I also think ACF-50 is better than zinc chromate because it weeps between skin laps and would also help if there is steel against aluminum. Just make...
I think most if not all of the exterior skin reinforcements are flat and nothing special such as the late model style piece ahead of the landing gear...
I still vividly remember Chuck Wentworth's words when I traded a 108 hp Lycoming for a 150(hangar collapsed on a Tri Pacer) for my PA 12 back when he...