Can anyone help me with a plan to build a loop over a loop totally elevated track. This would be running one train (Lionel O gauge track) over the other around the whole layout.
Tell me how (plans) to build the elevated part to mount the track on.
I’d agree. While the theory of building an elevated track is the same, in practice there are a lot of differences between HO, N and O gauges. The important thing is the much larger stresses imposed by the larger O stuff. The Classic Trains gang will be much more familiar with this. Also, there are manufacturers in each gauge who would have pre-made parts, but once again, different companies supply the different scales.
to save from creating a whole new thread, I actually have to do this on my layout. The track will be on the edges of the layout; the upper track visible and the lower underneith, in the tunnel. I wanted to have cut-outs in the backdrop so that I can reach in in case something derails inside the tunnel, but I’ve been stumped as to the best way to go about doing this. I was thinking of simply building a foam ‘box’ over the track, and having the top affixed to the backdrop to form the vertical support on that side. Do you think this would be strong enough?