Brian, I did the exact calculations and the only response to my post of "error in the plans" was. "oh really?" Hope you find the answer. Im waiting.
Steven Phillabaum Auburn Alamaba > > From: "Brian Kraut" <brian.kr...@engalt.com> > Date: 2004/06/18 Fri AM 01:59:00 GMT > To: "KRnet" <kr...@mylist.net> > Subject: KR> forward spar dimensions > > When I laminated my spar caps I used wood a little oversize so I could plane > it to the exact dimensions when they were done. Being someone who learned > to measure in a machine shop and make parts to tollerances of a few ten > thousandths of an inch, I was measuring everything with a set of dial > calipers. While double and triple checking everything I realized that there > is something weird in the dimensions in the plans. > > The 2S plans call for the center section front spars to be 2 5/32" wide > which is about 2.1563". The outboard spars are supposed to be 1 15/16" at > the root which is 2.9375". They each get skinned on both sides with 3/32" > plywood. That makes the center spar about 2.344" which is also the distance > betwen the faces of the attach fittings. The attach fittings on the outer > spars go inside the inner fittings so we add the two 1/8" fittings to the > inner spar to give us 2.375" which is about 30 thousandths wider than the > space they go into. Obviously, the fittings will flex a little and you can > make them fit, but why in the world would they not just make the center > section spars 1/32" wider so the fittings will slide right in? > > Brian Kraut > Engineering Alternatives, Inc. > www.engalt.com > > > _______________________________________ > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html >
