Let me try that again...this time as plain text rather than "rich text"...
John Bouyea wrote: >>Don Reid wrote back in 2007 that the WAF bolts function better as a single bolt in double shear top & bottom (2 total) than 2 on each fitting, forward and aft, top & bottom (4 total).<< I think most folks realized that a single bolt would be better than one, but the implementation is slightly challenging. I originally just went with two single shear bolts...because it was clearly working fine for the hundreds of KRs built before mine, and still had a lot of airplane left to build at the time! But later, my incentive was to make the wings easier to get off and on after I closed up the gaps between the inner and outer stub wings. So while I had the wings off to build another wing tank, I went single shear as well. As you can see by the nut plates holding the bolts in place, this arrangement isn't far from a "pinned joint". It's shown at http://www.n56ml.com/900hour/, as well as how to build a vinyl ester fuel tank in a matter of hours, and "after-the-fact" Hoerner wing tips. Don Reid also did an article in the August 1995 KR Newsletter regarding the specific WAF design...the value of the "lightning" holes in load sharing. The Newsletters are posted at http://www.krnet.org/newsletter/ . I'll try to identify exactly which batch that one is in and post it tonight. Mark Langford, Harvest, AL ML "at" N56ML.com www.N56ML.com
