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Hi Brian, I think I have the plans for the engine shown in your 1st post. Somewhere along the line I downloaded them. (Free) I created a 3D model of it in Pro-Engineer years ago as an "excercise". I'll see if I can find them for you. I think the plans were in German though. But, the details & dimensions are there... John
Easiest way to fabricate the trunk and standard would be to turn the flange and guild as one piece, legs cut from 1/8" tee and bent to form the vertical ribs, solder all these onto a flat bar and then cut that to form the feet after soldering.