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  • I'm no train head, but I suspect the best solution is a piece of plywood big enough to accommodate your layout. Commented Nov 2, 2014 at 5:20
  • So, is the problem that the train is coming off the track, or the track is coming apart? I'm not sure what you mean by "...the whole things falls down." Also, what happens if you don't have the flex track? Commented Nov 3, 2014 at 1:17
  • :) Yes, I'm sure if I were to build on a table or wooden floor or some other more structurally sound surface it'd work better. But I lack the space for such a surface, so I was hoping for a bricks-only solution. Commented Nov 3, 2014 at 14:58
  • 1
    @Nick2253 What happens is that the front wheels of the locomotive derail, and on that locomotive they are constructed in such a way that the entire wheel truck can turn and sway significantly. Once the wheels are off, it's a matter of seconds before the locomotive falls over. The track stays together, primarily because it has so many flex pieces here and there to provide some tolerance to the flexing that occurs. The thing is, most of the time the flex track works just fine, even long stretches of flex track aren't an issue. Commented Nov 3, 2014 at 15:01
  • I'm wondering if the flex track is causing more problems than it fixes. If you allow the track to move with any vibration from the train, sure, the track may not come apart, but that means that the track is also no longer dampening the vibrations from the train, which could be allowing the train to jump the track. Non-sequitur: maybe you need to add some more weight above the front axle. Try something like: bricklink.com/catalogItem.asp?P=73090b Commented Nov 3, 2014 at 15:26