I recently acquired a used Legacy Susquehanna S-2 Diesel with Bluetooth Item 2033110, out if warranty.
The engine alone without any train cars runs fine through 031 curves.
The engine also runs fine pulling passenger cars through 031 curves.
However, the front truck of a freight car immediately behind the locomotive usually derails running through 031 curves and 022 switches. This happens with most, but not all, of my freight cars.
The derailment happens with Postwar freight cars with standard wheels as well as modern freight cars with fast angled wheels.
Initially, I thought the problem was because of improper wiring of the rear electrocoupler. That is because the 2 wires attached to the rear electrocoupler come out of 1 small hole near the electrocoupler, instead of normal wiring, in which each wire goes through a small hole on each side of the electrocoupler, which is how the front electrocoupler is wired.
However, when I attached a freight car to the front electrocoupler and ran the train in reverse, the train car truck nearest to the engine still derailed running through my 031 curves and 022 switches.
I have a Lionel TMCC Lehigh Valley S-2 Item 6-28532 that looks identical to the Legacy Susquahanba except for the livery, and any kind of car coupled to the Lehigh Valley never derails running through 031 curves and 022 switches. Both electrocouplers on the Lehigh Valley appear to be properly wired with one wire going through the little hole on each side of the electrocoupler.
Any thoughts regarding this weird problem and how to fix it?
Arnold
