OK, this isn't the greatest picture, but check out http://www.n56ml.com/900hour/100717140m.jpg . It shows a thin aluminum angle used to position a 3/8" nutplate for each WAF bolt, and one continuous WAF bolt for what was a place for two (in single shear). Astute viewers will notice there's too much thread on the bolt (you don't want to put threads in shear, and you don't want them in contact with the WAF either, if possible), so some longer ones were ordered and installed, excess threads removed, and it worked out nicely.
What's missing in the photo is the aluminum spacers between each WAF. I think it was just too hoaky looking and hideous to make a photograph of, because I simply JB Welded them in place! Done "properly", they'd be supported by their own little aluminum angles like the nut plates were, but given that OSH was about three days away when I took this picture, some things just didn't happen. "Friction" isn't really a factor in WAFs. It's almost pure shear. Friction is just icing on the cake to take the slack out of the connection, so the wings won't have any up and down play at the tip, and that's one of the things the spacers do for you when you tighten down the bolts. You could simply put a pin in the hole and go flying, but tightening them down is better... Mark Langford N56ML "at" hiwaay.net website at http://www.N56ML.com --------------------------------------------------------
