It will hang on the prop for a few seconds before falling off when I'm trying to do the hovering stuff. When going vertical at speed, it will climb a pretty good way before slowing down. Mine is the original version and weighs 13lbs. I did move the firewall back about 1.5 inches and made a hatch for the tank compartment. A friend just built one of the new versions and it came in just over 11lbs with a Homey in it.