Hi Mark
A long time ago before "experimental" came along (like in the 1980s), the Australian authorities did mandate a change to the bolt arrangement that specified a spacer tube between each pair of WAFs and a longer single through bolt instead of two short independent bolts. I think this reflects a better engineering solution with respect to shear forces but having said that there were no instances of any failures at the time and I know of none since under the original RR arrangement. The Aussie authorities mandated a number of things back then that are now superceded by experience or supply (like glues and Dynon cloth) but several remain valid, eg., flight in the rear 2" of CoG envelope. John Martindale 29 Jane Circuit Toormina NSW 2452 AUSTRALIA ph: 61 2 6658 4767 mobile: 0403 432179 email: john_martind...@bigpond.com -----Original Message----- From: krnet-boun...@mylist.net [mailto:krnet-boun...@mylist.net] On Behalf Of Mark Langford Sent: Friday, 1 October 2010 3:54 AM To: KRnet Subject: Re: KR> KR2 ARTICLE-KITPLANES NOV 2010 I met Bob Grimstead while in Perth. He's a nice guy, likes to write "flight test" articles for Aussie and US magazines, but apparently he's not qualified to speak to the integrity of the KR wing attach system. The Aussies have dictated a couple of changes to KRs built and flown there, but "improving" the WAFs isn't one of them, as far as I know. ......snip.....
