Nice. Have you thought of doing a build thread?Here is a design belonging to one of our club members using a piece just like that. The gray tubes just slip in loosely, they aren't fastened in. He runs a bungee cord around all 3 sides to keep the legs from splaying out, connected to the eye-bolts. The aluminum fixture on top was custom made, I don't know who made it. It can adjust for angle and there is a second screw that allows it to be tightened on any size launch rod.
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