Brodhead Pietenpol Association

Original Posted By: ToySat(at)aol.com
Subject: end ribs Thinking back on the rib building, I look back on things that seemedconfusing, but once you get through them it clears up.....He calls outan end rib for the last rib on both ends of the one piece wing. Thisrib has extra "sticks' in it to support the rib caps, and is to stop thefabric from distorting the rib when the fabric is tightened ,pullingdown over the edge. In building the 3 piece wing, I put an end rib on each end of eachwing, plus on each end of the center section. Then the inboard rib oneach wing and the outsides of the center section get 1/16x2" ply to stoplateral distortion. Is this what everyone else did? walt ________________________________________________________________________________

Original Posted By: walter evans
Thinking back on the rib building, I look back on things that seemedconfusing, but once you get through them it clears up.....He calls outan end rib for the last rib on both ends of the one piece wing. Thisrib has extra "sticks' in it to support the rib caps, and is to stop thefabric from distorting the rib when the fabric is tightened ,pullingdown over the edge.In building the 3 piece wing, I put an end rib on each end of each wing,plus on each end of the center section. Then the inboard rib on eachwing and the outsides of the center section get 1/16x2" ply to stoplateral distortion.Is this what everyone else did?waltThinking back on the rib building, Ilook backon things that seemed confusing, but once you get through them it clearsup.....He calls out an end rib for the last rib on both ends of the onepiecewing. This rib has extra sticks' in it to support the ribcaps, andis to stop the fabric from distorting the rib when the fabric istightened,pulling down over the edge.In building the 3 piece wing, I putan end ribon each end of each wing, plus on each end of the center section.Then theinboard rib on each wing and the outsides of the center section get1/16x2ply to stop lateral distortion.Is this what everyone elsedid?________________________________________________________________________________

Original Posted By: walter evans
Walter; This is exactly what I did on my Scout (1 piece) wing....PLUS....thoseend ribs with the extra vertical sticks.....at the tip...... need extralateral protection as well. I did that with several (3 top, 3 bottom)1/4 x 1/4 "sticks" glued under the capstrips and PARALLEL to the spars &accrossed 3 ribs (2 rib bays). I am glad I did that as even with that,the tip end rib has a slight bow or wavyness to it and transmitted that to the two other ribs to a lessor degree.....also it was needed onthe first full rib of the aileron cutout be it the sticks or the 2"piece of plywood.......you can't believe what pressure the fabric caninduce SIDEWAYS at these areas!Earl Myers -----Original Message-----