Reply to "Max Grade?"

My old layout had a 6% incline which started on an O45 curve and went from 0" to 6.5".   My Imperial Mountain, 0-6-0 switcher and starter set 2-8-0 had no problem going up it.   The most cars I pulled was 12 due to being limited by the reverse loop on my elevated level.  The Imperial Mountain probably could have pulled 20 cars up it.  It had no problem with 12 even at 10 scale mph.

I was using Atlas track.

A piece of advice on what I did.  Set up a temporary incline on the floor )if you don't have a platform) and run an engine or two up and down pulling 10 or so cars.  It will give you a good idea of what you can and can't do.

- Greg