Six years later, in 1925, the Lima Locomotive Works designed a new locomotive by adding a fifth set of drivers and increasing the cylinders of its "Berkshire" and created a .true. 2-10-4. The first railroad to take delivery of this new .super power. locomotive was the Texas & Pacific Railway in 1925. Because the AT&SF design was merely an experiment no name had been attached to the 2-10-4 wheel arrangement in 1919. After the delivery, in 1925, the 2-10-4 was given the name "Texas" for the Texas & Pacific.
Like the "Berkshires", Lima kept the drivers on the "Texas" type locomotive low (63.5 inches) to provide good traction, but it caused counterbalancing problems. The ten-coupled drivers required huge piston thrusts, which necessitated massive rods and valve gear. These heavy rods and valve gear required large counter-balance weights on the wheels. The 60 to 63.5 inch diameters of the early classes of the "Texas" locomotive were too small to carry enough weight and that caused them to ride rough.
The Chesapeake & Ohio Railroad was one of the railroads that served as a member of the .Advisory Mechanical Committee.. This committee was made up of motive engineers from the Van Sweringens owned: C&O, Erie, Nickel Plate and Pere Marquette railroads. In need of a new freight locomotive design, this group put an Erie "Berkshire" with 70-inch diameter drivers through a series of test. After careful evaluation of the results it designed a new high driver 2-10-4, which essentially was a stretched Erie "Berkshire" with 69-inch diameter drivers.
The introduction of this high driver locomotive set a new standard for the "Texas" locomotive and all new orders for the 2-10-4s included high drivers. Even the Pennsylvania Railroad, when in dire need of motive power during World War II and not allowed to build its own designs, turned to the C&O's design and built 125 of them.
One exception to this was the Santa Fe 2-10-4s. They were built with 74-inch diameter drivers. The C&O 2-10-4s were heavier and could exert more tractive effort. However, the Santa Fe 2-10-4s were faster. No other 2-10-4s were built with drivers this large.
There were eleven North American railroads that used 430 of the "Texas" 2-10-4 locomotives. There are nine examples of this locomotive that survive today and are on display as shown below.
The USA also built "Texas" type locomotives for other countries. Both Baldwin and ALCO built about 20 2-10-4s for the EdF (Estrada de Ferro) Central do Brazil Railroad. They were 1 meter gauge with 48 inch drivers. They weighed about half of their standard gauge counterparts. They were last used around 1990 on the EdF Donna Therisa Christina Railroad in Brazil. The EdF Donna Therisa Christina Railroad was one of the last places in the world to regularly run mainline steam. It is on the southern coast of Brazil, centered on Tubearo south of Puerto Alegri. See this page for a photo.
|Specifications for No. 5000 "Madam Queen"|
|Length:||111' - 11"|
|Weight on Drivers:||350,400 lbs|
|Locomotive Weight:||502,600 lbs|
|Locomotive & Tender Weight:||877,600 lbs|
|Grate Area:||121.7 sq ft|
|Cylinders:||(2) 30" dia. x 34" stroke|
|Boiler Pressure:||300 psi|
|Tractive Effort:||95,584 lbs (using c=0.7 in the TE equation)|
|Tender Capacity:||20,000 gals. of water and 7,107 gals. of oil.|
|Note: The locomotive and tender weighed 602,500 lbs without water and coal.|
From the very beginning, number 5000 was nicknamed "Madam Queen". It was this single locomotive that proved the value of the four-wheel trailing truck and high drivers on 2-10-4s and led the AT&SF to order 35 of them starting in 1938. "Madam Queen" operated heavy freight and ran up 1,700,000 miles before it was retired in 1953.
"Madam Queen" was donated to the City of Amarillo, Texas by the AT&SF in 1957. It received little upkeep and was deteriorating badly when, in 1992, a small group of railroad enthusiasts formed the Texas Panhandle Railroad Historical Society of Amarillo, Texas. The TPRHS, with the aid of the City of Amarillo, undertook a project to restore number 5000. The cosmetic restoration was completed in the summer of 1996 and the society continues to maintain the locomotive.
This one-of-a-kind locomotive is on display at the Santa Fe Park near the AT&SF Depot in Amarillo, TX.
|Railroad||Number of Locomotives by Builder||From Other Railroads|
|Atchison, Topeka & Santa Fe||37|
|Bessemer & Lake Erie||10||37|
|Canadian Pacific||1 CPR 36-MLW|
|Chesapeake & Ohio||40|
|Chicago, Burlington & Quincy||18|
|Chicago Great Western||18||18|
|Duluth Missabe & Iron Range||18 B&LE|
|Kansas City Southern||10|
|Pennsylvania Railroad||125 PRR|
|Texas & Pacific||70|
|No.||Class||F.M. Whyte||Gauge||Railroad Line||Location||Status||Builder Info||Notes|
|5931 (5934)||T1c||2-10-4||4'-8½"||CPR||Heritage Park Historical Village, Calgary, AB||display||Montreal Locomotive Works #76222, 1949||Displayed near entrance|
|5935||T1c||2-10-4||4'-8½"||CPR||Canadian Railway Museum, Delson, QC||display||Montreal Locomotive Works #76226, 1949|