In this video, we test the engines after the rebuild from the blown piston. We did a minimal engine run test to ensure the rebuild went as well as we thought (which it seems to have), then moved on to a flight controls test. This time, though, we brought in a veteran quad copter designer and pilot to give his thoughts on HLQ's controllability. He gave it a bit more of an aggressive input than we probably would have (simply due to our inexperience with actually flying) and ultimately gave us a thumbs up with regard to control reaction and overall controllability. We also took the opportunity to do a static pull test and go full throttle/pith to help determine what kind of lift capacity we have. HLQ weighs in at about 70 pounds, and we say a max pull of about 90 pounds. But, when HLQ came back to idle, the scale was at 7 pounds with no pull on it. So, total, we are looking at about 150 pounds of lift. That exceeds our expected lift of 130 pounds, but this is likely due to us being in ground effect. Higher above ground, our actual lift capacity will probably come in right near what is expected. With these tests successfully completed, we moved on to a tethered flight test, which will be the subject of a the next video.