Flapperons. But be careful, different planes act differently than others when they are used. Best to test them at a high altitude, so if your plane wing stalls suddenly, then you know your model can't handle it. Another way to slow up the plane is to shift the CG back a little, you might be nose heavy. With my planes I move the rudder back and forth to slow my speed down, just like I do with the full size aircraft when I'm coming in too high.


Pete