Showing items 41 - 43 of 43

UP 4-6-6-4 Challenger N XL L M4

Equipped with ESU "FULL THROTTLE STEAM" features!

The name Challenger was given to steam locomotives with a 4-6-6-4 wheel arrangement. This means that they have four wheels in the leading "pilot" truck, which helps guide the locomotive into curves; two sets of six "driving" wheels, and finally, four "trailing" wheels, which support the rear of the engine and its massive firebox. Each set of driving wheels has its own steam cylinder. In essence, the result is two engines under one boiler.

The more…

UP 4-8-4 FEF N XL L M4

Equipped with ESU "FULL THROTTLE STEAM" features!

Recorded from UP FEF 4-8-4 Northern #844
Built in 1944 Steam Locomotive No. 844 is the last steam locomotive built for Union Pacific Railroad. Made for passenger service it also hauled some freight in the late 1950s. Still serving today it has become Union Pacific's "Living Legend" as it holds the world record for longest contiuosly running steam locomotive!

With 80 inch Drivers, 300lbs of boiler pressure, and designed to safely operate at 120 more…

UP 4-8-8-4 Big Boy N XL L M4

Equipped with ESU "FULL THROTTLE STEAM" features!

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" (DoRMS) to design a locomotive that could pull a 3600 ton train unassisted over the 1.14% grade of the Wasatch.
The designers determined that to pull a 3600 ton train, a tractive effort of 135,000 lbs would be needed. Assuming a factor of more…