Hi,
Here are the modificaitions I did to combat any potential wing failures. Its a thin wing and any additional strength is advantageous.
I didn't like the light ply joiner that came with the kit. It wasn't thick enough and wobbled front-to-back and up-and-down in the joiner socket. I believe this has a lot to do with the wing failures...no solid mechanical bond. I decided to fabricate my own out of aircraft ply. I sandwiched three layers of carbon fiber, the middle layer at a bias to the outer layers, between aircraft ply with 30 minute epoxy and clamped overnight. I traced the outline of the original joiner and cut out the new joiner. I sanded it to snug fit the joiner box with just enough room for epoxy.
Also, if the covering is not removed from the wing roots, they won't make solid contact with each other during epoxying. There isn't much surface area to begin with since the ribs have lightening holes. A razor plane made quick work of this. I estimate 1/4 of the wing root surface has covering on it. I used rubber bands around the leading edge dowels and around the flap openings at the trailing edge to clamp the wing together during epoxying.
The split landing gear also contributes to wing failures. A hard landing directs all force to the wing root. I made some straps out of aluminum to connect the two gear sections together. Now all I have to do is fly it. Hope this information keeps other Lancairs from suffering wing failures.
Thanks
CAsniffer