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KLINE K3790-4009W Union Pacific Big Boy #4009 w/Smoke & Whistle
KLINE K3790-4009W   Union Pacific Big Boy #4009 w/Smoke & Whistle
KLINE K3790-4009W Union Pacific Big Boy #4009 w/Smoke & Whistle
Item#: K3790-4009W

Product Description
KLINE K3790-4009W Union Pacific Big Boy #4009 w/Smoke & Whistle

Always wanted to run a Big Boy on your pike, but don’t have the space for the large diameter curves? K-LINE has the answer with this Big Boy that runs on all O-31 Curves that is the initial offering in the K-LINE Titans series.

This Korean-produced engine will blow you away with the detail and the craftsmanship and wait until you hear the price: $399 for the conventional version and $125 more for the command version.

During World War II Union Pacific operated some of the most modern and powerful steam locomotives ever built. Among them were the famous Big Boys, the largest steam locomotives in the world, which were unique to Union Pacific. Although Union Pacific was among the first of the U.S. railroads to introduce diesel-powered streamlined passenger trains in the 1930s, the capabilities of these powerful steam locomotives made them the mainstay of UP freight operations throughout the war.

Twenty-five Big Boys were built exclusively for Union Pacific, 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 articulated, or hinged, to allow them to negotiate curves. The massive engines normally operated between Ogden, Utah and Cheyenne, Wyoming. The sharpest curve the Big Boys could negotiate was a 20 degree curve.

During the late 1930s, the Union Pacific often used helpers to move trains from Ogden to Wasatch. The UP wanted to simplify this move so they asked their 'Department of Research and Mechanical Standards' to design a locomotive that could pull a 3600 ton train unassisted over the 1.14% grade of the Wasatch. What resulted is considered by many to be the most successful articulated steam locomotive ever built.

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.