UP Big Boy

UP Big Boy

The Union Pacific Class 4000 4-8-8-4, nicknamed 'Big Boy' is considered the largest successful steam locomotive ever built. With a tractive effort of 600 kN, the Big Boy was the only engine that alone pulled the heavy freights over Sherman Hill in Utah, USA. The Big Boy was built by Alco Locomotive, and the first series of 20 began service in 1941. 5 more joined in 1944. These 25 huge steamers remained active until 1962 and travelled over one million miles each!

The Big Boy weighed in at 345 tons and put a load of 245 tons on the 68 inch drivers. Although primarily built for pulling heavy loads, the Big Boy could handle speeds of up to 80 mph. However, most power was found in the 30 mph region. One engine was tested to an impressive 6290 horsepower.

The #4006 Big Boy now sits at the Museum of Transportation in St.Louis, Missouri.

UP Big Boy
• bigboy-cyl-steam.tfx 420 bytes
• bigboy-smoke-idle.tfx 428 bytes
• bigboy-smoke.tfx 484 bytes
• bigboy-steam-relief.tfx 452 bytes
• config.txt 17.55KB
up_bigboy_art
up_bigboy_art_512.texture.txt 83 bytes
up_bigboy_art_512.tga 1.00MB
up_bigboy_art_icon.texture.txt 85 bytes
up_bigboy_art_icon.tga 32.04KB
up_bigboy_body
bb_alpha-bb_alpha.texture.txt 51 bytes
bb_alpha.bmp 5.05KB
bb_alpha.texture.txt 31 bytes
bb_alpha.tga 12.04KB
bb_bolts.texture.txt 31 bytes
bb_bolts.tga 192.04KB
bb_bolts_bump.texture.txt 36 bytes
bb_bolts_bump.tga 192.04KB
bb_bolts_low.texture.txt 35 bytes
bb_bolts_low.tga 12.04KB
bb_bolts_med.texture.txt 35 bytes
bb_bolts_med.tga 48.04KB
bb_main.texture.txt 30 bytes
bb_main.tga 1.50MB
bb_main01.texture.txt 32 bytes
bb_main01.tga 1.50MB
bb_main_bump.texture.txt 35 bytes
bb_main_bump.tga 1.50MB
bb_main_low.texture.txt 34 bytes
bb_main_low.tga 96.04KB
bb_main_med.texture.txt 34 bytes
bb_main_med.tga 384.04KB
env_glass.bmp 12.05KB
env_glass.texture.txt 32 bytes
env_metal.bmp 12.05KB
env_metal.texture.txt 32 bytes
generic.texture.txt 30 bytes
generic.tga 192.04KB
generic_low.texture.txt 34 bytes
generic_low.tga 12.04KB
generic_med.texture.txt 34 bytes
generic_med.tga 48.04KB
up_bigboy_body.im 658.42KB
up_bigboy_body.lm.txt 338 bytes
up_bigboy_body_low.im 161.65KB
up_bigboy_body_med.im 394.62KB
window+interior.texture.txt 38 bytes
window+interior.tga 12.04KB
up_bigboy_shadow
black.texture.txt 28 bytes
black.tga 812 bytes
up_bigboy_shadow.im 37.71KB