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Union Pacific Dampflok (Steam locomotive) Big Boy 4004
Union Pacific Dampflok (Steam locomotive) Big Boy 4004

Union Pacific Dampflok (Steam locomotive) Big Boy 4004
Description: English below

- Detaillierter witterungsbeständiger Kessel und Tender aus Polykarbonat
- Authentische Lackierung
- Für Innen- und Außenanlagen geeignet
- Metallfahrgestell
- Metallräder und Achsen
- Wird mit funktionsfähiger Klauenkupplung geliefert. Für Kadee Kupplung vorbereitet; LGB Kupplung liegt bei.
- Beleuchtete Positionslampen und Loknummeranzeigen
- Konstante Scheinwerferbeleuchtung
- (2) Präzisionsmotore mit Schwungrad
- Lokführer und Heizer Figuren
- Flackerntes Feuerlicht
- Synchronisierter Dampfentwickler
- Funktionsfähiges Tender Rücklicht
- Proto-Sound 2.0 mit DCS (Digital Command System)
http://de.wikipedia.org/wiki/UP-Klasse_4000


English

- Detailed weather-resistant polycarbonate boiler and tender body
- Weather-resistant, Authentic Paint Scheme
- Indoor / Outdoor Use
- Die-Cast Locomotive Metal Chassis
- Metal Wheels and Axles
- Supplied with operating Knuckle coupler, hook & loop Coupler, and drilled mounting pad for Kadee coupler
- Lighted Number Boards
- Lighted Marker Lights
- Constant Voltage Locomotive Headlight
- (2) Precision Flywheel Equipped Motors
- Engineer and Fireman Figures
- Operating Firebox Glow
- Operating Ashpan Flicker
- Numerous added-on details including piping, ladders, front end throttle, builder's plates, air pumps, pilot radiators, and metal bell, whistle, and handrails
- Synchronized Puffing Proto Smoke System
- Operating Tender Back up Light
- Proto-Sound 2.0 with The Digital Command System (DCS) Featuring: Freight Yard Proto-Effects

During the late 1930s, the Union Pacific often used helpers to move trains from Ogden to Wahsatch. The UP wanted to simplify this move so they asked their "Department of Research and Mechanical Standards" (DoRMS) to design a locomotive that could pull a 3600 ton train unassisted over the 1.14% grade of the Wahsatch.

The designers determined that to pull a 3600 ton train, a tractive effort of 135,000 lbs would be needed. Assuming a factor of adhesion of 4.0, the weight on drivers would have to be 4.0 * 135,000 = 540,000 lbs. Given an axle loading of 67,500 lbs each, this would require 8 drivers or an x-8-8-x wheel arrangement. The designers agreed upon the 4-8-8-4 design. Next, the horsepower and cylinder sizes were computed based on 300 psi boiler pressure. Although they weren't planning to pull these freight trains at 80 MPH, the DoRMS designed them for 80 mph in order to have a sufficient factor of safety built into the design. What resulted is considered by many to be the most successful articulated steam locomotive ever built. 4000 was delivered to Omaha at 6pm, September 5, 1941.

The 25 Big Boys were built in two groups. The first group, called "class 1", were built starting in 1941. They were numbered 4000-4019. The second group, "class 2", were built in 1944. They were numbered 4020-4024. The last revenue freight pulled by a Big Boy was in July of 1959. Most were retired in 1961. The last one was retired in July of 1962. As late as September, 1962, there were still four operational Big Boys at Green River, WY.

The total mileage of each of the Big Boys from class 1 were roughly the same -- 1,000,000 miles. 4016 had the lowest mileage -- 1,016,124. 4006 had the highest mileage -- 1,064,625. Of the second group, 4024 had the highest mileage -- 811,956.
Manufacturer: MTH (Mike's Train Hous Catalog Number: 70-3009-1
Country of Origin: China Road Number: 4004
Year of Manufacture:   Epoch: 1941 - 1957
Railroad: Union Pacific
with Digital Decoder: Scale: 1:32
Decoder Interface: Gauge: 45mm
Sound: Weight in Grams: 10000
Smoke: Length in mm: 13462
Decoder Installation: Minimum Radius in mm: 1240
    Number of Motors: 2
Service Parts Diagram
Spare Parts List:
Sound File:
User Guide: Expert Instructions
Additional Documentation:
Date: 01/14/2010 Hits: 10936
Added by: Stefan's Gartenbahn File size: 337.7 KB

EXIF Info
Exposure time: 1/20
Aperture value: F/3.5
ISO speed: 80
Date created: 12.01.2010 11:07:15
Focal length: 11.28mm

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