Here you can find a lot of small and big details (around 220 items) of diesel machines and ten already gathered machines which show you how you can use this details.
Triangle counts (for each group of details):
Basic meshes 1 - 3570
Basic meshes 2 - 4130
Gears - 14980
Lamps and dials - 2450
Mid details - 12540
Small details 13200
Tubes - 7360
Wheels - 8880
Example machine 1 - 10330
Example machine 2 - 7570
Example machine 3 - 4070
Example machine 4 - 8950
Example machine 5 - 5560
Example machine 6 - 4330
Example machine 7 - 5740
Example machine 8 - 6100
Example machine 9 - 9810
Example machine 10 - 7500