Baltimore & Ohio / Baltimore & Ohio Southwestern / Buffalo, Rochester, & Pittsburgh / Cincinnati, Hamilton & Dayton / Cincinnati, Indianapolis, & Western / Cleveland Terminal & Valley / Cleveland, Lorain, & Wheeling / Dayton & Union / Monongahela River / Morgantown & Kingwood / Ohio & Mississippi / Ohio River / Pittsburgh & Western / Valley Railway 4-6-0 "Ten-wheeler" Locomotives of the USA


Class Details by Steve Llanso of Sweat House Media

Class J (Locobase 2010)

Data from Alvin F Staufer & Lawrence W Sagle, B & O Power (1964). and from B & OSW diagram book dated July 1900 supplied in May 2005 by Allen Stanley from his extensive Raildata collection.

In 1882, the B&O had acquired control of the Marietta & Cincinatti and renamed it the Cincinatti, Washington, & Baltimore. In 1889, the name changed to Baltimore & Ohio Southwestern. Although technically an independent corporation, B&O control of its stock meant control of the railroad. In 1900, the B&OSW's stud was renumbered and reclassified as part of the parent company's roster.

These engines were built by Rhode Island (202-216 in 1892-93; B&O class B-29). They ran until the last example retired in 1924.

The figure shown for evaporative heating surface in the diagram book seems much too low, so Locobase does not include it. Instead, the evaporative heating surface area estimate was derived by adding reported direct heating surface to calculated tube heating surface


Class 305 (Locobase 1025)

Kinert, 1962 Precursor to the camelback freight locomotive, but with a narrow, long grate.


Class B / B-53 (Locobase 12723)

Data from DeGolyer, Volume 27, p. 147. Works numbers were 24796-24801, 24815-24816, 24821, 24834 in November 1904.

Three earlier locomotives were delivered by Pittsburgh. This set came from Baldwin and were likely very similar.

All of them were taken into the Baltimore & Ohio in 1917 as class B-53 and renumbered. 236 and 238 were retired in 1926 as the first of the class to go. All of the remaining except 235 retired in 1928-1929. 235 lingered until July 1933.


Class B-10 / B-12 (Locobase 1253)

Small, low-drivered ten-wheelers, all of which had left service by 1918. 1504-1505 (class B-12) were 19x26" cylinder locomotives with a tractive effort of 19,808 lb.

Sagle 1964

Builder information from B Rumary list supplied by Allen Stanley in March 2004. Works numbers were 1196-1199 (March 1891) and 1397-1398 (January 1893) (B-12). Engine 212 was sold to the Canadian Northern in 1907 as their #167.


Class B-11 (Locobase 1254)

Two -- 216, 220 -- had 50" drivers and 22,093-lb tractive effort. See Alvin F Staufer & Lawrence W Sagle, B & O Power (1964)..

EHS, grate area, and weights from tables put up by Dr. Jonathan Smith --http://www.math.iastate.edu/jdhsmith/term/slusbo.htm (July 2002)

Builder information from B Rumary list supplied by Allen Stanley in March 2004. Works numbers were 1250-1255 (March 1891). 216 retired first in 1915217 and 220 were the last to go in 1920.


Class B-13 (Locobase 1255)

EHS, grate area, and weights from tables put up by Dr. Jonathan Smith --http://www.math.iastate.edu/jdhsmith/term/slusbo.htm (July 2002)

Builder information from B Rumary list supplied by Allen Stanley in March 2004. Works numbers were1391-1392 (January 1893). 223 was retired in 1918, 222 in June 1923.


Class B-14 (Locobase 1110)

Summarized in a description of several locomotive classes recently delivered to the Baltimore & Ohio in American Engineer, Car Builder and Railroad Journal (AERJ) in 1895. See also DeGolyer, Volume 20, p. 178. Works numbers were 14982-14987 in August 1896 and 15375-15378 in June 1896.

Sagle (1964) describes these as "Mother Hubbard" or camelbacks, but the AERJ article referred to above shows a conventional layout. Baldwin's specs estimated adhesion weight at 113,000 lb (51,256 kg) and engine weight at 146,200 lb (63,315 kg). The original tender trailed by the first six engines carried 3,500 US gallons(13,248 litres) and weighed 78,000 lb (35,380 kg). 1319-1322's larger tenders held 4,000 gallons (15,140 litres).

Sagle comments: The high-wheel ten-wheelers "..were the 'glamour girls' of their type and were used on the Washington-Philadelphia run ...displacing the I-6, 4-4-0 ....Serving out their later days on such trains as the 'Frederick Local' must have been a great let down."


Class B-15 (Locobase 1256)

Summarized in a description of several locomotive classes recently delivered to the Baltimore & Ohio in American Engineer, Car Builder and Railroad Journal (AERJ) in 1895. See also DeGolyer, Volume20, p. 179. Works numbers were 14996-14999 in August 1896 and 15323 in May 1897.

See Sagle, 1964. These were slightly smaller than the B-14s with cylinders measuring 1" less in diameter. All had retired by 1934. Sagle describes these as "Mother Hubbard" or camelback with high drivers for fast passenger service, but the AERJ article referred to below shows a conventional layout. It also says the only difference between these and the B-14s was the smaller cylinder diameter.

1318 retired in 1928, 1314-1315 in 1929, and 1316-1317 in 1933.


Class B-17 / B-17a (Locobase 12479)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 23, p. 228. Works numbers were 18712-18713, 18722-18724, 18767, 18790, 18806-18807 in March 1901

High-drivered express Vauclain compounds were thought to be a good use for the four-cylinder system. But its liabilities, chiefly maintenance costs, proved more intractable than hoped and the class was converted to 20" x 28" cylinders in 1905. In that configuration, the class operated until retired in 1933-1934.


Class B-17A (Locobase 1257)

Originally built as Vauclain compounds by Baldwin with 15" HP and 25" LP cylinders; estimated TE was 21,987 lb. See Sagle, 1964;data from Baltimore & Ohio Steam and Electric Locomotive Diagrams by Alvin Staufer (self-published in 1964), supplied by Allen Stanley in May 2005 from his extensive Raildata collection.

They were quickly converted to simple expansion engines in 1905. All had retired by 1935.


Class B-18A (Locobase 1258)

Originally built as cross-compounds by Rhode Island in 1901. The 23 1/2" HP cylinder was mounted on the right side, the 35 3/4" LP cylinder on the left; estimated TE was 30,318 lb.

Like all B&O compounds, these soon were rebuilt as B-18a simple expansion engines. Sagle, 1964, notes these subclasses:

B-18b -- 4 engines (2004, 2016-2017, 2034) refitted with Baker valve gear and 70" drivers. TE became 30,000 lb.

B-18c/d -- 3 engines (c) and 12 engines (12) converted from -18a/b to use Baker or Walschaert valve gear on piston valves.

B-18e -- 9 converted B-19a.

Sagle comments: "They were first-class passenger and fast-freight engines, for use in mountain territory." The last was scrapped in 1953.

Data from Baltimore & Ohio Steam and Electric Locomotive Diagrams by Alvin Staufer (self-published in 1964), supplied by Allen Stanley in May 2005 from his extensive Raildata collection.


Class B-19a (Locobase 1259)

Originally built as Vauclain compounds by Baldwin with 15 1/2" HP and 26" LP cylinders; estimated TE was 27,105 lb. See Sagle, B & O Power (1964)., 1964. They were quickly converted to simple expansion engines in 1908. 9 B-19a were converted to B-18e in 1926 with Baker or Walschaert valve gear and piston valves.

Alvin F Staufer & Lawrence W Sagle, B & O Power (1964). says B-18/B-19 classes "served long and well ...They hauled the 'varnish' west of Cumberland, were used as helpers on the grades, and were on the head-end of express and fast-freight trains. All had retired by 1934.

EHS, grate area, and weights from tables put up by Dr. Jonathan Smith --http://www.math.iastate.edu/jdhsmith/term/slusbo.htm (July 2002)


Class B-26 (Locobase 1445)

Builder information from B Rumary list supplied by Allen Stanley in March 2004. Works numbers were 1166 (August 1890), 1350 (May 1892), 1399 (January 1893) with road numbers #3, 5, 4, respectively.

The MRRR was operated by the B&O under lease from 1900 to its purchase in 1912. All three of these engines were retired by 1916 -- 232 first in 1912 , 230 in 1915, and 231 in 1916.

( See Alvin F Staufer & Lawrence W Sagle, B & O Power (1964)..


Class B-27 (Locobase 1446)

See Alvin F Staufer & Lawrence W Sagle, B & O Power (1964)..

Builder information from B Rumary list supplied by Allen Stanley in March 2004. Works numbers were 1561 (June 1896), which became Baltimore & Ohio 234 and was retired in 1913; and 1968 (July 1899), later renumbered B&O 233 and was retired in 1916.


Class B-28 (Locobase 2000)

Alvin F Staufer & Lawrence W Sagle, B & O Power (1964). notes these Ohio River RR Class E engines were retired in 1926. The B&O ran on the OR's tracks from September 1901 and bought the line outright in 1912.

Builder information from B Rumary list supplied by Allen Stanley in March 2004. Works numbers were 2119-2120 (June 1900).


Class B-29 (Locobase 2001)

Alvin F Staufer & Lawrence W Sagle, B & O Power (1964). notes these Ohio River RR engines -- also designated Class E on the OR -- were retired in 1927. The B&O ran on the OR's tracks from September 1901 and bought the line outright in 1912.

The builders' data comes from a table compiled by B. Rumary based on information from Jeremy Lambert and supplied by Allen Stanley in March 2004. Rumary-Lambert assign works #1777-1781 (May 1901) and credit them to the West Virginia Short Line until 1903. 101 was out of service by 1904 (accident, most likely?). The others were retired in 1923 (100, 104), 1925 (102), and 1926 (103).


Class B-30 (Locobase 2002)

These Class D engines were retired in 1912.

Alvin F Staufer & Lawrence W Sagle, B & O Power (1964).

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 #1366-1369 in April 1888.

All four were renumbered into the30s for some reason and all were renumbered again by B & O in July 1901. One - 297 - was sold to a dealer in 1910, who sold it to the Ocala Northern as there 111 in November 1911.(The ON was originally the Ocklawaha Valley Railroad running from Ocala to Silver Springs, Fla. Soon after it bought 111, the ON went into receivership and re-emerged as the OV. Falling into disrepair, it was the object of several railroads' interest, but its sale to a New York company resulted in the rapid dismantling of the railroad in 1923. See http://www.webspawner.com/users/ovrailroad/ , visited on 6 Aug 2004)


Class B-31 (Locobase 2003)

These Class D engines had a higher boiler pressure than their B-30 forebears and lasted until 1924. Alvin F Staufer & Lawrence W Sagle, B & O Power (1964).


Class B-37 (Locobase 2089)

Alvin F Staufer & Lawrence W Sagle, B & O Power (1964). Baldwin Locomotive Works Specification for Engines, as digitized by the DeGolyer Library of Southern Methodist University Volume 18, p. 143. Works numbers were 13089 and 13094 in December 1892.

Low-drivered Eight-wheelers for local traffic on this 75-mile northern Ohio road. Note that the adhesion weight is taken from the estimate in the specifications. The original estimate for engine weight was an even 100,000 lb.

The Cleveland Terminal & Valley Railroad was operated by the B&O beginning in July 1909; the B&O bought the line on 1 October 1915. These engines were renumbered 154-155.


Class B-38 (Locobase 2090)

Alvin F Staufer & Lawrence W Sagle, B & O Power (1964). and B & O to 1954 Assorted Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection.

A low-drivered class of Ten-Wheelers purchased by the Cleveland Terminal & Valley Railroad. The firebox was dropped in between the second and third driving axle, leaving quite uneven spacing between the drivers.

Renumbering them as 156-162 on the B&O occurred sometime before 1907. Alvin F Staufer & Lawrence W Sagle


Class B-45a simpled (Locobase 16202)

Data from B & OSW 10 - 1901 Desc of Locos supplied in May 2005 by Allen Stanley from his extensive Raildata collection. See also Alvin F Staufer & Lawrence W Sagle, B & O Power (1964). See Locobase 2017 for the origins of the B&OSW.

Relatively high-drivered Ten-Wheelers originally built as compounds; see Locobase 2015.They were quickly rebuilt as simple-expansion engines. The railroad also fitted thicker tires that increased driver diameter by an inch (25.4 mm).

As such, the class served another 20 years before being retired in 1923 (3) and 1925 (2).


Class B-46 (Locobase 2040)

According to Sagle, 1964, the Cincinnati, Hamilton, & Dayton, which then controlled the Pere Marquette in Michigan, was taken under B&O control for a 7-year trial in 1909. During this time it remained a separate railroad. After a term in receivership that began in 1913, however, the CH&D had been separated from the Pere Marquette. Meanwhile, the B&O had assumed full control in 1912 (September 1) and renumbered all the sizable stud of CH&D engines beginning in August 1917.

These Ten-Wheelers served the B&O until 1923.


Class B-47 (Locobase 2041)

Although technically under B&O control for the last few years of their operation, these Cincinnati, Hamilton, & Dayton engines had retired by 1915 and were not renumbered. It's hard to believe that the BP on an 1892 main-line engine would have been 125 PSI.

Sagle 1964


Class B-47 (Locobase 2042)

Cincinnati, Hamilton, & Dayton Ten-Wheeler class of which 19 were renumbered by the B&O. The last of the renumbered group ran until 1927. 323-324 were not renumbered, having left service by 1917.

Sagle 1964

Builder information from B Rumary list supplied by Allen Stanley in March 2004. Works numbers were 1350-1357 (July 1892), 1401-1406 (February 1893), 1453 (April 1893),


Class B-48 (Locobase 2043)

Similar to 25 earlier engines but heavier and standing a higher BP, these low-drivered Cincinnati, Hamilton, & Dayton Ten-Wheelers were renumbered by the B&O as 192-197. The last one was retired by 1924.

Sagle 1964


Class B-49 (Locobase 2044)

Similar to the B-47s, but fitted with higher drivers. These Cincinnati, Hamilton, & Dayton Ten-Wheelers were renumbered by the B&O as 198-200. The last one was retired by 1929.

Sagle 1964


Class B-5 (Locobase 11654)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 15, p. 271. Works numbers were 10496, 10502 in December 1889.

According to Gene Connelly's Baldwin production list, this pair originally went to the Alabama Midland as their Troy (#17) and Montgomery (#16). They were quickly sold to the B&O. Other sources show only the B&O ownership.


Class B-50 (Locobase 2045)

Data from Railway Age Gazette, Vol 28 (8 December 1899), p. 921, and Sagle 1964

Another version of the low-drivered Cincinnati, Hamilton, & Dayton Ten-Wheelers. This class had Belpaire boilers.

Only 337-338 were renumbered by the B&O, as 201-202. The last of the five was retired by 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.


Class B-51 (Locobase 2046)

Although built by the same company that has supplied earlier Cincinnati, Hamilton, & Dayton Ten-Wheelers over the previous 10 years, these engines had much taller drivers and weighed 6 tons more than the heaviest 4-6-0 up to that time. These became B&O 203-204 and ran until 1934.

Sagle 1964


Class B-52/B-53 (Locobase 2047)

Higher-drivered versions of the large low-drivered class of Cincinnati, Hamilton, & Dayton Ten-Wheelers introduced in 1902, these were passenger engines. B-52 (341-343) were delivered in 1903.

Sagle 1964


Class B-54 (Locobase 2048)

Heavier Cincinnati, Hamilton, & Dayton Ten-Wheelers with cylinders 1" larger in diameter than the B-51s delivered in the same year. The design had a tapered boiler with an extended smokebox. By 1938, at least one 241) had been fitted with Walschaerts gear, although the engine still had slide rather than piston valves.

This relatively large class of low-drivered engines apparently served a branch-line need for the CH&D and its successor, the B&O, because the last of them wasn't retired until 1950. 360-385 became 240-265 in 1917; 386-387 were not renumbered.

Sagle 1964 and B & O to 1954 Assorted Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection.


Class B-55 (Locobase 2111)

See Sagle, 1964 and B & O to 1954 Assorted Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection. Works number was 27858 in April 1906.

Not a mainline express type, but a freight hauler for the M&K. Later renumbered 163 and ran until 1947.


Class B-56 (Locobase 2112)

See Alvin F Staufer & Lawrence W Sagle, B & O Power (1964). and B & O to 1954 Assorted Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection. Works number was 33704 in August 1909.

Photograph of this M&K Ten-Wheeler shows small drivers, slide valve, inside motion, coned boiler with the steam dome sitting on the first course, sand dome ahead of the first driver, and tall, vase-like stack. Looks a little old-fashioned for a 1909 engine. Baldwin specs show an estimated adhesion weight of 96,000 lb (43,545 kg) and engine weight of 124,000 lb (56,246 kg).

Later renumbered 164 and ran until 1946.


Class B-57 (Locobase 2070)

The Cincinnati, Indianapolis, & Western Railroad was spun off the Cincinnati, Hamilton, & Dayton when the latter went into receivership in 1913. The B&O took control of the CI&W in 1927 and reclassified these engines, renumbering them 165-170. They retired by 1938.

Sagle 1964


Class B-58 (Locobase 2071)

Data from B & O to 1954 Assorted Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection. See also DeGolyer, Vol 55, pp. 232+. Works numbers were 42773-42776 in December 1915; 42856-42861 in February 1916.

These Ten-wheelers used 10" (254 mm) piston valves. Firebox heating surface area included 13.2 sq ft (1.2 sq m) in two arch tubes. Baldwin also fitted a steam jet smoke consuming device "through inner tubes, inside of fire box and with ring blower around nozzle."

Slightly smaller than the Schenectady engines delivered to the CI&W in the same year. The B&O renumbered them 171-180 and later renumbered them again. Unlike the Schenectadies, these lasted until 1953.


Class B-7 (Locobase 1251)

Sagle 1964; data from Baltimore & Ohio Steam and Electric Locomotive Diagrams by Alvin Staufer (self-published in 1964), supplied by Allen Stanley in May 2005 from his extensive Raildata collection. See also DeGolyer, Volume 16, p. 118. Works numbers were 10773 in April 1890, 11108-11109 in August 1890, and 11428, 11432-11435 in December 1890.

1300 was completed with 66" drivers but later received the 62" of her sisters, along with an inclined firebox. The design's boiler was among the biggest of the time, the grate area and adhesion weight only a little less so.

All had left service by 1936.


Class B-8 (Locobase 1252)

Data from B & O to 1954 Asstd Loco Diagrams book supplied in May 2005 by Allen Stanley from his extensive Raildata collection. See also DeGolyer, Volume 18, p. 187. Baldwin works numbers were 12497-12500, 12502, 12506-12507, 12510-12511, 12513 in February 1892;

12519, 12521, 12527 in March; 13355, 13395, 13397-13398, 13401-13402, 13404 in April 1893; 13417, 13422-13429, 13432-13435, 13443-13445, 13460-13465, 13468-13470 in May; 13479, 13488-13489 in June

Large class of which the first ten (1350-1359) were built by the B&O (1891) and the other 50 by Baldwin (1892-1893). Alvin F Staufer & Lawrence W Sagle, B & O Power (1964). notes modifications that led to two subclasses:

B-8a -- extensive alterations to four engines (1343, 1365, 1377, 1388) included Walschaerts valve gear and piston valves, superheater. (New EHS area was 1,321 sq ft; SHS added 282 sq ft.) Weight rose to 140, 825 lb and the engines had a distinctive copper flare top to the stack.

B-8tob -- Nine engines (1344, 1346, 1351, 1361, 1364, 1366, 1368, 1384-1385) received the inclined firebox in 1896. Steam pressure rose to 175 lb. Sagle sets the new tractive effort at 23,439 lb. That combination suggests adoption of 66" drivers.

Later B-8 service was confined to the Ohio River subdivision because they could cross the old, lightly built Point Pleasant bridge over the Kanawha River bridge. In the late 1940s, a new bridge meant these engines could be retired and they soon left service.


Class Class B (Locobase 2114)

Data from Alvin F Staufer & Lawrence W Sagle, B & O Power (1964). See also DeGolyer, Vol 31, p. 96. Works number was 32218 in November 1907.

The D & U specified performance for this freight Ten-wheeler that included puling 900-990 short trailing tons up a 0.75% (39 ft to the mile) grade. Its design was identical to a pair of 4-6-0s sold to the Idaho & Washington in the same year (Locobase 13161), which meant that it too had one of the highest heating surface area to grate area ratios found in a conventional locomotive boiler. The firebox was quite narrow (32 1/4"/819 mm) wide) and very deep (85 1/2"/2,172 mm in front, 83 1/2"/2,121 mm in the back). So the high tube cross-section in all likelihood pulled a heavy draft across the grate.

The 47-mile short line was taken over by the B&O on 1 June 1919. This survivor was not renumbered and was retired by 1928.

See also Locobases 12873 and 13161 for identical locomotives sold to the Brinson and the Idaho & Washington Northern railroads in the same short period.


Class Class F /B-41, B-42 (Locobase 6522)

Data from B & OSW diagram book dated July 1900 supplied in May 2005 by Allen Stanley from his extensive Raildata collection. See also "Notes on the National Exposition of Railway Appliances - Locomotives - Brooks", American Engineer and Railroad Journal, (22 June 1883), p. 330. Works numbers were 1029-1038 in July 1884, 1043-1054 in September.

These appear to be of the "standard-gauge,ten-wheel freight engine" displayed and described in the AERJ article.

See Locobase 2017 for the origins of the B&OSW. The O&M was reorganized as the Baltimore & Ohio Southwestern in November 1893 and was operated by the B&O under an open lease.

All were retired by the B&O by 1910.


Class Class F/B-41 (Locobase 2012)

Relatively lightweight and lightly pressed engines as the low boiler pressure suggests. O & M became part of the Baltimore & Ohio Southwestern in 1893. The B & OSW was absorbed into the B & O proper in 1900.

Reclassed in 1900 as B-41. The last engine retired in 1912.

Alvin F Staufer & Lawrence W Sagle, B & O Power (1964).

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 1029-1038 in July 1884,

(Works #1025-27 in June 1884, which went to the Cincinnati, Washington & Baltimore as their 28-30, were probably identical)


Class Class I (Locobase 2024)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 15, p. 232 and Sagle 1964. Works numbers were 10601, 10603-10604, and 10606-10607 in January 1890.

Once in service, it was obvious that the cylinder volume simply wasn't big enough and the cylinders were bored out to 15". Three were sold to the B&O in 1902 as their Class B-N. The other two -- 20 and 22 -- went to the Bradford, Bordell & Kinzua as their 14-15, thence to the B & O as 95 and 97. When the P & W narrow-gauge line now owned by the B & O was converted to standard gauge in 1911-1912, 21 and 23 were scrapped and 24 went to the West Virginia Midland.


Class Class L/J/K (Locobase 2026)

Small, low-drivered ten-wheelers built for the Pittsburgh & Western in three classes from 1888-1890. When the B&O took over the P&W in 1902, the surviving engines were reclassified as follows:

Class L (107-111, 131-151) became Class B-10a (181-185, 187-207)

Class J (91, 92) -- 96,420 total weight -- was redesignated Class B-21.

Class K (102-105) became Class B-22 (176-179).

Builder information from B Rumary list supplied by Allen Stanley in March 2004. Works numbers were 1120-1139 (April-June 1890).


Class Class M (Locobase 2027)

Renumbered by the B&O in 1902 as Class B-23, 284-285. See Alvin F Staufer & Lawrence W Sagle, B & O Power (1964)..

Builder information from B Rumary list supplied by Allen Stanley in March 2004. Works numbers were 1746-1747 (October 1897). Both were retired in 1923.


Class Class N/B-24 (Locobase 2029)

Data from "Ten-wheeled Passenger Locomotive," Locomotive Engineering, Volume X, No. 12 (December 1897), pp. 881-882. See also Alvin F Staufer & Lawrence W Sagle, B & O Power (1964). Works numbers were 1739-1740 in October 1897. Builder information from B Rumary list supplied by Allen Stanley in March 2004.

The LE reported that these passenger Ten-wheels were intended for service of "exceptionally severe character, being on grades of 80 to 90 feet per mile."

When the P&W joined the B&O in 1902, the big railroad reclassified them as B-24 (1337-1338)

Both were scrapped in 1928.


Class F (Locobase 2011)

Alvin F Staufer & Lawrence W Sagle, B & O Power (1964). See Locobase 2017 for the origins of the B & OSW.

Reclassed in 1900 as B-42, B-42odd, and B-43, these differed little from the later B-41 except for driver diameter. Brooks built the 174 (101,000 lb) in 1883 and 171-173 (97,500 lb) in 1884. New York Locomotive built 175-178 (100,000 lb) in 1886. See Locobase 2017 for the origins of the B & OSW.

The last engine retired in 1915.


Class F/B-40 (Locobase 6521)

Data from B&OSW diagram book dated July 1900 supplied by Allen Stanley from his extensive Raildata collection May 2005. See also DeGolyer, Volume 16, p. 119 and Volume 18, p. 84; "World's Fair Exhibit of Baldwin Locomotive Works," Railway Review, Volume 33 (5 August 1893), p. 480, 482. Works numbers were 11322-11323 in November 1890; 11427, 11443-11444, 11448, 11451, 11464, 11474 in December; 12985, 12994 in October 1892; 13362 in April 1893, and 14598-14601, 14608-14613 in December 1896.

See Locobase 2017 for the origins of the B&OSW.

Compared to the earlier Brooks Ten-wheelers delivered to the B & OSW in the 1880s and early 1890s, this class of freighters was not much heavier, but it had bigger grates and a larger boiler with longer tubes and more firebox heating surface. The 1890 batch was delivered with 234 tubes, the rest with the 223 shown.

All were renumbered in 1893 by the B&OSW in the single sequence of 217-239. When the B&O renumbered the engines again in 1900, the sequence changed to 115-137.

116 was retired in 1917, 120 in 1920, 119, 124 in 1922. All the rest went in 1923.


Class F/B-42 & 42odd (Locobase 6523)

Data from B & OSW diagram book dated July 1900 supplied by Allen Stanley from his extensive Raildata collection May 2005. Works numbers were 907 in December 1883, 1025-1027 in June 1884.

This small class seems to be a low-drivered variant of the 237 class. The boiler also is credited with less heating surface although Locobase notes that the tube length is an inch greater and only two tubes have been deleted.


Class F/B-43 (Locobase 6524)

Data from B & OSW diagram book dated July 1900 supplied by Allen Stanley from his extensive Raildata collection May 2005. See Locobase 2017 for the origins of the B & OSW.

A follow on to the B-42s from a different builder, this small batch had a shorter boiler but a few more tubes and slightly larger firebox because of a larger grate.


Class F/B-44 (Locobase 2014)

Data from Alvin F Staufer & Lawrence W Sagle, B & O Power (1964) and from B & OSW diagram book dated July 1900 supplied in May 2005 by Allen Stanley from his extensive Raildata collection. See also DeGolyer, Volume 16, p. 119. Works numbers were 1601-1610 in January 1890.

As specified in 1889, the boilers of these relatively heavy Ten-Wheelers had 234 2 1/4" tubes each measuring 13 feet 3 11/16" (4.06 m) long. The boiler shown in the data above was obviously a new vessel with more but slimmer tubes.

See Locobase 2017 for the origins of the B & OSW.

Nine were reclassed in 1900 as B-44. 1912 meant retirement for all but one of the remaining nine locomotives with the ninth going out of service in 1915.


Class F/Bodd (Locobase 2013)

Alvin F Staufer & Lawrence W Sagle, B & O Power (1964). and data from Alvin F Staufer's Baltimore & Ohio Steam and Electric Locomotives (Medina, Ohio) supplied by Allen Stanley from his extensive Raildata collection May 2005. Alvin F Staufer & Lawrence W Sagle, B & O Power (1964). Works number was 698 in December 1883.

See Locobase 2017 for the origins of the B & OSW.

Small, light, low-drivered Ten-Wheeler. Reclassed in 1900 as Bodd, retired in 1912.


Class Hayes Ten-Wheeler (Locobase 2605)

Boiler data from Llewellyn V. Ludy's Locomotive Boilers and Engines (1920) as presented on the San Diego Railroad Museum's web site.

Boiler pressure is a Locobase estimate.

Very similar to Ross Winans' Camels, the Hayes' Ten-Wheelers had a 4-wheel leading truck. Ludy noted that the firebox was 42 1/4" long by 59 1/4" wide, which works out to the grate area given above. Ludy' Figure 4 shows the odd cab and stack. The stack was a straight and very tall pipe set back from the smokebox front and just ahead of the cab. The cab was more like a house glazed all around in two-high sashes over a paneled base.


Class J/J-2 (Locobase 2084)

Similar to Ohio River Railroad engines. 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 #2297-2305 in January 1890.

Class Js weighed 114,000 lb. When the Cleveland, Lorain & Wheeling came under formal control by the B&O in 1909, these engines had already been renumbered. The Js became B-34 and were numbered 139-147. J-2s (works #2563-2568 in September 1895) became B-34a and renumbered 148-153. Alvin F Staufer & Lawrence W Sagle, B & O Power (1964).


Class K (Locobase 2085)

Renumbered 2070-2081 when the CL&W became part of the B&O; they were classified B-36. Photo shows a simple steam dome on the thick first boiler course, sand dome well forward on the more slender second course. Outside slide valve, inside valve motion. Alvin F Staufer & Lawrence W Sagle, B & O Power (1964).


Class K/B-45a (Locobase 2015)

Data from B & OSW 10 - 1901 Desc of Locos supplied in May 2005 by Allen Stanley from his extensive Raildata collection. See also DeGolyer, Volume 22, p. 78; and Alvin F Staufer & Lawrence W Sagle, B & O Power (1964). See Locobase 2017 for the origins of the B&OSW. Works numbers were 16495-16499 in February 1899.

Relatively high-drivered Ten-Wheelers originally built as compounds. Each of the two 13" (330 mm) piston valves served a set of one high-pressure and one low-pressure cylinder.

Reclassed in 1900 as B-45a, the quintet was later rebuilt in simple-expansion layout with 19 1/2" x 26" cylinders. As such, the class served another 20 years before being retired in 1923 (3) and 1925 (2).


Class T (Locobase 2982)

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 2807 in September 1897 and 2873 in December.

Improved Belpaire boiler and full wooden cab -- transitional design.

9 wasold in March 1921 to the Nacional de Mexico.

The BR&P sold the 13 to locomotive rebuilder/reseller Southern Iron & Equipment in 1920. SI&E found a buyer in the Delaware & Northern as their #9.


Class T2 (Locobase 2981)

Data from Catalogue Descriptive of Simple and Compound Locomotives built by Brooks Locomotive Works, Dunkirk, NY (Buffalo, NY: Matthew-Northrup Company, 1899. See also Robert R Rothfus, "More About Locomotives of the Buffalo, Rochester & Pittsburgh Railway, Railroad and Locomotive History Society Bulletin #119 (October 1968), p. 36", and "Ten-wheel Passenger Locomotives for the BR&P RR", Railroad Gazette, Volume XXXI, No 13 (31 March 1899), pp. 224-225.

Although the drivers were not particularly tall, this design stood high. Its Improved Belpaire boiler was pitched well above the running gear, which had 10" (254 mm) piston valves angled in for operation by inside valve gear.

The catalogue shows an engine of this class with 184 on its dome, cab, and tender, but it's clear that the class was numbered 190-194. Rothfus's R&LHS accounting says that the BR&P ordered the quintet, but that they were placed under the Allegheny & Western Railway Company, "another leased entity" in 1898-1899, then leased back.

Whatever their numbering, Rothfus says, these were the BR&P's "'big engines'...the pride of the line". The through trains to Pittsburgh they were to pull wasn't even scheduled to open until late 1899. They were stored and ready, but the "handsome passenger cars" they were to move encountered delays and the cars only just made the deadline.


Class Thatcher Perkins/B (Locobase 1024)

Kinert, 1962 and data from Alvin F Staufer's Baltimore & Ohio Steam and Electric Locomotives (Medina, Ohio) supplied by Allen Stanley from his extensive Raildata collection May 2005.

Leader of a class of eleven 4-6-0s built during the Civil War. The Thatcher Perkins itself was completed with a long combustion chamber with an ash hopper on the bottom. Her firebox measured 78 1/2" long by 42" wide, yielding a grate area of 16.7 sq ft. J Snowden Bell (1912) noted that the hopper, nicknamed "Horace Greeley's hat" after the New York newspaper publisher, leaked and the combustion chamber was soon removed.

Driver diameters varied from 64 1/2" for Perkins, 60" in 5 more, and 58" in 9, 13, 36, and 136. Flangeless front drivers.

Preserved in 1892, the Thatcher Perkins has been on display at the B&O's Mt Clare roundhouse in downtown Baltimore for decades in its last livery and numbered 117. The 2003 snow-induced collapse of the roundhouse roof "severely damaged" the locomotive, but it was repaired and given its original number.


Class Tyson Ten-Wheeler (Locobase 8806)

Data from Joseph Snowden Bell, The Early Motive Power of the Baltimore & Ohio (1912). Boiler pressure is a Locobase estimate.

Rival to Winans' Ten-wheelers, these were designed by Henry Tyson during his brief reign as Master Mechanic on the B & O. A & W Denmead & Sons of Baltimore supplied 7 of the engines while the shops added two more. They were, says John White (1972), exemplars of the "modern" style introduced by Thomas Rogers which included the spread leading truck, link valve motion, and horizontal cylinders.

Alas for Tyson, this particular class developed a reputation for derailing too easily, and the 9 delivered in 1857 were the only ones of the class. The last was retired in 1894.

Specifications by Steve Llanso of Sweat House Media
Class J305B / B-53B-10 / B-12B-11
Locobase ID2010 1025 12,723 1253 1254
RailroadBaltimore & Ohio Southwestern (B&O)Baltimore & Ohio (B&O)Cincinnati, Hamilton & Dayton (B & O)Baltimore & Ohio (B&O)Baltimore & Ohio (B&O)
CountryUSAUSAUSAUSAUSA
Whyte4-6-04-6-04-6-04-6-04-6-0
Number in Class15946
Road Numbers202-216305/217/187344-352 / 231-2391500-1503 / 210-2131550-1555 / 216-221
GaugeStdStdStdStdStd
Number Built15946
BuilderseveralB & OBurnham, Williams & CoPittsburghPittsburgh
Year18901869190418911891
Valve GearStephensonStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft)14.33 8.8314.83
Engine Wheelbase (ft)24.7130.3025.08
Ratio of driving wheelbase to overall engine wheebase 0.58 0.29 0.59
Overall Wheelbase (engine & tender) (ft)49.3344.49
Axle Loading (Maximum Weight per Axle) (lbs)35,93020,780
Weight on Drivers (lbs)107,79056,800111,50081,58597,020
Engine Weight (lbs)129,85077,100140,000101,000119,070
Tender Loaded Weight (lbs)82,05052,000100,000
Total Engine and Tender Weight (lbs)211,900129,100240,000
Tender Water Capacity (gals)400020005000
Tender Fuel Capacity (oil/coal) (gals/tons)8 3.50
Minimum weight of rail (calculated) (lb/yd)6032624554
Geometry Relating to Tractive Effort
Driver Diameter (in)5650695056
Boiler Pressure (psi)160115180150150
High Pressure Cylinders (dia x stroke) (in)20" x 24"19" x 22"19" x 26"18" x 24"19" x 24"
Tractive Effort (lbs)23,31415,52720,81219,82919,726
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.62 3.66 5.36 4.11 4.92
Heating Ability
Firebox Area (sq ft)16873175.50
Grate Area (sq ft)27.1817.2024.702326
Evaporative Heating Surface (sq ft)1909881234013731653
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)1909881234013731653
Evaporative Heating Surface/Cylinder Volume218.76122.03274.26194.24209.88
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation43491978444634503900
Same as above plus superheater percentage43491978444634503900
Same as above but substitute firebox area for grate area26,880839531,590
Power L1470416547806
Power MT288.63192.59463.03

Specifications by Steve Llanso of Sweat House Media
ClassB-13B-14B-15B-17 / B-17aB-17A
Locobase ID1255 1110 1256 12,479 1257
RailroadBaltimore & Ohio (B&O)Baltimore & Ohio (B&O)Baltimore & Ohio (B&O)Baltimore & Ohio (B & O)Baltimore & Ohio (B&O)
CountryUSAUSAUSAUSAUSA
Whyte4-6-04-6-04-6-04-6-04-6-0
Number in Class210599
Road Numbers1575-1576 / 222-2231308-1313, 1319-13221314-13181328-13361328-1336
GaugeStdStdStdStdStd
Number Built210599
BuilderPittsburghBurnham, Williams & CoBurnham, Williams & CoBurnham, Williams & CoB & O
Year18931896189619011905
Valve GearStephensonStephensonStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft)13.6713.6713.5013.50
Engine Wheelbase (ft)24.5024.5025.5825.58
Ratio of driving wheelbase to overall engine wheebase 0.56 0.56 0.53 0.53
Overall Wheelbase (engine & tender) (ft)51.6053.12
Axle Loading (Maximum Weight per Axle) (lbs)40,450
Weight on Drivers (lbs)92,610119,070112,455112,800110,200
Engine Weight (lbs)119,700154,230141,200152,700148,900
Tender Loaded Weight (lbs)102,20078,000100,000102,250
Total Engine and Tender Weight (lbs)256,430219,200252,700251,150
Tender Water Capacity (gals)5000350050005000
Tender Fuel Capacity (oil/coal) (gals/tons)10.5010
Minimum weight of rail (calculated) (lb/yd)5166626361
Geometry Relating to Tractive Effort
Driver Diameter (in)5678787878
Boiler Pressure (psi)150190190200200
High Pressure Cylinders (dia x stroke) (in)19" x 26"21" x 26"20" x 26"15" x 28"20" x 28"
Low Pressure Cylinders (dia x stroke) (in)25" x 28"
Tractive Effort (lbs)21,37023,74121,53320,19224,410
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.33 5.02 5.22 5.59 4.51
Heating Ability
Firebox Area (sq ft)181.40215.20181176.62
Grate Area (sq ft)2634.273434.2734
Evaporative Heating Surface (sq ft)17002160219421992195
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)17002160219421992195
Evaporative Heating Surface/Cylinder Volume199.25207.24232.07383.98215.60
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation39006511646068546800
Same as above plus superheater percentage39006511646068546800
Same as above but substitute firebox area for grate area34,46640,88836,20035,324
Power L17268854350737861
Power MT403.71502.44297.45471.79

Specifications by Steve Llanso of Sweat House Media
ClassB-18AB-19aB-26B-27B-28
Locobase ID1258 1259 1445 1446 2000
RailroadBaltimore & Ohio (B&O)Baltimore & Ohio (B&O)Monongahela River (B&O)Monongahela River (B&O)Ohio River (B&O)
CountryUSAUSAUSAUSAUSA
Whyte4-6-04-6-04-6-04-6-04-6-0
Number in Class3535322
Road Numbers2000-20342035-20693-5 / 230-2327-861-62 / 275-276
GaugeStdStdStdStdStd
Number Built3535322
BuilderB & OB & OPittsburghPittsburghPittsburgh
Year19081908189018981900
Valve GearStephensonStephensonStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft)13.17
Engine Wheelbase (ft)25.67
Ratio of driving wheelbase to overall engine wheebase 0.51
Overall Wheelbase (engine & tender) (ft)54.58
Axle Loading (Maximum Weight per Axle) (lbs)43,580
Weight on Drivers (lbs)119,840130,095
Engine Weight (lbs)173,400171,990106,600127,200124,600
Tender Loaded Weight (lbs)116,600
Total Engine and Tender Weight (lbs)290,000
Tender Water Capacity (gals)6000
Tender Fuel Capacity (oil/coal) (gals/tons)11
Minimum weight of rail (calculated) (lb/yd)6772
Geometry Relating to Tractive Effort
Driver Diameter (in)6868505655
Boiler Pressure (psi)200200150160180
High Pressure Cylinders (dia x stroke) (in)21" x 28"21" x 28"18" x 24"19" x 26"19" x 26"
Tractive Effort (lbs)30,87030,87019,82922,79526,110
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.88 4.21
Heating Ability
Firebox Area (sq ft)223
Grate Area (sq ft)35.1435
Evaporative Heating Surface (sq ft)26312642
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)26312642
Evaporative Heating Surface/Cylinder Volume234.39235.37
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation70287000
Same as above plus superheater percentage70287000
Same as above but substitute firebox area for grate area44,600
Power L17565
Power MT417.51

Specifications by Steve Llanso of Sweat House Media
ClassB-29B-30B-31B-37B-38
Locobase ID2001 2002 2003 2089 2090
RailroadOhio River (B&O)Ohio River (B&O)Ohio River (B&O)Valley Railway (B&O)Cleveland Terminal & Valley (B&O)
CountryUSAUSAUSAUSAUSA
Whyte4-6-04-6-04-6-04-6-04-6-0
Number in Class44227
Road Numbers100, 102-104 /278, 280-8220-23 / 30-33 / 296-29951-5229-30 / 154-15531-37
GaugeStdStdStdStdStd
Number Built44227
BuilderManchesterBrooksBrooksBurnham, Williams & CoPittsburgh
Year19011888189218921894
Valve GearStephensonStephensonStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft)13.8313.83
Engine Wheelbase (ft)24.0624.06
Ratio of driving wheelbase to overall engine wheebase 0.57 0.57
Overall Wheelbase (engine & tender) (ft)48.87
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)75,00083,600
Engine Weight (lbs)128,000104,600112,80096,000113,100
Tender Loaded Weight (lbs)82,830
Total Engine and Tender Weight (lbs)195,930
Tender Water Capacity (gals)30003000
Tender Fuel Capacity (oil/coal) (gals/tons)7
Minimum weight of rail (calculated) (lb/yd)4246
Geometry Relating to Tractive Effort
Driver Diameter (in)61.5057575454
Boiler Pressure (psi)180140160160160
High Pressure Cylinders (dia x stroke) (in)19" x 26"18" x 24"18" x 24"18" x 24"18" x 24"
Tractive Effort (lbs)23,35116,23418,55319,58419,584
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.83 4.27
Heating Ability
Firebox Area (sq ft)131131.23
Grate Area (sq ft)17.18
Evaporative Heating Surface (sq ft)14671530
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)14671530
Evaporative Heating Surface/Cylinder Volume207.54216.45
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2749
Same as above plus superheater percentage2749
Same as above but substitute firebox area for grate area20,96020,997
Power L143234454
Power MT381.22352.37

Specifications by Steve Llanso of Sweat House Media
ClassB-45a simpledB-46B-47B-47B-48
Locobase ID16,202 2040 2041 2042 2043
RailroadBaltimore & Ohio Southwestern (B&O)Cincinnati, Hamilton & Dayton (B&O)Cincinnati, Hamilton & Dayton (B&O)Cincinnati, Hamilton & Dayton (B&O)Cincinnati, Hamilton & Dayton (B&O)
CountryUSAUSAUSAUSAUSA
Whyte4-6-04-6-04-6-04-6-04-6-0
Number in Class522216
Road Numbers1323-1327170-171302-303304-324325-330
GaugeStdStdStdStdStd
Number Built22216
BuilderB&OPittsburghPittsburghPittsburghPittsburgh
Year19001881189218921893
Valve GearStephensonStephensonStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft)13.6711.92
Engine Wheelbase (ft)25.2521
Ratio of driving wheelbase to overall engine wheebase 0.54 0.57
Overall Wheelbase (engine & tender) (ft)54.98
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)118,70585,750
Engine Weight (lbs)152,655116,000100,200105,500122,600
Tender Loaded Weight (lbs)101,00063,000
Total Engine and Tender Weight (lbs)253,655168,500
Tender Water Capacity (gals)50002800
Tender Fuel Capacity (oil/coal) (gals/tons)10 6.50
Minimum weight of rail (calculated) (lb/yd)6648
Geometry Relating to Tractive Effort
Driver Diameter (in)7364575757
Boiler Pressure (psi)200160125160180
High Pressure Cylinders (dia x stroke) (in)19.5" x 26"18" x 24"18" x 24"18" x 24"18" x 24"
Tractive Effort (lbs)23,02316,52414,49518,55320,872
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.16 4.62
Heating Ability
Firebox Area (sq ft)168.40133
Grate Area (sq ft)34.2022.92
Evaporative Heating Surface (sq ft)24151540
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)24151540
Evaporative Heating Surface/Cylinder Volume268.72217.87
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation68403667
Same as above plus superheater percentage68403667
Same as above but substitute firebox area for grate area33,68021,280
Power L188194742
Power MT491.37365.75

Specifications by Steve Llanso of Sweat House Media
ClassB-49B-5B-50B-51B-52/B-53
Locobase ID2044 11,654 2045 2046 2047
RailroadCincinnati, Hamilton & Dayton (B&O)Baltimore & Ohio (B&O)Cincinnati, Hamilton & Dayton (B&O)Cincinnati, Hamilton & Dayton (B&O)Cincinnati, Hamilton & Dayton (B&O)
CountryUSAUSAUSAUSAUSA
Whyte4-6-04-6-04-6-04-6-04-6-0
Number in Class325212
Road Numbers331-333289-290334-338339-340341-352
GaugeStdStdStdStdStd
Number Built325212
BuilderPittsburghBurnham, Parry, Williams & CoPittsburghPittsburghPittsburgh
Year18951890190019021903
Valve GearStephensonStephensonStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft)13.50
Engine Wheelbase (ft)23.65
Ratio of driving wheelbase to overall engine wheebase 0.57
Overall Wheelbase (engine & tender) (ft)
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)66,000
Engine Weight (lbs)108,00090,000116,800134,800140,000
Tender Loaded Weight (lbs)
Total Engine and Tender Weight (lbs)
Tender Water Capacity (gals)30004500
Tender Fuel Capacity (oil/coal) (gals/tons)7
Minimum weight of rail (calculated) (lb/yd)37
Geometry Relating to Tractive Effort
Driver Diameter (in)6454576969
Boiler Pressure (psi)180140180180180
High Pressure Cylinders (dia x stroke) (in)18" x 24"18" x 24"18" x 24"18" x 26"19" x 26"
Tractive Effort (lbs)18,59017,13620,87218,67920,812
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.85
Heating Ability
Firebox Area (sq ft)120.45116
Grate Area (sq ft)1723
Evaporative Heating Surface (sq ft)13641767
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)13641767
Evaporative Heating Surface/Cylinder Volume192.97249.98
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation23804140
Same as above plus superheater percentage23804140
Same as above but substitute firebox area for grate area16,86320,880
Power L135055678
Power MT351.24

Specifications by Steve Llanso of Sweat House Media
ClassB-54B-55B-56B-57B-58
Locobase ID2048 2111 2112 2070 2071
RailroadCincinnati, Hamilton & Dayton (B&O)Morgantown & Kingwood (B & O)Morgantown & Kingwood (B & O)Cincinnati, Indianapolis, & Western (B & O)Cincinnati, Indianapolis, & Western (B & O)
CountryUSAUSAUSAUSAUSA
Whyte4-6-04-6-04-6-04-6-04-6-0
Number in Class2811610
Road Numbers360-387214101-106201-210 / 171-80 / 235-44
GaugeStdStdStdStdStd
Number Built2811610
BuilderPittsburghBurnham, Williams & CoBaldwinSchenectadyBaldwin
Year19021906190919161916
Valve GearStephensonStephensonStephensonSouthern
Locomotive Length and Weight
Driver Wheelbase (ft)1211.3311.3313
Engine Wheelbase (ft)22.6721.5822.1724.25
Ratio of driving wheelbase to overall engine wheebase 0.53 0.53 0.51 0.54
Overall Wheelbase (engine & tender) (ft)53.9547.4654.4655.17
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)111,70087,000106,750123,000
Engine Weight (lbs)136,000111,000130,350197,000163,000
Tender Loaded Weight (lbs)160,05280,000100,000126,000
Total Engine and Tender Weight (lbs)296,052191,000230,350289,000
Tender Water Capacity (gals)5000400050006000
Tender Fuel Capacity (oil/coal) (gals/tons)10.5010
Minimum weight of rail (calculated) (lb/yd)62485968
Geometry Relating to Tractive Effort
Driver Diameter (in)5756566057
Boiler Pressure (psi)180190180190190
High Pressure Cylinders (dia x stroke) (in)19" x 26"17" x 24"18" x 26"21" x 28"19" x 28"
Tractive Effort (lbs)25,19420,00323,01633,23728,639
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.43 4.35 4.64 4.29
Heating Ability
Firebox Area (sq ft)149.43146142.28160.20
Grate Area (sq ft)26.6022.2035.4029
Evaporative Heating Surface (sq ft)1938161819121698
Superheating Surface (sq ft)366
Combined Heating Surface (sq ft)1938161819122064
Evaporative Heating Surface/Cylinder Volume227.14256.62249.69184.80
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation4788421863725510
Same as above plus superheater percentage4788421863726502
Same as above but substitute firebox area for grate area26,89727,74025,61035,917
Power L153826604575511,380
Power MT318.67502.05356.56611.92

Specifications by Steve Llanso of Sweat House Media
ClassB-7B-8Class BClass F /B-41, B-42Class F/B-41
Locobase ID1251 1252 2114 6522 2012
RailroadBaltimore & Ohio (B&O)Baltimore & Ohio (B&O)Dayton & Union (B&O)Ohio & Mississippi (B&O)Ohio & Mississippi (B&O)
CountryUSAUSAUSAUSAUSA
Whyte4-6-04-6-04-6-04-6-04-6-0
Number in Class85011620
Road Numbers1300-13071360-1372, 1342-1349, 1373-139960125-146/160-169, 179-188/235-244, 253-262160-169, 179-188
GaugeStdStdStdStdStd
Number Built85011620
BuilderBurnham, Parry, Williams & CoseveralBurnham, Williams & CoBrooksBrooks
Year18901892190718841884
Valve GearStephensonStephensonWalschaertStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft)12.5012.501514
Engine Wheelbase (ft)23.3323.3326.9225.25
Ratio of driving wheelbase to overall engine wheebase 0.54 0.54 0.56 0.55
Overall Wheelbase (engine & tender) (ft)50.5449.6747.83
Axle Loading (Maximum Weight per Axle) (lbs)35,20039,825
Weight on Drivers (lbs)103,300111,825107,00073,700
Engine Weight (lbs)132,300140,825142,000101,000101,000
Tender Loaded Weight (lbs)102,260102,260100,0006800
Total Engine and Tender Weight (lbs)234,560243,085242,000107,800
Tender Water Capacity (gals)5000600050003400
Tender Fuel Capacity (oil/coal) (gals/tons)10.50107
Minimum weight of rail (calculated) (lb/yd)57625941
Geometry Relating to Tractive Effort
Driver Diameter (in)6260585656
Boiler Pressure (psi)165170200135135
High Pressure Cylinders (dia x stroke) (in)21" x 26"20" x 26"18" x 26"19" x 24"19" x 24"
Tractive Effort (lbs)25,93725,04724,69117,75317,753
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.98 4.46 4.33 4.15
Heating Ability
Firebox Area (sq ft)188.54146156136
Grate Area (sq ft)2832.4517.6022.75
Evaporative Heating Surface (sq ft)2035175424011569
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)2035175424011569
Evaporative Heating Surface/Cylinder Volume195.24185.53313.54199.22
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation4620551735203071
Same as above plus superheater percentage4620551735203071
Same as above but substitute firebox area for grate area31,10924,82031,20018,360
Power L14871446780313598
Power MT311.87264.20496.41322.89

Specifications by Steve Llanso of Sweat House Media
ClassClass IClass L/J/KClass MClass N/B-24F
Locobase ID2024 2026 2027 2029 2011
RailroadPittsburgh & Western (B&O)Pittsburgh & Western (B&O)Pittsburgh & Western (B&O)Pittsburgh & Western (B&O)Baltimore & Ohio Southwestern (B&O)
CountryUSAUSAUSAUSAUSA
Whyte4-6-04-6-04-6-04-6-04-6-0
Number in Class531228
Road Numbers20-2491, 92+153-154 / 284-285250-251 / 1337-1338171-178
Gauge3'StdStdStdStd
Number Built531228
BuilderBurnham, Parry, Williams & CoPittsburghPittsburghPittsburghseveral
Year18901888189718971883
Valve GearStephensonStephensonStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft)1013.67
Engine Wheelbase (ft)1924.50
Ratio of driving wheelbase to overall engine wheebase 0.53 0.56
Overall Wheelbase (engine & tender) (ft)51.79
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)44,000113,000
Engine Weight (lbs)58,000105,500120,000145,000101,000
Tender Loaded Weight (lbs)77,000
Total Engine and Tender Weight (lbs)222,000
Tender Water Capacity (gals)20004000
Tender Fuel Capacity (oil/coal) (gals/tons)
Minimum weight of rail (calculated) (lb/yd)2463
Geometry Relating to Tractive Effort
Driver Diameter (in)4450566857
Boiler Pressure (psi)130150160185135
High Pressure Cylinders (dia x stroke) (in)14" x 20"18" x 24"19" x 26"20" x 26"19" x 24"
Tractive Effort (lbs)984519,82922,79524,05017,442
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.47 4.70
Heating Ability
Firebox Area (sq ft)70158
Grate Area (sq ft)11.8031.50
Evaporative Heating Surface (sq ft)8022119
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)8022119
Evaporative Heating Surface/Cylinder Volume225.07224.14
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation15345828
Same as above plus superheater percentage15345828
Same as above but substitute firebox area for grate area910029,230
Power L130826452
Power MT463.27377.63

Specifications by Steve Llanso of Sweat House Media
ClassF/B-40F/B-42 & 42oddF/B-43F/B-44F/Bodd
Locobase ID6521 6523 6524 2014 2013
RailroadBaltimore & Ohio Southwestern (B&O)Baltimore & Ohio Southwestern (B&O)Baltimore & Ohio Southwestern (B&O)Baltimore & Ohio Southwestern (B&O)Baltimore & Ohio Southwestern (B&O)
CountryUSAUSAUSAUSAUSA
Whyte4-6-04-6-04-6-04-6-04-6-0
Number in Class2344101
Road Numbers110-121, 123, 230-239/217-239/115-137171-174/245-248249-252110-119/189-198 /263-271107
GaugeStdStdStdStdStd
Number Built2344101
BuilderBurnham, Parry, Williams & CoBrooksNew YorkBrooksPittsburgh
Year18901884188618901883
Valve GearStephensonStephensonStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft)12.5014131410.17
Engine Wheelbase (ft)23.2525.4222.9223.8321.58
Ratio of driving wheelbase to overall engine wheebase 0.54 0.55 0.57 0.59 0.47
Overall Wheelbase (engine & tender) (ft)48.874646.3947.2545.50
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)101,00075,60082,40098,50064,100
Engine Weight (lbs)127,00097,500100,000122,50087,200
Tender Loaded Weight (lbs)72,25667,00067,00072,81687,668
Total Engine and Tender Weight (lbs)199,256164,500167,000195,316174,868
Tender Water Capacity (gals)35003000300035003200
Tender Fuel Capacity (oil/coal) (gals/tons)67777
Minimum weight of rail (calculated) (lb/yd)5642465536
Geometry Relating to Tractive Effort
Driver Diameter (in)5657575751
Boiler Pressure (psi)160135135160140
High Pressure Cylinders (dia x stroke) (in)20" x 24"19" x 24"19" x 24"19" x 24"18" x 24"
Tractive Effort (lbs)23,31417,44217,44220,67218,144
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.33 4.33 4.72 4.76 3.53
Heating Ability
Firebox Area (sq ft)185123126137102
Grate Area (sq ft)282224.4321.1120
Evaporative Heating Surface (sq ft)20021356141617471049
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)20021356141617471049
Evaporative Heating Surface/Cylinder Volume229.41172.17179.79221.82148.40
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation44802970329833782800
Same as above plus superheater percentage44802970329833782800
Same as above but substitute firebox area for grate area29,60016,60517,01021,92014,280
Power L150093210333246942625
Power MT328.01280.83267.44315.18270.85

Specifications by Steve Llanso of Sweat House Media
ClassHayes Ten-WheelerJ/J-2KK/B-45aT
Locobase ID2605 2084 2085 2015 2982
RailroadBaltimore & Ohio (B&O)Cleveland, Lorain, & Wheeling (B&O)Cleveland, Lorain, & Wheeling (B&O)Baltimore & Ohio Southwestern (B&O)Buffalo, Rochester, & Pittsburgh (B&O)
CountryUSAUSAUSAUSAUSA
Whyte4-6-04-6-04-6-04-6-04-6-0
Number in Class17151252
Road Numbers19850-64 / 139-14765-76150-154/1323-13279, 13
GaugeStdStdStdStdStd
Number Built17151252
BuilderB & OBrooksPittsburghBurnham, Williams & CoBrooks
Year18541893190018991897
Valve GearStephensonStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft) 8.6713.6713
Engine Wheelbase (ft)25.2523.17
Ratio of driving wheelbase to overall engine wheebase 0.54 0.56
Overall Wheelbase (engine & tender) (ft)54.9850.58
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)56,500118,70596,000
Engine Weight (lbs)77,100111,000147,000152,655125,000
Tender Loaded Weight (lbs)101,000
Total Engine and Tender Weight (lbs)253,655
Tender Water Capacity (gals)50004000
Tender Fuel Capacity (oil/coal) (gals/tons)10 8.50
Minimum weight of rail (calculated) (lb/yd)316653
Geometry Relating to Tractive Effort
Driver Diameter (in)5056577268
Boiler Pressure (psi)100180190200180
High Pressure Cylinders (dia x stroke) (in)19" x 20"18" x 24"20" x 26"15" x 26"18" x 24"
Low Pressure Cylinders (dia x stroke) (in)25" x 26"
Tractive Effort (lbs)12,27421,24529,46720,31317,496
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.60 5.84 5.49
Heating Ability
Firebox Area (sq ft)78.91168.40122
Grate Area (sq ft)17.3834.2021.20
Evaporative Heating Surface (sq ft)117724151685
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)117724151685
Evaporative Heating Surface/Cylinder Volume179.33454.14238.38
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation173868403816
Same as above plus superheater percentage173868403816
Same as above but substitute firebox area for grate area789133,68021,960
Power L1199552926623
Power MT233.53294.85456.29

Specifications by Steve Llanso of Sweat House Media
ClassT2Thatcher Perkins/BTyson Ten-Wheeler
Locobase ID2981 1024 8806
RailroadBuffalo, Rochester, & Pittsburgh (B&O)Baltimore & Ohio (B&O)Baltimore & Ohio (B&O)
CountryUSAUSAUSA
Whyte4-6-04-6-04-6-0
Number in Class5119
Road Numbers190-194147/282/117222-230
GaugeStdStdStd
Number Built5119
BuilderBrooksB&Oseveral
Year189818631857
Valve GearStephensonGoochGooch
Locomotive Length and Weight
Driver Wheelbase (ft)1411.08 8.67
Engine Wheelbase (ft)24.2532.2915.02
Ratio of driving wheelbase to overall engine wheebase 0.58 0.34 0.58
Overall Wheelbase (engine & tender) (ft)51.9044.96
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)109,00068,30056,500
Engine Weight (lbs)142,00090,70077,100
Tender Loaded Weight (lbs)98,00063,000
Total Engine and Tender Weight (lbs)240,000153,700
Tender Water Capacity (gals)45003000
Tender Fuel Capacity (oil/coal) (gals/tons)10.504
Minimum weight of rail (calculated) (lb/yd)613831
Geometry Relating to Tractive Effort
Driver Diameter (in)695850
Boiler Pressure (psi)20075100
High Pressure Cylinders (dia x stroke) (in)18" x 26"19" x 26"18" x 24"
Tractive Effort (lbs)20,75510,31713,219
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.25 6.62 4.27
Heating Ability
Firebox Area (sq ft)157113.63
Grate Area (sq ft)30.8019.3918.79
Evaporative Heating Surface (sq ft)20191020
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)20191020
Evaporative Heating Surface/Cylinder Volume263.66119.55
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation616014541879
Same as above plus superheater percentage616014541879
Same as above but substitute firebox area for grate area31,4008522
Power L184221349
Power MT511.03130.63

Reference


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