HulaHubsan frame X4 H107 (7mm motor)

super light weight Hula-hop hubsan frame!!! Just 22g.
If you are hubsan owner, just buy extra flight control board and motor for this frame. you get another hubsan for fun.

Note, this is for 7mm motor

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after test flight and crash... :(
I decided to enforce the outer ring design, to make it thicker.
Please download the V3.0 for this update