Intermountain Railway Company HO Scale AC-12 4-8-8-2 Locomotive - Southern Pacific

Intermountain Railway Company HO 4-8-8-2 AC-12 Locomotive -Southern Pacific #4292

Southern Pacific Railroad's AC-12 class of cab forward steam locomotives was the last class of steam locomotives ordered by Southern Pacific. They were built by Baldwin Locomotive Works during World War II, with the first, number 4275, entering service on October 27, 1943, and the last, 4294, on March 19, 1944.

SP used the AC-12s for a little over a decade with the first retirements occurring on April 5, 1955, and the last on September 24, 1958. All but one of this class, number 4294, was scrapped.

In steam locomotive design, a cab forward design will typically have the driver's compartment placed immediately forward of the firebox at the very front of the engine while the fireman's station remains on the footplate behind the firebox (for obvious reasons). This type of design was widely, though not commonly, used throughout Europe in the first half of the 20th century, often in conjunction with an enclosed body design and/or streamlining.

In contrast however, the best known example of the cab-forward design in the United States, the Southern Pacific Cab-Forward (also known as "Cab-in-fronts") placed the cab at the front by the simple expedient of turning the entire locomotive, minus the tender, by 180 degrees, an arrangement made possible by burning fuel oil instead of coal.

The cab forward design was widely used by the Southern Pacific Railroad, which developed it to deal with the peculiar problems of its routes. The 39 long tunnels and nearly 40 miles (64 km) of snow sheds of the Sierra Nevada Mountains could funnel dangerous exhaust fumes back into the crew compartment of a conventional locomotive. After a number of crews nearly asphyxiated, someone had the idea of running his locomotive in reverse. This meant that the tender was leading the train, which introduced new problems. The tender blocked the view ahead and put crewmen on the wrong sides of the cab for seeing signals. The tenders were not designed to be pushed at the lead of the train, which limited speeds. Southern Pacific commissioned Baldwin Locomotive Works to build a prototype cab-forward locomotive, then ordered more before the prototype had even arrived.

All of the cab-forwards were oil-burning locomotives, which meant there was little trouble involved putting the tender at what would normally be the front of the locomotive. The oil and water tanks were pressurized so that both would flow normally even on uphill grades. Visibility from the cab was superb, such that one crewman could easily survey both sides of the track. There were concerns about what would happen to the crew in the event of a collision, and at least one fatal accident occurred on the Modoc Line when a moving locomotive struck a flat car. Turning the normal locomotive arrangement around also placed the crew well ahead of the exhaust fumes, insulating them from that hazard. One problematic aspect of the design, however, was the routing of the oil lines; because the firebox was located ahead of the driving wheels (instead of behind them, the usual practice), oil leaks could cause the wheels to slip. A nuisance under most conditions, it resulted in at least one fatal accident. This occurred in 1941 when a cab-forward with leaking steam and oil lines entered the tunnel at Santa Susana Pass near Los Angeles. The tunnel was on a grade, and as the slow-moving train ascended the tunnel, oil on the rails caused the wheels to slip and spin. The train slipped backwards and a coupler knuckle broke, separating the air line, causing an emergency brake application and stalling the train in a tunnel that was rapidly filling with exhaust fumes and steam. The oil dripping on the rails and ties then ignited beneath the engine cab, killing the crew.

No other North American railroad ordered cab-forward locomotives. Built to deal with difficult terrain, these remarkable locomotives became an easily recognizable symbol of the Southern Pacific. One example of the type, Southern Pacific 4294, is kept at the California State Railroad Museum in Sacramento, California. It is a 4-8-8-2 locomotive and is the only one to escape being scrapped.

Other AC-12 4-8-8-2 Locomotive Items: Railroading On DVD! - Southern Pacific Cab Forward Collection

Other Southern Pacific Items: Athearn HO Scale SD70M Locomotive - Southern Pacific / Athearn HO Scale AC4400 Locomotive - Southern Pacific / MTH HO Scale GS-4 4-8-4 Locomotive - Southern Pacific/ Bachmann HO Scale 4-8-4 GS-4 Locomotive - American Freedom Train #4449 / Bachmann HO Scale 4-8-4 GS-4 Locomotive - Southern Pacific (War Baby) / Athearn HO Scale C44-9W Locomotive - Southern Pacific / Athearn HO Scale GP40-2 Locomotive - Southern Pacific / Athearn HO Scale Bay Window Caboose - Southern Pacific

Other Intermountain Railway Company Items: Intermountain Railway Company HO Scale F7 Locomotive - Rock Island / Intermountain Railway Company 40ft Box Car - Burlington Northern

Intermountain Railway Company HO Scale F7 Locomotive - Rock Island

Intermountain Railway Company HO Scale Ready To Run FP7A Locomotive - Rock Island

The EMD F7 was a 1,500 horsepower (1,100 kW) Diesel-electric locomotive produced between February 1949 and December 1953 by the Electro-Motive Division of General Motors (EMD) and General Motors Diesel (GMD). It succeeded the F3 model in GM-EMD's F-unit sequence, and was replaced in turn by the F9. Final assembly was at GM-EMD's La Grange, Illinois plant or GMD's London, Ontario facility. Although originally promoted as a freight-hauling unit by EMD, the F7 was also used in passenger service hauling such trains as the Santa Fe's El Capitan.

A total of 2,366 cab-equipped lead A-units and 1,483 cabless booster or B-units were built. The F7 was the fourth model in GM-EMD's successful line of F-unit locomotives, and by far the highest-selling cab unit of all time.

Many F7s remained in service for decades, as railroads found them economical to operate and maintain. However the locomotive was not very popular with the yard crews who operated them in switching service because they were difficult to mount and dismount, and it was also nearly impossible for the engineer to see hand signals from his ground crew without leaning way outside the window. As most of these engines were bought and operated before two-way radio became standard on most American railroads, this was a major point of contention. In later years, with the advent of the “GP” type “road switchers”, Fs were primarily used in “through freight” and “unit train” service where there was very little or no switching to be done on line of road.

The F7 can be considered the zenith of the cab unit freight Diesel, as it was ubiquitous on North American railroads until the 1970s (longer in Canada). The F7 design has become entrenched in the popular imagination due to it having been the motive power of some of the most famous trains in North American railroad history.

The F7 replaced the F3, differing primarily in internal equipment (mostly electrical) and some external features. The F7 was eventually succeeded by the more powerful but mechanically similar F9.

The Chicago, Rock Island and Pacific Railroad (CRI&P RR) (reporting marks RI, ROCK) was a Class I railroad in the United States. It was also known as the Rock Island Line, or, in its final years, The Rock.

The Rock Island jointly operated the Golden State Limited (Chicago—Kansas City—Tucumcari—El Paso—Los Angeles) with the Southern Pacific Railroad (SP) from 1902–1968. The name was shortened to the Golden State after 1948's modernization. Another joint venture with the SP, the Golden Rocket, was planned to enter service in 1948 but instead became "the train that never was," after SP withdrew from the joint train operating agreement. The Golden Rocket's uniquely-colored livery was placed in Golden State service instead.

In 1937, the Rock Island introduced Diesel power to its passenger service, with the purchase of six lightweight Rocket streamliners.

The railroad operated a number of trains known as Rockets serving the Midwest, including the Rocky Mountain Rocket (Chicago—Omaha—Lincoln—Denver—Colorado Springs), the Corn Belt Rocket (Chicago—Des Moines—Omaha), the Twin Star Rocket (Minneapolis—St. Paul—Des Moines—Kansas City—Oklahoma City—Fort Worth—Dallas—Houston), the Zephyr Rocket (Minneapolis—St. Paul—Burlington—St. Louis) and the Choctaw Rocket (Memphis—Little Rock—Oklahoma City—Amarillo—Tucumcari).

The Rock Island did not join Amtrak on its formation in 1971, and continued to operate its own passenger trains. After concluding that the cost of joining would be the same as operating the two remaining intercity roundtrips (the Chicago-Peoria Peoria Rocket and the Chicago-Rock Island Quad Cities Rocket), the railroad decided to "perform a public service for the state of Illinois" and continue intercity passenger operations. Both trains were discontinued on December 31, 1978.

The Rock Island also operated an extensive commuter train service in the Chicago area. The primary route ran from LaSalle Street Station to Joliet along the main line, and a spur line, known as the "suburban branch" to Blue Island. These services started to receive financial backing in 1976 from the newly formed Regional Transportation Authority. Today these lines are operated as part of Metra, and are known as the Rock Island District.

See Other HO Scale F7 Locomotives: Athearn HO Scale F7 Locomotive - Rock Island / Athearn HO Scale F7A Diesel Locomotive - Burlington Northern / Proto 2000 HO Scale EMD F7A-B Locomotives - Canadian Pacific / Proto 2000 Diesel EMD F7A-B Set Powered - HO Scale - Santa Fe / Walthers HO Scale F7 Locomotive - Santa Fe

See Other Rock Island Items: Athearn HO Scale F7 Locomotive - Rock Island / Bachman HO Scale 2-6-0 Mogul Locomotive - Rock Island / Bachmann Spectrum 2-8-0 Consolidation HO Scale Locomotive - Rock Island

Intermountain Railway Company 40ft Box Car - Burlington Northern

Intermountain Railway Company HO Scale Ready To Run 40' 12 Panel Box Car - Burlington Northern

Product Description

HO RTR 40' 12 Panel Box, BN

Boxcars can carry most kinds of freight. Originally they were hand-loaded, but in more recent years mechanical assistance such as forklifts have been used to load and empty them faster. Their generalized design is still slower to load and unload than specialized designs of car, and this partially explains the decline in boxcar numbers since World War II. The other cause for this decline is the container. A container can be easily transshipped and is amenable to intermodal transportation, transportable by ships, trucks or trains, and can be delivered door-to-door. In many respects a container is a boxcar without the wheels and underframe.

Even loose loads such as coal, grain and ore can be carried in a boxcar, with boards over the side door openings, at later times grain transport used metal reinforced cardboard which was nailed over the door and could be punctured by a grain auger for unloading. This was more common in earlier days; it was susceptible to losing much loading during the journey, and damaged the boxcar. It was also impossible to mechanically load and unload. Grain can also be transported in boxcars designed specifically for that purpose; specialized equipment and procedures are required to load and unload the cars.

Livestock can be transported in a boxcar (which was standard practice in the U.S. until the mid-1880s), but there is insufficient ventilation in warm weather. Specially-built or converted stock cars are preferable. Insulated boxcars are used for certain types of perishable loads that do not require the precise temperature control provided by a refrigerator car. Circuses used boxcars to transport their workers, supplies, and animals to get from town to town.

Historically automobiles were carried in boxcars, but during the 1960s specially built autoracks took over; these carried more cars in the same space and were easier to load and unload. The automotive parts business, however, has always been a big user of the boxcar, and larger capacity "high cube" cars evolved in the 1960s to meet the auto parts industry's needs. Special boxcars carry newsprint paper and other damage-sensitive cargo.

While not holding the dominant position in the world of railborne freight that they had before World War II, the boxcar still exists and is used in great numbers around the world.

See Other HO Scale Burlington Northern Items: Athearn HO Scale Cupola Caboose - Burlington Northern / Athearn HO Scale F7A Diesel Locomotive - Burlington Northern / Trainline EMD GP9M HO Scale Locomotive - Burlington Northern / Athearn HO Scale SD60M Locomotive - Burlington Northern / BNSF / Athearn HO Scale SD60M Locomotive - Burlington Northern Santa Fe

See Other HO Scale Box Cars: Athearn 50ft Ice Reefer Box Car - Santa Fe (Scout) / Trainline HO Scale 50ft Plug Door Box Car - Western Pacific / Athearn HO Scale 50ft Combo Door Box Car - Union Pacific