SummaryUpdate 28/12/15: Added new arms with support for 22mm motors with M3 mounting holes. Update 20/12/15: I updated the lower plate and recommend printing it again if you printed it yet. I also finally got the bumper ready so your camera is safe again. I still need to make the cable holders under the motors. Update 07/12/15: I now uploaded nearly all parts I still have to change some things at the bumper. I will upload as soon as possible. This is the all new Firefly Pro. Its a 250 size quad thats designed for the race track. It is still a work in progress but right now I am working out the last edges. A short guide with build instructions will be uploaded soon on also follow me on Instagram for the latest build updates!