As you see in the pic there I don't have a swash follower. The linkages to the blade grips are big and solid and they basically become the swash follower this eliminating another mechanical part and beating system from the head making it a but lighter and less part count.
The dfc heads ride lower. Lower was means relatively higher cg. That means that now the manuevers like flips and rolls and everything will be tight. The head and body come closer and you get more responsiveness out of the bird. If you are flying kind of sport or 3D you'll notice a difference. The body won't walk behind your head, it'll all be more or less one. (or closer)
Why is it a big thing... First stated by compass in their helis.. They could make the blade grips beefier as they had some extra weight in hand to play with, and this they made the head beefier, sturdier and just hot in looks in general.
First they came out for 700's and then smaller and smaller.
There are discussions about all the load being on one blade grip bolt ad how that can affect but there's not much conclusion to it yet... So there you go... Hotter looking heli with better performance in manuevers

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