Facebook Page
Big Boy 4012 Detail Photos 1

BigBoy #4012 Detail Photos
Page 1

BigBoy 4012

Presently, BigBoy #4012 resides at the SteamTown National Historical Site in Scranton PA. The following is an archive geared specifically at those special few involved in the construction of a scale model of the Union Pacific Bigboy. These photos represent a small grouping of my total collection of detailed BigBoy photos usable in the construction of a scale model. If you are interested in more photos of higher quality prints of those in this section of the BigBoy Information Center, please feel free to Email me at

click any of the small pictures to view the large picture

Front shot of BigBoy #4012

Left side of front pilot truck

Right side of lead driving truck. Note the flexible steam pipe.

Left side of front driving truck.

Left side of rear piston.

Alco Power Reverse Gear and linkages.

Detailed shot of the Alco Power Reverse Gear.

Right side of cab and trailing truck.

Left detailed shot of cab side.

Right side of trailing truck.


Back to the BigBoy Main Page

Back to the JLS Railroad HomePage