Very good INFORMATION . Thanks from a new KR fan. On Aug 19, 2016 8:40 AM, "Mark Langford via KRnet" <krnet at list.krnet.org> wrote:
> Folks who witnessed the attempted destruction of a stub spar at a past > Gathering will probably agree that the spars have a significant margin > of safety on the KRs. The spars were jacked up to the point of being > bent probably 14" upward from the fuselage, and neither fuselage nor > spars gave. Finally, the shear web started to split, but the spars were > still fine and ready to accept more load. Anybody who witnesses that > test had to walk away impressed with the spar strength, especially > considering that in anything like normal (but bumpy) flight, the wings > never even flex. > > And despite all the concern about the WAFs and their connection, neither > wing component is likely to fail, and in fact, never have in any kind > of normal (not crash) flight. > > Larry Flesner and I have seen wings where the spar broke on impact with > the ground at the bottom of a spin, and the spar broke a few inches from > the WAF, not at the WAF or the connections from WAF to spars. > > Marty Roberts used to fly big guys at the Gathering hard and fast, with > a gross weight of probably 1200+ pounds, and his g-meter would usually > come back with 6g's or so stuck on it. He reset it for every flight. > > Just a data point, but I personally will lose no sleep over my spars > breaking... > > Mark Langford, Harvest, AL > ML "at" N56ML.com > www.N56ML.com > > > > _______________________________________________ > Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. > To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org > please see other KRnet info at http://www.krnet.org/info.html > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options >
