Original Posted By: "Richard Navratril"
Subject: Pietenpol-List: Carelson sparsEd: Those spars look exactly like Piper spars. In fact, I understandMr. Carelson was an old Piper engineer-or something. I scrapped out acouple Piper Pawnees. The ribs have 90 d sheet angles at the sparopenings with small #4 p.k. screws run threw them into the flange ofthe spar. 4 screws on each side. So, if Piper did it that way, it mustbe ok. It seems to me that the best way attach a Piet wood rib would beto widen the verticals of the rib at the spar opening so as to have somematerial to run a screw threw. Or, if you haven't built your ribs yet,Carelson has 'T' and "L" angles for making ribs. Ed, here is your chanceto be a pioneer. The first known metal wing Piet! I would look into itmy self, but I already have my ribs and spars built. Leon S.________________________________________________________________________________