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BNSF RAILWAY ...im Modellbau - Rollmaterial - Steamlokomotives - Alco 4-8-8-4 BIG BOY #4014 UP

Rollmaterial > Steamlokomotives > ALCO > 4-8-8-4


4-8-8-4 Big Boy w/DCC & Sound, UP Promontory #4014

Steam HO 4-8-8-4 Big Boy w/DCC & Sound*, UP Promontory #4014.

Hersteller: Athearn Genesis

* = Tsunamie2

HO 4-8-8-4 Big Boy w/DCC & Sound, UP Promontory #4014

Detailed Information

  •    Excursion Version with oil tender from UP 3985 per prototype configuration

  •    Reporting marks only on rear tender face per prototype 2019 configuration

  •    In service appearance

  •    Commemorative box

  •    Chalk marking “Big Boy” decal included (not applied).


  •    Great Race to Promontory version with oil tender from UP 3985 per prototype configuration

  •    Reporting marks only on rear tender face per prototype 2019 configuration

  •    Freshly shopped shiny appearance

  •    Commemorative box

  •    Chalk marking “Big Boy” factory applied to smoke box face, per prototype during summer 2019. This marking is a subtle nod to     history and ALCO legend. See details on the last page of this order sheet.

Big Boy No. 4014 was delivered to Union Pacific in December 1941. The locomotive was retired in December 1961, having traveled 1,031,205 miles in its 20 years in service. Union Pacific reacquired No. 4014 from the RailGiants Museum in Pomona, California, in 2013, and relocated it back to Cheyenne to begin a multi-year restoration process. In 2019 UP #4014 was brought back to life. It had been almost 60 years and multiple generations since the last time a 4-8-8-4 Big Boy operated under it’s own power.


  •    4004: Holliday Park

  •    4005: Forney Transportation Museum

  •    4006: Museum of Transportation

  •    4012: Steamtown National Historic Site

  •    4017: National Railroad Museum

  •    4018: Museum of the American Railroad

  •    4023: Kenefick Park


  •    As delivered from ALCO in service 1940s era

  •    Coal Tender

Twenty-five Big Boys were built exclusively for Union Pacific Railroad, the first of which was delivered in 1941. The locomotives were 132 feet long and weighed 1.2 million pounds. Because of their great length, the frames of the Big Boys were “hinged,” or articulated, to allow them to negotiate curves. They had a 4-8-8-4 wheel arrangement, which meant they had four wheels on the leading set of “pilot” wheels which guided the engine, eight drivers, another set of eight drivers, and four wheels following which supported the rear of the locomotive. The massive engines normally operated between Ogden, Utah, and Cheyenne, Wyo.

There are seven Big Boys on public display in various cities around the country. They can be found in St. Louis, Missouri; Dallas, Texas; Omaha, Nebraska; Denver, Colorado; Scranton, Pennsylvania; Green Bay, Wisconsin; and Cheyenne, Wyoming.

Source Union Pacific Railroad


  •    As delivered from ALCO in service 1940s era

  •    Coal Tender


  •    Fully-assembled and ready-to-run

  •    DCC-ready features Quick Plug™ plug-and-play technology with 21-pin NEM connector

  •    Scaled from prototype resources including drawings, field measurements, photographs, and more

  •    Accurately-painted and –printed paint schemes

  •    Full cab interior with boiler backhead with printed gauges

  •    Individually applied piping, valves, generators, etc.

  •    Operating eccentric cranks on both sides operating in correct direction

  •    Headlights and indicator number boxes (number boards) with directional light change

  •    Five pole, skewed armature motor with dual flywheels for smooth operation

  •    Pivoting front and rear engines for negotiating 22” radius curves

  •    See-through running boards

  •    Smoke unit ready with no soldering required

  •    See through cab windows

  •    McHenry scale knuckle couplers - Kadee compatible

  •    Genesis driveline with 5-pole skew wound motor, precision machined flywheels, and multi-link drivetrain

  •    Wheels with RP25 contours operate on all popular brands of track

  •    LED Lighting for realistic appearance

  •    Heavy die-cast frame for greater traction and more pulling power

  •    Packaging securely holds for the model for safe storage


  •    Authentic recordings from UP #4014 under steam recorded by Soundtraxx summer 2019

  •    Onboard DCC decoder with SoundTraxx Tsunami2 sound

  •    Decoder controlled smoke

  •    Flickering firebox LED with effect

  •    Sound units operate in both DC and DCC

  •    Chuff, whistle, and bell sounds work in DC

  •    All functions NMRA compatible in DCC mode

  •    Precision slow speed control

  •    Many functions can be altered via Configuration Value (CV) changes

  •    CV chart included in the box


The Union Pacific’s Overland Route, the eastern portion of the Transcontinental Railroad, was built west from Omaha, across Nebraska and Wyoming, and on into Utah. The steepest grade was the eastbound climb on the Echo Canyon line through the Wahsatch Mountains just east of Ogden, Utah. Forty 4-6-6-4 Challenger locomotives were acquired in 1936 and 1937 to move fast freight over the grades in Utah and Wyoming. They were rated at 4,290 tons across Wyoming, but were limited to 3,100 tons eastbound through Echo Canyon.

Union Pacific wanted something that could make the same speeds as the Challengers but could carry the entire 4,290-ton train over the Wahsatch Mountains without a helper. The easiest solution was to scale up the successful Challenger design by adding another pair of drivers to each half of the locomotive thus making a 4-8-8-4.

In 1941 UP placed an order for twenty 4-8-8-4’s, numbered 4000 through 4019, with the American Locomotive Works. Each engine cost $265,174. According to legend an unidentified machinist at the ALCO plant is responsible for the name “Big Boy”, having scrawled the name in chalk on a partially completed locomotive.

The Big Boys were exactly what the railroad wanted. They were coal burners with 68-inch drivers, 135,375 pounds of tractive effort and 6,000 horsepower. They started service on the line from Ogden to Green River, Wyoming and their operating range soon increased to cover the line all the way to Cheyenne.

Traffic during WWII resulted in five more Big Boys, numbered 4020 through 4024, being built in 1944. These versions were slightly heavier than the original order due to wartime materials restrictions.Despite the influx of diesel locomotives following WWII, the Big Boys and Challengers remained the prime power on the Overland Route. They also saw service as helpers, leading gas turbines and diesels over Sherman Hill. They remained active through the 1950’s and weren’t retired until the early 1960’s. By then the first twenty units had been run well over one million miles.











LED Lighting


Union Pacific (UP)


22 inch

Minimum Age Recommendation:  

14 years

Is Assembly Required:  


Passender Wasser Tender wird gesucht. Mehr Infos findet man DA

20.03.2022 (21.10.2021)
So da niemand ein Angebot gemacht hat auf meine Suche (siehe oben: 13.02.2021) für passende Wasser Tender. Habe ich welche geordert. Dies bei ScaleTrains. Mehr Infos davon HIER.


So endlich ist der Grosse Junge bei mir eingetroffen.

Auf den ersten Blick sieht alles sehr gut aus und das Modell ist so wie das Original.  Die Ausführung, so wie er im Mai 2019 nach 5 jähriger Totalrestauration und zu den Feierlichkeiten – 150 Jahre Union Pazific Präsentiert wurde. Sowie er diverse Fahrten so gemacht hat.

Er ist sehr filigran mit Details versehen und hat ein ordentliches Gewicht. Würde sagen das er nahe an 1000g daran ist.  Gewogen mit der Wage Komplett 1082g. Wohlverstanden nur die Lok ohne Tender. Der Sound ist nicht zu laut ab Werk eingestellt. Das Licht dürfte noch eine Spur Heller sein. Das einzige was an Funktionen noch fehlt ist der Synchron Dampf.

Man merkt einen guten Unterschied vom Tsunamie Sound Decoder zum Tsunamie2 Sound Decoder. Sobald beim Tsunamie2 die entsprechende Fahrstufe, Geschwindigkeit erreicht ist merk man wie die entsprechende Last weg geht. Sprich man hört merklich das beim beschleunigen. Diese abnimmt beim erreichen der entsprechenden Geschwindigkeit.

Wie viel er vermag zu ziehen. Weiss ich nicht da ich dies nicht Testen und Ausprobieren kann. Denke aber das er so an die 100 50' Box Cars ziehen vermag ohne Fremdhilfe und Unterstützung.

Den Preis von USD 769.98 (CHF 830.00) ist er wert. Das ohne Haftreifen, wie andere Hersteller ihrem Grossen Jungen in Spur H0 verpassen und dann noch mit einem Mittelschleifer...

Zum Nachtessen habe ich mir weisse Bohnen mit Tomatensauce, reichlich Speckwürfel mit einer Zwiebel und 4 Knoblauchzehen. Gut angebraten und unter die Weissen Bohnen mit Tomatensauce gemischt. Dazu habe ich mir einen grünen Salat gemacht.
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Habe jetzt den zusehenden Film 3x komplett neu geschnitten. Jedes mal ist die Qualität so wie sie zusehen ist. Wie so es ab und an rote Balken hat und da in grau verschiedene Zahlen. Ist mir ein echtes Rätsel. Darum habe ich diesen Film im Format AVI, MOV und DVX gespeichert. Bei allen ist es das selbe Vernommen. Video bearbeitungs Programm ist das“MAGIX Video Deluxe Premium“ Hat jemand, der diesen Film ansieht. Eine Ahnung was der Fehler ist oder sein kann? Dann bitte bei mir Melden.

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