engmod said:
You need to set this back to 100 if you want realism.
I have corrected, but at ver. X1.3.1-201 problem still persists(at X1.3.1-133 OK)
It's doubtful for me, that single locomotive can accelerate so fast to 89km/h at first notch...
Who develops physyc of wheel-to-rain interaction, I offer this approach: