Last time I flew my super cub it kept wanting to turn to the left. I noticed that the left half of the wing was slanted a lot more than the right. Would this be the problem?

Some things that helped me with that problem...

Check the wing. Make sure it is tight, straight.

Check the tail assembly, the fin that is parallel to the ground can get loose and move back and forth. Jam something between the fuselage and the fin to keep it stiff(piece of wood, or hot-glue).

Make sure the servos are well-glued in, if not hot-glue or epoxy them in.

Take off the cowl and check the motor mount(the plastic part on mine was loose causing erratic flying). Hot glue that sucker so that it stays put. This solved a lot of problems on mine because it was loose the plane kept going right.

Check your prop, is it straight, bent, dinged?

You may have to retrim the servos by hand (I don't know the techy term for it). Unscrew the little white arms when the receiver is turned off. Turn on the receive with the trim at neutral. Manually make the rudder/elevator straight, then carefully attach the white arms again to the servo, trying to keep them exactly straight. The plane should now be trimmed in neutral. You will still have to adjust it though.

Hope one of those works, but mostly a big crash can jar stuff loose that you don't see but can make the plane fly funny. I had to completely re-assemble mine after a particularly hard crash which looked innocent, but in the end had loosened the servos and the motor mount, making it very hard to fly straight.

Have fun!
/Tom

Ok thanks

The problem was what I thought. It flies AMAZING! Thanks anyway. I wrecked it though. I was stupid and didn't put the rudder servo linckage wasn't on tight so it came loose during flight and it slamed into a pile of dirt. Luckily it was soft dirt. The only thing that broke was the prop and the linkage between the pushrod and the rudder. I really like how tough this plane is.

Ok now the engine sputters whenever I fly it. I didn't crash it before the problem except for the one I already told you about. I know it isn't the reciever. I think it is the transmitter but I'm not sure. Can I get some help?

First, make sure you have a fully charged battery in the radio and plane. Weak batteries always cause glitching. Then check the location of the antenna inside the plane. Make sure it isn't too close to the esc or battery. If that doesn't work, try re-routing it to the outside of the plane.

Edit: Also, after making sure you have fully charged batteries in the radio and plane. Perform a radio range check. Have a friend hold the plane while you walk away a specified distance (read manual for specified distance) and check the controls and make sure there is no glitching.

Does the antenna being too close to the reciever make it glitch?

Yes it could be and it depends on what receiver it is. I have the DX6i which uses the new DSM technology and I read on Horizon that there was a number of glitching problems that were caused by the antenna being routed the wrong way out of the receiver. The solution was to re-route the antenna and it would be fine.
I don't know enough about the Super Cub to say. What does the antenna look like? Is it a small short piece of hard wire that can be bent around or is it a long soft wire?
Have you checked the other things I mentioned??

Ya I have checked everything else, the connections the batteries. Everything. Couldn't find a thing wrong with it. The antenna is a long soft one.

I would say either try and re-route the antenna away from the electronics and maybe the best way to do that, is to re-route it outside the plane. Use some tape to secure it to the plane and let it hang down by the tail.

Or, if you bought it recently, take it back and get it replaced under warranty.

Ok I'll try that and I hope it works

I've had the same problem with a couple SC's. Besides what was mentioned above I've also had two other things cause the problem you're having. If using the stock 27mhz radio, the ACT can glitch and cause sputtering or even kill the engine completely, turn the ACT off and see if helps. If using the stock motor, there is a diode soldered between the wire leads on the front of the motor, the connections can get damaged in a nose first crash and also cause sputtering. Otherwise it probably is a battery or antenna issue.

I've already checked all the connections and they are fine. Nothing wrong, and I fly with ACT off now. Thanks anyway!

Good thinking about the motor diode. It totally forgot about that.
Another idea, since the stock diode is probably one of the cheapest things on the plane, pick up another one and put it in place. The stock one might be bad.

I strung the antenna outside of the plane. I flew it last night, and I guess it worked. It didn't stutter once, but I'll look at the diode.

One thing we all forgot to mention.
Flying too close to high voltage can also cause problems. There was a field in GA I like to fly in and it had large power lines on one side of the field. Everytime I got with in 200ft of the lines my Aerobird would start glitching real bad and I almost lost her a couple of times. I learned to stay away from power lines. There can also be underground power lines that can cause problems. I knew some guys that were having trouble running RC boats in their local pond and found out that there were some power lines that went right through it.


So anyway, it it is working, fly it a few more times and see of the glitch comes back. You may not have to mess with the diode at all.

On one of my flying fields it has powerlines near it, but It doesn't make it glitch. I flew it about 5 feet above it. Ya, I know a little too close. Anyway it didn't glitch.

Ok it did it again, but I looked it up and found some ways to fix the glitching so i'll try those.

Let us know what those ways were and which one worked for your case.

Make sure the ACT switch hasn't been turned on, as that will definitely make the motor sputter.
Had the same thing happen I thought all the glitching was a bad radio.

True,
but he said he had ACT off.

Ya, I'm good enough that I can fly with ACT off. I looked it up and you guys have named everything that other people said were wrong. The only thing that you didn't mention was that the crystal in the plane comes loose sometimes and the way to fix that is to take electrical tape and tape it down. I did notice that the crystal was loose. I've already taped it and did a range test. It seems to work. I'll have to fly it to get the real answer. It makes sense because on my last flight I noticed that it only sputters in the first 2 minutes of my flight so I guess it stops when the crystal settles back into place and I guess when the plane takes off it knocks the crytsal around.

COOL!! Glad you found it.
Alot of us aren't used to using crystals anymore. I am on DSM2 technology that doesn't use crystals. So I didn't think of that.
I will keep it in mind.

I haven't tried it out yet, but so far on all my range tests it has worked and it is the only one that makes sense to me. So my fingers are crossed.