A mod for my own server's autodownload purposes which basically just rebalances all the trains from all 3 mods it depends on, in a nutshell:

• (base) speed of steam locomotive = 100/kmh
• (base) speed of normal locomotive = 200/kmh

• (base) speed of nuclear locomotive = 300/kmh

• normal steam in steam locomotive = regular speed & half acceleration

• nuclear steam in steam locomotive = double speed & normal acceleration
• deuterium steam in steam locomotive = tripple speed & normal + half acceleration

(honestly no idea why i typed that out, its basically just exactly the code, so you might as well look at the screenshot ^)

this is just a personal preference, maybe its op, maybe its a nerf, its just for me to encourage the usage of different trains, have fun :)