 4.73
Heating Ability
Firebox Area190 sq. ft220.80 sq. ft190 sq. ft221.80 sq. ft221.80 sq. ft
Grate Area32.17 sq. ft33.40 sq. ft32.17 sq. ft33.40 sq. ft33.40 sq. ft
Evaporative Heating Surface2309 sq. ft2812 sq. ft2309 sq. ft2812 sq. ft2809 sq. ft
Superheating Surface
Combined Heating Surface2309 sq. ft2812 sq. ft2309 sq. ft2812 sq. ft2809 sq. ft
Evaporative Heating Surface/Cylinder Volume244.24269.79244.24297.44275.90
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation64346680643466806346
Same as above plus superheater percentage64346680643466806346
Same as above but substitute firebox area for grate area3800044160380004436042142
Power L172398566655089527891
Power MT398.98398.97376.70448.54395.38

Specifications by Steve Llanso of Sweat House Media
ClassD-9/46-AF-24-28-AF-29-28-BT-31 - 1521T-31 - 1550
Locobase ID7192 7208 7214 7228 5361
RailroadRock Island (CRI & P)Rock Island (CRI&P)Rock Island (CRI&P)Rock Island (CRI&P)Rock Island (CRI & P)
CountryUSAUSAUSAUSAUSA
Whyte4-6-04-6-04-6-04-6-04-6-0
Number in Class14171539
Road Numbers1981201-05, 1226-27/1351-1355, 1472-731226-1242/2051-2067/1472-14881521-15351550-1587
GaugeStdStdStdStdStd
Number Built14171539
BuilderBurnham, Parry, Williams & CoBurnham, Williams & CoBurnham, Williams & CoAlco-SchenectadyBurnham, Williams & Co
Year18681900190019051905
Valve GearStephensonWalschaertWalschaertStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase14.60'14.60'15'15'
Engine Wheelbase26.08'26.75'25.67'26.50'
Ratio of driving wheelbase to overall engine wheebase 0.56 0.55 0.58 0.57
Overall Wheelbase (engine & tender)52.88'53.53'56.54'56.45'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers48000 lbs138400 lbs132000 lbs141800 lbs131200 lbs
Engine Weight77700 lbs178500 lbs179000 lbs185800 lbs173720 lbs
Tender Light Weight62800 lbs110000 lbs110000 lbs144000 lbs144000 lbs
Total Engine and Tender Weight140500 lbs288500 lbs289000 lbs329800 lbs317720 lbs
Tender Water Capacity2850 gals5500 gals5500 gals7000 gals7000 gals
Tender Fuel Capacity (oil/coal)8 tons10 tons10 tons12 tons12 tons
Minimum weight of rail (calculated)27 lb/yard77 lb/yard73 lb/yard79 lb/yard73 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter56"78.50"64.75"63"63"
Boiler Pressure98 psi200 psi200 psi185 psi185 psi
High Pressure Cylinders (dia x stroke)16" x 22"15.5" x 28"15.5" x 28"22" x 26"22" x 26"
Low Pressure Cylinders (dia x stroke)26" x 28" (2)26" x 28" (2)
Tractive Effort8378 lbs21496 lbs26061 lbs31410 lbs31410 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.73 6.44 5.07 4.51 4.18
Heating Ability
Firebox Area70 sq. ft221.80 sq. ft221.80 sq. ft162 sq. ft160.80 sq. ft
Grate Area11.80 sq. ft33.40 sq. ft33.40 sq. ft44.90 sq. ft44.90 sq. ft
Evaporative Heating Surface925 sq. ft2809 sq. ft2809 sq. ft2536 sq. ft2587 sq. ft
Superheating Surface
Combined Heating Surface925 sq. ft2809 sq. ft2809 sq. ft2536 sq. ft2587 sq. ft
Evaporative Heating Surface/Cylinder Volume180.68459.36459.36221.69226.15
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation11566680668083078307
Same as above plus superheater percentage11566680668083078307
Same as above but substitute firebox area for grate area686044360443602997029748
Power L122785958491556825758
Power MT313.88284.72246.27265.02290.26

Specifications by Steve Llanso of Sweat House Media
ClassT-31 - 1550 - superheated
Locobase ID14463
RailroadRock Island (CRI & P)
CountryUSA
Whyte4-6-0
Number in Class9
Road Numbers1557+
GaugeStd
Number Built
BuilderCRI&P
Year1927
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase15'
Engine Wheelbase26.50'
Ratio of driving wheelbase to overall engine wheebase 0.57
Overall Wheelbase (engine & tender)56.46'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers138200 lbs
Engine Weight182720 lbs
Tender Light Weight144000 lbs
Total Engine and Tender Weight326720 lbs
Tender Water Capacity7000 gals
Tender Fuel Capacity (oil/coal)12 tons
Minimum weight of rail (calculated)77 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter63"
Boiler Pressure185 psi
Cylinders (dia x stroke)22" x 26"
Tractive Effort31410 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.40
Heating Ability
Firebox Area207 sq. ft
Grate Area44.90 sq. ft
Evaporative Heating Surface2078 sq. ft
Superheating Surface428 sq. ft
Combined Heating Surface2506 sq. ft
Evaporative Heating Surface/Cylinder Volume181.66
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation8307
Same as above plus superheater percentage9719
Same as above but substitute firebox area for grate area44805
Power L111827
Power MT566.01

Reference


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