Serge. This sounds like a reasonable idea to me. You might wish to inspect with the boroscope along the way... it would be bad to find that you were off, and started to veer into the spar towards the end (remote chance I assume). But who knows what the spar taper looks like, each builder may do it slightly differently. On Tue, 24 Feb 2004 14:08:38 +0100, Serge F. Vidal <serge.vi...@ate-international.com> wrote:
> I have an impressive drill bit in my office. Diameter is 8mm (that is > 0.32"), and length is... 2100 mm! (Yep, that is 82.7"!). Was made > specially > for my KR2. Understand why? > > The idea is: I am preparing to get inspected by the French authorities. > The > French law makes no provision for an imported homebuilt, so I had to > persuade them that there would be no difference with a new project. They > agreed to give it a try, provided I find a way to make my spars > inspectable. > > So, the proposed solution, as suggested by our Austrian builder (Christan > Kogelmann), is to drill a hole along the spars, right in the middle of > the > spar spacers, and inspect with a borescope. > > Now, for those who didn't follow the story, I am now living in Tunisia, > and > my poor KR is in France. So, I will have to take that drill bit along > with > me when I go there. What is the airline going to say about that, I > wonder... > > Anyway, the critical thing is to drill those holes very straight, > especially > in the aft spar. > > My intentions are: > 1 - Make two wooden drill jigs (wood blocks with a hole through them), > one > for the front spar and one for the aft spar, matching the spars side > section; > 2 - With wings removed, clamp the jig between the WAFs > 3 - Starting with a short drill bit, slowly drill through the first > spacers; > 4 - Take the long drill bit, then finish the job. > > Since I cannot see the aircraft, I checked the construction manual to > find > the dimensions of the spars side section. When I add the spars dimensions > and the plywood, What I get is: > > OUTER WING FWD > Caps Ply Total > H 7.28" (184.9mm) > W 2.031" (51.6mm) > > OUTER WING AFT > > H 4.03" (102.5mm) > W 1.03" (26.2mm) > > Could somebody check these dimensions for me? > > > > > Serge Vidal > KR2 ZS-WEC > Tunis, Tunisia > E-mail: serge.vi...@ate-international.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 > > > _______________________________________ > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html -- Using M2, Opera's revolutionary e-mail client: http://www.opera.com/m2/
