Serge, Netters, I've left a air ventilation hole/expansion hole in the center of the Spar Web Blocks (Solid wood pieces between the upper and lower spar capstrips). They are about 8mm or 0,32" in diameter.
I know not everyone might have access to a borescope inspection tool, but with this tool and a 6mm (1/4in) probe you are able to inspect the insides of your spar (theoretical). Working for an airline (which has a variety of borescope inspection tools for inspecting the insides of jet engines) I tried this method with the my spars on the bench at our workshop. I've never tried this in an installed spar, although this method worked inspecting a tube frame of a Piper Cub and a K8 Sailplane. I think some car garages have such inspection equipment...so we just need the center holes in the Spar Web Blocks, they are not called for in the plans. And the bigger those holes, the easier the inspection is, but on the other hand might create structural problems. I figured, that having those holes in the center line (neutral line) it should not be a problem..... LG Christian OE-VPD http://www.members.aon.at/oevpd -----Original Message----- From: Serge F. Vidal [mailto:serge.vi...@ate-international.com] Sent: Montag, 19. Jänner 2004 18:12 To: 'KRnet' Subject: KR>How to inspect the wings? I'm now having a good idea of how to register my South African built KR2 in France. The main issue will be to prove them that the primary structure is sound. Now, this means inspecting the wing spars. The guys who will do the inspection want me to propose a convincing way to do so. I proposed to load the wings to design load (piling sandbags). He does not like it, says it's a good way to create problems rather than solving them. Any ideas? Serge Vidal KR2 ZS-WEC Tunis, Tunisia (pilot) Orleans, France (aircraft) _______________________________________ to UNSUBSCRIBE from KRnet, send a message to krnet-le...@mylist.net please see other KRnet info at http://www.krnet.org/instructions.html
