Ever since seeing rotor riot's video where they made a 5inch bone drone, I have been facinated with the concept and had to make my own. I decided to make a 3inch using a cheap frame of banggood as I didn't want to spend more on a 5inch for what was going to be mostly a novelty build. It is setup just like a regular quad but with two motors facing down. It is running on 550mah 3s batteries on 5500kv. The only difficulty i encountered when building this was that the flight controller wouldnt fit when placed right side up, meaning it had to be put in upside down then remapped in betaflight. It flies suprisingly decent, not as good as a regular 3inch 3s setup but then I didn't expect it to. Its very fun to fly however as it can hit ridiculously small gaps, you can just dive a tree canopy without even searching for a gap. Only annoyance is you have to put it on something to take off as the props will strike the ground otherwise. Obviously it can't turtle mode.