The Northern type locomotives on the Union Pacific were built by Alco Schenectady Works in 3 classes between August 1937 and December 1944. The first class, designated FEF-1, for Four Eight Four, comprised numbers 800-819. Fitted with 77-inch drivers and a 300-pound boiler pressure, UP was impressed by their performance and took delivery of 15 additional 4-8-4 locomotives in Aug-Oct 1939, numbers 820-834. These locomotives were equipped with 80-inch drivers and larger 14-wheel centipede style tenders with a 23,500 gallon capacity and were class FEF-2. In Dec 1944, 10 additional 4-8-4 locomotives were delivered, these equipped with low-backpressure double stacks, numbered 835-844, and designated FEF-3. All three classes developed 63,800 lbs of tractive effort.
Throughout their service careers multiple modifications were made, including conversion to oil, feedwater heater systems, addition of smoke lifters (designated Wind Wings on UP drawings) and a Mars light, and replacement of stacks from singles to doubles and even triple stacks. UP 844, the final steam locomotive delivered to UP, has been in continuous service on Union Pacific since it was built in 1944; renumbered from UP 844 to UP 8444 between June 1962 and June 1989.
In this production, BLI is modeling the FEF-3 Class with these notable features:
Accurately modeled FEF-3 double stack and triple stack – prototypically accurate for each road number
Accurately modeled turret casing
Individual side rods
Centipede-style oil tenders with finely detailed oil inserts. #844 has the Heritage Fleet containment dam, other road numbers do not.
Options for Worthington and Sellers FWH
Wind Wings on all FEF-3 models in this production
Cast steel Commonwealth pilot with options for a front coupler or pilot insert
Walschaerts Valve Gear
#844 in modern appearance without Mars light. Other SKU’s do have the Mars light.
FEF-3 class road numbers are 835-844
Features Chart for Union Pacific FEF-3 2021 Production:
Timeframe
Stack
FWH
Wind Wings
Mars Light
Rear Light in Tender Body Shell
6640 Union Pacific 4-8-4, Class FEF-3, #844
2013-Today
FEF-3 Double
WSA
Yes
No
Yes
6641 Union Pacific 4-8-4, Class FEF-3, #843
1952-1957
FEF-3 Double
WSA
Yes
Yes
Yes
6642 Union Pacific 4-8-4, Class FEF-3, #835
1952-1959
FEF Triple
WSA
Yes
Yes
No
6643 Union Pacific 4-8-4, Class FEF-3, #838
1952-1959
FEF-3 Double
Sellers
Yes
Yes
Yes
6644 Union Pacific 4-8-4, Class FEF-3, #842
1952-1959
FEF-3 Double
Sellers
Yes
Yes
No
6645 Union Pacific 4-8-4, Class FEF-3, #836
1949-1952
FEF-3 Double
Sellers
Yes
Yes
No
6646 Union Pacific 4-8-4, Class FEF-3, #840
1946-1949
FEF-3 Double
Sellers
Yes
Yes
Yes
6647 Union Pacific 4-8-4, Class FEF-3, Unlettered
1952-1959
FEF-3 Double
WSA
Yes
Yes
Yes
Industry-leading Model Features:
ALL-NEW Paragon4 Sound & Control System
Synchronized Puffing Smoke with Chuff Sound
Variable Puffing Smoke Intensity and timing
Separate Whistle Smoke Feature – smoke streams from whistle area when whistle is blown
Integral DCC Decoder with Back EMF for Industry Best Slow Speed Operation in DC and DCC
Precision Drive Mechanism engineered for continuous heavy load towing and smooth slow speed operation
5-Pole Can Motor with Skew Wound Armature
Heavy Die Cast Boiler, Tender Body, and Chassis for Increased Tractive Effort
Premium Caliber Painting with Authentic Paint Scheme
Prototypical Light Operation with Separately Controllable Headlight, Reverse Light (where applicable), Cab Light, Mars Light (where applicable), Front Numberboards, Front Marker Lights, and Rear Tender Deck Light
Factory-installed Engineer and Fireman Figures
Prototypically Accurate Details for Each Road Number
Many Separately Applied Details such as Handrails, Ladders, Piping, Whistle, and Brass Bell
Equipped with Rubber Traction Tires for Increased Pulling Power
Recommended Minimum Radius: 22 inches
Accurate Prototypical Sounds for the UP FEF-3 Northern
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