I have a rudder on a super sportster that is broken. Which glue is best for it? I do have foam glue (flexible) and also foam safe CA.

http://www.electrifly.com/largeelectrics/gpma6006.html

I've used regular Elmers wood or Titebond with good success.

As mentioned previously, the white/carpenters glues work well on foams, as does Epoxy, foam safe CA, and Gorilla Glue. There's even a foam safe version of liquid nails at Home Depot for gluing foam insulation panels that should be compatible. With Gorilla glue, be aware of its foaming up properties and make sure the parts are taped/clamped firmly in place. The foamy squeeze out from Gorilla glue is easy to trim with a single edge razor blade afer about 1 or 2 hour when the stuff has set.

Avoid ordinary CA, and solvent based glues like Ambroid, Sigment, and Duco.

Many use the WHITE Gorrilla glue. Dampen one side of the break by blotting a moist paper towel on it. It takes very little moisture. Apply the WHITE Gorrilla glue sparingly with a tooth pic . Tape together while the glue sets up. It dries white so it will be nearly invisable. It has the expanding or foaming action that fills gaps.

If there is a lot of compresion in the foam drizzle hot water over the affected areas first to re-expand the foam. Yours doesn't appear to need the hot water treatment though.

Your foam safe CA is fine too. It takes very little of any glue as the foam won't usully soak any up like wood will. Tooth pic again is handy here.

I prefer the white glues mentioned.

They dry clear and invisible.

If you did not loose any foam beads the break will be almost impossible to spot after it is repaired.

Thanks all. I got it fixed up ok. Not real pretty , but it is all assembled ,adjusted ,balanced and ready to fly now.

2011 was the trainer year. 2012 is going to be the sport flyer year.