This passed weekend I tried this with my e5s 530 scorpion , my e5 has 626 blades and speed up tail, on 12s. I waited til everyone was gone for the day put the jumper in and a 4400 6s , was lost of fun. Reminds me of scale flying but with aerobatics. I now have to check the cc log to see my head speed my guess is about 1200, my gov on the ikon is set to 2300, guess about half that. Ship is very stable and have good tail control, sounds so cool inverted, you can really hear the mains and tail blades. Great way to end a day of flying.