Atlas 072 frog issue

i would first check to see that your wheels are in gauge.

I have that same issue with my Legacy 0-8-0.

I usually help guide the little steamer by hand. My MTH GP38-2, which is a similar size to your Atlas glides through no problem.

All my other engines run through no problem.

I am having the same issue with my 4-6-0 Lionel 10 wheeler. It picks and bounces at the first set of drivers. For this reason I am going to stick to # 5 switches, nothing smaller.

We found a solution last night.  We built up the guard rail with two thicknesses of plastic electrical tape.  This narrowed the opening and kept the flange hard into the turn which caused solved the issue with the opposite wheel running up on the frog.  We fixed three switches and it has solved the issue for 4 engines that were jumping up and derailing.  I guess the electrical tape can be replaced with a .020" piece of styrene or something similar.

dick

Do you know what the roller spacing is on the Lionel 10 wheeler? I know some of my Railking steam engines won't cross a #5 turnout without losing power. I think these engines are 2.5" between the rollers. What's the minimum the roller spacing can be before you have problems on the #5's.

Thanks

sometimes the pick up rollers do not have enough chamfer on them and when they drop down where the center rail ends before it crosses the outside rail the pick up roller gets caught and lifts the engine.

Actually I will have to check, but the engine that I have the smallest roller space is the Atlantic 4-4-2 made by Lionel... and it does ok on a no. 5. however a curved Ross switch or an Atlas 22.5 crossing... its a no go..

Thanks! I'd appreciate it.