The quality of the nuts and rods is so extremely poor that it was really hard to assemble all the crap. The bearing dos not fit well, I had to adapt it with tape. The motors clutch is bad designed so I had to scratch some material off to make it work. There is no instruction in the box, I had to search on YouTube, and the board does not fit to an updated version of the software, it struggles to update its firmware. Just a poor cheap crappy copy of a brilliant idea. All in all if I would have k ew this before I would not have bought it.
thanks