COLA Consists 1950-1954
Daily Service Consist Evolution
Discussions for inaugurating post-WWII daily service began in 1945 for the UP-C&NW City of Los Angeles and City of Portland trains, along with the UP-C&NW-SP City of San Francisco. By early 1946, the three operating partners had formulated plans to order enough new passenger equipment to create the desired five-consist rotation for each of the West Coast “Cities” trains.
In February 1946, UP ordered 65 cars plus an additional 15 sleeping cars, and in March 1946, C&NW ordered 16 cars along with 4 sleepers in May 1946, all from the American Car & Foundry Company. SP also ordered 9 cars from Pullman-Standard in June 1946 as their contribution to the COSF.
In the flurry to upgrade existing passenger trains, as well as to inaugurate new train services to meet the post-war travel demand, a huge backlog of deliveries was created due to the major car builders being inundated with a large amount of car orders from the nation’s railroads. Great Northern, which had ordered equipment for their new lightweight Empire Builder in May 1944, received the first new post-war passenger cars in early 1947.
The other railroads would have to wait while the car builders produced passenger cars as quickly as possible (along with a backlog of freight car orders). The UP Cities trains were no exception, and with delays expected to be more than two years, UP was compelled to inaugurate daily service with equipment from existing UP, C&NW and SP car pools.
On May 14, 1947, COLA daily service was initiated with a four-consist rotation, which included reducing the 7th and 9th Trains to 13 cars each, and by creating two new consists, the 16th and 17th Trains. These trainsets were a stop-gap measure until new cars could be delivered to fully upgrade the four consists, as well as to create a 5th consist for better servicing availability.
Meanwhile, in February 1948, UP also ordered 50 new sleeping cars from the Edward G. Budd company, as well as 50 new coaches from Pullman-Standard Car Manufacturing Company.
COLA Five-Consist Rotation Begins
After having to wait nearly three years, the new AC&F equipment began arriving in January 1949. The deliveries were spread throughout the year with the last of the orders completed in October. In addition, the Budd-built Pacific-class sleeping car deliveries started in December 1949 and continued into mid-1950.
Finally, there was enough new passenger equipment to upgrade and expand COLA service (including the new 21st Train) to the five-consist rotation beginning on March 22, 1950.
Previously, with only four consists, the COLA trains had to “double out” both terminals (this means that after the morning arrival, the trains had to be turned and serviced prior to their departure later that same day). With five consists, the COLA trains were now able to stay overnight at UP’s coach yard facility in East Los Angeles, although the trains still had to double out daily at Chicago.
The five-consist rotation started with existing coach cars, but the consists were upgraded with the availability of 50 new Pullman-Standard 5400-series coaches delivered in June through October 1950. In May and June 1951, UP ordered an additional 42 cars, and C&NW ordered 6 more cars in August, all from AC&F for delivery in 1953. At this point, the COLA consists were relatively constant, but that was about to change with the first dome car deliveries coming in December 1954.
COLA Motive Power 1950-1954
In 1947-1949, UP acquired passenger diesels from American Locomotive Company (14 units), GM’s Electro-Motive Division (27 F3 units) and Fairbanks-Morse (10 units). The majority of these engines were used to help dieselize secondary trains and typically did not run on the City of Los Angeles, whose consists were firmly in the hands of paired EMD E-units (with an F-M unit mixed in as needed).
Around late 1948, the COLA 4,000 HP diesel sets were supplemented with a 1,500 HP F3 (usually a B-unit), but these 5,500 HP locomotives still required helpers to ascend the various mountain passes.
Meanwhile, EMD had been developing a new and improved passenger diesel, the model E8, which offered 2,250 HP, improved main generators and higher output traction motors, and, for the first time in E-unit production, dynamic braking. UP ordered five AB sets of E8s (4,500 HP) in January 1950, which were delivered in May through August.
The preferred motive power arrangement for the COLA was two E8s along with an E7 or E6 for a 6,500 HP combination, although this wasn’t always possible, as the units also ran on other Cities trains as well.
In June 1952, UP received a single E8, engine 925, which was built under EMD Repair Order 8012. C&NW E7 5007B had been wrecked while leading the COSF in the catastrophic rear end collision with the COLA at Wyuta, Wyoming, on November 12, 1951. It was subsequently purchased by UP and traded-in to EMD as salvage value towards a new locomotive.
Concerning the potential for the wrecked E7 to be somehow “rebuilt,” it should be noted that the E8 was designed with the diesel engines facing each other, rather than being oriented in the same direction as with the earlier E-units, a major change that required a completely new chassis and carbody side truss construction. Also, the entire rooftop cooling system was redesigned for the E8 model.
The E3, E6 and E7 main generators, traction motors and diesel engines were not usable in a 2,250 horsepower E8, so the trucks were the only major components that could’ve been salvaged for reuse, and these would’ve simply gone into EMD’s “unit exchange pool.” Except for various minor components that may have been salvaged, the 2,250 HP 925 was entirely new, although it did retain its original EMD builder’s number (1966) for tax purposes.
In October 1952, UP ordered 22 additional E8s from EMD, with delivery coming in February through May 1953. Also, in February 1953, UP ordered 9 additional E8s that came in April and May. These 31 new engines increased the total amount of E8s on the railroad to 42, and provided UP the flexibility to reassign all their passenger F3s to freight service (they were renumbered and re-geared at this time).
After more than five years experience with F3s in passenger service, UP decided that the E8 model best suited the operating department’s requirements for passenger service, including steam generators in every unit (compared to the F3s which only had boilers in their B-units). Now, except for an occasional E6 or E7 mixed in, the new standard for powering the Cities trains was a 6,750 HP three-unit set of E8s.
Things began to change on the UP again in 1954 with the delivery of EMD’s new 2,400 HP E9 model and the first of the new amazing Astra-Dome passenger cars in December. These changes will be covered in the next installment.
Here now are some photos showing the 1950-1954 motive power in action on the City of Los Angeles, with captions after each one.
This company PR photo depicts No. 104, the eastbound City of Los Angeles, approaching Mile Post 949 in Echo Canyon, about 3 miles east of Echo, Utah. The approximate date is 1951 and shows COLA motive power in transition; E7 989 (ex 989J, ex 907A) is leading E8 926B (delivered in May 1950), along with a passenger F3 B-unit for a 5,750 HP total, enough to allow the train to proceed unassisted up the hill.
When the COLA became a daily service and only a 4,000 HP pair of E-units was in charge, the train required a helper engine (typically steam power) to ascend the 1.16 percent ruling grade from Ogden to Wahsatch (where the helper would be cut off).
Note that the E7’s original slotted pilot has been replaced with an enclosed coupler pilot, which was probably better at dispersing snow in the winter months. The third car in this day’s train is one of UP’s stream-styled heavyweight coaches, especially unusual given that the new Pullman-Standard Leg Rest coaches had been on the property for about a year. UP Photo.
The company photographer has train No. 104, the eastbound COLA, stopped under cantilever signal 9662 for an official portrait in Upper Weber Canyon, near Mile Post 966, about 2 miles east of Morgan, Utah, circa 1951. Although the new E8s had been delivered about a year earlier, it was not always possible to have two of the units working together, as just a single E8 is included in today’s 6,250 HP line-up.
The lead unit, E6 995 (ex 956A, ex 8-M-2) has been upgraded with several 1949-era modifications, including large train indicator boxes, nose door with lowered headlight, a Mars oscillating light in the upper location, filtered carbody vents for better engine room ventilation, a 1,400 gallon under-frame boiler water tank, and a recently-applied enclosed coupler pilot.
In 1951-1952, UP equipped all of its E6 and E7 cab units with this type of pilot when their original retractable buffer-coupler-draft gear assemblies were replaced with fixed couplers, such as found on the E8 A-units. The second car in the consist is C&NW baggage-dorm 9303 (originally LA-101), identified by its higher roof profile and the double aluminum trim strips on the car side. UP Photo.
Credit Dick Kindig for recording this excellent photo of No. 104, the eastbound City of Los Angeles, crossing the Devil’s Gate bridge over the Weber River and highway U.S. 30 South near Gateway, Utah, on October 12, 1953. The view nicely depicts the preferred 6,750 HP COLA motive power after UP took delivery of 31 new E8s in February through May 1953.
The 12-car consist features a new AC&F 5631-5638 series baggage-express car, a 1949 bagg-dorm, a pair of Leg Rest coaches, the three standard mid-train cars (cafe-lounge, full diner, club-lounge), and five trailing sleepers including a Pennsy sleeper-obs-lounge car bringing up the hind end (Samuel Vaughn Merrick in UP colors). Richard. H. Kindig photo.
This concludes Jeff Koeller's coverage of the 1950-1954 City of Los Angeles train, so many thanks to him for all of the great information and photos!
Checking the COLA schedules through Victorville in these years (these trains did not stop there), the westbound train passed through town at 6:03 am, and the eastbound train came through at 7:51 pm, but during the summer months of 1951 and 1952 (late April through late September), they came through at 5:03 am and 7:51 pm.
I can avoid modeling these trains (they require mostly brass passenger cars) by not operating during those early morning and late evening hours.