Hello, I would like to first thank all that replied on the train derailment issue with the 671-681-682…What happen is I tried to recreate the wheel buy rebuilding my layout. I should have known lightning would never strike twice. The layout I had everything ran the rails and switches fine 1920-2000 more than 100 trains.(4 at once of course,sweet).Long story short the new lionel 072 switches #5166-5165 will not pass a 671-681-682. I did check the gauge and the trucks on all 5 I tested. The gauge is correct. They all derail every time. I hope someone with the same problem can confirm this. The trains run fine on the switches I bought in 2000. The new switches have the large Lionel logo on the silver plate. It appears the swivel rail has just a bit more taper in it. This cause the wheels to wedge between the outside rail and swivel rail before the transfer is complete. I hope this info will help others. The problem for me is over the trains will have to stay on my inside loop with old switches. I hope the 2340 will pass through the switches.(That would push me over the edge if it didn’t) not really. Thanks for all your help and input Steve Prysok.
Steve,
Good info.
Glad you figured it out.