I don't have the plans or assembly manual for a Sig 1/4 Cub. I do have a wing that does not have ailerons on it. Or, at least I don't know how they would go on. Does anyone have an idea. I will post a picture of the wing. Not sure it was made right.

I built one, but I don't remember how the ailerons were setup - except for the fact that I remember they used a single servo in the middle of the wing.

Post a pic and i'll try to help you out.

Here are some pics. MinnFlyer.

Sorry the puter kicked out.. I'll try again

Ok, ready for some fun?

Under that sheeting near the TE there should be two spars. Make a cut between them to remove the aileron from the wing.

Now trim off the excess sheeting so you have a top and bottom spar flush with the TE of the wing and the LE of each aileron.

Next you'll need four strips of 1/4" balsa. Glue one to each TE of the wing and each LE of the aileron.

Sand them flush with the top and bottom.

Bevel the LE of the aileron.

Aren't Sig kits easy? [:@]

Man you gotta be kidding me. What a Mickey Mouse setup-Leave it to Sig.

back when this kit was engineered it was real common practice to build the wing and then saw the ailerons out with a Zona razor saw or band saw.

It's still M-I-C-KEY MOUSE It sure seems like the LE of the aileron is really thick.

If I remember the aileron leading edge is tapered or rounded. You are seeing the major dimension

Maybe I cut it in the wrong place. I was trying to go by MinnFlyer's drawing. It must be 1" thick at the leading edge. Probably should have waited until I got a assembly manual from Sig. But!! you know how it is: GOD! grant me patience, RIGHT NOW!!!!

It could be that the TE is 1/8" and the aileron LE is 3/8"

It's been a lomg time since i built one and I really don't remember

MinnFlyerI am 70 years young and I have never seen this setup before. Where you had to cut the ailerons out after the wing was built. Guess I didn't build many Sigs.

It used to be a fairly common practice. It's still not unusual to see on a builder's kit. On the Sig 1/4 scale cub, all of the Fuse and stab formers were not even die-cut - they were printed on a sheet of balsa and you had to cut them out by hand.

Not just SIG, but numerous designs use the technique of building the ailerons together with the wing then subsequently cutting them apart. It's one way to be sure it is a good fit. As far as the thickness, it is what ever it is, as in scale building. Often sport planes get by with a mismatch as to wing trailing edge thickness and aileron leading edge. It may not look scale, but it works OK.

I guess it is OK to do it that way. It just seems that the size of the ailerons are hugh. Not only that but they are very thick at the TE of the wing and LE of the ailerons.

Well here are the pictures. If I add 1/4 stock to the LE and TE it will make the aileron stick out beyond the wing. If I don't, I don't have any way to mount hinges. OH!!!! decisions, decisons, decisions.

I think you had better get the Sig plans and instruction booklet before doing anything else?

I have already ordered the instruction Manual. Probably end up getting the plans as well. I know I am in over my head on this aileron project.

Real Cubs had big "barn door" ailerons. The kit is 1/4 scale so parts of the model will be masive as well. I personally think it's kind of cool.

Getting the plans and instruction book was definitely a good idea. Whenever I personally try to guess at something on my own, I usually end up being wrong. You should have a really nice airplane when you get it finsihed.

As for building the ailerons with the wing, it is pretty common. I have a Top-flite P-47 kit and it isn;t done quite like this one but the ailerons are framed as part of the wing structure then cut free along the LE during the build process.

They are barn doors for sure. Looks like 3-D ailerons. Sent for the manualguess I will have to part with 30 yankee green backs to get the plans, unless I can find them cheaper someplace else.

I am going with dual servos on the ailerons, probably pull-pull on the rudder and elevator. I will muddle through this yet.