UP DD40X

UP DD40X

GM-EMD DD40X

When diesel traction took over from steam, Union Pacific required lash-ups of several units to equal
the power of a single 4-8-8-4 type steam locomotive; and it's management made consistent efforts to find a more simple solution by increasing the power of single units.

UP experimented succesfully with gas-turbine power for some years, but as diesel engine technology developed, it concluded that there were distinct advantages to buying standard equipment from locomotive suppliers.

In the late 1960's UP decided to celebrate a centenary of continuous operation by ordering the largest and most powerful single unit locomotives in the world. Constructed almost entirely from standard General Motors parts, the DD40X or 'Centennial' combined 2 x 16 cylinder prime movers on one chassis.

As modern powered railroad operations evolved in the US, standard practise on most sytems became to calculate the required horsepower per ton to move a train over a given route, and issue a suitable number of conveniently rated units to form the motive power. Large, indivisible units such as the behemoth DD40X were less than suitable for these practises, and were eventually made redundant by less striking examples of locomotive technology.

Model: DD40X
Horsepower: 6600
Engine: 2 645E3 (16cyl 2-stroke)
Max.Speed: 90 mph
Built: 1969-1971

UP DD40X
• config.txt 20.57KB
dd40ax_up_alpha_numbers
alphanumber_0a.tga 4.04KB
alphanumber_0b.tga 1.04KB
alphanumber_1a.tga 4.04KB
alphanumber_1b.tga 1.04KB
alphanumber_2a.tga 4.04KB
alphanumber_2b.tga 1.04KB
alphanumber_3a.tga 4.04KB
alphanumber_3b.tga 1.04KB
alphanumber_4a.tga 4.04KB
alphanumber_4b.tga 1.04KB
alphanumber_5a.tga 4.04KB
alphanumber_5b.tga 1.04KB
alphanumber_6a.tga 4.04KB
alphanumber_6b.tga 1.04KB
alphanumber_7a.tga 4.04KB
alphanumber_7b.tga 1.04KB
alphanumber_8a.tga 4.04KB
alphanumber_8b.tga 1.04KB
alphanumber_9a.tga 4.04KB
alphanumber_9b.tga 1.04KB
dd40ax_up_art
dd40ax_up_art_512.texture.txt 110 bytes
dd40ax_up_art_512.tga 1.00MB
dd40ax_up_art_icon.texture.txt 112 bytes
dd40ax_up_art_icon.tga 32.02KB
dd40ax_up_body
cab.texture.txt 26 bytes
cab.tga 12.02KB
cupla.texture.txt 28 bytes
cupla.tga 768.04KB
dd40_up1.texture.txt 31 bytes
dd40_up1.tga 768.04KB
dd40_up1bump.texture.txt 60 bytes
dd40_up1bump.tga 3.00MB
dd40_up2.texture.txt 31 bytes
dd40_up2.tga 384.04KB
dd40_up2bump.texture.txt 60 bytes
dd40_up2bump.tga 384.04KB
dd40ax_up_body.im 593.80KB
digit_1a.texture.txt 31 bytes
digit_1a.tga 812 bytes
digit_1b.texture.txt 31 bytes
digit_1b.tga 812 bytes
digit_2a.texture.txt 31 bytes
digit_2a.tga 812 bytes
digit_2b.texture.txt 31 bytes
digit_2b.tga 812 bytes
digit_3a.texture.txt 31 bytes
digit_3a.tga 812 bytes
digit_3b.texture.txt 31 bytes
digit_3b.tga 812 bytes
digit_4a.texture.txt 31 bytes
digit_4a.tga 812 bytes
digit_4b.texture.txt 31 bytes
digit_4b.tga 812 bytes
digit_5a.texture.txt 31 bytes
digit_5a.tga 812 bytes
digit_5b.texture.txt 31 bytes
digit_5b.tga 812 bytes
digit_6a.texture.txt 31 bytes
digit_6a.tga 3.04KB
digit_6b.texture.txt 31 bytes
digit_6b.tga 812 bytes
env_glass.bmp 12.05KB
env_glass.texture.txt 32 bytes
env_metal.bmp 12.05KB
env_metal.texture.txt 32 bytes
fan-fan.texture.txt 67 bytes
fan-fan.tga 4.00MB
fan_lod0.im 4.57KB
fan_lod0.kin 2.31KB
fen-fen.texture.txt 41 bytes
fen.tga 256.04KB
platform.texture.txt 31 bytes
platform.tga 12.04KB
spinninglight.im 3.40KB
spinninglight.kin 2.34KB
dd40ax_up_shadow
black.texture.txt 28 bytes
black.tga 786 bytes
dd40ax_up_shadow.im 77.82KB