@AlexMaria do you use Sketchup for all your Trainz content? I know the high poly-count on there usually turns most people away from it nowadays.
Yes, for the time being i do.
I'm trying to switch away from Sketchup because it has a lot of limits, but as at the moment i'm still learning to use 3DSmax/GMAX i will made another couple (maybe a few) more trains made with sketchup (one is the Tokyu 1000 Series and it's third-sector railways variants wich is in the work, and another is the Tokyu 8090/8590 Series, wich is in a "advanced studying and researching" phase).
About the poly count, i try to stay around 25000 polygons (with a maximium of about 30000 for really complex trains, such as my earlier Seibu 9000 Series), therefore (and also because Sketchup doesn't do rounded surfaces wery well) i try to focus on boxy-like commuter trains, wich usually require a lot less polygons than others.
I'd also like to make animated doors, wich is something that cannot be done in sketchup (by the way, if someone can give me a quick rundown on how to make them i'd be very grateful).
Nonetheless, even if i don't know how to make them, all my models from the JNR 301 Series onwards are designed to be easily convertible and are already predisposed to recieve animated doors.
Also, are there any other 3D modelling software compatible with trainz? I heard Blender is too, but it's hell hard to learn for someone that starts over from zero. I'm searching something with a smoother learing curve.