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Charles Ro Preisliste 1997 (Charles Ro price list 1997)
krs
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Union Pacific Dampflok (Steam locomotive) Big Boy 4000
| Union Pacific Dampflok (Steam locomotive) Big Boy 4000 |
| Description: |
English below
Union Pacific Dampflok Big Boy von USA Trains mit Laufnummer 4000. Dies ist die größte Modellbahnlok mit einem Druckgußgehäuse die je produziert wurde. Diese Lok gibt es auch mit Laufnummern 4002, 4012 und 4014 als USA Trains Produktnummern R20041, R20042 und R20043.
- Scheinwerfer vorne
- Glocke aus Messing
- Führerstandbeleuchtung
- Rauchkammer mit Feuerschein
- DCC-Ready
- Dampferzeuger
- Synchronisierter Sound
- Gewicht: Lok: 20,8 kg - Tender: 7.4 kg
- Zugkraft (Durchschnitt): 3600 Gramm
English
Prototype:
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.
Model:
Union Pacific steam locomotive Big Boy by USA Trains with running number 4000. This is the largest die-cast modeltrain locomotive that has ever been manufactured. This locomotive is also available with running numbers 4002, 4012 und 4014 under USA Trains product IDs R20041, R20042 and R20043 respectively.
- Operating headlight
- Brass Bell
- Cab light
- Lighted firebox and ash pan glow
- DCC-Ready
- Dual operating smoke stacks
- Synchronized Sound
- Weight: Engine: 45lb 13.5oz - Tender: 16lb 3oz
- Drawbar pull force avg.: 8 lbs |
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| Manufacturer: |
USA-Trains |
Catalog Number: |
R20040 |
| Country of Origin: |
China |
Road Number: |
4000 |
| Year of Manufacture: |
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Epoch: |
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| Railroad: |
UP - Union Pacific |
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| with Digital Decoder: |
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Scale: |
1:29 |
| Decoder Interface: |
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Gauge: |
45mm |
| Sound: |
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Weight in Grams: |
28200 |
| Smoke: |
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Length in mm: |
1448 |
| Minimum Radius in mm: |
2440 |
Number of Motors: |
2 |
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| User Guide: |
download
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Sound File (wav): |
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| Service Parts Diagram: |
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Sound File (mp3): |
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| Spare Parts List: |
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Video (mp4): |
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| Expert Instructions: |
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Additional Documentation: |
download
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| Decoder Installation: |
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Additional Information: (zip): |
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| Date: |
06/17/2010 |
Hits: |
58773 |
| Added by: |
krs |
File size: |
1.4 MB |
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| Copyright: |
The member krs
confirms that he/she hold the rights to this picture
or is authorized to publish this picture.
The operator of the GartenBahn DataBase assumes no responsibility
for this picture and does not claim any ownership.
If you wish to exercise any legal claims, please contact the member directly krs. |
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