I also elected to extend the wing spars with full length spruce caps when I built my KR2S.
My reasons were that I didn?t like the foam extensions as they appeared too weak. As it turned out I?m glad I did. I went to the 2003 KR Gathering in Red Oak , Iowa and returning home I landed in Michigan with full wing tanks ( 5 gallons per side) due to weather . Just before touchdown, in the float, it dropped a wing tip and I scraped the runway hard enough to almost ground loop before I caught it . If it had been the foam extensions I probably would have broken the wing tip and been unflyable to continue on home. As it was , I only had a minor scrape on the r/h wingtip and a small crack to repair. Flew it home the next day, after a change of underwear and I calmed down ! Go with spruce caps all the way out if starting from scratch is my recommendation. Chris GARDINER KR2S 230 + hours Sent from Windows Mail From: brian.kraut at eamanufacturing.com Sent: ?Friday?, ?April? ?18?, ?2014 ?2?:?01? ?PM To: KRnet The main reason I did it on my last KR is that I wanted to be able to experiment in the future with different types of wing tips, extension, or maybe winglets in the future so I wanted something strong to attach them. Others might have different reasons. -------- Original Message -------- Subject: Re: KR> SPARS and extended wing span From: Paul Visk <ppaulvsk at aol.com> List-Post: krnet@list.krnet.org Date: Thu, April 17, 2014 10:34 am To: Gary Robison <djgarylynn at verizon.net>, krnet at list.krnet.org I'm just curious. Why not go with the foam spar extensions instead of extending the spars with wood. The foam is lighter and being on the wing tips the form has proven to be strong enough. Paul Visk Belleville, Il 618-406-4705 Sent from my Samsung Galaxy S?4 <div>-------- Original message --------</div><div>From: Gary Robison <djgarylynn at verizon.net> </div><div>Date:04/16/2014 3:12 PM (GMT-06:00) </div><div>To: krnet at list.krnet.org </div><div>Subject: KR> SPARS and extended wing span </div><div> </div>Larry here is a picture of my spar caps and the 2 foot pieces scarfied on. > _______________________________________________ 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 _______________________________________________ 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 _______________________________________________ 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
