Thank you, LT1Poncho, Jeff, Mike!
I continued checking engines pulling on the grades and clearances. The grades are fine. I have no issues with height. I won’t be buying modern hi cube cars or double stacks, so no issues there. You may recall I moved a support because of clearance issues. No doubt it is tight with the supports between tracks, but I don’t have any trouble with cab roofs . The closest anything comes to the supports are the railings at either end of the SD9, and they don’t hit going either direction. I was thinking my 3 sets of passenger cars are all 15”. I pulled out the set of Lionel NYC Pullmans, only to realize they are 18”. 🙄 I just finished checking them being pulled by the SD9 and a Consolation. Whew! There is plenty of room! I do have a NYC Hudson, but it is away right now for some work. I am going to “””assume ””” it won’t require any more room than the Consolidation. Famous last words!! 😄 I will take a video and post it before I put the 18” cars away again.