IC: Chicago, Memphis & Gulf / Illinois Central / Newport News & Mississippi Valley / Ohio Valley / Vicksburg, Shreveport & Pacific 4-4-0 "American" Locomotives in the USA


Class Details by Steve Llanso of Sweat House Media

Class 10 (Locobase 7035)

Data from the IC 1911 Locomotive Data and 1913ca Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. See also DeGolyer, Volume 15, p.189. Works numbers were 10421 and 10424 in November 1889.

Possessing a bigger boiler than most of the other Eight-wheelers that wound up on the Illinois Central, these engines didn't have a comparably sized grate. As a consequence, they probably ran short of steam more readily.

As noted in Locobase 7000, the ex-OV was leased to the Illinois Central for 99 years in 1897 and these two engines were taken into the IC motive power roster. 4954 retired more than 30 years later in July 1929, but 4953 lasted almost 6 years longer before its withdrawal in June 1935.


Class 1901 (Locobase 7028)

Data from the IC 1911 Locomotive Data and 1913ca Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange.

As the IC was turning out Moguls in 1888 (see Locobase 7016), it took the same boiler and grate and made passenger-engine Americans out of the basic design.


Class 1905 (Locobase 7029)

Data from the IC 1911 Locomotive Data and 1913ca Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange.

Much of the IC's 19th-Century locomotive roster consisted of freight or mixed-traffic engines. In this year, however, Brooks provided 25 locomotives in two classes. The more common was the group described in Locobase 7031. The sextet represented here had the tallest drivers by far of any IC engines of the period, of a diameter suitable for true express work.


Class 1912 (Locobase 7031)

Data from the IC 1911 Locomotive Data and 1913ca Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange.

As noted in Locobase 7029, most of the IC's locomotive roster in the 19th-Century consisted of freight or mixed-traffic locomotives. This relatively numerous class was typical of the railroad.


Class 1930 (Locobase 7032)

Data from the IC 1911 Locomotive Data and 1913ca Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange.

Rogers supplied two sets of Americans to the IC in the last decade of the 19th Century. They seem to have used the same grate, but had different boilers. See Locobase 7033 for the other variant.


Class 1933 (Locobase 7033)

Data from the IC 1911 Locomotive Data and 1913ca Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange.

This septet had the same running gear and cylinders as the Rogers trio that was delivered to the IC the year before. The firebox was a bit smaller and the boiler had 8 fewer tubes. The difference in tube heating surface doesn't quite compute but both the 1911 listing and the 1913 diagram insist on the numbers given in the specs.


Class 1940 (Locobase 7030)

Data from the IC 1911 Locomotive Data and 1913ca Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange.

The long wheelbase on these Brooks engines comes from the tradtional placement of the firebox between the driving axles. Given the long span between the leading driving axle and the truck, this engine had a low and overextended profile.


Class 2, 4-5, 5-7/2196 (Locobase 7042)

Data from the IC 1911 Locomotive Data and 1913ca Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. See also DeGolyer, Volume 12, p. 224. Works numbers were 7715 in November 1885, 7963 in May 1886, and 8429 in March 1887, and 8713-8714 in August.

Like the other IC Eight-wheelers of the time, these were among the lightest and smallest Americans in service. They all wound up on the Illinois Central.

(7961 - #3 in B & ASL service - became 3 on the Ohio Valley. It did not join the others on the IC, apparently.)


Class 2157 (Locobase 7037)

Data from the IC 1911 Locomotive Data and 1913ca Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange.

A pair of Americans, about average for the time in the size of their boilers, but possessing small grates, small fireboxes, and relatively modest adhesive weight.


Class 2169 (Locobase 7038)

Data from the IC 1911 Locomotive Data and 1913ca Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange.

Like their Rogers-built stablemates (Locobase 7037), these home-built Americans were among the smallest of that wheel arrangement in service in the mid-1880s. Yet, as late as 1913, they still held places in the IC's roster. One suspects that the low axle-loading had a lot to do with their longevity.


Class 2180 (Locobase 7039)

Data from the IC 1911 Locomotive Data and 1913ca Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange.

As the IC built its own Americans, it also bought a pair from Pittsburgh. The IC engines' boilers were bigger but the firebox was about the same size and the locomotives generated about the same amount of power.


Class 2184 (Locobase 7040)

Data from the IC 1911 Locomotive Data and 1913ca Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange.

Even for the time, these were small locomotives in every important respect: boiler size, grate and firebox areas, and relatively modest adhesive weight. The latter is perhaps most indicative of the intent of the design. These were light-footed engines that would be welcome on almost any branch line.


Class 2190 (Locobase 7043)

Data from the IC 1911 Locomotive Data and 1913ca Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange.

These were par-for-the-course IC Eight-wheelers, which meant that they were among the smallest in standard-gauge service in the US at the time.


Class 2197 (Locobase 7041)

Data from the IC 1911 Locomotive Data and 1913ca Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange.

Another in a series of small American designs that wound up on the IC. Locobase doesn't know the provenance of this particular loner, but figures it explored branch lines in some of the remoter areas of the IC system.


Class 4 (Locobase 11195)

Data from "Old Time Illinois Central Engine," Railway and Locomotive Engineering, Vol 23, No 4 (April 1910), p 140. Boiler pressure is an estimate.

A wodd-burner credited to Superintendent of Machinery Samuel J Hayes, this locomotive had a noticeably large firebox heating surface for the time. Hayes had designed many of the B & O's most successful early locomotives and this effort also yielded a solid layout that was copied many times over.

The illustration in the article is credited to Matthias N Forney, then a draftsman for the IC.


Class 542/948/1948 (Locobase 7034)

Data from the IC 1911 Locomotive Data and 1913ca Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. Works numbers were 2242-2243, 2245 in December 1892, 2246-2247 in January 1893.

The last new locomotives purchased by the NN&MV were these Eight-wheelers, which presented a greater than usual amount of direct heating surface. Because the firebox still stood between the driving axle and its length and width were no greater than usual, this meant an exceptionally deep firebox.

When the IC took over the NN&MV, they assigned this set to the Yazoo & Mississippi Valley as their 948-952.


Class 6 (Locobase 13881)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 40, p. 4. Works number was 37230 in December 1911.

A light American, this engine served the Dyerburg-Hickman line in both the CM & G number (6) and successor Illinois Central's 2107. It was scrapped sometime between 1924 and 1928.


Class 961 (Locobase 2156)

Data from Catalogue Descriptive of Simple and Compound Locomotives built by Brooks Locomotive Works, Dunkirk, NY (Buffalo, NY: Matthew-Northrup Company, 1899) and IC 1911 Locomotive Data book supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange . See also P J Conlon, "Locomotive Lore - Chapter XIV", Machinists Monthly Journal, Volume XIII, No. 10 (October 1901), p. 746. Builder info from B.Rumary, 25 Kingscombe, Gurney Slade, Radstock, BA3 4TH, ENGLAND and Jeremy Lambert as supplied by Allen Stanley in March 2004. Works numbers were 2716-2723 in November 1896.

The design of this class was credited to IC's Superintendent of Machinery W Renshaw. The boiler was an improved Belpaire type with a firebox credited with 152.2 sq ft of heating surface area that together with the tube area offered a total evaporative heating surface of 1,802 sq ft. Between its delivery and the preparation of the 1911 description listing, the IC added arch tubes (Locobase supposes), which increased direct heating surface area by 25%. The resulting figures are shown in the specifications.

P J Conlon looked at the locomotive in 1901 and didn't like what he saw, apparently because of the resulting "decided foreign appearance." He observed: "The sand box and air pump are located under the boiler, with the main object of clearing the top of the boiler of all parts that could be placed elsewhere without detriment and also for the sake of cleanliness and neatness of appearance. Another novel feature is a brass number plate on the side of the boiler."

Conlon approved of the "unusually large" cab, which he credited with "...affording most comfortable quarters for the engineer and fireman."

As part of Locobase's effort to preserve a sampling of the identities of component suppliers to the major builders in various periods, the equipment supplied included:

National hollow brake beams

Gollmar bell-ringer

Cicero bronze bearings

Smith exhaust nozzle

Monitor injectors

United States metallic packing

Ashton safety valves

Dean sander

French springs

Paige spoke engine truck wheel

American balanced valves with Allen parts

The class was scrapped in 1922-1924.


Class E3 (Locobase 7957)

Data from CNO&TP 1893 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange.

There were almost certainly at least three in the class as 317's works number was 2503 and 320's was 2505. These low-drivered Eight-wheelers were used in mixed passenger-freight operations.

The VS & P was later merged into the Cincinnati, New Orleans & Texas Pacific.


Class F5 (Locobase 7951)

Data from CNO&TP 1893 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange.

Some of the small number of locomotives produced by this Massachusetts builder, this class came in two driver sizes. The first four had the 62" wheels as shown, the last two had 56" drivers.The VS & P was later merged into the Cincinnati, New Orleans & Texas Pacific.

Principal Dimensions by Steve Llanso of Sweat House Media
Class101901190519121930
Locobase ID7035 7028 7029 7031 7032
RailroadOhio Valley (IC)Illinois Central (IC)Illinois Central (IC)Illinois Central (IC)Illinois Central (IC)
CountryUSAUSAUSAUSAUSA
Whyte4-4-04-4-04-4-04-4-04-4-0
Number in Class246193
Road Numbers10-11/1953-954/1953-1954/4953-49541901-19041905-19111912-19291930-1932
GaugeStdStdStdStdStd
Number Built246193
BuilderBurnham, Parry, Williams & CoICBrooksBrooksRogers
Year18891888189018911892
Valve GearStephensonStephensonStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 8.75 / 2.67 8.50 / 2.59 8.50 / 2.59 8.50 / 2.59 9.08 / 2.77
Engine Wheelbase (ft / m)22.83 / 6.9622.98 / 722.67 / 6.9122.67 / 6.9123.42 / 7.14
Ratio of driving wheelbase to overall engine wheebase 0.38 0.37 0.37 0.37 0.39
Overall Wheelbase (engine & tender) (ft / m)45.43 / 13.8545.96 / 14.0147.42 / 14.4547.42 / 14.4546.62 / 14.21
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)58,000 / 26,30862,100 / 28,16882,400 / 37,37683,900 / 38,05668,200 / 30,935
Engine Weight (lbs / kg)90,000 / 40,82396,100 / 43,590119,700 / 54,295119,400 / 54,159110,200 / 49,986
Tender Loaded Weight (lbs / kg)63,000 / 28,57680,000 / 36,28780,000 / 36,28780,000 / 36,28780,000 / 36,287
Total Engine and Tender Weight (lbs / kg)153,000 / 69,399176,100 / 79,877199,700 / 90,582199,400 / 90,446190,200 / 86,273
Tender Water Capacity (gals / ML)3500 / 13.263850 / 14.583850 / 14.583850 / 14.583850 / 14.58
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)6 / 5.50 7.50 / 6.80 7.50 / 6.80 7.50 / 6.80 7.50 / 6.80
Minimum weight of rail (calculated) (lb/yd / kg/m)48 / 2452 / 2669 / 34.5070 / 3557 / 28.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)64.75 / 164669 / 175375 / 190564.75 / 164669 / 1753
Boiler Pressure (psi / kPa)165 / 11.40150 / 10.30175 / 12.10165 / 11.40165 / 11.40
High Pressure Cylinders (dia x stroke) (in / mm)18" x 24" / 457x61018" x 24" / 457x61018" x 24" / 457x61018" x 24" / 457x61018" x 24" / 457x610
Tractive Effort (lbs / kg)16,843 / 7639.8714,369 / 6517.6815,422 / 6995.3116,843 / 7639.8715,806 / 7169.49
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.44 4.32 5.34 4.98 4.31
Heating Ability
Firebox Area (sq ft / m2)136 / 12.64123.50 / 11.48136 / 12.64136 / 12.64147.50 / 13.71
Grate Area (sq ft / m2)17.50 / 1.6317.20 / 1.6029 / 2.7029 / 2.7017.40 / 1.62
Evaporative Heating Surface (sq ft / m2)1610 / 149.631366 / 126.951525 / 141.731525 / 141.731559 / 144.89
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1610 / 149.631366 / 126.951525 / 141.731525 / 141.731559 / 144.89
Evaporative Heating Surface/Cylinder Volume227.77193.25215.74215.74220.55
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation28882580507547852871
Same as above plus superheater percentage28882580507547852871
Same as above but substitute firebox area for grate area22,44018,52523,80022,44024,338
Power L157694840682455556165
Power MT438.57343.65365.15291.93398.58

Principal Dimensions by Steve Llanso of Sweat House Media
Class193319402, 4-5, 5-7/219621572169
Locobase ID7033 7030 7042 7037 7038
RailroadIllinois Central (IC)Illinois Central (IC)Ohio Valley (IC)Illinois Central (IC)Illinois Central (IC)
CountryUSAUSAUSAUSAUSA
Whyte4-4-04-4-04-4-04-4-04-4-0
Number in Class78627
Road Numbers1933-19391940-19471196, 1198-1201 / 2196, 2198-22002157-21582169-2176
GaugeStdStdStdStdStd
Number Built78627
BuilderRogersBrooksBurnham, Parry, Williams & CoRogersIC
Year18931894188518841885
Valve GearStephensonStephensonStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 9.08 / 2.77 9.25 / 2.82 8.25 / 2.51 8.25 / 2.51 8.50 / 2.59
Engine Wheelbase (ft / m)23.42 / 7.1423.58 / 7.1922.17 / 6.7622.38 / 6.8222.42 / 6.83
Ratio of driving wheelbase to overall engine wheebase 0.39 0.39 0.37 0.37 0.38
Overall Wheelbase (engine & tender) (ft / m)46.62 / 14.2146.79 / 14.2645.24 / 13.79
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)77,000 / 34,92777,000 / 34,92749,300 / 22,36248,800 / 22,13553,100 / 24,086
Engine Weight (lbs / kg)118,800 / 53,887118,800 / 53,88778,600 / 35,65277,300 / 35,06383,400 / 37,830
Tender Loaded Weight (lbs / kg)80,000 / 36,28780,000 / 36,28763,000 / 28,57680,000 / 36,28780,000 / 36,287
Total Engine and Tender Weight (lbs / kg)198,800 / 90,174198,800 / 90,174141,600 / 64,228157,300 / 71,350163,400 / 74,117
Tender Water Capacity (gals / ML)3850 / 14.583850 / 14.583500 / 13.263850 / 14.583850 / 14.58
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT) 7.50 / 6.80 7.50 / 6.806 / 5.50 7.50 / 6.80 7.50 / 6.80
Minimum weight of rail (calculated) (lb/yd / kg/m)64 / 3264 / 3241 / 20.5041 / 20.5044 / 22
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)69 / 175369 / 175363 / 160058.50 / 148664.75 / 1646
Boiler Pressure (psi / kPa)165 / 11.40165 / 11.40140 / 9.70140 / 9.70140 / 9.70
High Pressure Cylinders (dia x stroke) (in / mm)18" x 24" / 457x61018" x 24" / 457x61017" x 24" / 432x61017" x 24" / 432x61017" x 24" / 432x610
Tractive Effort (lbs / kg)15,806 / 7169.4915,806 / 7169.4913,101 / 5942.5214,109 / 6399.7412,747 / 5781.95
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.87 4.87 3.76 3.46 4.17
Heating Ability
Firebox Area (sq ft / m2)137.99 / 12.82163.26 / 15.17121 / 11.25102.98 / 9.57106 / 9.85
Grate Area (sq ft / m2)17.40 / 1.6217.86 / 1.6616.50 / 1.5315.80 / 1.4717.05 / 1.58
Evaporative Heating Surface (sq ft / m2)1446 / 134.391529 / 142.101195 / 111.061258 / 116.911126 / 104.65
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1446 / 134.391529 / 142.101195 / 111.061258 / 116.911126 / 104.65
Evaporative Heating Surface/Cylinder Volume204.57216.31189.53199.52178.59
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation28712947231022122387
Same as above plus superheater percentage28712947231022122387
Same as above but substitute firebox area for grate area22,76826,93816,94014,41714,840
Power L157346296419738383968
Power MT328.35360.53375.37346.78329.49

Principal Dimensions by Steve Llanso of Sweat House Media
Class21802184219021974
Locobase ID7039 7040 7043 7041 11,195
RailroadIllinois Central (IC)Illinois Central (IC)Illinois Central (IC)Illinois Central (IC)Illinois Central (IC)
CountryUSAUSAUSAUSAUSA
Whyte4-4-04-4-04-4-04-4-04-4-0
Number in Class26411
Road Numbers2180-21812184-21892190-219321974
GaugeStdStdStdStdStd
Number Built26411
BuilderPittsburghSchenectadySchenectadyPittsburghIC
Year18881881188418861863
Valve GearStephensonStephensonStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 8.67 / 2.64 8.50 / 2.59 8.50 / 2.59 8.33 / 2.54
Engine Wheelbase (ft / m)22.75 / 6.9322.67 / 6.9122.92 / 6.9922.37 / 6.82
Ratio of driving wheelbase to overall engine wheebase 0.38 0.37 0.37 0.37
Overall Wheelbase (engine & tender) (ft / m)44.99 / 13.71
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)61,200 / 27,76045,600 / 20,68450,500 / 22,90651,000 / 23,13336,500 / 16,556
Engine Weight (lbs / kg)88,600 / 40,18871,000 / 32,20578,250 / 35,49482,000 / 37,19560,000 / 27,216
Tender Loaded Weight (lbs / kg)73,700 / 33,43063,000 / 28,57663,000 / 28,57663,000 / 28,576
Total Engine and Tender Weight (lbs / kg)162,300 / 73,618134,000 / 60,781141,250 / 64,070145,000 / 65,771
Tender Water Capacity (gals / ML)3000 / 11.363500 / 13.263500 / 13.263500 / 13.26
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT) 7.50 / 6.806 / 5.506 / 5.506 / 5.50
Minimum weight of rail (calculated) (lb/yd / kg/m)51 / 25.5038 / 1942 / 2143 / 21.5030 / 15
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)64 / 162663 / 160063 / 160063 / 160062.25 / 1582
Boiler Pressure (psi / kPa)160 / 11150 / 10.30140 / 9.70140 / 9.70130 / 9
High Pressure Cylinders (dia x stroke) (in / mm)17" x 24" / 432x61017" x 24" / 432x61017" x 24" / 432x61017" x 24" / 432x61016" x 24" / 406x610
Tractive Effort (lbs / kg)14,739 / 6685.5114,037 / 6367.0813,101 / 5942.5213,101 / 5942.5210,906 / 4946.88
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.15 3.25 3.85 3.89 3.35
Heating Ability
Firebox Area (sq ft / m2)125 / 11.6299 / 9.20119 / 11.06107 / 9.94153 / 14.22
Grate Area (sq ft / m2)17.25 / 1.6017.25 / 1.6017.30 / 1.6116 / 1.4914.30 / 1.33
Evaporative Heating Surface (sq ft / m2)1177 / 109.391048 / 97.401250 / 116.171042 / 96.841191 / 110.69
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1177 / 109.391048 / 97.401250 / 116.171042 / 96.841191 / 110.69
Evaporative Heating Surface/Cylinder Volume186.68166.22198.26165.27213.25
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation27602588242222401859
Same as above plus superheater percentage27602588242222401859
Same as above but substitute firebox area for grate area20,00014,85016,66014,98019,890
Power L148783854430236774724
Power MT351.44372.66375.61317.90570.66

Principal Dimensions by Steve Llanso of Sweat House Media
Class542/948/19486961E3F5
Locobase ID7034 13,881 2156 7957 7951
RailroadNewport News & Mississippi Valley (IC)Chicago, Memphis & Gulf (IC)Illinois Central (IC)Vicksburg, Shreveport & Pacific (IC)Vicksburg, Shreveport & Pacific (IC)
CountryUSAUSAUSAUSAUSA
Whyte4-4-04-4-04-4-04-4-04-4-0
Number in Class51937
Road Numbers541-545//1948-1952/4949-49526 / 2107961-969 / 1961-69 / 4961+317, 320310-312, 319, 321-322
GaugeStdStdStdStdStd
Number Built51937
BuilderCookeBaldwinBrooksRogersTaunton
Year18931911189618781870
Valve GearStephensonStephensonStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 9.08 / 2.778 / 2.44 8.75 / 2.67 6.17 / 1.88 7.50 / 2.29
Engine Wheelbase (ft / m)23.42 / 7.1421.75 / 6.6323.59 / 7.1921.58 / 6.5822.25 / 6.78
Ratio of driving wheelbase to overall engine wheebase 0.39 0.37 0.37 0.29 0.34
Overall Wheelbase (engine & tender) (ft / m)46.62 / 14.2144.04 / 13.4250.50 / 15.3944.46 / 13.5544.67 / 13.62
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)66,000 / 29,93752,000 / 23,58780,000 / 36,28742,500 / 19,27830,500 / 13,835
Engine Weight (lbs / kg)103,000 / 46,72080,000 / 36,287120,000 / 54,43168,000 / 30,84464,000 / 29,030
Tender Loaded Weight (lbs / kg)80,000 / 36,28750,500 / 22,90690,000 / 40,823
Total Engine and Tender Weight (lbs / kg)183,000 / 83,007130,500 / 59,193210,000 / 95,254
Tender Water Capacity (gals / ML)3850 / 14.582500 / 9.474200 / 15.912600 / 9.852400 / 9.09
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT) 7.50 / 6.805 / 4.50 8.50 / 7.70
Minimum weight of rail (calculated) (lb/yd / kg/m)55 / 27.5043 / 21.5067 / 33.5035 / 17.5025 / 12.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)63 / 160062 / 157575 / 190552 / 132162 / 1575
Boiler Pressure (psi / kPa)165 / 11.40160 / 11200 / 13.80140 / 9.70140 / 9.70
High Pressure Cylinders (dia x stroke) (in / mm)18" x 24" / 457x61015" x 24" / 381x61018" x 26" / 457x66017" x 24" / 432x61016" x 24" / 406x610
Tractive Effort (lbs / kg)17,311 / 7852.1511,845 / 5372.8119,094 / 8660.9015,873 / 7199.8811,793 / 5349.22
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.81 4.39 4.19 2.68 2.59
Heating Ability
Firebox Area (sq ft / m2)157 / 14.59103 / 9.57192 / 17.8475 / 6.97
Grate Area (sq ft / m2)18.40 / 1.7115.50 / 1.4427.20 / 2.5314 / 1.30
Evaporative Heating Surface (sq ft / m2)1369 / 127.23996 / 92.531841 / 171.03864 / 80.30
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1369 / 127.23996 / 92.531841 / 171.03864 / 80.30
Evaporative Heating Surface/Cylinder Volume193.67202.90240.41154.70
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation3036248054401960
Same as above plus superheater percentage3036248054401960
Same as above but substitute firebox area for grate area25,90516,48038,40010,500
Power L15279508991443209
Power MT352.67431.51503.98463.91

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