Thread lock everything !!!!
I forgot to do one motor, and it started to come away from the frame - luckily I saw it as it took off and I narrowly avoided a nasty crash.
I've got the bigger Sunnysky's on my 450 now 2216 - 1100KV. Flight time has reduced to around 8 or 9 mins on 3S 2650 lipo, but it shifts carrying the servo gimbal, landing gear and go pro2. I ordered another 2212 - 980 so I have 6 of them in total to go on the 550 when it arrives. The 2212's were ok with the 450 with all the extra load, but I fancied a bit more poke!
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