The plane does Rolls, Knife edge, inverted flight with ease. You do need high rates on the rudder for knife edge. I have 40 flights on her and each one is very enjoyable. Like I said earlier, you can't stall this plane. When coming in for landing, it slows to a crawl and sets right in. I'm hoping as soon as my Saito 120 is broken in, I will hover the thing. I did not mount the engine inverted. I figure it would have more reliable idle mounted sideways. The plane is worth every penny.