Good idea ! That's exactly what I did on my standard KR2S , Mark. I ordered the spar material long enough to go right to the end (91" front/92" rear) and omitted the "kluggee" foam extentions. Also dumped the 33" wing rib for a continuous line to the end rib ( 29 "), when sanding the foam .
It's the best way to build a strong wing . Cheers Chris Gardiner KR2S ----- Original Message ----- From: "Mark Langford" <n5...@hiwaay.net> To: "KRnet" <kr...@mylist.net> Sent: Friday, November 28, 2003 11:28 PM Subject: KR>hoaky foam spar > It's been a few years since I brought this up, but the hoaky foam spar > extensions that are added to the KR2 spars to make them KR2S spars just > doesn't sit right with me. I feel sure that was the result of somebody > trying to use spar material (and wood kits) that were already called out for > the KR2, rather than structural or common sense integrity. Not that they're > not structurally sound (there's not much load out there, but there are > plenty of opportunities to screw it up), but just as a matter of keeping > things straight. It's hard to beat a nice spar for straightness. It'd be a > shame to stick some junk on the end of it and give a joggle or a > discontinuity. > > If I were building a new KR2S I'd just buy the spar material 12" longer than > the plans call for dump the 33" template, going with the next one in line, > the 30.67" template at the new end of the spar, and dispense with the > foam/glass kludge job. In fact, the AS504X templates already have a phantom > spar and dimensions for the spar if it's extended to that point... > > Mark Langford, Huntsville, AL > N56ML "at" hiwaay.net > see KR2S project at http://home.hiwaay.net/~langford > > > > _______________________________________________ > see KRnet list details at http://www.krnet.org/instructions.html
