According to the New York Locomotive Works records compiled by J F Webber, this locomotive was delivered either to the KC, W & NW as their #4 (works #287) or the A & L as #2 (works #197). Locobase chose the latter origin for the following reasons:
1) The 1924 MP book showed an identical engine, also bought in 1910, for which the original builder was not supplied, and
2) Webber lists the A & L #1 as immediately preceding the one we do know, but does not give a wheel arrangement.
The A & L began life in 1876-1877 as the narrow-gauge Washington & Hope Railway, which connected with the St Louis, Iron Mountain & Southern near St Louis. Reorganized and now tasked with completing a line to Monroe, La, the A & L was converted to standard gauge in 1882. It later was ruled to be a branch line of the St L, IM & S.
NB: The direct heating surface (including the firebox heating surface) is an estimate calculated by subtracting the calculated tube heating surface from the reported total evaporative heating surface.
Another of the grandly named railroads that blossomed across the Midwest in the late 1800s, the D M & A never even entered service as an independent railway. The Missouri Pacific bought the line in 1887. #4 was named Chatauqua, # Crowell, and #6 Sumner.
When the Reynolds & Henry Construction Company applied to Baldwin to buy a new locomotive for the soon-to-open Ouachita Valley Route, the Philadelphia builder pulled the design just recently used for the Rio Grande & Eagle Pass (Locobase 11592) and copied it. to the last quarter inch of tube length.
The OVR didn't remain independent for long before being sold to the St Louis, Iron Mountain & Southern (a principal component of the Missouri Pacific) on 13 December 1893. Its route opened the way to Houston.
These were the first locomotives bought for the StLB & M, an eastern Texas railroad that opened its first section, 142 miles between Robstown and Brownsville on 4 July 1904. Extending north toward Houston, the StLB & M owned and operated 502 miles of main lin by 1912.
926 was scrapped after a relatively short career in April 1919 before the other two were superheated; see Locobase 7764.
See more about the WC & W in Locobase 12736. This Illinois railroad apparently needed some passenger power and bought these two Eight-wheelers from Baldwin. After the WC & W's demise in 1927, its successor Chester & Mount Vernon took over both.
This was among the first locomotives for this Texas railroad, which first saw life in 1873 as the consolidation of the International Railroad Company and the Houston & Great Northern. Through financial panics, a term of ownership by the noted (and notorious) speculator and baron Jay Gould, bankruptcies and the like, the I & GN extended its reach from its original core of the Houston-Palestine and Houston-East Columbia lines.
By 1911, the I & GN had grown to 1,106 miles and served most of the Lone Star State. In 1923, the Missouri Pacific sought to block the Missouri-Kansas-Texas by arranging for the New Orleans, Texas & Mexico to buy the I & GN. A year later, the MP bought the NO, T & M and the merger was completed.
Small Eight-wheelers that were among the earliest St L, IM & S engines. G M Best's compilation of Grant locomotives gives us the original builder's number for 20, but cannot help us with any others because of unavoidable gaps in information. See Locobase 10059 for a passenger-engine variant.
Fortunately for future railroad historians and ferro-equinologists (and database compilers), the 1924 edition of the Missouri Pacific diagrams included several of Eight-wheelers from well before the turn of the century.
Among the earliest of the MoPac predecessors was the St L, IM & S and these were among its first locomotives. Later on, the MP retained one of them long enough to renumber it twice.
Fortunately for future railroad historians and ferro-equinologists (and database compilers), the 1924 edition of the Missouri Pacific diagrams included several of Eight-wheelers from well before the turn of the century.
Of the two pages in the book describing this design, the first example was marked "Scrapped 10/24" on the original document. The locomotives came from the heyday of the 4-4-0 and still featured the one steam dome over the firebox and one over the center of the boiler as well as a very straight and tall stack. Rogers delivered the locomotive that would be 2502 in 1880, the other 4 the very next year.
In the same year that Grant delivered the mixed-traffic Eight-wheeler shown in 10058, the Paterson, NJ builder supplied similar locomotives with slightly smaller grates and taller drivers as passenger engines.
Although apparently similar to the Baldwins purchased at the same time (Locobase 10064), this single Rome, NY product had more tubes.
These high-boilered Masons had several numbers and at least one name each as follows:
LR, MR & T StL, IM & S MP
5 ZEB WARD 620 8815
6 WILLIAM MASON 621 8816
7 PINE BLUFF 622 8817
8 LITTLE ROCK 623 8818
9 VARNER 624 8819
10 ARKANSAS CITY 625
11 COLLINS 626
12 MONTICELLO 627 8820
625 may have been scrapped before the class came under MP control and 626 went first to the SI & E as its 542 and then to the Rankin Lumber Company in Mars Bluff, South Carolina.
Locobase isn't sure these are the engines operated first by the Arkansas Midland. For one thing, the dates shown in Connelly's list are all over the map as are the works numbers 12842 in July 1892, 14524 in November 1895, 16268 in October 1898, 17199 in October 1899.
But 3 of them were later credited to the International Great Northern and renumbered twice before receiving MP road numbers 8826 (works 12832), 8827 (works 16268), and 8828 (works 17199).
NB: The direct heating surface (including the firebox heating surface) is an estimate calculated by subtracting the calculated tube heating surface from the reported total evaporative heating surface.
See 10041 for a brief description of this KC-based railway. In this entry you find a class of late-80s Eight-wheelers of typical size and power. It's not clear why the numbering should have disagreed with the year of production. When the KC & NW was absorbed by the Missouri Pacific in 1894, this class went along.
NB: The direct heating surface (including the firebox heating surface) is an estimate calculated by subtracting the calculated tube heating surface from the reported total evaporative heating surface.
Compared to the others in the 1924 book, this 4-4-0 class is bigger, but not remarkably more powerful. The first 10 were built by Baldwin in August 1895 (works numbers 14373-14382) with MoPac adding two from its own shops in 1897-1898.
The class was delivered with 62" drivers (tractive effort of 19,190 lb, factor of adhesion 4.17), but sometime later all received 69" wheels that better suited them to light passenger service.
Slightly jumbled septet from Grant in this year. Some had 138 tubes and measured 11 1/2" over the tube sheets while others had 140 tubes that were 3 inches shorter. What Locobase finds most interesting is the small cylinder volume and light weight.
When the St L, IM & S was taken in by the Missouri Pacific, the 5 survivors (ex-72-75 and 79) were renumbered 8803-8807.
Fortunately for future railroad historians and ferro-equinologists (and database compilers), the 1924 edition of the Missouri Pacific diagrams included several of Eight-wheelers from well before the turn of the century.
Using the same power dimensions as the earlier Rogers engines (see Locobase 6729), the design shown here featured a few more boiler tubes and a larger grate. 3 of the 4 delivered are shown on a page that has an indistinct builder's credit. It may have been Rhode Island as well.
Fortunately for future railroad historians and ferro-equinologists (and database compilers), the 1924 edition of the Missouri Pacific diagrams included several of Eight-wheelers from well before the turn of the century.
The lower drivers mark this as a mostly freight engine of somewhat smaller dimensions than the other 4-4-0s in the book from the same era.
Fortunately for future railroad historians and ferro-equinologists (and database compilers), the 1924 edition of the Missouri Pacific diagrams included several of Eight-wheelers from well before the turn of the century.
This is a repeat of the 1882 Rhode Island engine (see Locobase 6730) with the boiler pressed to a higher level.
Locobase doesn't know if this was a 1-only
NB: Reported total heating surface is 127 sq ft less than the calculated tube heating surface.
This particular boiler area-grate area combination was a common sight on the MP for some reason and various builders produced batches of slightly varying designs to the specifications for well over a decade.
Lightweight Eight-wheeler for its time, the 8714 served the MP for 33 years before being scrapped in October 1924.
NB: The direct heating surface (including the firebox heating surface) is an estimate calculated by subtracting the calculated tube heating surface from the reported total evaporative heating surface.
Locobase wonders about the specification for evaporative heating surface shown for this stray Eight-wheeler. By tube count and length and allowing for a typical firebox, the figure should be closer to 1,000 sq ft.
Similar in size to the Rogers bought in the same year (10060), this home-built had a 30-year+ operating life on the MP.
8823 had 162 2" tubes that were 10 ft 8 in long over the tube sheets.
NB: The direct heating surface (including the firebox heating surface) is an estimate calculated by subtracting the calculated tube heating surface from the reported total evaporative heating surface.
A trio of Eight-wheelers was delivered in 1904 as shown in Locobase 12711, but only two were superheated. The boiler modification consisted only of removing 114 small tubes in favor of installing 18 superheater flues and replacing the slide valves with 8" piston valves.
Produced later than many other 4-4-0s, these home-builts were quite small and light, probably to serve branch lines. The tender's oil-fuel capacity was rated at 44 barrels (1,848 US gallons).
This IGN-built locomotive appears to have been copied from the earlier Rogers locomotives. But Locobase notes that with two fewer fire tubes, the IGN somehow gained 87 sq ft of tube area. Hmmmmm ...
Locobase 6729 profiles some Rogers Eight-wheelers delivered to the IGN in the same year, but these are slightly different in their boiler dimensions. Locobase thinks they represent a different order.
Tender capacity is expressed in either tons of coal or barrels of oil, in this case 44 bbl. As Eight-wheelers went in the early 1890s, this mixed-traffic class had relatively big boilers, but grates of about average size supporting quite small fireboxes. The tender's oil-fuel capacity was rated at 44 barrels (1,848 US gallons). Given the small drivers and cylinders, these were never intended for speed, but for regular local service.
Two of the class (105-106) were built along somewhat different lines and delivered in 1890; see Locobase 6888.
Within the set of Eight-wheelers of average power -- Locobase 6887 -- reposed these two supercharged ponies. The boiler pressure was set 30 psi higher, the boiler was slightly smaller, but the grate a little bigger and the firebox significantly larger. It's possible that the others were set at 150 psi because the higher tractive effort of this pair must have left them slippery little devils.
The tender's oil-fuel capacity was rated at 44 barrels (1,848 US gallons).
Locobase 6887-6888 show the others that shared the same class ID, but this pair was clearly a different brand from the others. It seems to have been built to the same template as an earlier home-built (Locobase 6785), but had larger cylinders and more adhesion weight. The tender's oil-fuel capacity was rated at 44 barrels (1,848 US gallons).
These small Eight-wheelers were delivered with equipment supplied to Baldwin from the following suppliers:
Tower couplers
Pyle-National electric headlights
Monitor injectors
Ajax journal bearings
Richardson valve rod packings
Baldwin standard safety valves
Leach sanding devices
Detroit sight-feed lubricators
Safety steam heat equipment
Midvale driving and truck wheel tires
6-8 and 11 were taken into the Missouri Pacific in 1925 as E-63 class 910-913; by that time, the tube count in the boilers had dropped to 174 and evaporative heating surface area measured 1,114 sq ft.. 912 was sold immediately, presumably for scrap.
9 -10 and 12-14 went to the San Benito & Rio Grande Valley in 1921. This gives Locobase the opportunity to describe this little railway, thanks to the the Cameron County Historical Commission's website http://www.cameroncountyhistoricalcommission.org/ValleyHistory.htm, accessed 30 July 2006.
Located in a triangle bounded by the Gulf of Mexico and the country of Mexico, the SB & RGV received its first push from St Louis-San Francisco Railroad-backed interests whose agent was Sam Robertson. Robertson purchased some "junk locomotives and cars" from George Dilley in Palestine in 1910. Also known as the Spider Web or "Sam Robertson's Back Door Railroad", various lines and loops were added until in 1916, the SB & RVG owned 75 miles of track and 2 locomotives. The Frisco entered receivership that year, which pulled the SB & RGV in as well. At that point, the NOT & M bought the SB & RVG and brought its locomotives with it.
The trio of StL, B & M engines in this entry went to the still independently operated railway sometime after 1921, then to the Missouri Pacific in 1925.
This Millersville, Pa, short line didn't temporize on the passenger power, selecting a relatively high drivered American to pull its modest service.
A year after it was built for the MP, however, Baldwin repossessed the 1 in December 1915. Then the 1 went to Toledo Detroit, which leased the engine to the Detroit, Toledo & Ironton as their 16. The DT&I ran the 16 for about 13 years before selling it in 1928. Only two years later, the 16 became of the first American steam locomotives to leave service to go on display at the Ford Museum in Dearborn, Mich. There the engine reposed for 50 years until it was traded to the Illinois Railway Museum in 1980.
| Specifications by Steve Llanso | |||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Class | 1 | 1 | 1 | 1 | 11 | 12 | 20 | 2208 | 2502 | 28 | 4 | 5 | 6 | 6, 2 | 698 / E-62 | 72 / 407 / 8803 | 8509 | 8552 | 8566 | 8631 | 8654 | 8710 | 8714 | 8719 | 8736 | 8821 | E - 67 - 17.8 | E 16/24 52A | E 16/24 56A | E 16/24 58A | E 18/24 68C | E 18/24 68C - 180 | E 18/24 68C - small | E-63 - 15.0 | T E Herrick |
| Locobase ID | 10057 | 10063 | 11619 | 12711 | 12737 | 6885 | 10058 | 6728 | 6729 | 10059 | 10066 | 10068 | 10070 | 10064 | 6733 | 10067 | 6730 | 6731 | 6732 | 10054 | 10056 | 10061 | 10060 | 10062 | 10065 | 10069 | 7764 | 6886 | 6785 | 6784 | 6887 | 6888 | 6889 | 7769 | 14328 |
| Railroad | Arkansas & Louisiana (MP) | Denver, Memphis & Atlantic (MP) | Houston, Central Arkansas & Northern (MP) | Saint Louis, Brownsville & Mexico (MP) | Wabash, Chester & Western (MP) | International & Great Northern (MP) | Saint Louis, Iron Mountain & Southern (MP) | Saint Louis, Iron Mountain & Southern (MP) | Missouri Pacific (MP) | Saint Louis, Iron Mountain & Southern (MP) | Kansas City, Wyandotte & Northwestern (MP) | Little Rock, Mississippi River & Texas (MP) | Arkansas Midland (MP) | Kansas City, Wyandotte & Northwestern (MP) | Saint Louis, Iron Mountain & Southern (MP) | Saint Louis, Iron Mountain & Southern (MP) | Missouri Pacific (MP) | Missouri Pacific (MP) | Missouri Pacific (MP) | Missouri Pacific (MP) | Missouri Pacific (MP) | Missouri Pacific (MP) | Missouri Pacific (MP) | Missouri Pacific (MP) | Missouri Pacific (MP) | Missouri Pacific (MP) | Saint Louis, Brownsville & Mexico (MP) | International & Great Northern (MP) | International & Great Northern (MP) | International & Great Northern (MP) | International & Great Northern (MP) | International & Great Northern (MP) | International & Great Northern (MP) | Saint Louis, Brownsville & Mexico (MP) | Midland Pennsylvania |
| Whyte | 4-4-0 | 4-4-0 | 4-4-0 | 4-4-0 | 4-4-0 | 4-4-0 | 4-4-0 | 4-4-0 | 4-4-0 | 4-4-0 | 4-4-0 | 4-4-0 | 4-4-0 | 4-4-0 | 4-4-0 | 4-4-0 | 4-4-0 | 4-4-0 | 4-4-0 | 4-4-0 | 4-4-0 | 4-4-0 | 4-4-0 | 4-4-0 | 4-4-0 | 4-4-0 | 4-4-0 | 4-4-0 | 4-4-0 | 4-4-0 | 4-4-0 | 4-4-0 | 4-4-0 | 4-4-0 | 4-4-0 |
| Road Numbers | 1-2 / 858-8659 | 1-6 / 8720-8725 | 1 | 1-3 / 925-927 | 11, 14 | 12 | 20 / 220 / 871 / 8701 | 2208 / 8808 | 2502, 2505-08 | 8702-8706 | 4 / 8745 | 5-12 / 8815-8820 | 6-9 / 8824, 8826-8828 | 6-10, 2-3 / 8727-32, 8748-49 | 698-709 / 8601-8612 | 72-76, 79-80 / 407-11, 418-19/8803+ | 8509-8511, 8562, 8564+ | 8551-55 | 8566 | 8631 | 8654 | 8710-8713, 8716 | 8714 | 8719 | 8736 | 8821, 8823 | 925-927 | 22, 39, 48, 57-58 | 60 | 42, 55 | 101-104, 107, 110 | 105-106 | 108-109 | 6-11 / 910-912, 952-955 | 1 |
| Gauge | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std |
| Builder | New York | Brooks | Burnham, Parry, Williams & Co | Burnham, Williams & Co | Baldwin | Rogers | Grant | Danforth, Cooke | Rogers | Grant | New York | William Mason | Burnham, Williams & Co | Burnham, Parry, Williams & Co | several | Grant | Rhode Island | Rogers | Rhode Island | Missouri Pacific | Hinkley | Rogers | Rogers | Rogers | Missouri Pacific | Hinkley | Baldwin | I & GN | I & GN | Rogers | Schenectady | Schenectady | I & GN | Burnham, Williams & Co | Baldwin |
| Year | 1886 | 1886 | 1889 | 1904 | 1911 | 1878 | 1872 | 1872 | 1880 | 1872 | 1887 | 1880 | 1892 | 1887 | 1895 | 1879 | 1882 | 1882 | 1883 | 1893 | 1887 | 1888 | 1891 | 1879 | 1891 | 1887 | 1920 | 1904 | 1891 | 1880 | 1892 | 1890 | 1898 | 1905 | 1914 |
| Valve Gear | Stephenson | Stephenson | Stephenson | Stephenson | Stephenson | Stephenson | Stephenson | Stephenson | Stephenson | Stephenson | Stephenson | Stephenson | Stephenson | Stephenson | Stephenson | Stephenson | Stephenson | Stephenson | Stephenson | Stephenson | Stephenson | Stephenson | Stephenson | Stephenson | Stephenson | Stephenson | Stephenson | Stephenson | Stephenson | Stephenson | Stephenson | Stephenson | Stephenson | Stephenson | Stephenson |
| Locomotive Length and Weight | |||||||||||||||||||||||||||||||||||
| Driver Wheelbase | 8' | 8' | 9.08' | 9.08' | 8' | 8' | 9.25' | 8' | 9' | 9.50' | 9.50' | 9.50' | 8.75' | 8.75' | 8' | 8.67' | 9.08' | 9' | 9' | 9' | 9' | 9' | 9' | 8.25' | 8.50' | ||||||||||
| Engine Wheelbase | 22.62' | 21.75' | 24.29' | 23.08' | 21.65' | 21.67' | 23.08' | 21.67' | 24.02' | 23.17' | 23.29' | 23.17' | 24.19' | 23.08' | 22.33' | 22.96' | 24.29' | 23.58' | 24.04' | 24.04' | 23.96' | 23.96' | 23.96' | 22.25' | 22.58' | ||||||||||
| Ratio of driving wheelbase to overall engine wheebase | 0.35 | 0.37 | 0.37 | 0.39 | 0.37 | 0.37 | 0.40 | 0.37 | 0.37 | 0.41 | 0.41 | 0.41 | 0.36 | 0.38 | 0.36 | 0.38 | 0.37 | 0.38 | 0.37 | 0.37 | 0.38 | 0.38 | 0.38 | 0.37 | 0.38 | ||||||||||
| Overall Wheelbase (engine & tender) | 44.96' | 47.75' | 44.19' | 47.22' | 44.19' | 48.60' | 47.42' | 45.83' | 47.42' | 48.73' | 45.27' | 47.29' | 52.17' | 43.83' | 47.29' | 47.29' | 46.71' | 46.71' | 46.71' | 53.44' | 49' | ||||||||||||||
| Axle Loading (Maximum Weight per Axle) | |||||||||||||||||||||||||||||||||||
| Weight on Drivers | 67600 lbs | 52000 lbs | 45200 lbs | 72500 lbs | 67000 lbs | 38000 lbs | 48000 lbs | 45000 lbs | 58000 lbs | 48000 lbs | 50000 lbs | 40000 lbs | 51400 lbs | 48000 lbs | 80000 lbs | 44000 lbs | 58000 lbs | 56000 lbs | 58000 lbs | 68000 lbs | 78000 lbs | 52000 lbs | 54000 lbs | 48000 lbs | 52000 lbs | 50000 lbs | 74300 lbs | 52000 lbs | 66000 lbs | 53000 lbs | 68000 lbs | 68000 lbs | 68000 lbs | 58480 lbs | 76000 lbs |
| Engine Weight | 103400 lbs | 78000 lbs | 72500 lbs | 113000 lbs | 104000 lbs | 62000 lbs | 72000 lbs | 70000 lbs | 88000 lbs | 72000 lbs | 78000 lbs | 68000 lbs | 78000 lbs | 78000 lbs | 126000 lbs | 72000 lbs | 88000 lbs | 86000 lbs | 88000 lbs | 108000 lbs | 94000 lbs | 78000 lbs | 86000 lbs | 66000 lbs | 78000 lbs | 78000 lbs | 118500 lbs | 88000 lbs | 100000 lbs | 90000 lbs | 104000 lbs | 104000 lbs | 104000 lbs | 92910 lbs | 115000 lbs |
| Tender Light Weight | 78000 lbs | 137000 lbs | 70000 lbs | 64000 lbs | 48000 lbs | 64000 lbs | 64000 lbs | 88000 lbs | 38000 lbs | 58000 lbs | 90000 lbs | 92400 lbs | 36000 lbs | 62000 lbs | 62000 lbs | 62000 lbs | 74000 lbs | 79000 lbs | 64000 lbs | 76000 lbs | 66000 lbs | 62000 lbs | 58000 lbs | 137000 lbs | 92000 lbs | 88000 lbs | 73000 lbs | 88000 lbs | 88000 lbs | 88000 lbs | 103000 lbs | 80000 lbs | |||
| Total Engine and Tender Weight | 156000 lbs | 250000 lbs | 174000 lbs | 136000 lbs | 118000 lbs | 152000 lbs | 136000 lbs | 166000 lbs | 106000 lbs | 136000 lbs | 168000 lbs | 218400 lbs | 108000 lbs | 150000 lbs | 148000 lbs | 150000 lbs | 182000 lbs | 173000 lbs | 142000 lbs | 162000 lbs | 132000 lbs | 140000 lbs | 136000 lbs | 255500 lbs | 180000 lbs | 188000 lbs | 163000 lbs | 192000 lbs | 192000 lbs | 192000 lbs | 195910 lbs | 195000 lbs | |||
| Tender Water Capacity | 5000 gals | 2800 gals | 2200 gals | 6000 gals | 3500 gals | 1600 gals | 2900 gals | 2000 gals | 3000 gals | 2400 gals | 3400 gals | 2000 gals | 2900 gals | 3600 gals | 4000 gals | 2400 gals | 3000 gals | 3000 gals | 3000 gals | 3600 gals | 4000 gals | 2900 gals | 3000 gals | 3000 gals | 3600 gals | 2600 gals | 6000 gals | 4000 gals | 4000 gals | 3200 gals | 4000 gals | 4000 gals | 4000 gals | 5500 gals | 4000 gals |
| Tender Fuel Capacity (oil/coal) | 7 tons | 7 tons | tons | 2180 gals | gals | 2 tons | tons | 6 tons | 9 tons | tons | tons | tons | tons | tons | 8 tons | tons | 7.5 tons | 6 tons | 7.5 tons | 8 tons | 8 tons | 6 tons | tons | tons | 8 tons | tons | 2180 gals | 9 tons | 9 tons | 7 tons | 9 tons | 9 tons | 9 tons | 2466 gals | 6 tons |
| Minimum weight of rail (calculated) on which locomotive could run | 56 lb/yard | 43 lb/yard | 38 lb/yard | 60 lb/yard | 56 lb/yard | 32 lb/yard | 40 lb/yard | 38 lb/yard | 48 lb/yard | 40 lb/yard | 42 lb/yard | 33 lb/yard | 43 lb/yard | 40 lb/yard | 67 lb/yard | 37 lb/yard | 48 lb/yard | 47 lb/yard | 48 lb/yard | 57 lb/yard | 65 lb/yard | 43 lb/yard | 45 lb/yard | 40 lb/yard | 43 lb/yard | 42 lb/yard | 62 lb/yard | 43 lb/yard | 55 lb/yard | 44 lb/yard | 57 lb/yard | 57 lb/yard | 57 lb/yard | 49 lb/yard | 63 lb/yard |
| Geometry Relating to Tractive Effort | |||||||||||||||||||||||||||||||||||
| Driver Diameter | 69" | 64" | 62" | 68" | 62" | 55" | 63" | 63" | 64" | 69" | 63" | 62.75" | 62.75" | 64" | 69" | 64" | 64" | 58" | 64" | 64" | 67" | 64" | 64" | 63" | 64" | 64" | 68" | 63" | 63" | 63" | 63" | 62" | 62" | 63" | 68" |
| Boiler Pressure | 150 psi | 140 psi | 130 psi | 180 psi | 180 psi | 120 psi | 140 psi | 145 psi | 140 psi | 140 psi | 140 psi | 140 psi | 140 psi | 140 psi | 180 psi | 140 psi | 140 psi | 140 psi | 145 psi | 140 psi | 150 psi | 140 psi | 122 psi | 140 psi | 140 psi | 140 psi | 180 psi | 160 psi | 155 psi | 130 psi | 150 psi | 180 psi | 160 psi | 160 psi | 190 psi |
| Cylinders (dia x stroke) | 18" x 26" | 17" x 24" | 16" x 24" | 18" x 24" | 17" x 24" | 15" x 22" | 17" x 24" | 16" x 24" | 19" x 22" | 17" x 24" | 17" x 24" | 16" x 24" | 16" x 24" | 17" x 24" | 18" x 24" | 16" x 24" | 19" x 22" | 19" x 22" | 19" x 22" | 18" x 24" | 18" x 24" | 17" x 24" | 17" x 24" | 17" x 24" | 17" x 24" | 16" x 24" | 18" x 24" | 16" x 24" | 16" x 24" | 16" x 24" | 18" x 24" | 18" x 24" | 18" x 24" | 17" x 24" | 18" x 24" |
| Tractive Effort | 15566 lbs | 12897 lbs | 10950 lbs | 17496 lbs | 17116 lbs | 9180 lbs | 13101 lbs | 12020 lbs | 14767 lbs | 11962 lbs | 13101 lbs | 11652 lbs | 11652 lbs | 12897 lbs | 17242 lbs | 11424 lbs | 14767 lbs | 16295 lbs | 15295 lbs | 14459 lbs | 14798 lbs | 12897 lbs | 11238 lbs | 13101 lbs | 12897 lbs | 11424 lbs | 17496 lbs | 13263 lbs | 12849 lbs | 10776 lbs | 15737 lbs | 19189 lbs | 17057 lbs | 14973 lbs | 18468 lbs |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.34 | 4.03 | 4.13 | 4.14 | 3.91 | 4.14 | 3.66 | 3.74 | 3.93 | 4.01 | 3.82 | 3.43 | 4.41 | 3.72 | 4.64 | 3.85 | 3.93 | 3.44 | 3.79 | 4.70 | 5.27 | 4.03 | 4.81 | 3.66 | 4.03 | 4.38 | 4.25 | 3.92 | 5.14 | 4.92 | 4.32 | 3.54 | 3.99 | 3.91 | 4.12 |
| Heating Ability | |||||||||||||||||||||||||||||||||||
| Firebox Area | 98 sq. ft | 102 sq. ft | 149.60 sq. ft | 138 sq. ft | 72 sq. ft | 105 sq. ft | 108.80 sq. ft | 115.50 sq. ft | 135 sq. ft | 160 sq. ft | 121 sq. ft | 125 sq. ft | 121 sq. ft | 115 sq. ft | 110 sq. ft | 165 sq. ft | 120 sq. ft | 97.50 sq. ft | 149.60 sq. ft | 100 sq. ft | 104 sq. ft | 104 sq. ft | 106 sq. ft | 152 sq. ft | 104 sq. ft | 119.10 sq. ft | 142 sq. ft | ||||||||
| Grate Area | 17.50 sq. ft | 15.50 sq. ft | 15.50 sq. ft | 18.70 sq. ft | 18 sq. ft | 13 sq. ft | 15.30 sq. ft | 14.60 sq. ft | 17 sq. ft | 14.10 sq. ft | 16.60 sq. ft | 15.50 sq. ft | 15.30 sq. ft | 16.90 sq. ft | 17 sq. ft | 14.10 sq. ft | 20 sq. ft | 19.70 sq. ft | 20.20 sq. ft | 16.70 sq. ft | 16.80 sq. ft | 14.80 sq. ft | 17 sq. ft | 13.70 sq. ft | 15.20 sq. ft | 16.50 sq. ft | 18.70 sq. ft | 15.50 sq. ft | 17 sq. ft | 17 sq. ft | 18 sq. ft | 19.40 sq. ft | 17 sq. ft | 16.49 sq. ft | 29.30 sq. ft |
| Evaporative Heating Surface | 1414 sq. ft | 1092 sq. ft | 1686 sq. ft | 1465 sq. ft | 782 sq. ft | 1031 sq. ft | 858 sq. ft | 1147 sq. ft | 1031 sq. ft | 1092 sq. ft | 1092 sq. ft | 1031 sq. ft | 1092 sq. ft | 1724 sq. ft | 1031 sq. ft | 1206 sq. ft | 1108 sq. ft | 1206 sq. ft | 1129 sq. ft | 1180 sq. ft | 1031 sq. ft | 1180 sq. ft | 776 sq. ft | 1180 sq. ft | 1092 sq. ft | 1260 sq. ft | 936 sq. ft | 1268 sq. ft | 1181 sq. ft | 1613 sq. ft | 1578 sq. ft | 1268 sq. ft | 1186 sq. ft | 1756 sq. ft | |
| Superheating Surface | 214 sq. ft | ||||||||||||||||||||||||||||||||||
| Combined Heating Surface | 1414 sq. ft | 1092 sq. ft | 0 | 1686 sq. ft | 1465 sq. ft | 782 sq. ft | 1031 sq. ft | 858 sq. ft | 1147 sq. ft | 1031 sq. ft | 1092 sq. ft | 1092 sq. ft | 1031 sq. ft | 1092 sq. ft | 1724 sq. ft | 1031 sq. ft | 1206 sq. ft | 1108 sq. ft | 1206 sq. ft | 1129 sq. ft | 1180 sq. ft | 1031 sq. ft | 1180 sq. ft | 776 sq. ft | 1180 sq. ft | 1092 sq. ft | 1474 sq. ft | 936 sq. ft | 1268 sq. ft | 1181 sq. ft | 1613 sq. ft | 1578 sq. ft | 1268 sq. ft | 1186 sq. ft | 1756 sq. ft |
| Evaporative Heating Surface/Cylinder Volume | 184.65 | 173.20 | 238.52 | 232.36 | 173.79 | 163.52 | 153.62 | 158.88 | 163.52 | 173.20 | 195.52 | 184.60 | 173.20 | 243.90 | 184.60 | 167.05 | 153.47 | 167.05 | 159.72 | 166.94 | 163.52 | 187.15 | 123.08 | 187.15 | 195.52 | 178.25 | 167.59 | 227.03 | 211.46 | 228.19 | 223.24 | 179.39 | 188.10 | 248.42 | |
| Computations Relating to Power Output (More Information) | |||||||||||||||||||||||||||||||||||
| Robert LeMassena's Power Computation | 2625 | 2170 | 2015 | 3366 | 3240 | 1560 | 2142 | 2117 | 2380 | 1974 | 2324 | 2170 | 2142 | 2366 | 3060 | 1974 | 2800 | 2758 | 2929 | 2338 | 2520 | 2072 | 2074 | 1918 | 2128 | 2310 | 3366 | 2480 | 2635 | 2210 | 2700 | 3492 | 2720 | 2638 | 5567 |
| Same as above plus superheater percentage | 2625 | 2170 | 2015 | 3366 | 3240 | 1560 | 2142 | 2117 | 2380 | 1974 | 2324 | 2170 | 2142 | 2366 | 3060 | 1974 | 2800 | 2758 | 2929 | 2338 | 2520 | 2072 | 2074 | 1918 | 2128 | 2310 | 3871 | 2480 | 2635 | 2210 | 2700 | 3492 | 2720 | 2638 | 5567 |
| Same as above but substitute firebox area for grate area | 14700 | 14280 | 0 | 26928 | 24840 | 8640 | 0 | 15225 | 15232 | 0 | 0 | 0 | 16170 | 18900 | 28800 | 0 | 16940 | 17500 | 17545 | 16100 | 0 | 15400 | 20130 | 0 | 16800 | 13650 | 30967 | 16000 | 16120 | 13520 | 15900 | 27360 | 16640 | 19056 | 26980 |
| Power L1 | 4289 | 3794 | 0 | 7025 | 6357 | 2792 | 0 | 3770 | 3498 | 0 | 0 | 0 | 4217 | 4185 | 7391 | 0 | 3746 | 3249 | 3880 | 3600 | 0 | 3745 | 4138 | 0 | 4216 | 4223 | 11354 | 4320 | 5210 | 4157 | 4775 | 6152 | 4182 | 4747 | 7512 |
| Power MT | 279.75 | 321.70 | 0 | 427.24 | 418.35 | 323.96 | 0 | 369.40 | 265.92 | 0 | 0 | 0 | 361.75 | 384.43 | 407.36 | 0 | 284.78 | 255.81 | 294.96 | 233.43 | 0 | 317.55 | 337.88 | 0 | 357.49 | 372.40 | 673.79 | 366.31 | 348.06 | 345.83 | 309.62 | 398.91 | 271.17 | 357.91 | 435.82 |