Hello, I have a calamato with a 51 super tigre in it and have a small issue.This combo really moves along but it has a tendency to wagg its tail a bit like a dog.I also had a ryan sta which did the same thing. Does anyone know why it does this and if there is away of stopping it. Its not dramatic and its a good flying plane, its just a wee bit anoying. Cheers the pope

Mine did too at high speed. And in a knife edge.

It's actually doing something similar to a Dutch Roll, only without the roll. Both are tail wagging and stem from the same cause. Lateral stability.

Try adding a bit more vertical stabilizer. Developers do stuff like that all the time. Cut a piece of wood that adds from a half-inch to an inch worth of chord to the fin/rudder. You can masking tape it to increase the fin forward. It'll stay on for one test flight and show you if that's a sensible solution. If it works, just clean up the fin, glue on a clean piece of wood, and cover the sucker with matching film. Or don't bother to match the colors, and show the world how to improve the sucker.

BTW, if you do that, also be sure to test the airplane's spin recovery with the test piece in place. The vertical stab/rudder area also affects how easily an airplane goes into and stays in a spin. But don't worry too much about the Calmatos. Mine were easy out.

Thanks for the reply while I`m not up to doing knife edges I`ll give your suggestion a try and see how I go. Cheers thepope

BTW, the last week or so, I've mostly been flying my new Tiger60. And noticed that it shows that tail wagging in the knife edge but not when straight and level. And realized the Tiger2 and Calmato Sport both do the same thing.

Guess that shows the vertical tail area is almost the right size, but not quite.

And all three of them produce a sound when in knife edge. My more aerobatic models don't seem to make that sorta deep, wind noise. Noise is energy, and I suppose it's signalling a significant amount of airflow separation somewhere. But it is worth noticing. And I've noticed the sound is steady, so doesn't appear to be associated with the hunting.

BTW, when a model shows an oscillation like that, on any axis, lots of modelers call it "hunting". It's like the model is hunting for the right direction. I only mention this because it's always struck me as funny. Very descriptive term, but funny.