Wayne, I didn't use the right term - "reinforcing" to be replaced by "fixing" issues with one or two misaligned or too large WAF bolt holes. A fellow builder wanted to put a heavier engine on his plane, so he "reinforced" the area around the firewall bulkhead engine mount holes using this method.
Ken Rand WAF's, as designed, and if installed properly, are strong enough for KR-2S, even with moderate span and GW increase. Sorry for the confusion, Stefan > To: krnet at list.krnet.org > Date: Mon, 8 Feb 2016 22:37:43 -0500 > Subject: Re: KR> Fiberglass layers under WAF's > From: krnet at list.krnet.org > CC: wdelislesr at carolina.rr.com > > Stefan, > > I don't see the point of this. The WAF/spar joint is fine the way Ken > designed it. > > Wayne DeLisle Sr. > > > KR> Fiberglass layers under WAF's > > > > S s_sbal at hotmail.com > > Mon Feb 8 16:03:16 EST 2016 > > > > > I found an interesting publications regarding easy reinforcement of wood > > boards used in bolted joints: > > http://www.fpl.fs.fed.us/documnts/fplrp/fplrp562.pdf > > http://timber.ce.wsu.edu/Resources/papers/P12.pdf > > This > > method seems really easy to apply in the KR WAF's bolted joints - just > > add 2 layers of 6 oz/yd? of BID fiberglass cloth on the spars beneath > > the WAF's and you get much higher bearing strength of the bolted joints, > > for a very slight increase of the weight... It shall also help to fix > > issues with unsatisfactory drilling of one or two WAF bolt holes in the > > spar flanges. > > > > Stefan > > Ottawa, ON, Canada > > s_sbal 'at' hotmail.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
