There are a couple of threads where people have. I can tell you that the YS .63 gives this thing unlimited vertical and great performance. Even at slow speeds it maneuvers great and does all of the 3D stuff. From your profile it looks like you're into electric. If so you'll want the 3A and not the 3D. The two are different in many ways. The electric version with the cockpit that comes off is a 3A. The 3D is strictly glow fuel. Noticed you're from Kent. My wife is from London. I spent 9 years in the UK. Loved it. Was just back last August. Had to have a pint of real ale and a pork pie!!!