Reply to "Acceptable grade percentages"

I use fastrack 048 and 060 curves on my 6% grades.

All but one of my MTH diesels are single motor engines. They all have traction tires and handle the grades well. I generally run between 15 and 20 smph on the grades.

Just a note, any underweight cars will tend to pull off the track (derail) at the curves if you have the train on two curves at the same time going up the grade. A great way to identify problem cars without weighing them.