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I have run into a track planning issue that I thought I would ask the experts A quick track planning issue, I am primarily planning on running passenger EMUs, but I have run into a potential problem on my track plan. My track is basically against the back of the layout (1ft. shelf) but I want to run it back to the shelf so that I can ultimately complete a loop. The dimensions I have suggest that I might be able to run a ? shape, but only if I make extensive use of the 216mm (8 1/2") 45 degree unitrack pieces (and cheat a little bit). I have to make the ? shape in a 1' by 2' area so using any larger size track won't work (nor can it have easement curves). I am ok with the use of 8 1/2" unitrack (and I have some pieces available from prior projects). I know it is going to look horrid, and I will likely hide most some of the track work in easy to access tunnels, but really would like opinions as to whether this is such a bad idea that I should be making significant modifications to my track plan. Has anyone tried running EMUs on this tight of curve? I will likely pull out the trailer cars from my set later and see if they will navigate the curves and pass on that spacing. Thanks, Mark