I recently posted about the 3rd Rail K2a I recently purchased and my struggle with finding the battery. I've pulled the battery out now, successfully ran a conventional test on a short piece of straight track, and also successfully addressed the engine to my Cab-2. I've run into a new problem however:
When entering a curve (turning right), the engine abruptly stops. Lights and sounds are still on with no interruption, engine simply halts in its tracks. This sometimes happens on straights but not consistently. What I have discovered is that if I angle the train so that the locomotive nose is pointed slightly to the left relative to the track, it will move (there is some slop between the wheels and rails such that the engine can sit at a slight diagonal and still fit comfortably on the track). However, the moment it enters a turn or this angling is lost, movement is instantly killed. If I re-angle the train while it is still powered and "running", it will immediately begin to move again (at least on straights).
With this in mind, what might be the problem part? Is it the wire plug/connector between the tender and the engine?