The Murphy Builders Site

Never one to take the simple route I elected to use plexi in the side windows. One reason is that gasoline on lexan immediately and permanently damages it. The plexi has a considerable expansion coefficient and won't take stressing (rivet compression) well. Wanting to add as much work and complication as possible I found a steel miniature washer that would just go over the selected pulled rivet. (Don't remember if I used 1/8 or 3/32 rivet). The washers had a very small outside diameter, just about the size of the rivet head. A clearance hole for the washer OD was drilled in the plexi and 3 washers were stacked on each rivet so the plexi would float (barely) on the rivet column. The rivet then pulls down only on the gap seal and washers and not on the plexi. A good project to do in the winter with plenty of Irish coffee at hand.
Ralph Baker



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