My experience has been that only those with traction tires will handle any grade.
+1 All the Marx engines I have seen for use with trestle sets had traction tires. In addition, they often have double reduction one way motors. I am sure there are a lot of exceptions, of course. Few hard and fast rules when it comes to Marx.
Lay down a strip of friction tape ( not the plastic stuff) on one of the outside rails and the engine will climb the grade.
Thanks for that tip! I will be picking up a roll of friction tape at Wal-Mart tomorrow. I had considered doing something like "Bull Frog Snot" on one outside rail or that "Plasti-Dip" handle dipping vinyl stuff, but this is cheaper. I like grades for my odd-ball projects. Want to see how an O27 handcar or the K-Line Porter will climb on the friction tape!
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