Moonman posted:4.3% The train declines a little fast when it's set at a constant speed to make the climb to just run the line unattended, but it doesn't derail. (Berk Jr. Polar set)
Is that generally the reason people tend to object to grades higher than 2-3%? I've read a lot here and I still don't know just what a real-life acceptable grade would be for my 2012 and later MTH RailKing engines.