The biggest change is no mass, or weight, to keep it flying when you pull the power. taking off, flying, should be little problem. Until you get used to it i would recommend flying it all the way to wheels on ground, then pull power. When making a ,quote, normal landing, at the phase where just above the runway and pulling power to float to that perfect landing you will drop like a rock. Problem with no mass is when over runway, at say 35 mph, and pulling the power, that giant fan, brake, says i want to fly 12 mph, and it wins. result, extremely rapid slow down to below stall speed, and drops like a rock. I have eyewitness, on board video, and video from in front of machine when this happens. Once you get used to it it is no big problem and easy to use in your favor.