RE: Sig LT-40 Build
somegeek,
I just finished my LT-40 not too long ago and I had also noticed that the dihedral gauge was a little odd looking. Knowing that I could cut another one from the pattern left in the scrap, I carefully sanded the corners of the gauge with a sanding bar until the dihedral and W-2 parts of the gauge were flat. I built the wing using the modified gauge and the dihedral in the wing was correct when checked using the DTG before and after I joined the wing together.
I used epoxy on the firewall and tail-feathers, but I also used CA when I joined the wing halves. In my build thread "Starting LT-40 Build" on post #6, Mindwarp states that he used the CA method 3 years ago and has had no problems to date. After reading the MajorTomski post (post #24) on your thread here, I am not worried about my wing at all. The parts fit when I dry fit the wing was even and tight. I flowed CA onto the FG tape after using spray adhesive to tack it down. It applied smooth and without bubbles.
It seems that we used all the same gear except that I left mine in a tricycle landing gear setup.
I too, routed my antennae out the bottom under the RX except that I drilled the hole slightly larger and used a piece of fuel tubing through the fuselage for a stress relief in addition to the one inside the plane. The T-pin I used toward the rear of the fuselage has a 90 degree bend so it would hook over former F-5 and then glued it in place with CA.
I also painted the engine and fuel compartment areas. I used SIG Butyrate Dope.
I don't know if you intend to beef up the area where the Fin mounts to the Horizontal Stab., but it seems to be widely agreed upon that triangle stock should be used in this area. I did not use as much as I as wish I had, but it seems to be quite strong. Definitely stronger than it would be without it.
I ended up changing the stock wheels to 3 1/4" on the nose and 3 1/2" on the main gear because I fly off of grass and the originals were a little too small, making it hard to get up enough speed to take off.
Your build and covering job looks top-notch by the way!!
Here's a some of pics to show a couple of the things that I did.
Gene