California Northwestern / San Francisco & North Pacific / Northwestern Pacific / Florence & Cripple Creek / Las Vegas & Tonopah / San Diego & Southeastern / South Pacific Coast / San Antonio & Aransas Pass / Texas & New Orleans / Central Pacific / San Diego & Arizona / Southern Pacific / El Paso & Southwestern / Nevada-California-Oregon / North Pacific Coast 4-6-0 "Ten-Wheeler" Type Locomotives

Class 103 / T-43 (Locobase 8177)

Data from the NWP 10 - 1950 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive collection. See the excellent roster on http://ncespee.railfan.net/rosters/oldnwptxtros.html, access 9 February 2007.

Although built as a pair (works #3304, 3303), these two came to the NWP from different predecessors. 103 entered service as San Francisco & North Pacific #20 while 104 began its career as California Northwestern #31. 103 was scrapped in 1935, followed by 104 in 1906.

Class 105 / T-57 (Locobase 8178)

Data from the NWP 10 - 1950 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive collection. See the excellent roster on http://ncespee.railfan.net/rosters/oldnwptxtros.html, access 9 February 2007.

Delivered from Alco as their works #25620-25621, these two Ten-wheelers entered service in San Francisco & North Pacific #21 and California Northwestern #32. The latter later acquired an SF & NP #25. Once they operated under NWP's herald, they ran until 1934.

Class 109 / T-57 (Locobase 8180)

Data from the NWP 10 - 1950 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive collection. See the excellent roster on http://ncespee.railfan.net/rosters/oldnwptxtros.html, access 9 February 2007. Works number was 18179 in September 1900.

This was C & NW's #1 engine. The lead locomotive later was renumbered 30 by the C & NW. As the Northwestern Pacific's 109, this low-drivered Ten-wheeler remained in service until 1948.

Locobase suspects that NWP 110 (works #17759 in May 1900) was built to the same design; it served the San Francisco & North Pacific as #20 and retired from the NWP in 1937.

Class 111 / T-46 (Locobase 8181)

Data from the NWP 10 - 1950 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive collection. See the excellent roster on http://ncespee.railfan.net/rosters/oldnwptxtros.html, access 9 February 2007.

A rare batch of locomotives to the same design that totalled more than 2 on a Redwood Empire road, this quartet (#44955-44958) was among the first purchases made by the NWP after it opened shop in 1907. The class reproduced the same power dimensions of most other NWP Ten-wheelers, but offered a slightly bigger boiler and firebox.

Three were scrapped in the late 1940s (111 in 1949, 113-114 in 1947), but 112 survived as a museum piece and eventually became part of the California State Railroad Museum's roundhouse.

Class 12 / T-44 (Locobase 8762)

Data from SP Menke All Time Steam Locomotive diagrams supplied in May 2005 by Allen Stanley from his extensive collection and Nevada-California-Oregon (SP), http://www.urbaneagle.com/nco/nco-loco-roster.html, last access 22 September 2007.

Class 130 / T-47 & T-48 (Locobase 8182)

Data from the NWP 10 - 1950 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive collection. See the excellent roster on http://ncespee.railfan.net/rosters/oldnwptxtros.html, access 9 February 2007.

Substantially bigger than earlier NWP Ten-wheelers (whether purchased directly for the road or acquired with the amalgamation of other lines), this sextet consisted of 4 engines produced in 1910 (490890-49092) and two more (51536-51537) in 1912. Even though the cylinders were larger, the boilers were larger still. The grate and firebox didn't grow much at all and may have represented a constraint on free steaming. Was this why the first four were scrapped in 1938 and the later 2 in 1940, or did the taller drivers prove less suitable to the route profiles of the Redwood Empire Route?

Class 136 / T-49 (Locobase 8184)

Data from the NWP 10 - 1950 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive collection. See the excellent roster on http://ncespee.railfan.net/rosters/oldnwptxtros.html, access 9 February 2007.

Just before Alco delivered the superheated trio shown in Locobase 8185, they produced this saturated-steam threesome (work #54578-54579, 54975) that apparently never were superheated. Thus, this set serves as the "before" picture for the 139s, which came after.

All three of this class were scrapped in 1940, doubtless because in a shrinking system, the least efficient engines would be first to go.

Class 139 / T-51 (Locobase 8185)

Data from the NWP 10 - 1950 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive collection. See the excellent roster on http://ncespee.railfan.net/rosters/oldnwptxtros.html, access 9 February 2007.

Alco built this trio in a single batch (works #54976-54978). They immediately followed the last of the 136 trio (Locobase 8184), which had a saturated boiler and immediately preceded the larger 180s (Locobase 8189).

They were moderately-sized, mixed-traffic Ten-wheelers that were apparently all the Redwood Empire Route needed because the railway asked Baldwin for 2 more 8 years later. See Locobase 8191.

139 went out of service first, being scrapped in 1947. 141 was scrapped outright in 1954 while 140 was converted to a stationary boiler.

Class 142 / T-51 (Locobase 8191)

Data from the NWP 10 - 1950 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive collection. Works numbers were 55356 in April and 55473 in June 1922.

Eight years after Alco delivered 3 of this Ten-wheeler design (Locobase 8185), the NWP went to Baldwin for 2 more just like them. Delivered one at a time, the pair served the Redwood Empire Route until 1953.

Class 178 (Locobase 8187)

Data from the NWP 10 - 1950 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive collection. See the excellent roster on http://ncespee.railfan.net/rosters/oldnwptxtros.html, access 9 February 2007. Works number was 29726 in December 1906.

Built for the Bullfrog & Goldfield as their #13, this Ten-wheeler was a bit bigger than the #20 described in Locobase 7276. After a wreck in August 1908, the locomotive was rebuilt as #11 (possibly prompted by a triskadecaphobic impulse). In 1917, 11 came into NWP hands and was renumbered.

In its superheated form the 178 operated until scrapped in January 1954.

Class 1785 (Locobase 11122)

Data from Schenectady Locomotive Works, Illustrated Catalogue of Simple and Compound Locomotives (Philadelphia: J B Lippincott, 1897), pp. 76-77.

Another of Albert J Pitkin's 2-cylinder cross compounds (see Locobase 10803 for a description of the intercepting valve), this engine had a longer stroke than the first trial horses. It was built to compare economies with the identically constructed 1787, except that the latter used simple expansion.

Class 179 (Locobase 8188)

Data from the NWP 10 - 1950 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive collection. See the excellent roster on http://ncespee.railfan.net/rosters/oldnwptxtros.html, access 9 February 2007.

This Ten-wheeler entered service on the LV & T as #12 and seems to have been one of its largest engines. When the Northwestern Pacific absorbed that railroad, it renumbered the locomotive 129. After a later upgrade with superheater, the NWP then gave it 179. The superheater installation in the 179 ranked among the largest of all such configurations on a North American locomotive.

As 179 it carried on until the early 1950s.

Class 18 (Locobase 8174)

Data from the NWP 10 - 1950 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive collection. Information on the provenance of the locomotive from http://ncespee.railfan.net/rosters/oldnwptxtros.html, a Northwestern Pacific roster by John Barnhill, Jr, last accessed 22 September 2007. This engine was Brooks works #3418.

Class 180 / T-57 (Locobase 8189)

Data from the NWP 10 - 1950 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive collection. See the excellent roster on http://ncespee.railfan.net/rosters/oldnwptxtros.html, access 9 February 2007.

1914 saw the NWP acquire the most locomotives of any year when it bought 12. Among them was a string of Ten-wheelers that was completed by this pair of freighters (works #54979-54980). Slightly larger than the three 63" engines that immediately preceded them on the Alco production line (Locobase 8185), the two sported the biggest grates on the NWP and the biggest boilers.

Eight years later, Baldwin would deliver 3 more. See Locobase 8190.

Class 182 / T-57 (Locobase 8190)

Data from the NWP 10 - 1950 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive collection. See the excellent roster on http://ncespee.railfan.net/rosters/oldnwptxtros.html, access 9 February 2007. Works numbers were 55351 in April 1922; 55470 in May and 55471 in June.

In 1922, Baldwin delivered 5 Ten-wheelers to the NWP. Two reproduced the 63"-drivered locomotives originally produced in 1914 by Alco. This trio supplemented Alco's pair of 57"-driver engines, also from 1914 (Locobase 8189). Locobase finds the sequence of 4-6-0 acquisition by this road a bit confusing, but can say the set of freight engines seemed to served the Redwood Empire's logging interests effectively until dieselization.

Class 20 (Locobase 8170)

Data from the NWP 10 - 1950 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive collection. Information on the provenance of the locomotive from http://ncespee.railfan.net/rosters/oldnwptxtros.html, a Northwestern Pacific roster by John Barnhill, Jr, last accessed 22 September 2007.

Handsome-looking pocket Ten-wheeler with good proportions. Baldwin's works # was 8486. When the SPC was taken into the Northwestern Pacific, the NWP renumbered the engine not once, but 3 times.

Class 20 / T-57 (Locobase 7276)

Data from the SD&A 5 - 1921 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive collection. See Locobase 7271 for a summary of Richard V. Dodge's account of the construction of the SD & A.

Gotta love any railway known as the Bullfrog & Goldfield; was it a Mark Twain creation? That was the railroad that took delivery of the 14 (works number was 29727) in December 1906. Renumbered 12 in 1908, the engine's boiler exploded in on 19 December 1910. It's not clear in what condition the 12 presented itself when the B & G sold it to the San Diego & Arizona.

Renumbered 20, the Ten-wheeler remained in service for decades. In 1920, the SD & AE gave it a new, superheated boiler; the specifications refer to this incarnation. The boiler provided an impressive amount of superheat and doubtless enhanced its value to the SD & A.

In 1942, the Espee took the 20 for war work and renumbered it 3285, leasing it back in 1943. Returned to the SD &AE in 1948, the 20 retired in June 1950 and was scrapped 3 months later.

Obviously a useful engine, 20/3285 served until 1950 when it was scrapped.

(Another B & G Ten-wheeler went to the Northwestern Pacific; see Locobase 8187.)

Class 201 / T-38 (Locobase 7248)

Data from the SA&AP 6 - 1917 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive collection. (See Locobase 7235 for a description of this Southeast Texas railroad.) Works numbers were 32515-32516 in December 1907; 32549-32550, 32583-32584, 32642-32643 in January 1908.

An octet of small Ten-wheelers came to the SA & AP for mixed-traffic service. Interestingly, the Railroad Gazette's "Locomotive Building" for 18 October 1907 (p. 471) reported that Baldwin was building Pacifics. They did note the "special equipment" suppliers, the list of which helps flesh out the industrial complex that contributed to building Baldwin steam locomotives in that year:

Air brakes Westinghouse

Boiler lagging Keasbey & Mattlson

Brake-beams Carnegie

Couplers Janney

Headlights Lyle National electric

Injector Nathan

Journal bearings Ajax bronze

Piston rod packings Jerome metallic

Valve rod packings Jerome metallic

Safety valve Crosby

Sanding devices Leach

Sight-feed lubricators Nathan

Springs Standard Steel Works

Tires, driving wheels Midvale

The entire class was taken up by the Texas & New Orleans when that railroad bought the SA & AP in 1925 and placed in the T-38 class. 374 was scrapped in March 1930 and 371 followed in February 1934, but the rest of the class lasted longer before going to the ferro-knacker in January 1937.

Class 21 / 10 (Locobase 7274)

Data from the SD&A 5 - 1921 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive collection. See Locobase 7271 for a summary of Richard V. Dodge's account of the construction of the SD & A.

When the SD & A bought the SD & SE (see Locobase 7273) in 1916, three Ten-wheelers came with the railway. One of them was this product of an earlier age (works #2470) that Locobase suspects came from yet another railroad sometime before. The SD & A numbering included 21 (possibly the number it came with), which soon changed to 10. As #10, the locomotive lasted another two decades before it was scrapped in 1938.

Class 22 / 11 (Locobase 7275)

Data from the SD&A 5 - 1921 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive collection. See Locobase 7271 for a summary of Richard V. Dodge's account of the construction of the SD & A.

When the San Diego & Arizona bought the SD & SE (see Locobase 7273) in 1916, three Ten-wheelers came with the railway. This particular engine (works #2883) was 35 years old when it went to the SD & A, having entered service on some railroad in 1881. Its advanced age meant that it was one of the first to be scrapped, leaving service in 1925.

Class 22 / T-44 (Locobase 8179)

Data from the NWP 10 - 1950 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive collection. See the excellent roster on http://ncespee.railfan.net/rosters/oldnwptxtros.html, access 9 February 2007. Works numbers were 23933, 23951 in March 1904.

Baldwin delivered these Ten-wheelers to the San Francisco & North Pacific which numbered them 22-23. Although 107 left service along with many other NWP engines in the late 1930s (1937), 108 held on until 1948.

Class 320 / T-39 (Locobase 7249)

Data from the SA&AP 6 - 1917 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive collection. (See Locobase 7235 for a description of this SouthEast Texas railroad.) Works numbers was 32369 in December 1907.

This single Ten-wheeler arrived on the SA & AP in 1908. It was taken in by the Texas & New Orleans in 1925, which gave it a new number. Its small grate may have meant less in terms of total evaporative capability given that it was an oil burner; however its firebox still ranked on the small side. Perhaps because it was a one-only also contributed to its relatively early scrapping in March 1930.

Class 4 / T-52 (Locobase 8186)

Data from the NWP 10 - 1950 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive collection. Works numbers were 30105-30107 in February 1907; 31093-31094 in June; 32250-32251 in November.

4, 5, & 8 were taken over by the NWP and renumbered; the trio apparently was never superheated. The 6 went to the Tonopah & Tidewater; it blew up in 1929. After a rebuild, it was sold to the Six Counties Railroad. A sister engine, #7, went to the San Diego & Arizona (see Locobase 7277), where it did receive a superheater.

171 was scrapped first in 1946, 172 followed in 1948, and 170 was gone in 1950.

Class 52 (Locobase 7701)

Data from CC&CS 1912 Locomotive Diagram collection supplied in May 2005 by Allen Stanley from his extensive collection.

See Locobase 7700 for a bried history of the F & CC. Locobase suspects that these Ten-wheelers were based on the same basic firebox and boiler as the Consolidations shown in 7700. Like the 2-8-0s, this class had long afterlives following the dissolution of the F & CC. When the Cripple Creek & Colorado Southern took over the F & CC's trackage, they sold two of these engines to the Nevada-California-Oregon Railway as their numbers 22 & 23. 23 was retired in 1921, but 22 was sold to the Southern Pacific in 1929 and operated under the Espee's aegis for another two decades.

Meanwhile, F & CC's #20 Portland (works# 5007) went to the Rio Grande Southern in 1916 as their 20 (N). After a long career with that railroad, 20 (N) was sold to the Sierra Mountain Railroad Club for museum display.

Class 7 / T-58 (Locobase 7277)

Data from the SD&A 5 - 1921 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive collection. See Locobase 7271 for a summary of Richard V. Dodge's account of the construction of the SD & A.

As far as Locobase can be sure, the LV & T had 4 Ten-wheelers, numbered 4, 5, 7, & 8. Three of them were sold to the Northwestern Pacific. That trio -- which was never superheated -- is described in Locobase 8186.

The information in the specs for this current entry, however, reflects a rebuilding by Southern Pacific shops after the San Diego & Arizona bought four Ten-wheelers from the LV & T in 1921. Three had 63" drivers (see Locobase 7278), one (works #31093 in June 1907) had freight-service, 57" drivers. This single engine served the SD & A and the SD & AE (once the Espee bought it in 1926) until 1940.

Class 9 / T-58 (Locobase 7278)

Data from the SD&A 5 - 1921 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive collection. See Locobase 7271 for a summary of Richard V. Dodge's account of the construction of the SD & A.

The information in the specs reflects a rebuilding by Southern Pacific shops after the San Diego & Arizona bought four Ten-wheelers from the LV & T in 1921. As noted in Locobase 7277, one had freight-service, 57" drivers (Locobase 7276).The other three were mixed-traffic engines that had been delivered as a pair (works #32250-32251 in November 1907) and a single (works #32360 in December 1907).

25 was scrapped in 1940. 26 was taken into the Espee for war work and renumbered 2386. Nominally returned to the SD & AE in 1948, the 26 operated on Espee rails until its scrapping in 1951. 27 went to the scrapper in 1950.

Class DB / T-2 (Locobase 3196)

Data from SP Menke All-Time Steam Loco Diagrams and SP 1 - 1898 Pacific Division Locomotive Classes supplied in May 2005 by Allen Stanley from his extensive collection. 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, the Cooke works numbers were 2267-2280 and the class was built in May 1893.

Locobase pieced together the origins of this class through the Rumary list and the 1898 Classes description (which run only through 1896). The revision date of 5/1/30 in Menke may well represent the very last appearance of this class.

Class DC / T-1 / T-25 (Locobase 3155)

Information from The Roseville Historical Society's Coalition for the Relocation of Locomotive 2252. The firebox heating surface is calculated by subtracting the boiler tube heating surface (which is given in the specs) from the total heating surface (also given in the specs). This matches up with the data found in the SP Menke All-Time Steam Loco Diagrams supplied in May 2005 by Allen Stanley from his extensive collection.

2252 was one of 32 Ten-wheelers built for the Southern Pacific over several years. The first 22 were produced by Cooke Locomotive Works in Paterson, NJ and numbered 1808-1829. Cooke finished the class with 9 more (1838-1846). These batches were later renumbered 2235-56, 2257-64, and 2265-73, respectively, in 1901. The identical T-3s, which were built by Schenectady, delivered as compounds, and rode on 69" drivers, are shown in Locobase 8735.

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, the Cooke works numbers were as follows:

2299-2314 (February-June 1895); road #1808-1823

2340-2344 (July 1896); road #1829-1832.

2360-2364 (March 1897); road #1838-1842

2387-2391 (February 1898); road #1847-1851.

They began their careers as freight helpers on the Donner Pass and later moved into secondary service. In 1929, four of the class were modified as "fire train" or "water train" motive power to battle wildfires started by other steam locomotives. The fire train engines lasted the longest, only being retired in 1955.

Class DF - 57"" / T-6 (Locobase 8736)

Data from SP Menke All-Time Steam Loco Diagrams and SP 1 - 1898 Pacific Division Locomotive Classes supplied in May 2005 by Allen tanley from his extensive collection.

The long stroke on this class of freight Ten-wheelers got Locobase's attention. It was unusual for a 4-6-0 to have this ratio of diameter to stroke. Perhaps the explanation lies in these be "home-grown". The Sacramento Shops built 17 for Central Pacific lines and 5 for the SP's Pacific Division in two driver diameters. This entry shows the 57"; the 63" version is found at Locobase 8737.

The SP's T-6 diagram shows only the 57" version. Its low drivers conferred what tractive effort could be mgenerated on 135 psi, bu the small boiler limited steaming capability.

Class DF - 63"" / T-6 (Locobase 8737)

Data from SP Menke All-Time Steam Loco Diagrams and SP 1 - 1898 Pacific Division Locomotive Classes supplied in May 2005 by Allen tanley from his extensive collection.

Locobase 8736 shows the version of this home-built class as fitted with 57"drivers. The Sacramento Shops turned out more 63" engines. In 1896, their road numbers included 1765-67, 1770-1772, 1775-1778, 1780-1781, and 1783. All were later renumbered and the Menke diagram shows only the 57" version because that was the only surviving engine in 1930.

Class DH / T-8a (Locobase 8738)

Data from SP Menke All-Time Steam Loco Diagrams and SP 1 - 1898 Pacific Division Locomotive Classes supplied in May 2005 by Allen Stanley from his extensive collection.

As delivered, these locomotives appear to have had the heating surface areas shown in the specifications. The Menke book shows two versions, the T-8a outlined above, and T-8, which had 206 tubes, a total heating surface of 1,343 sq ft including a firebox heating surface of 113 sq ft, and higher weights of 99,000 lb on the drivers and 121,800 overall. There are several explanations for the difference, but Locobase is unable to sort them out.

One of the locomotives was originally credited to the Central Pacific and the other 9 to the Southern Pacific's Pacific Division.

Class DI / T-9 (Locobase 8739)

Data from SP Menke All-Time Steam Loco Diagrams and SP 1 - 1898 Pacific Division Locomotive Classes supplied in May 2005 by Allen Stanley from his extensive collection.

In the Pacific Division book, which has a closing date of August 1896, the class is shown with 56" drivers (49" centers) while the Menke diagrams show 57" drivers. In any case, the weights are identical. Two of the class -- later designated T-9b and bearing the numbers 2170 & 2172, had 170-psi boilers with 222 2" tubes measuring 11 ft 10 7/8" that, together with a firebox area of 124 sq ft, amounted to 1,491 sq ft of total heating surface. They put 92,000 lb on their drivers and had a total engine weight of 116,650 lb.

Class DJ / T-10 (Locobase 8740)

Data from SP Menke All-Time Steam Loco Diagrams and SP 1 - 1898 Pacific Division Locomotive Classes supplied in May 2005 by Allen Stanley from his extensive collection.

Whenever these Rhodies came on the Central Pacific and Southern Pacific rails, they were different from most of the Ten-wheelers then being purchased by the SP Lines. Unlike the others, these engines had their firebox dropped deep between the last two axles, spreading them out more than 3 feet. The firebox itself encompassed more area.

Class DW / T-23 (Locobase 8745)

Data from SP Menke All-Time Steam Loco Diagrams and supplied in May 2005 by Allen Stanley from his extensive collection. Works numbers were 22692, 22719-20 in August 1903; 22815, 22829, 22837 in September; 22986-87, 23046, 23077in October.

These had the wider fireboxes of the post-Turn-of-the-Century Ten-wheeler. They were later superheated by the shops.

Half the class was scrapped in the early '50s while the others were sold to FC del Pacifico in December 1951 and operated for that railway for another 4 years.

Class DZ-1 / T-26 (Locobase 8746)

Data from SP Menke All-Time Steam Loco Diagrams supplied in May 2005 by Allen Stanley from his extensive collection. Works numbers were 19900-19903 in December 1901; 19965-66, 19987 in January 1902; and 20001-02, 20023-20031 in February 1902.

Baldwin supplied these as 4-cylinder Vauclain compounds with 15 1/2" HP and 26" LP cylinders and a 28" stroke.

The class was simpled and superheated. About half were scrapped in the 1930s with several others going to the Northwestern Pacific on lease in the postwar 1940s. All had been scrapped by 1950.

Class Eureka / T-55 (Locobase 8176)

Data from the NWP 10 - 1950 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive collection. See the excellent roster on http://ncespee.railfan.net/rosters/oldnwptxtros.html, access 9 February 2007.

This was first SF & NP's #15, bearing the name Eureka. As the Northwestern Pacific's 102, it operated until 1929.

Class Skaggs / T-57 (Locobase 8175)

Data from the NWP 10 - 1950 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive collection. See the excellent roster on http://ncespee.railfan.net/rosters/oldnwptxtros.html, access 9 February 2007.

The SF & NP took possession of this Ten-wheeler (works #4212) as the Skaggs, road number #18. Renumbered by the Northwestern Pacific after its acquisition of the SF & NP in 1907, the 101 operated only until 1928.

Class T-16 (Locobase 11131)

Data from Schenectady Locomotive Works, Illustrated Catalogue of Simple and Compound Locomotives (Philadelphia: J B Lippincott, 1897), pp. 102-103.

Class T-22 (Locobase 8744)

Data from SP Menke All-Time Steam Loco Diagrams and SP 1 - 1898 Pacific Division Locomotive Classes supplied in May 2005 by Allen Stanley from his extensive collection.

Piecing together the information from a variety of sources, we find that this locomotive came on the Central Pacific in 1868. At the time, it was CPRR #68 and named PEOQUOP. Later it was designated DV and numbered 1536 and still later redesignated T-22 and numbered 2001. Locobase suspects that somewhere along the line, the original boiler was replaced. It later operated on the SP's Tillamook branch in Oregon.

Class T-25 (Locobase 4134)

Data from SP Menke All-Time Steam Loco Diagrams and supplied in May 2005 by Allen Stanley from his extensive collection.

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 were 2632-2639 (March 1901).

Class T-27 (Locobase 8674)

Data from T&NO 3 - 1932 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive collection.

This set of Ten-wheelers was delivered from both Cooke (Paterson, NJ) and Schenectady in March, July, and August 1897. They apparently were never superheated.

Class T-28 (Locobase 4212)

Data from Railroad Age Gazette,18 September 1908. Works numbers were 31611 in August 1907; 31649, 31696-31698, 31733, 31751-31752, 31781, 31792-31795, 31796,31838 in September; 31848, 31882-31883, 31946, 31979 in October; 32251 in November; 33744-33747 in September 1909; 36161-36162 in February 1911; 36186-36189 in March; 38221-38224 in August 1912; and 38250-38255 in September.

Built by Baldwin (30 for the Espee) and Brooks (12 for the Espee) in 1908 & 1911. These ten-wheelers ruled the mountains, according to the RAG article that profiled them. Running between Sacramento and Sparks, Nevada, the railroad offered adverse grades of 2-2.2% eastbound and 2% westbound. A typical train for this class consisted of a maximum of 7 cars weighing a total of 350-375 tons. The view from such a train must have been spectacular and the customer had plenty of time to take it in -- the booked trip average was 15.5 mph eastbound, 19.5 mph westbound with the Overland Limited.

"The new engines are performing very satisfactory service, " said RAG. "They ride easily, take the curves very steadily, and are good steamers." Indeed they were and the Espee took delivery of more of the same for the next 4 years, including 12 for the Texas & Louisiana affiliate.

The class only entered retirement beginning in 1949 and even then, the Espee sold some to its Mexican affiliate FC del Pacifico.

Class T-28 - superheated (Locobase 8672)

Data from SP 7 - 1951 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive collection.

Locobase 4212 describes these mountain-climbing Ten-wheelers as they came into service in 1907. A few engines were superheated with higher-pressure boilers and given 69" drivers and redesignated T-29 to reflect the increased tractive effort. Several years later, the 63" drivers were restored, which increased tractive effort still more, but triggered a reversion of designation to T-28 (probably to avoid confusion with other T-38s). See Locobase 8673 for the Texas & New Orleans variant with 69" drivers.

Class T-28 T & NO - superheated (Locobase 8673)

Data from SP 7 - 1951 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive collection.

Locobase 4212 describes these mountain-climbing Ten-wheelers as they came into service in 1907. A few engines were superheated with higher-pressure boilers and given 69" drivers and redesignated T-29 to reflect the increased tractive effort. Several years later, the 63" drivers were restored, which increased tractive effort still more, but triggered a reversion of designation to T-28 (probably to avoid confusion with other T-38s). See Locobase 8673 for the Texas & New Orleans variant with 69" drivers.

Class T-3 (Locobase 8735)

Data from SP Menke All-Time Steam Loco Diagrams and SP 1 - 1898 Pacific Division Locomotive Classes supplied in May 2005 by Allen tanley from his extensive collection.

This class of passenger Ten-wheelers used the same boiler and firebox as the Cooke freighters described in Locobase 3155, but the 1898 book indicates that they were delivered as compounds (20" HP, 29" LP with a common stroke of 26"). They were later rebuilt to the simple-expansion version shown in the specs.

Class T-31 (Locobase 3164)

Information from William P Schneider article featured on the San Diego Railroad Museum's website. http://www.sdrm.org/roster/steam/s-2353/ (confirmed 4 Jan 2003) and SP Menke All Time Steam Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive collection. Works numbers were 38221-38224 in August 1912, 38250-38255 in September.

This class of Ten-Wheelers served mostly local and secondary passenger runs in the Pacific Lines area of the Southern Pacific. Unlike earlier classes, these were delivered with superheaters. They were delivered with a working pressure of 200 psi, which was later increased to 210 psi.

Handy in size and possessing a healthy tractive effort, the T-31s continued in passenger service into the 1940s. The class leader later transferred to San Francisco for freight and switching service. After its retirement, it stood for 29 years in the Mid-Winter Fairgrounds in Imperial. Restoration to service began in 1987 and the engine's first run came in 1996.

Class T-32 (Locobase 8747)

Data from SP Menke All Time Steam Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive collection.

Sharing the boiler design with Baldwin's T-31s (Locobase 3164), this set consisted of 8 Brooks engines from 1913 and 14 from the SP shops in 1917-1920. They rolled on taller drivers and weighed a bit more, but were otherwise very similar. All of them served into the 1950s with the last engine retiring in 1957.

Class T-36 (Locobase 8749)

Data from SP Menke All Time Steam Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive collection.

Manchester was a small builder that was absorbed by the American Locomotive Company at about the same time as it produced this trio of mixed-traffic Ten-wheelers for the EP & SW. When that railway came under the Southern Pacific, they were given the numbers shown in the specs. The first retired in 1934, but the last lingered until 1947.

Class T-37 (Locobase 8750)

Data from SP Menke All Time Steam Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive collection.

Although delivered to the EP & SW only a year after the Manchester trio, these were bigger engines with a different mission. The taller drivers bespoke a strictly passenger role and stretched the steam provided by a smallish boiler to the larger cylinders. A wide grate now lay over the drivers, not between them. Once in service for a few years, the design was revised by the installation of a superheater; it's this manifestation that's shown in the specs.

Given that the two carried on into the early 1950s, they were well-suited to fill a niche.

Class T-40 (Locobase 8751)

Data from the SP 7 - 1951 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive collection. Roster information from http://www.urbaneagle.com/nco/nco-loco-roster.html, accessed 3 September 2007.

This was a single rebuilding project in which Sacramento shops took a T-32 and modified with superheater and other goodies. According to the Espee railfan site -- http://espee.railfan.net/sp_steam_t-40.html, accessed 16 Sept 2007 -- the T-40 remained unique as plans to upgrade other members of the class were not carried out. On the other hand, the T-32s shown in the plan books had all the same dimensions and areas, so perhaps only one was dubbed T-40?

Class T-44 (Locobase 8698)

Data from the SP 7 - 1951 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive collection. Roster information from http://www.urbaneagle.com/nco/nco-loco-roster.html, accessed 3 September 2007. Works numbers were 31445 in January 1907

This railway didn't shrink from a challenge as its nickname - the Sierra Nevada Route -- and its other nickname -- the Narrow, Crooked & Ornery -- will suggest. It connected Reno, Nev with Oregon. Aimed to reach The Dalles in Oregon, the last spike went down in Lakeview, Ore, 241 miles from Reno.

This little Ten-wheeler from Baldwin had a small grate and firebox for the boiler it was expected to heat. But it must have satisfied requirements because it survived the transformation of the N-C-O into a standard-gauge branch of the SP in 1926-29 and only went out of service in 1955. At that point, it went on display in Carson City, NV and later in Sparks, NV.

Class T-44 / 10 (Locobase 8701)

Data from SP Menke All Time Steam Locomotive diagrams supplied in May 2005 by Allen Stanley from his extensive collection. Roster information from http://www.urbaneagle.com/nco/nco-loco-roster.html, accessed 3 September 2007. Works numbers were 34528 in April 1910 and 37394-37395 in December 1911.

Maintaining the same power dimensions as found in the earlier N-C-O 4-6-0s, this trio had fewer, but longer tubes and a slightly larger firebox. Both 10 & 11 were sold off to the narrow-gauge Pacific Coast Railway in 1929 after the N-C-O's slim alignment had been widened to standard gauge. 111 was scrapped in 1948, but Oahu Railway & Land Company bought 112 and operated it until 1950.

12 was renumbered 18 and put to work on the SP's Carson & Colorado. After its retirement in 1955, it was put on display in Bishop, Calif.

Class T-44 / 9 (Locobase 8699)

Data from the SP 7 - 1951 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive collection. Roster information from http://www.urbaneagle.com/nco/nco-loco-roster.html, accessed 3 September 2007. Works number was 34528 in April 1910.

Baldwin's second Ten-wheeler for the N-C-O repeated the power dimensions, but put more weight on the wheels. Number 9 ran for the narrow-gauge SP until it was sold to the Pacific Coast Railroad. The PCR was abandoned in 194, at which point the 9 was sold to the Oahu Railway as their #110.

It was displayed in Laws, CA at the Laws Railroad Museum.

Class T-45 - rebuilt from M-44 (Locobase 8761)

Data from SP Menke All Time Steam Locomotive diagrams supplied in May 2005 by Allen Stanley from his extensive collection.

Class T-45 / 22 (Locobase 8702)

Data from SP Menke All Time Steam Locomotive diagrams supplied in May 2005 by Allen Stanley from his extensive collection.

Class T-51 / 14 (Locobase 8700)

Data from SP Menke All Time Steam Locomotive diagrams supplied in May 2005 by Allen Stanley from his extensive collection.

Class T-56 (Locobase 8752)

Data from SP Menke All Time Steam Locomotive diagrams supplied in May 2005 by Allen Stanley from his extensive collection. Works number was 52884.

Locobase is a little surprised that so small a locomotive would have been built as late as it was by a major builder. The SD & S was merged with the San Diego & Arizona in 1917 and this engine, then numbered 23, became 12 in 1920. It later served under that number for both the Mexicali & Golfo and the Southern Pacific before being scrapped in October 1947.

Specifications
Class103 / T-43105 / T-57109 / T-57111 / T-4612 / T-44130 / T-47 & T-48136 / T-49139 / T-51142 / T-51178178517918180 / T-57182 / T-572020 / T-57201 / T-3821 / 1022 / 1122 / T-44320 / T-394 / T-52527 / T-589 / T-58DB / T-2DC / T-1 / T-25DF - 57"" / T-6DF - 63"" / T-6DH / T-8aDI / T-9DJ / T-10DW / T-23DZ-1 / T-26Eureka / T-55Skaggs / T-57T-16T-22T-25T-27T-28T-28 - superheatedT-28 T & NO - superheatedT-3T-31T-32T-36T-37T-40T-44T-44 / 10T-44 / 9T-45 - rebuilt from M-44T-45 / 22T-51 / 14T-56
Locobase ID81778178818081818762818281848185819181871112281888174818981908170727672487274727581797249818677017277727831963155873687378738873987408745874681768175111318744413486744212867286738735316487478749875087518698870186998761870287008752
RailroadNorthwestern Pacific (SP)Northwestern Pacific (SP)California Northwestern (SP)Northwestern Pacific (SP)Nevada-California-Oregon (SP)Northwestern Pacific (SP)Northwestern Pacific (SP)Northwestern Pacific (SP)Northwestern Pacific (SP)Northwestern Pacific (SP)Central Pacific (SP)Las Vegas & Tonopah (SP)North Pacific Coast (SP)Northwestern Pacific (SP)Northwestern Pacific (SP)South Pacific Coast (SP)San Diego & Arizona (SP)San Antonio & Aransas Pass (SP)San Diego & Southeastern (SP)San Diego & Southeastern (SP)San Francisco & North Pacific (SP)San Antonio & Aransas Pass (SP)Las Vegas & Tonopah (SP)Florence & Cripple Creek (SP)Las Vegas & Tonopah (SP)Las Vegas & Tonopah (SP)Southern Pacific (SP)Southern Pacific (SP)Southern Pacific (SP)Southern Pacific (SP)Southern Pacific (SP)Southern Pacific (SP)Southern Pacific (SP)Southern Pacific (SP)Southern Pacific (SP)San Francisco & North Pacific (SP)San Francisco & North Pacific (SP)Texas & New Orleans (SP)Southern Pacific (SP)Southern Pacific (SP)Texas & New Orleans (SP)Southern Pacific (SP)Southern Pacific (SP)Texas & New Orleans (SP)Southern Pacific (SP)Southern Pacific (SP)Southern Pacific (SP)El Paso & Southwestern (SP)El Paso & Southwestern (SP)Southern Pacific (SP)Nevada-California-Oregon (SP)Nevada-California-Oregon (SP)Nevada-California-Oregon (SP)Southern Pacific (SP)Southern Pacific (SP)Southern Pacific (SP)San Diego & Southeastern (SP)
Whyte4-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-04-6-0
Road Numbers103-104105-106109111-11412 / 18130-135136-138139-141142-143178178517918 / 145 / 95180-181182-18420 / 21 / 144 / 9420201-208 / 369-3761022 / 1122-23 / 107-108320 / 3004-10 / 170-17222-237 / 249-111794-1807 / 2221-22341808-51 / 2235-22731762-64, 68-69, 73-74 + 21746-1755 / 2174-21831694-1713 / 2154-21731726-1745 / 2134-21532301-23102283-230015 / 102101642-65620012274-2281377-3862311-2352, 388-3992311-2352388-3992214-22202353-23622363-23842102-21042105-210623714 / 810-1291214-16, 1723 / 12
GaugeStdStdStdStd3'StdStdStdStdStdStdStd3'StdStd3'StdStdStdStdStdStdStd3'StdStdStdStdStdStdStdStdStdStdStdStdStdStdStdStdStdStdStdStdStdStdStdStdStdStd3'3'3'3'3'3'Std
BuilderRichmondAlcoBurnham, Williams & CoAlcoBaldwinAlcoAlcoAlcoBaldwinBurnham, Williams & CoSchenectadyAlcoBrooksAlcoBaldwinBurnham, Parry, Williams & CoBurnham, Williams & CoBurnham, Williams & CoSchenectadyRogersBurnham, Williams & CoBurnham, Williams & CoBurnham, Williams & CoSchenectadyBurnham, Williams & CoBurnham, Williams & CoCookeCookeSPSPSchenectadySchenectadyRhode IslandBurnham, Williams & CoSPGrantRogersSchenectadyMcKay & AldusCookeseveralBurnham, Williams & CoSPT & NOSchenectadyBaldwinseveralAlco-ManchesterAlco-Rhode IslandSPBurnham, Williams & CoBaldwinBaldwinAlco-Pittsburgh
Year1901190119001908191219101914191419221906189019061899191419221887191919071887188119041907190718991921192118931895189518951895189518951903190118881889189018681901189719071913191318951912191319021903192819071910190919211913
Valve GearWalschaertWalschaertStephensonStephensonStephensonStephensonStephensonStephensonStephensonWalschaertStephensonWalschaertStephensonWalschaertWalschaertStephensonWalschaertStephensonStephensonStephensonWalschaertWalschaertStephensonStephensonWalschaertWalschaertStephensonStephensonStephensonStephensonStephensonStephensonStephensonStephensonStephensonStephensonStephensonStephensonStephensonStephensonStephensonStephensonStephensonWalschaertStephensonWalschaertWalschaertStephensonStephensonStephensonStephensonStephensonStephensonStephensonStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase12.33'11.75'12'12'9'14.83'14.83'14.83'14.83'12.67'12.17'14.83'10.67'14.83'14.83'12.54'12.67'15'15.83'14'12'15'14.33' 9.75'14.33'14.33'12.17'12.17'12'12'11'11'14.42'13.67'13.67'13.50'13.33'13.83'11'13.67'12.17'13.83'13.83'13.83'12.18'13.83'13.83'14.83'13'13.83' 9.02'9' 9.02'12.12'12.50'12.50'14'
Engine Wheelbase22.67'21.92'23.12'22.58'18.24'25.92'25.92'25.92'25.92'24.71'22.67'25.75'20.33'26'26'21.92'24'23.17'24'23.83'23.12'26.92'25.92'18.17'25.92'25.92'22.83'22.67'25.42'25.42'20.83'20.83'24.67'25'25'24.50'23.92'24'21.17'24.50'22.67'25.83'25.83'25.83'22.67'25.83'25.83'25.83'24.60'25.83'18.28'18.24'18.37'21.29'21.83'21.83'24.25'
Ratio of driving wheelbase to overall engine wheebase 0.54 0.54 0.52 0.53 0.49 0.57 0.57 0.57 0.57 0.51 0.54 0.58 0.52 0.57 0.57 0.57 0.53 0.65 0.66 0.59 0.52 0.56 0.55 0.54 0.55 0.55 0.53 0.54 0.47 0.47 0.53 0.53 0.58 0.55 0.55 0.55 0.56 0.58 0.52 0.56 0.54 0.54 0.54 0.54 0.54 0.54 0.54 0.57 0.53 0.54 0.49 0.49 0.49 0.57 0.57 0.57 0.58
Overall Wheelbase (engine & tender)47.54'41.75'47.80'45.75'52.17'58.02'58.02'47.80'
Axle Loading (Maximum Weight per Axle)52800 lbs37330 lbs55500 lbs55997 lbs55500 lbs62800 lbs68800 lbs19300 lbs24300 lbs
Weight on Drivers92260 lbs108000 lbs105150 lbs109600 lbs68000 lbs130400 lbs135500 lbs137720 lbs137720 lbs141400 lbs99500 lbs142480 lbs61300 lbs148500 lbs148500 lbs59200 lbs135000 lbs93500 lbs73400 lbs73400 lbs110000 lbs110900 lbs142000 lbs69000 lbs143300 lbs143300 lbs104900 lbs112050 lbs78700 lbs77650 lbs87500 lbs83100 lbs85700 lbs156000 lbs155400 lbs78000 lbs73100 lbs73000 lbs93700 lbs134000 lbs112000 lbs162800 lbs162000 lbs162680 lbs113000 lbs162000 lbs173900 lbs118000 lbs146000 lbs197300 lbs62000 lbs68000 lbs70750 lbs56700 lbs71000 lbs68200 lbs95400 lbs
Engine Weight120260 lbs134000 lbs130300 lbs137800 lbs87150 lbs173000 lbs180000 lbs181670 lbs181670 lbs169800 lbs130300 lbs189280 lbs79400 lbs196500 lbs196500 lbs74900 lbs162000 lbs126000 lbs97600 lbs97600 lbs136300 lbs150000 lbs186750 lbs85000 lbs189800 lbs189800 lbs130750 lbs142350 lbs105100 lbs108400 lbs106200 lbs101500 lbs112300 lbs196200 lbs198000 lbs102000 lbs94400 lbs95000 lbs117500 lbs173000 lbs142350 lbs207000 lbs208000 lbs206720 lbs142600 lbs208000 lbs218500 lbs153000 lbs187100 lbs242500 lbs81000 lbs87150 lbs87150 lbs73700 lbs89400 lbs83900 lbs123400 lbs
Tender Light Weight102360 lbs70000 lbs105200 lbs57600 lbs142000 lbs142000 lbs89900 lbs
Total Engine and Tender Weight176800 lbs176800 lbs176800 lbs176800 lbs87150 lbs176800 lbs176800 lbs176800 lbs176800 lbs176800 lbs240300 lbs176800 lbs176800 lbs176800 lbs176800 lbs176800 lbs0228360 lbs00206300 lbs255200 lbs176800 lbs142600 lbs0000248800 lbs248800 lbs248800 lbs248800 lbs248800 lbs0340000 lbs176800 lbs176800 lbs240300 lbs00348720 lbs349000 lbs350000 lbs348720 lbs0297900 lbs308400 lbs299133 lbs299133 lbs176800 lbs176800 lbs176800 lbs176800 lbs73700 lbs89400 lbs83900 lbs89400 lbs
Tender Water Capacity4000 gals3500 gals5000 gals6000 gals2500 gals3400 gals7000 gals7000 gals12000 gals
Tender Fuel Capacity (oil/coal)1950 gals gals gals gals2000 gals gals7 tons tons tons tons tons tons tons tons tons tons tons tons tons tons tons tons tons tons2940 gals2940 gals gals gals4000 gals gals gals gals gals gals gals gals gals gals gals gals
Minimum weight per yard of rail on which locomotive could run51.26 lb rail60 lb rail58 lb rail60.89 lb rail37.78 lb rail72.44 lb rail75.28 lb rail76.51 lb rail77 lb rail79 lb rail55 lb rail79.16 lb rail34.06 lb rail82.50 lb rail83 lb rail32.89 lb rail75 lb rail52 lb rail40.78 lb rail40.78 lb rail61 lb rail62 lb rail79 lb rail38.33 lb rail80 lb rail80 lb rail58.28 lb rail62.25 lb rail43.72 lb rail43.14 lb rail48.61 lb rail46.17 lb rail47.61 lb rail87 lb rail86 lb rail43.33 lb rail40.61 lb rail41 lb rail52.06 lb rail74.44 lb rail62.22 lb rail90 lb rail90 lb rail90.38 lb rail62.78 lb rail90 lb rail96.61 lb rail65.56 lb rail81.11 lb rail109.61 lb rail34 lb rail38 lb rail39 lb rail31.50 lb rail39.44 lb rail37.89 lb rail53 lb rail
Geometry Relating to Tractive Effort
Driver Diameter57"57"57"57"44"63"63"63"63"63"69"63"55"57"57"50"63"62"57"57"57"56"57"42"57"63"63"63"57"63"57"56"57"63"69"55"57"55"57"69"63.50"63"63"69"69"63"69"63"70"69"44"44"44"45"42"51"57"
Boiler Pressure180 psi180 psi180 psi180 psi180 psi200 psi200 psi200 psi200 psi200 psi180 psi200 psi170 psi200 psi200 psi140 psi190 psi180 psi150 psi150 psi180 psi200 psi190 psi180 psi200 psi200 psi160 psi180 psi135 psi135 psi160 psi160 psi160 psi210 psi200 psi140 psi140 psi140 psi160 psi200 psi180 psi190 psi210 psi210 psi180 psi210 psi210 psi190 psi175 psi210 psi180 psi180 psi180 psi140 psi180 psi145 psi170 psi
Cylinders (dia x stroke)18" x 24"19" x 26"19" x 26"19" x 26"16" x 20"20" x 28"20" x 28"20" x 28"20" x 28"21" x 28"20" x 26" (1)20" x 28"16" x 22"21" x 28"21" x 28"16" x 22"21" x 28"19" x 24"18" x 24"18" x 24"19" x 26"18" x 26"21" x 26"16" x 20"21" x 26"21" x 26"19" x 24"20" x 26"18" x 30"18" x 30"18" x 24"18" x 24"18" x 24"21" x 28"21" x 28"18" x 24"16" x 24"18" x 24"18" x 24"20" x 28"20" x 26"22" x 28"22" x 28"22" x 28"20" x 26"22" x 28"23" x 28"20" x 26"24" x 28"23" x 28"16" x 20"16" x 20"16" x 20"14.5" x 18"16" x 20"16" x 20"18" x 24"
Tractive Effort20872 lbs25194 lbs25194 lbs25194 lbs17804 lbs30222 lbs30222 lbs30222 lbs30222 lbs33320 lbs15628 lbs30222 lbs14797 lbs36827 lbs36827 lbs13404 lbs31654 lbs21381 lbs17394 lbs17394 lbs25194 lbs25573 lbs32487 lbs18651 lbs34197 lbs30940 lbs18703 lbs25257 lbs19568 lbs17704 lbs18553 lbs18885 lbs18553 lbs34986 lbs30423 lbs16824 lbs12827 lbs16824 lbs18553 lbs27594 lbs25058 lbs34740 lbs38397 lbs35058 lbs23061 lbs38397 lbs38318 lbs26660 lbs34272 lbs38318 lbs17804 lbs17804 lbs17804 lbs10008 lbs18651 lbs12373 lbs19713 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.42 4.29 4.17 4.35 3.82 4.31 4.48 4.56 4.56 4.24 6.37 4.71 4.14 4.03 4.03 4.42 4.26 4.37 4.22 4.22 4.37 4.34 4.37 3.70 4.19 4.63 5.61 4.44 4.02 4.39 4.72 4.40 4.62 4.46 5.11 4.64 5.70 4.34 5.05 4.86 4.47 4.69 4.22 4.64 4.90 4.22 4.54 4.43 4.26 5.15 3.48 3.82 3.97 5.67 3.81 5.51 4.84
Heating Ability
Firebox Area137 sq. ft144 sq. ft150 sq. ft158 sq. ft70 sq. ft173.50 sq. ft175 sq. ft174 sq. ft174 sq. ft192 sq. ft137.10 sq. ft174 sq. ft110.60 sq. ft178 sq. ft178 sq. ft87 sq. ft192 sq. ft133 sq. ft150 sq. ft144 sq. ft150 sq. ft156 sq. ft140.60 sq. ft86.88 sq. ft145 sq. ft145 sq. ft141 sq. ft147 sq. ft136 sq. ft136 sq. ft119 sq. ft119 sq. ft142 sq. ft158 sq. ft191 sq. ft108 sq. ft110 sq. ft125.90 sq. ft128 sq. ft202 sq. ft162 sq. ft206 sq. ft230 sq. ft206 sq. ft147 sq. ft230 sq. ft230 sq. ft194 sq. ft153 sq. ft230 sq. ft70 sq. ft70 sq. ft66 sq. ft65 sq. ft80 sq. ft85 sq. ft165 sq. ft
Grate Area23 sq. ft24.25 sq. ft24.75 sq. ft25 sq. ft11.80 sq. ft30.20 sq. ft28.70 sq. ft28.70 sq. ft28.70 sq. ft35 sq. ft28.50 sq. ft50 sq. ft16 sq. ft50.50 sq. ft50.50 sq. ft13.12 sq. ft34.90 sq. ft17 sq. ft16.50 sq. ft16.40 sq. ft24.75 sq. ft20.70 sq. ft42.50 sq. ft14.08 sq. ft42.50 sq. ft42.50 sq. ft28 sq. ft28 sq. ft24 sq. ft24 sq. ft24.50 sq. ft27.40 sq. ft19 sq. ft28 sq. ft32.60 sq. ft16.90 sq. ft16 sq. ft17.30 sq. ft25 sq. ft30.22 sq. ft28 sq. ft32.10 sq. ft32.10 sq. ft32.10 sq. ft28 sq. ft32 sq. ft32 sq. ft30.90 sq. ft48.90 sq. ft32 sq. ft11.80 sq. ft11.80 sq. ft11.80 sq. ft 8.70 sq. ft14.40 sq. ft14.06 sq. ft17 sq. ft
Evaporative Heating Surface1591 sq. ft1874 sq. ft1887 sq. ft1923 sq. ft1216 sq. ft2762 sq. ft2627 sq. ft2032 sq. ft2032 sq. ft1873 sq. ft1742 sq. ft2344 sq. ft1081 sq. ft2282 sq. ft2282 sq. ft825 sq. ft1399 sq. ft1713 sq. ft1425 sq. ft1470 sq. ft1812 sq. ft2401 sq. ft2599 sq. ft1124 sq. ft1606 sq. ft1606 sq. ft1622 sq. ft1884 sq. ft1303 sq. ft1303 sq. ft1467 sq. ft1402 sq. ft1343 sq. ft1981 sq. ft1911 sq. ft1523 sq. ft1342 sq. ft1469 sq. ft1494 sq. ft2562 sq. ft1898 sq. ft2994 sq. ft2427 sq. ft2324 sq. ft1884 sq. ft2427 sq. ft2427 sq. ft2132 sq. ft2107 sq. ft2427 sq. ft1210 sq. ft1286 sq. ft1206 sq. ft862 sq. ft1069 sq. ft823 sq. ft1528 sq. ft
Superheating Surface0408 sq. ft408 sq. ft461 sq. ft549 sq. ft494 sq. ft494 sq. ft402 sq. ft478 sq. ft478 sq. ft384 sq. ft369 sq. ft467 sq. ft464 sq. ft467 sq. ft467 sq. ft390 sq. ft467 sq. ft000
Combined Heating Surface1591 sq. ft1874 sq. ft1887 sq. ft1923 sq. ft1216 sq. ft2762 sq. ft2627 sq. ft2440 sq. ft2440 sq. ft2334 sq. ft1742 sq. ft2893 sq. ft1081 sq. ft2776 sq. ft2776 sq. ft825 sq. ft1801 sq. ft1713 sq. ft1425 sq. ft1470 sq. ft1812 sq. ft2401 sq. ft2599 sq. ft1124 sq. ft2084 sq. ft2084 sq. ft1622 sq. ft1884 sq. ft1303 sq. ft1303 sq. ft1467 sq. ft1402 sq. ft1343 sq. ft2365 sq. ft2280 sq. ft1523 sq. ft1342 sq. ft1469 sq. ft1494 sq. ft2562 sq. ft1898 sq. ft2994 sq. ft2894 sq. ft2788 sq. ft1884 sq. ft2894 sq. ft2894 sq. ft2132 sq. ft2497 sq. ft2894 sq. ft1210 sq. ft1286 sq. ft1206 sq. ft862 sq. ft1069 sq. ft823 sq. ft1528 sq. ft
Evaporative Heating Surface/Cylinder Volume225.08219.64221.16225.38261.27271.29258.03199.59199.59166.86368.53230.23211.15203.30203.30161.14124.64217.50201.60207.96212.37313.54249.36241.50154.08154.08205.95199.28147.47147.47207.54198.34190.00176.49170.25215.46240.28207.82211.36251.64200.76243.04197.01188.65199.28197.01180.25225.52143.72180.25259.98276.31259.12250.57229.68176.83216.17
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation4140436544554500212460405740574057407000513010000272010100101001836.8066313060247524604455414080752534.408500850044805040324032403920438430405880652023662240242240006044504060996741674150406720672058718557.506720212421242124121825922038.702890
Same as above plus superheater percentage41404365445545002124604057406699.8067168400513011897.68272011897.33119181836.8080903060247524604455414080752534.40104551045544805040324032403920438430406821756323662240242240006044504060997828.787862.89504077957804.4058719894.077804.40212421242124121825922038.702890
Same as above but substitute firebox area for grate area2466025920270002844012600347003500040619.0240716460802467841403.941880241935.1642008121804450623940225002160027000312002671415638.4035670356702256026460183601836019040190402272038489443121512015400176262048040400291603914056094.0950459.66264605602856094.093686030956.9256094.091260012600118809100144001232528050
Power L15506.005198.8852855437.374441.407486.387223.3913559.851356013063505616820.894973.6312895.01128952871.301062356164384.724414.965135775457184218.9412091133644963.765235.862878.313181.294434.044218.934414.6912232126783745.474505.5338104588.878069.475456.75651713925.4314761.575734.511392513954.266545.998887.6113954.264424464043563622.893976.913304.885376
Power MT394.71318.38332.42328.12431.98379.71352.58651.20651.20611.01336.08780.82536.62574.32574.31320.78520.44397.26395.09397.82308.75462.43266.32404.40558.05616.80312.96309.05241.89270.97335.16335.78340.70518.59539.58317.59407.65345.19323.91398.29322.23264.76568.52600.14335.64568.51530.72366.90402.61467.77471.93451.30407.21422.60370.46320.50372.71

Photos

Reference

Credits

Introduction and specifications provided by Steve Llanso of Sweat House Media.