I part way through building my Sig LT-40 Kadet and was speaking to the guy in the hobby store where I bought it from. He was telling me his friend is an instructor and uses the LT-40 as a trainer with his students and has build 7 or 8 of them. I was told to drop the wing angle down by about 8mm as the plane has a 2 degree positive angle and gives the plane a very easy stall and float characteristic, by dropping the angle to 0 would make the plane a nice plane to fly and have less tendency to float up when flying. I’m not talking about the Dihedral angle I’m talk about the angle of attack from the side.

Has anyone done this of does it sound like B/S…

It's done alot, especially with flat bottomed trainers that are flown fast. Altitude control on this type of craft is somewhat controlled with the throttle. The planes tend to balloon a little into the wind, and sink a little downwind. You may want to build it stock and just shove some homemade plywood shims at the rear of the wing after you've flown it for awhile. It's nice to get lots of information but don't let it get you all confused. Talk to as many people as you can and then do what makes sense for you. Hope that helps_bob

build it and fly it,most of the mods. are b/s as you say,a lot of the changes do not help the plane for the purpose it was intended for,then other people make changes just to be different,not fly better just be different.

TerrellFlyer, I feel if the thing flew better that SIG with all there R/C plane experance would of changed it, but some backyard flyer in Australia has made it better......Hmmm hard to believe

Like you say it's people being differant, The same with car setup with toe-in angles, some like it loose and some like it tight......

I think I'll stick with the main stream and build to the plans

Build to plans! balancing point and engine thrust can change any flight that you need on a trainer. Keep plane as light as possible .Install radio as per.plans battery can be moved forward or back to balance. Engine power and weight will change flight . Fly with recomended engine to start. Also balance wing lateraly be for covering will save a lot of trimming in the air.
Use Lt40 for instruction in or club.
FLY SAFE

The only thing I love better than my LT-40 is my wife. I got the ARF version since I have little time for building and do not posess the builder skills of most modelers. I learned to fly with a Tower Hobbies Trainer and believe me, I wish I had the LT-40 to learn on. The only "mods" I made to mine was to install wing bolts in lieu of rubber bands. I did try the "popsicle stick" method of changing the incidence, (stick at the rear) but settled with 2 plastic washers under the aft wing bolts. With a Magnum .52 four stroke I can fly around at half throttle for 20 minutes. It jumps off a grass strip in 30 feet or less. I will be getting another LT-40 ARF and the only mod I will make is to take out the dihedral and have a straight wing. Good luck with yours!

As generally stated above, build it per plan. Later, when you fly it, you might find that you need to adjust the thrust line a bit; if it climbs under high power and flys well at low power, just increase the downthrust until it does not zoom upward when you advance the throttle from cruise to max.