LN: Anniston & Cincinnati / Kentucky Central / Kentucky Union / Lexington & Eastern / Louisiana & NorthWest / Louisville & Nashville / Louisville, Henderson & St Louis / Marietta & North Georgia / Richmond, Nicholasville, Irvine & Beattyville 4-6-0 "Ten-Wheeler" Locomotives in the USA


Class Details by Steve Llanso of Sweat House Media

Class 14/G-18 (Locobase 9806)

Data from L&N 8 1927 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. See also DeGolyer, Volume 14, p. 168. Baldwin works numbers 9959-9960 in April 1889; 10664 in February 1890; and 11272, 11276 in October 1890.

A typical mid-sized Ten-wheeler design from Baldwin in the late 1880s. The cylinder volume and boiler evaporative surface area overmatched the small firebox.

In 1896, the M&NG was absorbed by the Atlanta, Knoxville & Northern, which in turn was succeeded by the Louisville & Nashville in 1905.

All but the first of the class were scrapped by the L&N in 1925 (362, 364) and 1929 (361, 363). The 360 was sold to the Frankfort & Cincinnati as their #7.


Class 14/G-5 (Locobase 9801)

Data from L&N 8 1927 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. Works numbers were 2671-2673 in July 1888 and 3045-3047 in February 1890.

A typical Ten-wheeler design of the late 1880s, this freight-engine sextet used the usual long, narrow firebox that lay between the second and third driving axles. As a result, the wheelbase between those two was 3' 2" in (0.97 m) greater than the closely spaced 5' 4" (1.626 m) wheelbase between the first and second. A combination of a relatively high heating surface to grate area ratio and small drivers might have limited steam capacity, but the relatively high ratio of the direct heating surface may have compensated for the small grate.

The L&N sold the 336 to Horse Shoe Limber Company in 1918 as their #9. The other five were scrapped in the mid-'teens to mid-twenties.


Class 2 (Locobase 11571)

Data from Baldwin Locomotive Works Specification for Engines, 1888, as digitized by the DeGolyer Library of Southern Methodist University Volume 15, p. 9. Works numbers were 9799 and 9804 in February 1889.

For all the grandly scaled ambitions revealed in its name, the A&C simply connected Anniston, Alabama with nearby Attalla, Ala, 34.33 miles away in 1889. The all-steel rail weighed 56 lb/yard (26 kg/metre). These two standard-gauge Ten-wheelers were on the property in 1890 when the Louisville & Nashville bought the A&C, combined it with the then-narrow-gauge Anniston & Atlantic to create the Alabama Mineral Road.

In 1891, the L&N took full control of the AMR and renumbered these two engines as 405-406. After a further renumbering, the L&N converted the pair to Eight-wheeled 4-4-0s; see Locobase


Class 22 (Locobase 13886)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 40, p. 119 and Volume 43, p. 118. Works numbers were 37003-37005 in September 1911 and 39266 in February 1913.

A quartet of Ten-wheelers with extended smokeboxes trailing cylindrical tenders. Locobase found a couple of references in 1911 orders to a need to strengthen the back equalizing beam both by crafting it of wrot [sic] iron and redesigning the beams between the drivers "...and made strong enough to carry the loads." Could Baldwin have briefly tried to use another material (i.e., steel) and slimmed down the profile to lighten it? If so, the change proved unsuccessful and Baldwin would have to find other ways to meet the emphatic stricture to keep the weight limited to 100,000 lb on the drivers.

At some point, the four engines were converted to oil burning.

25 was delivered with a 190-psi boiler setting. It was sold in April 1924 to Hodge Hunt Lumber Company of Hodge, La. 24 was sold to Ansley, Louisiana's Davis Brothers Lumber.


Class 3 / G-0 (Locobase 12022)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 17, p. 238. Works numbers were 12514 in March 1892 and 13623 in August 1893. (Thanks to Eric Zabilka for his April 2013 email correcting the railroad's name and providing information on the 4's tender.)

This railroad operated in eastern Kentucky. Known as the Riney-B and the Three Forks Railroad, it entered receivership even before it was completed. Rescued by the Louisville & Atlantic, the RNI&B was then completed to Beatty.

#4 was delivered with a 3,200 US gallon (12,112 litre) tender. It was sold to the Finkbine Lumber Company in 1907. In 1909, the Louisville & Nashville bought out the L&A. 3 remained with the railway until it was scrapped in 1924.


Class 9/G-19 (Locobase 9807)

Data from L&N 8 1927 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. Baldwin works number 12726 in June 1892.

This engine was originally delivered as a four-cylinder, two-valve

Vauclain compound; see Locobase 16169.

The 365 continued in service for well over a decade until it was scrapped in 1933.


Class 9/G-19 (Locobase 16169)

Data from L&N 8 1927 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. See also Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 18, p. 30 . Baldwin works number 12726 in June 1892.

This engine was originally delivered to the KU as a Vauclain compound. Like all Vauclain compounds, the HP and LP cylinders on each side of the boiler were cast as a single unit together with a piston valve that supplied both with steam. This relatively early example had a modest cylinder volume, but 10 1/2 (279 mm) diameter piston valves.

In 1894, the KU was absorbed by the Lexington & Eastern. Sometime later, the engine was simpled; see Locobase 9807.


Class G-0 (Locobase 9799)

Data from L&N 8 1927 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. Works number was 2088 in July 1890.

The Paterson, NJ builder that supplied this lone engine only ever delivered twelve locomotives to the L&N and only two rolled on 57" drivers.

After almost 30 years of service, the 340 went to the scrapper in 1926.


Class G-10 (Locobase 9808)

Data from L&N 8 1927 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. See also "Rogers Locomotives at Atlanta", Railroad Gazette, Volume 27 (22 November 1895) , p. 766-767. Works numbers were 5051, 5055, 5058 in September 1895; 5059, 5067 in October.

37 (later 250, then 300) went on display at the 1895 Cotton States Exposition in Atlanta, Georgia. RG's table of data showed a driver diameter of 69" (1,753 mm), 170 psi (11.7 bar), 19 1/2" (495 mm) cylinder diameters, 182.5 sq ft (16.95 sq m) firebox heating surface area. Steam admission came through the rarely used Margach balanced slide valves.

Its tender carried 4,200 US gallons (17,786 litres) of water and 7 tons (6.35 metric tons) of coal and rolled on diamond trucks. The cab sported a prominent clerestory top.

By 1913, the class's specifications had changed to those shown in Locobase's data.

The L&N withdrew all five in 1933-1934.


Class G-11 (Locobase 8134)

Data from L&N 8-1927 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. Works numbers wree 3286-3290 in August 1901.

Although it was delivered a full decade after the G8 shown in Locobase 1098, this class had many of the same characteristics. In both, the Belpaire firebox is not readily apparent in illustrations because so much of it is contained within the cab. Other than a 2" (51 mm) increase in piston stroke and the inevitable increase in weight, the two classes were essentially identical. 308-309 dropped off the roster September 1937, 305 left in August 1940.


Class G-12 (Locobase 8136)

Data from L&N 8-1927 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. Cooke works numbers 2317-2320.

The numbering and class ID puts it right after G-11 (Locobase 8135) yet the design is quite different. The boiler is an extended wagon top with substantially less firebox heating surface area, the driver diameter measures 3" (76.2 mm) less, it weighs less, and trails a smaller tender.


Class G-13 (Locobase 8135)

Data from L&N 8-1927 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. See also DeGolyer, Volume 26, pp. 60+. Works numbers were 23316, 23325-23326, 23340, 23355-23356, 23379-23380, 23421 in December 1903; 23475, 23479 in January 1904.

Slightly larger and heavier than earlier Ten-wheelers with 20 x 26 cylinders, this mixed-traffic design also had a bigger grate, more tubes in the boiler, and higher boiler pressure. The Baldwin specs for this class are a master class in tiny, almost entirly legible writing filling the pages. The L&N specified everything. A sample note on an important component. The cylinders were to be "hard iron 65% old wh[illegible, possibly "wheels"], 35% no 1 charcoal iron, cast in dry sand moulds [sic]." Why so precise? Well, the railroad complained of "rapid wear of cylinders of previous engines."

In addition, 2 arch tubes added 13 sq ft (1.21 sq m) to the firebox heating surface. G-13A #318 was fitted with Walschaert radial valve gear.

The G-13s were the last Ten-wheelers bought by the L&N and must have suited the railroad. The ten engines in the class were scrapped over a stretch of 14 years from 1934 to 1948.


Class G-2 (Locobase 8141)

Data from L&N 8 1927 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange.

According to a compilation of Cooke locomotives by B.Rumary 25 Kingscombe, Gurney Slade, Radstock, BA3 4TH, ENGLAND) and supplied to Locobase by Allen Stanley in March 2004, works numbers for 366-385 were 2166-2185 and delivered from July to October 1892. (The Rumary-Lambert list identifies these as 2-8-0s, but no L & N numbering matches this range other than the 4-6-0s described).

These were relatively small Ten-wheelers even for the early 1890s. The shallow firebox's heating surface didn't even amount to 5% of the total. By 1927, only 367 still appeared on the L & N's active-duty roster.


Class G-23 (Locobase 9810)

Data from L&N 8 -- 1927 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. See also DeGolyer, Volumes 35, pp. 219; 41, pp. 202+; and 43, pp. 99+.

Baldwin works numbers included 35292-35293 in September 1910, 36437 in April 1911, 38456-38457, 38605 in October 1912; 38925-38927 in December.

Baldwin's note on the first two engines in the class specified that the boiler was to be "Full extension wagon top, that is, first sheet back of the smokebox to be the sloping sheet instead of second sheet." Although its appearance did not include sleek lines, extending the full depth of the boiler increased steaming capacity. Possibly to counter the increased weight above the running board, the boiler was to be set low by sloping the frame's top rails.

A careful reading of the by-now exquisitely detailed specs turns up complaints that illustrate the complexity of steam engines and the difficulty in getting it right.

By the time of the last order in December 1912, the LH&StL's mechanical staff were fed up with the "continual problems" caused by the method of bracing the boiler to the frame used in 28-29. The three bolts used to hold the extension pad bracket to the frame kept "shearing off." One of the Henderson Route's mechanical department, Mr Randall, suggested a cross-bearer on the frame's top rail between the front and rear of the firebox to carry a link expansion hanger..

To remedy sagging in the frame's top rails over cylinders, the company suggested reducing the truck's wheelbase by 6" (152 mm) and shortening the frame extension in front of the cylinders by a similar amount.

The 28-29 were fitted with Richardson balanced slide valves with short eccentric blades and long valve stems. Stephenson link motion actuated the valves. The next pair--31-32-- arrived with 12" (305 mm) piston valves operated through Walschaert's radial valve gear. .

The earliest of this class of Ten-wheelers didn't go into the L & N, but was sold to the Alabama, Tennessee & Northern instead. 29 was taken into the L & N, as were the 31-33, which served the L & N until March 1951, June 1947, and May 1951, respectively. For some reason, the last three of the class were scrapped before the LH&StL was bought by the Louisville & Nashville.


Class G-6 - rebuilt (Locobase 9802)

Data from L&N 8 1927 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. Baldwin works number 15271.

After nearly 30 years of service the single G-6, by now renumbered three times (200, 290, 390) was substantially rebuilt with larger cylinders and a bigger boiler and firebox. In its much more powerful configuration, 390 ran until 1937.


Class G-6/500 (Locobase 9940)

Data from "Baldwin Locomotives at Nashville Exposition," Locomotive Engineering, Vol. X, No 7 (July 1897), page 158. See also DeGolyer, Volume 21, p. 62. Works number was 15271 in April 1897,

The locomotive was produced by Baldwin for display at the 1897 Tennessee Centennial and International Exposition. Perhaps toward that end, the engine was specified "to work satisfactorily on a trial of 1,000 miles [1,610 km] on a freight train."

Special equipment (i.e., components supplied from outside sources):

Westinghouse air brake

Westinghouse air signal

Standard Steel Works driving-wheel tires;

Standard Steel Works wrought-iron spoke-center wheels

Monitor injectors

Coale muffled safety valves

Keasbey & Mattison magnesia sectional boiler lagging

Leach's pneumatic sand blast

Nathan automatic sight feed lubricator, and

United States metallic packing.

It was substantially rebuilt in 1924; see Locobase 9802.


Class G-7 (Locobase 9803)

Data from L&N 8 1927 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. Works numbers in 2881-2884 in 1899

Of modest size and power, this quartet of Ten-wheelers each served into the 1930s. 392 was retired in July 1932, 393 in September 1933, and 391 and 394 in the end of March 1937.


Class G-8 (Locobase 1098)

Data from L&N 1931ca Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. Works numbers were 4415-4419 in November 1890.

Typical turn-of-the-century 4-6-0, this one with a tapered boiler. Nock (RWC II, pl 83) points out that the Belpaired firebox is not readily apparent in illustrations because so much of it is contained within the cab.

377 went on the retired list in April 1926. Three years later went 376 in March 1929 followed by 378 four months later. The last two held on into the 1930s before joining their classmates in December 1933 (379) and March 1934 (375).


Class G-9 (Locobase 9805)

Data from L&N 8 1927 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. Works numbers were 2186 in October 1893, 2187-2190 in November.

Originally delivered with 60" (1,524 mm) drivers for freight service, this quintet had been set on 67" drivers by the 1913 Engine Summary.

More than 40 years after their introduction, the class was retired in 1933.

Principal Dimensions by Steve Llanso of Middle Run Media
Class14/G-1814/G-52223 / G-0
Locobase ID9806 9801 11571 13886 12022
RailroadMarietta & North Georgia (L&N)Kentucky Central (L&N)Anniston & Cincinnati (L&N)Louisiana & NorthWestRichmond, Nicholasville, Irvine & Beattyville (L&N)
CountryUSAUSAUSAUSAUSA
Whyte4-6-04-6-04-6-04-6-04-6-0
Number in Class56242
Road Numbers14-18/360-36414-19/336, 334-335, 339, 337-3382, 4 / 405-406 / 332-33322-2561-62 /550-551
GaugeStdStdStdStdStd
Number Built56242
BuilderBurnham, Williams & CoSchenectadyBurnham, Parry, Williams & CoBaldwinBurnham, Williams & Co
Year18891888188919111892
Valve GearStephensonStephensonStephensonWalschaertStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)13.50 / 4.1113.83 / 4.1113.50 / 4.1114 / 4.2713.83 / 4.22
Engine Wheelbase (ft / m)23.50 / 7.1624.17 / 7.3723.65 / 7.2124.33 / 7.4224.06 / 7.33
Ratio of driving wheelbase to overall engine wheelbase 0.57 0.57 0.57 0.58 0.57
Overall Wheelbase (engine & tender) (ft / m)46.75 / 14.2548.58 / 14.8152.96 / 16.14
Axle Loading (Maximum Weight per Axle) (lbs / kg)24,200 / 10,97727,400 / 12,428
Weight on Drivers (lbs / kg)69,200 / 31,38976,200 / 34,56467,000 / 30,39197,000 / 43,99972,000 / 32,659
Engine Weight (lbs / kg)98,000 / 44,452107,000 / 48,53492,000 / 41,731130,500 / 59,19496,000 / 43,545
Tender Loaded Weight (lbs / kg)72,000 / 32,65975,100 / 34,065100,000 / 45,359
Total Engine and Tender Weight (lbs / kg)170,000 / 77,111182,100 / 82,599230,500 / 104,553
Tender Water Capacity (gals / ML)3000 / 11.363200 / 12.123000 / 11.365000 / 18.943000 / 11.36
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)7 / 67 / 610 / 9
Minimum weight of rail (calculated) (lb/yd / kg/m)38 / 1942 / 2137 / 18.5054 / 2740 / 20
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)55 / 139755 / 139754 / 137256 / 142256 / 1422
Boiler Pressure (psi / kPa)140 / 970150 / 1030130 / 900180 / 1240140 / 970
High Pressure Cylinders (dia x stroke) (in / mm)19" x 24" / 483x61018" x 24" / 457x61018" x 24" / 457x61018" x 26" / 457x66019" x 24" / 483x610
Tractive Effort (lbs / kg)18,746 / 8503.0518,026 / 8176.4715,912 / 7217.5723,016 / 10439.8918,411 / 8351.10
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.69 4.23 4.21 4.21 3.91
Heating Ability
Tubes (number - dia) (in / mm)192 - 2.25" / 57204 - 2" / 51177 - 2.25" / 57244 - 2" / 51211 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)12.25 / 3.7312.50 / 3.8112.22 / 3.7214.08 / 4.2912.19 / 3.72
Firebox Area (sq ft / m2)126 / 11.71143 / 13.29125.40 / 11.65149 / 13.84128.10 / 11.91
Grate Area (sq ft / m2)16.50 / 1.5317 / 1.5816.75 / 1.5631.70 / 2.9517.10 / 1.59
Evaporative Heating Surface (sq ft / m2)1502 / 139.591478 / 137.361391 / 129.281937 / 179.951464 / 136.06
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1502 / 139.591478 / 137.361391 / 129.281937 / 179.951464 / 136.06
Evaporative Heating Surface/Cylinder Volume190.61209.05196.75252.87185.79
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation23102550217857062394
Same as above plus superheater percentage23102550217857062394
Same as above but substitute firebox area for grate area17,64021,45016,30226,82017,934
Power L134724265334058823490
Power MT331.84370.19329.71401.06320.59

Principal Dimensions by Steve Llanso of Middle Run Media
Class9/G-199/G-19G-0G-10G-11
Locobase ID9807 16169 9799 9808 8134
RailroadLexington & Eastern (L&N)Kentucky Union (L&N)Louisville & Nashville (L&N)Louisville & Nashville (L&N)Louisville & Nashville (L&N)
CountryUSAUSAUSAUSAUSA
Whyte4-6-04-6-04-6-04-6-04-6-0
Number in Class11155
Road Numbers9/3659/36576/34037, 43, 53-54, 58/ 250-254/300-304255-259/305-309
GaugeStdStdStdStdStd
Number Built1155
BuilderShopsBurnham, Williams & CoCookeRogersRhode Island
Year1892189018951901
Valve GearStephensonStephensonStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)11.50 / 3.5111.50 / 3.5113.67 / 4.1713.25 / 4.0413.25 / 4.04
Engine Wheelbase (ft / m)22.19 / 6.7622.33 / 6.8123.92 / 7.2924.29 / 7.4024.42 / 7.44
Ratio of driving wheelbase to overall engine wheelbase 0.52 0.52 0.57 0.55 0.54
Overall Wheelbase (engine & tender) (ft / m)49.42 / 15.0648.12 / 14.675 / 15.6151.21 / 15.61
Axle Loading (Maximum Weight per Axle) (lbs / kg)36,000 / 16,32931,600 / 14,33441,300 / 18,73341,000 / 18,597
Weight on Drivers (lbs / kg)110,500 / 50,12290,000 / 40,82383,000 / 37,648117,800 / 53,433118,000 / 53,524
Engine Weight (lbs / kg)123,000 / 55,792116,800 / 52,980109,800 / 49,805151,000 / 68,493154,000 / 69,853
Tender Loaded Weight (lbs / kg)110,500 / 50,12282,500 / 37,421113,000 / 51,256113,000 / 51,256
Total Engine and Tender Weight (lbs / kg)233,500 / 105,914192,300 / 87,226264,000 / 119,749267,000 / 121,109
Tender Water Capacity (gals / ML)3000 / 11.363000 / 11.363900 / 14.775000 / 18.945000 / 18.94
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)7 / 67 / 67 / 610 / 910 / 9
Minimum weight of rail (calculated) (lb/yd / kg/m)61 / 30.5050 / 2546 / 2365 / 32.5066 / 33
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)60 / 152460 / 152457 / 144867 / 170267 / 1702
Boiler Pressure (psi / kPa)180 / 1240180 / 1240150 / 1030175 / 1210175 / 1210
High Pressure Cylinders (dia x stroke) (in / mm)19" x 24" / 483x61013" x 24" / 330x61018" x 24" / 457x61020" x 26" / 508x66020" x 26" / 508x660
Low Pressure Cylinders (dia x stroke) (in / mm)22" x 24" / 559x610
Tractive Effort (lbs / kg)22,093 / 10021.2315,332 / 6954.4917,394 / 7889.8023,090 / 10473.4623,090 / 10473.46
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.00 5.87 4.77 5.10 5.11
Heating Ability
Tubes (number - dia) (in / mm)256 - 2" / 51256 - 2" / 51187 - 2" / 51264 - 2" / 51264 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)13.25 / 4.0413.25 / 4.0412.37 / 3.7713.42 / 4.0913.49 / 4.11
Firebox Area (sq ft / m2)170 / 15.79170 / 15.79124 / 11.52185 / 17.19180 / 16.73
Grate Area (sq ft / m2)23.70 / 2.2023.70 / 2.2017 / 1.5828 / 2.6028 / 2.60
Evaporative Heating Surface (sq ft / m2)1934 / 179.671934 / 179.671327 / 123.332039 / 189.502033 / 188.94
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1934 / 179.671934 / 179.671327 / 123.332039 / 189.502033 / 188.94
Evaporative Heating Surface/Cylinder Volume245.43524.01187.69215.77215.13
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation42664266255049004900
Same as above plus superheater percentage42664266255049004900
Same as above but substitute firebox area for grate area30,60030,60018,60032,37531,500
Power L163594746392461296065
Power MT380.61348.77312.68344.11339.94

Principal Dimensions by Steve Llanso of Middle Run Media
ClassG-12G-13G-2G-23G-6 - rebuilt
Locobase ID8136 8135 8141 9810 9802
RailroadLouisville & Nashville (L&N)Louisville & Nashville (L&N)Louisville & Nashville (L&N)Louisville, Henderson & St Louis (L&N)Louisville & Nashville (L&N)
CountryUSAUSAUSAUSAUSA
Whyte4-6-04-6-04-6-04-6-04-6-0
Number in Class4112081
Road Numbers260-263 / 310-313266-275/314-324366-38528-29, 31-36500 / 390
GaugeStdStdStdStdStd
Number Built411208
BuilderCookeBurnham, Williams & CoCookeBaldwinL&N
Year18991903189219101924
Valve GearStephensonStephensonStephensonStephenson or WalschStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)12.17 / 3.7113.25 / 4.0413.50 / 4.1113 / 3.9613 / 3.96
Engine Wheelbase (ft / m)23.08 / 7.0324.42 / 7.4424.33 / 7.4223.92 / 7.2924.17 / 7.37
Ratio of driving wheelbase to overall engine wheelbase 0.53 0.54 0.55 0.54 0.54
Overall Wheelbase (engine & tender) (ft / m)49.84 / 15.1951.75 / 15.7748.75 / 14.8651.25 / 15.6254.71 / 16.68
Axle Loading (Maximum Weight per Axle) (lbs / kg)39,000 / 17,69045,000 / 20,41226,500 / 12,02038,000 / 17,23745,500 / 20,638
Weight on Drivers (lbs / kg)114,000 / 51,710128,000 / 58,06073,600 / 33,384104,000 / 47,174132,500 / 60,101
Engine Weight (lbs / kg)148,000 / 67,132166,000 / 75,296104,400 / 47,355142,000 / 64,410166,000 / 75,296
Tender Loaded Weight (lbs / kg)90,000 / 40,823113,000 / 51,25679,800 / 36,197107,500 / 48,761144,000 / 65,317
Total Engine and Tender Weight (lbs / kg)238,000 / 107,955279,000 / 126,552184,200 / 83,552249,500 / 113,171310,000 / 140,613
Tender Water Capacity (gals / ML)4200 / 15.915000 / 18.943700 / 14.024600 / 17.427000 / 26.52
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)8 / 710 / 97 / 611 / 1015 / 14
Minimum weight of rail (calculated) (lb/yd / kg/m)63 / 31.5071 / 35.5041 / 20.5058 / 2974 / 37
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)64 / 162667 / 170255 / 139763 / 160069 / 1753
Boiler Pressure (psi / kPa)175 / 1210190 / 1310150 / 1030185 / 1280200 / 1380
High Pressure Cylinders (dia x stroke) (in / mm)20" x 26" / 508x66020" x 26" / 508x66018" x 24" / 457x61019" x 26" / 483x66020" x 26" / 508x660
Tractive Effort (lbs / kg)24,172 / 10964.2525,069 / 11371.1218,026 / 8176.4723,428 / 10626.7725,623 / 11622.41
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.72 5.11 4.08 4.44 5.17
Heating Ability
Tubes (number - dia) (in / mm)268 - 2" / 51297 - 2" / 51158 - 2.25" / 57244 - 2" / 51288 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)12.80 / 3.9013.50 / 4.1113 / 3.9614.08 / 4.2913.79 / 4.20
Firebox Area (sq ft / m2)143 / 13.29186 / 17.2960 / 5.58149 / 13.85175 / 16.26
Grate Area (sq ft / m2)28 / 2.6033 / 3.0717 / 1.5831.80 / 2.9631.50 / 2.93
Evaporative Heating Surface (sq ft / m2)1927 / 179.092272 / 211.151269 / 117.941948 / 181.042270 / 210.97
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1927 / 179.092272 / 211.151269 / 117.941948 / 181.042270 / 210.97
Evaporative Heating Surface/Cylinder Volume203.92240.42179.49228.37240.21
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation49006270255058836300
Same as above plus superheater percentage49006270255058836300
Same as above but substitute firebox area for grate area25,02535,340900027,56535,000
Power L152197189305161337654
Power MT302.79371.46274.17390.03382.06

Principal Dimensions by Steve Llanso of Middle Run Media
ClassG-6/500G-7G-8G-9
Locobase ID9940 9803 1098 9805
RailroadLouisville & Nashville (L&N)Louisville & Nashville (L&N)Louisville & Nashville (L&N)Louisville & Nashville (L&N)
CountryUSAUSAUSAUSA
Whyte4-6-04-6-04-6-04-6-0
Number in Class1455
Road Numbers500/200/290/390201-204/291-294/391-394202, 206-207, 4, 50/275-279/375-379230-234/280-284/380-384
GaugeStdStdStdStd
Number Built1455
BuilderBurnham, Williams & CoRichmondRogersCooke
Year1897189918901892
Valve GearStephensonStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)1313 / 3.9613 / 3.9613 / 3.96
Engine Wheelbase (ft / m)24.4224.17 / 7.3723.75 / 7.2423.75 / 7.24
Ratio of driving wheelbase to overall engine wheelbase 0.53 0.54 0.55 0.55
Overall Wheelbase (engine & tender) (ft / m)49.08 / 14.9650.71 / 15.4650.92 / 15.46
Axle Loading (Maximum Weight per Axle) (lbs / kg)38,400 / 17,41837,500 / 17,01040,000 / 18,144
Weight on Drivers (lbs / kg)86,000109,200 / 49,532107,500 / 48,761113,500 / 51,483
Engine Weight (lbs / kg)133,350 / 60,487130,000 / 58,967143,500 / 65,091149,000 / 67,585
Tender Loaded Weight (lbs / kg)83,000 / 37,64890,000 / 40,823113,000 / 51,256113,000 / 51,256
Total Engine and Tender Weight (lbs / kg)216,350 / 98,135220,000 / 99,790256,500 / 116,347262,000 / 118,841
Tender Water Capacity (gals / ML)4200 / 15.915000 / 18.945000 / 18.94
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)8 / 710 / 910 / 9
Minimum weight of rail (calculated) (lb/yd / kg/m)48 / 2461 / 30.5060 / 3063 / 31.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)68 / 172764 / 162667 / 170267 / 1702
Boiler Pressure (psi / kPa)170 / 1170175 / 1210175 / 1210175 / 1210
High Pressure Cylinders (dia x stroke) (in / mm)18.5" x 26" / 470x66019" x 26" / 483x66020" x 24" / 508x61020" x 24" / 508x610
Tractive Effort (lbs / kg)18,909 / 8576.9921,815 / 9895.1321,313 / 9667.4321,313 / 9667.43
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.55 5.01 5.04 5.33
Heating Ability
Tubes (number - dia) (in / mm)206 - 2" / 51224 - 2" / 51272 - 2" / 51230 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)13.17 / 4.0113.17 / 4.0113.50 / 4.1113.58 / 4.14
Firebox Area (sq ft / m2)138 / 12.83143 / 13.29173 / 16.08168 / 15.61
Grate Area (sq ft / m2)22.50 / 2.0927 / 2.5127 / 2.5126 / 2.42
Evaporative Heating Surface (sq ft / m2)1549 / 143.961686 / 156.692095 / 194.701803 / 167.57
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1549 / 143.961686 / 156.692095 / 194.701803 / 167.57
Evaporative Heating Surface/Cylinder Volume191.47197.66239.98206.53
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation3825472547254550
Same as above plus superheater percentage3825472547254550
Same as above but substitute firebox area for grate area23,46025,02530,27529,400
Power L15332525466265916
Power MT410.06318.22407.66344.74

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