i was testing out a wing and wanted to see just how much thrust it had. i held it out in front of me and powered it up to WOT. then let go. and momenterely it hovered and if anything went up. then it came straight at me and hit me. only a flesh wound on the forehead but shure did hurt . it weight about 250g (9 ounzes) and had the same thrust. since have thrown the plane away not due to the incedent.