Wabash 4-6-0 "Ten-wheeler" Locomotives of the USA


Class Details by Steve Llanso of Sweat House Media

Class D / H4 (Locobase 9897)

Data from WAB 1907 Locomotive Diagrams book supplied in May 2005 by Allen Stanley from his extensive Raildata collection. See also "Wabash Ten-Wheel Express Locomotive", Railroad Gazette, Volume 22 (17 October 1890), pp. 712-

Apparently adding a foot to the tubes in the H-3's boiler (Locobase 9896), the Wabash also increased the count slightly in these passenger Ten-wheelers produced in the road's shops a year later. The firebox went deeper, but still had the same grate area. Thus the ratio between heating surface and grate area approached 100:1.

The RG account notes with approval the use of a cinder valve under the smokebox, which was easy to operate and not likely to stick. The report didn't especially care for the cross-head design or its valve rod, describing the latter as "a little complicated for the requirements of the case."


Class E / H3 (Locobase 9896)

Data from WAB 1907 Locomotive Diagrams book supplied in May 2005 by Allen Stanley from his extensive Raildata collection.

The railroad built these low-drivered Ten-wheelers in its own shops in 1887-1889.


Class G / H10 (Locobase 9902)

Data from WAB 1907 Locomotive Diagrams book supplied in May 2005 by Allen Stanley from his extensive Raildata collection.

Locobase 3293 describes the H9 simple-expansion Ten-wheelers supplied by Pittsburgh (and 1 by Richmond). Richmond's other 9 locomotives (works 2686-2694) were these cross-compounds delivered at the same time. Identical in nearly all respects, this class weighed about 3,000 lb more than their simple-expansion counterparts.


Class G / H9 (Locobase 3293)

Described in 29 April 1898 Railroad Gazette, which said "These engines are in use and Mr. Barnes [JB Barnes, Superintendent of Motive Power] reports they are giving entire satisfaction." The weights given in the RG article were 108,000 on the drivers, 137,000 for the engine in working order, and 90,000 lb for the loaded tender.

Builder information from B Rumary list supplied by Allen Stanley in March 2004. Works numbers were 1800-1804 (December 1895). Rumary gives their power dimensions as 18x26" cylinders with 64" drivers; this must represent a later rebuild or simply an error. Baldwin's works numbers for 701-705 were 15802-15806 in March 1898. Richmond supplied one locomotive (711) in this configuration and 9 more as compounds. For the latter, see Locobase 9902.

707 retired first in December 1928 while 708 was the last to go in August 1933.


Class H12s (Locobase 9905)

Data from WAB 1907 Locomotive Diagrams book supplied in May 2005 by Allen Stanley from his extensive Raildata collection.

Locobase 9904 describes the original saturated-steam locomotives that came from Baldwin in 1904. Several were later fitted with a relatively sizable superheater and Walschaert gear. These were the only Wabash Ten-wheelers to be so modified.


Class H7 (Locobase 9900)

Data from WAB 1907 Locomotive Diagrams book supplied in May 2005 by Allen Stanley from his extensive Raildata collection. Works numbers were 2375-2384 in September 1890, 2641-2646 in September 1891, 2748-2751 in May 1892, 2765-2772 in September

A full decade after the Rhode Island Works supplied the Wabash with H2 and H6 class locomotives, they delivered more than two dozen new engines. Locobase is surprised by the small differences between the two designs. Although the grate grew a little and the boiler a bit more, adhesion weight increased by over six tons, and the boiler pressure increased by about 10%, the basic layout remained unchanged. In fact, the firebox sat low, between the drivers rather than above the axles as was more common in 1890 than 1880.

The firebox of fifteen in the class later received 11 sq ft of arch tubes, but none was ever superheated. The class proved sturdy enough with a majority operating into the late 1920s-early 1930s before retirement.


Class H8 (Locobase 9901)

Data from WAB 1907 Locomotive Diagrams book supplied in May 2005 by Allen Stanley from his extensive Raildata collection.

This pair of home-built Ten-wheelers looked bigger and faster than their dimensions suggest. The high-mounted boiler and small dome increased the apparent size, but the firebox was still on the stingy side.


Class J / H11 (Locobase 9903)

Data from WAB 1907 Locomotive Diagrams book supplied in May 2005 by Allen Stanley from his extensive Raildata collection.

A sextet of passenger Ten-wheelers from Richmond (works 3225-3230) just months before that builder was absorbed by the American Locomotive Company. They were not particularly big or high-drivered, even for the day, and apparently were never superheated. The class was out of service by 1931.


Class L / H12 (Locobase 9904)

Data from WAB 1907 Locomotive Diagrams book supplied in May 2005 by Allen Stanley from his extensive Raildata collection. Baldwin works numbers 24526, 24534-24536, 24544-24545, 24547, 24560, 24567, 24608 in August 1904.

Sporting a bigger boiler pressed to a higher degree and larger cylinder volume, these Ten-wheelers were the last of the arrangement to go to the Wabash. The class was delivered with 73" drivers, but later fitted with 74" wheels.

Most were not superheated and operated for less than 30 years before being retired. See Locobase 9905 for the 640, which did get a makeover after all.

Specifications by Steve Llanso of Sweat House Media
ClassD / H4E / H3G / H10G / H9H12s
Locobase ID9897 9896 9902 3293 9905
RailroadWabashWabashWabashWabashWabash
CountryUSAUSAUSAUSAUSA
Whyte4-6-04-6-04-6-04-6-04-6-0
Number in Class48953
Road Numbers238-9,712-720701-710638, 640-641
GaugeStdStdStdStdStd
Number Built4895
BuilderWabashWabashRichmondseveralWabash
Year18901887189818981927
Valve GearStephensonStephensonStephensonStephensonWalschaert
Locomotive Length and Weight
Driver Wheelbase15.83'15.33'14'14'14.67'
Engine Wheelbase25.87'24.67'24.48'24.48'25.67'
Ratio of driving wheelbase to overall engine wheebase 0.61 0.62 0.57 0.57 0.57
Overall Wheelbase (engine & tender)48.47'46.80'49.30'49.30'55.96'
Axle Loading (Maximum Weight per Axle)29000 lbs28000 lbs40875 lbs53970 lbs
Weight on Drivers80000 lbs75000 lbs120060 lbs120060 lbs152500 lbs
Engine Weight101000 lbs97000 lbs158660 lbs155510 lbs197730 lbs
Tender Light Weight70000 lbs79700 lbs97700 lbs97700 lbs130000 lbs
Total Engine and Tender Weight171000 lbs176700 lbs256360 lbs253210 lbs327730 lbs
Tender Water Capacity3300 gals4500 gals4500 gals6000 gals
Tender Fuel Capacity (oil/coal)6 tons tons10 tons10 tons13 tons
Minimum weight of rail (calculated)44 lb/yard42 lb/yard67 lb/yard67 lb/yard85 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter69"57"63"63"73"
Boiler Pressure160 psi160 psi200 psi200 psi205 psi
High Pressure Cylinders (dia x stroke)18" x 24"18" x 24"20.5" x 26"19" x 26"21" x 28"
Low Pressure Cylinders (dia x stroke)32.5" x 26" (1)
Tractive Effort15327 lbs18553 lbs21092 lbs25327 lbs29475 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.22 4.04 5.69 4.74 5.17
Heating Ability
Firebox Area143.40 sq. ft118 sq. ft186.16 sq. ft186.16 sq. ft175 sq. ft
Grate Area16.50 sq. ft16.50 sq. ft29.92 sq. ft29.92 sq. ft33.50 sq. ft
Evaporative Heating Surface1610 sq. ft1385 sq. ft2409 sq. ft2409 sq. ft2187 sq. ft
Superheating Surface477 sq. ft
Combined Heating Surface1610 sq. ft1385 sq. ft2409 sq. ft2409 sq. ft2664 sq. ft
Evaporative Heating Surface/Cylinder Volume227.77195.94485.08282.35194.84
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation26402640598459846868
Same as above plus superheater percentage26402640598459848104
Same as above but substitute firebox area for grate area2294418880372323723242333
Power L1605742475619822016343
Power MT500.75374.52309.54452.82708.79

Specifications by Steve Llanso of Sweat House Media
ClassH7H8J / H11L / H12
Locobase ID9900 9901 9903 9904
RailroadWabashWabashWabashWabash
CountryUSAUSAUSAUSA
Whyte4-6-04-6-04-6-04-6-0
Number in Class282610
Road Numbers348347, 391630-635636-645
GaugeStdStdStdStd
Number Built282610
BuilderRhode IslandWabashRichmondBurnham, Williams & Co
Year1890189919011904
Valve GearStephensonStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase14.67'15.50'14'14.67'
Engine Wheelbase24.85'25.85'24.48'25.67'
Ratio of driving wheelbase to overall engine wheebase 0.59 0.60 0.57 0.57
Overall Wheelbase (engine & tender)46.81'48.54'51.65'55.66'
Axle Loading (Maximum Weight per Axle)31000 lbs33625 lbs43600 lbs52850 lbs
Weight on Drivers87000 lbs95025 lbs115500 lbs149140 lbs
Engine Weight113000 lbs128925 lbs158600 lbs193330 lbs
Tender Light Weight75500 lbs96300 lbs120700 lbs130000 lbs
Total Engine and Tender Weight188500 lbs225225 lbs279300 lbs323330 lbs
Tender Water Capacity4600 gals6000 gals6000 gals
Tender Fuel Capacity (oil/coal)10 tons13 tons
Minimum weight of rail (calculated)48 lb/yard53 lb/yard64 lb/yard83 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter63"69"73"74"
Boiler Pressure175 psi185 psi200 psi220 psi
Cylinders (dia x stroke)19" x 24"19" x 24"19" x 26"21" x 28"
Tractive Effort20457 lbs19745 lbs21858 lbs31204 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.25 4.81 5.28 4.78
Heating Ability
Firebox Area140 sq. ft171 sq. ft168 sq. ft175 sq. ft
Grate Area18.30 sq. ft17.80 sq. ft29.75 sq. ft33.50 sq. ft
Evaporative Heating Surface1646 sq. ft1912 sq. ft2303 sq. ft2796 sq. ft
Superheating Surface
Combined Heating Surface1646 sq. ft1912 sq. ft2303 sq. ft2796 sq. ft
Evaporative Heating Surface/Cylinder Volume208.99242.77269.92249.09
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation3203329359507370
Same as above plus superheater percentage3203329359507370
Same as above but substitute firebox area for grate area24500316353360038500
Power L15473747589648874
Power MT416.07520.27513.30393.53

Reference


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