Thanks again for the positive feedback. The track system is very basic, its just 4 100mm castors with the rubber wheel removed bolted to the shelter. The hub for the castors has a v shape and runs on some downee gate track. The weight of the structure holds it down on the rails and in the closed position it is locked with a couple hasp and staples. The true test of the relocatability will come in the next few weeks. Just get it all set up and we have to move haha.
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