Chicago & Alton / Saint Louis, Peoria & Northern 4-4-0 "American" Locomotives of the USA


Class Details by Steve Llanso of Sweat House Media

Class 168/D6 (Locobase 10268)

Data from C & A 6 - 1918 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection. Works numbers were 1148-1151, 1153, 1155 in August 1879.


Class 28/D5 (Locobase 10267)

Data from C & A 6 - 1918 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection. See also DeGolyer, Volume 21, p. 120. Works numbers were 15679-15680 in January 1898, and 15898 in May 1898. See Locobase 7005 for the Peoria Short Line's history.

These Eight-wheelers were typical late 19th century local passenger engines with deep, narrow fireboxes. 30 was delivered with crystal plate-glass cab windows, glass-covered number plates, and a special finish (D 158) as it was headed for the 1898 Trans-Mississippi Exposition at Omaha in July, where it was displayed with seven other new locomotives.

They traveled under Peoria Short Line colors for about two years wowhen that financially troubled system was sold to both the Illinois Central and the Chicago & Alton. As the Alton's D-5s, they operated for another 25-30 years before being scrapped in 1927 (15898), and February 1929.


Class D Odd (Locobase 9090)

Data from C&A 6 - 1918 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection. Works numbers were 1124, 1126, 1128 in May 1879.

The trio of 1879 Schenectady engines of the four. Locobase 9091 shows a rebuilt 167 with taller drivers and substantially greater weight.


Class D Odd (Locobase 9091)

Data from C&A 6 - 1918 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection.

One of the three 1879 Eight-wheelers shown in Locobase 9090, this Eight-wheeler was rebuilt as a purely passenger engine with 70" drivers. It's likely to have include replacement of the original boiler as it weighed 9 short tons (8,165 kg) more than the originals.


Class D1 / D1a (Locobase 7367)

Data from C&A 6 - 1918 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection.

These Eight-wheelers showed up in the 1918 diagram book. They came from several sources. 20 was a home-built that apparently remained unchanged through its career. Schenectady supplied 56 and 215 in 1883 to the same design.


Class D1C (Locobase 7368)

Data from C&A 6 - 1918 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection.

Delivered in the same year as the D1A (Locobase 7367), this Eight-wheeler had a few more tubes and a little more heating surface as a result.


Class D2 (Locobase 7369)

Data from C&A 6 - 1918 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection.

In June 1880, the Alton's shops turned out eight Eight-wheelers with freight-service driver diameters of 60". Over the years, several of the class were rebuilt, one of which was 207. This particular engine had more of a passenger feel to it. Even after the rebuild, the 207's boiler was smaller than many of the 1880s 4-4-0s on the railroad while the firebox stayed the same size. There was also more weight on the drivers and overall.


Class D2A (Locobase 7370)

Data from C&A 6 - 1918 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection.

Predating the D2 (Locobase 7369) by 2 years (which suggests a retrospective classification), this shop-built locomotive had a big boiler and seems to have been based on the 1880 Schenectady engine shown in Locobase 7368. One significant difference is the taller drivers.


Class D2B (Locobase 7371)

Data from C&A 6 - 1918 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection. Works numbers were 1762-1766 in August 1883.

This was another of the C & A's Eight-wheelers that was built to the same basic specs over a three-five year period in the 1880s by Schenectady and the shops.


Class D2C (Locobase 7372)

Data from C&A 6 - 1918 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection.

Delivered in the same year as the D1C (Locobase 7367), this Eight-wheeler was identical to the Schenectady-built engine except for its taller drivers.


Class D3 (Locobase 7373)

Data from C&A 6 - 1918 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection.

Looking more like modern Eight-wheelers, this pair of shop-builts included a larger boiler and grate than earlier C & A 4-4-0s.


Class D3A (Locobase 10269)

Data from C&A 6 - 1918 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection.

In the same year that the C & A produced two rather large Eight-wheelers (Locobase 7373) they delivered this single engine with fewer tubes in the same boiler, but a larger, deeper firebox.


Class D3B (Locobase 10270)

Data from C&A 6 - 1918 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection.

Locobase suspects that the building date of 1905 represents the year that the C & A overhauled an older locomotive. Perhaps they replaced an older boiler with a new one of similar size, but a more modern configuration.


Class D7C (Locobase 3926)

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 #3368-3379, produced in November-December 1899.

The Alton had recently introduced day-service between Chicago and St. Louis on a leisurely schedule of 7 hours, 59 minutes southbound (13 stops), 7 hours 54 minutes northbound (15 stops) for the 284 miles. The train, designed to Pullman standards, had 6 cars including a postal car.

Features of the design, according to Railroad Gazette (8 Jan 1900), were the use of 10" piston valves and cast steel in many components. Visually they had a characteristic eyebrow dormer on each side of the cab roof and were painted maroon. They had the typical high running board, spoked drivers and pony truck wheels of the turn-of-the-century American locomotive.

Rumary-Lambert report that the class was delivered with 19 1/2" diameter cylinders that were soon bored out to 20" and some were later fitted with 19" cylinders. The data in the spec, however, comes from the RG account, which was published at the time of their construction.

Drury (1993) comments that these "elegant" locomotives soon proved insufficiently powerful for the passenger service they hauled. Most were scrapped in a single year - 1933.

Specifications by Steve Llanso of Sweat House Media
Class168/D628/D5D OddD OddD1 / D1a
Locobase ID10,268 10,267 9090 9091 7367
RailroadChicago & Alton (C&A)Saint Louis, Peoria & Northern (C&A)Chicago & Alton (C&A)Chicago & Alton (C&A)Chicago & Alton (C&A)
CountryUSAUSAUSAUSAUSA
Whyte4-4-04-4-04-4-04-4-04-4-0
Number in Class43311
Road Numbers168-17128-30/109-111165-16716720, 56, 215
GaugeStdStdStdStdStd
Number Built4331
BuilderSchenectadyBurnham, Williams & CoSchenectadyC&Aseveral
Year1879189818791880
Valve GearStephensonStephensonStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft) 8.50 8.08 8.67 8.67 8.67
Engine Wheelbase (ft)22.9823.9223.1022.9223.11
Ratio of driving wheelbase to overall engine wheebase 0.37 0.34 0.38 0.38 0.38
Overall Wheelbase (engine & tender) (ft)44.3147.7547.0647.6044.56
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)53,20075,10060,30054,600
Engine Weight (lbs)84,000115,80084,000103,50088,600
Tender Loaded Weight (lbs)79,15076,00090,60090,60079,150
Total Engine and Tender Weight (lbs)163,150191,800174,600194,100167,750
Tender Water Capacity (gals)35004000450045003500
Tender Fuel Capacity (oil/coal) (gals/tons)7777
Minimum weight of rail (calculated) (lb/yd)44635046
Geometry Relating to Tractive Effort
Driver Diameter (in)6370647063
Boiler Pressure (psi)150180165165150
High Pressure Cylinders (dia x stroke) (in)17" x 24"18" x 24"18" x 24"18" x 24"17" x 24"
Tractive Effort (lbs)14,03716,99617,04015,58014,037
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.79 4.42 3.87 3.89
Heating Ability
Firebox Area (sq ft)102.60154.8097.5097.5090
Grate Area (sq ft)16.8018.5017.1017.1017.20
Evaporative Heating Surface (sq ft)11441646132513251225
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)11441646132513251225
Evaporative Heating Surface/Cylinder Volume181.44232.86187.45187.45194.29
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation25203330282228222580
Same as above plus superheater percentage25203330282228222580
Same as above but substitute firebox area for grate area15,39027,86416,08816,08813,500
Power L141397190451349364184
Power MT343.04422.14360.93337.88

Specifications by Steve Llanso of Sweat House Media
ClassD1CD2D2AD2BD2C
Locobase ID7368 7369 7370 7371 7372
RailroadChicago & Alton (C&A)Chicago & Alton (C&A)Chicago & Alton (C&A)Chicago & Alton (C&A)Chicago & Alton (C&A)
CountryUSAUSAUSAUSAUSA
Whyte4-4-04-4-04-4-04-4-04-4-0
Number in Class11111
Road Numbers2192071374155
GaugeStdStdStdStdStd
Number Built11111
BuilderSchenectadyChicago & AltonChicago & AltonSchenectadyChicago & Alton
Year18801883188118831881
Valve GearStephensonStephensonStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft) 8.67 8.67 8.67 8.67 8.67
Engine Wheelbase (ft)23.1523.0223.0223.0223.15
Ratio of driving wheelbase to overall engine wheebase 0.37 0.38 0.38 0.38 0.37
Overall Wheelbase (engine & tender) (ft)47.3144.5244.5244.5247.31
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)60,40062,90057,40059,00060,400
Engine Weight (lbs)98,100102,00092,00093,20098,100
Tender Loaded Weight (lbs)90,60097,00079,15079,15090,600
Total Engine and Tender Weight (lbs)188,700199,000171,150172,350188,700
Tender Water Capacity (gals)45004500350035004500
Tender Fuel Capacity (oil/coal) (gals/tons)78777
Minimum weight of rail (calculated) (lb/yd)5052484950
Geometry Relating to Tractive Effort
Driver Diameter (in)6470706470
Boiler Pressure (psi)165160165165165
High Pressure Cylinders (dia x stroke) (in)17" x 24"18" x 24"17" x 24"17" x 24"17" x 24"
Tractive Effort (lbs)15,20015,10813,89715,20013,897
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.97 4.16 4.13 3.88 4.35
Heating Ability
Firebox Area (sq ft)97.50127.5089.8089.8097.50
Grate Area (sq ft)17.2017.1017.1017.1017.10
Evaporative Heating Surface (sq ft)13251058130913011325
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)13251058130913011325
Evaporative Heating Surface/Cylinder Volume210.15149.68207.61206.34210.15
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation28382736282228222822
Same as above plus superheater percentage28382736282228222822
Same as above but substitute firebox area for grate area16,08820,40014,81714,81716,088
Power L150594477536748855534
Power MT369.31313.83412.27365.07403.99

Specifications by Steve Llanso of Sweat House Media
ClassD3D3AD3BD7C
Locobase ID7373 10,269 10,270 3926
RailroadChicago & Alton (C&A)Chicago & Alton (C&A)Chicago & Alton (C&A)Chicago & Alton (C&A)
CountryUSAUSAUSAUSA
Whyte4-4-04-4-04-4-04-4-0
Number in Class21212
Road Numbers105, 108107116-117500-511
GaugeStdStdStdStd
Number Built21212
BuilderChicago & AltonChicago & AltonChicago & AltonBrooks
Year1892189219051899
Valve GearStephensonStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft) 9.17 9.17 9.17 8.75
Engine Wheelbase (ft)23.5223.5223.5224.83
Ratio of driving wheelbase to overall engine wheebase 0.39 0.39 0.39 0.35
Overall Wheelbase (engine & tender) (ft)48.2745.0245.15
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)64,00061,30090,500
Engine Weight (lbs)99,200100,300139,000
Tender Loaded Weight (lbs)90,60087,00087,000120,000
Total Engine and Tender Weight (lbs)186,200187,300259,000
Tender Water Capacity (gals)4500400040006000
Tender Fuel Capacity (oil/coal) (gals/tons)78812
Minimum weight of rail (calculated) (lb/yd)535175
Geometry Relating to Tractive Effort
Driver Diameter (in)70706473
Boiler Pressure (psi)180165160210
High Pressure Cylinders (dia x stroke) (in)18" x 24"18" x 24"18" x 24"19" x 26"
Tractive Effort (lbs)16,99615,58016,52422,951
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.11 3.71 3.94
Heating Ability
Firebox Area (sq ft)132.40146115177
Grate Area (sq ft)18.5018.5017.1031.80
Evaporative Heating Surface (sq ft)1592120010452177
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)1592120010452177
Evaporative Heating Surface/Cylinder Volume225.22169.77147.84255.15
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation3330305327366678
Same as above plus superheater percentage3330305327366678
Same as above but substitute firebox area for grate area23,83224,09018,40037,170
Power L16696525639119169
Power MT362.11281.31446.72


If you have any railroad data such as diagram books, rail station plans or anything else that you would be willing to share, please contact us.