Originally Posted by fishycomics
I like your idea,
and it does seem to produce very smooth video. If I may, I can suggest something that might be easier than dealing with the string. You could use rubber bands in both positions by either using different sized rubber bands to wrap around around the camera and to connect that rubber band to the heli frame, or use a large rubber band and tie a knot in one end of it, to make a small loop on the camera end, and a larger loop to reach up over the heli. Maybe use 2 of them coming from opposing sides.
When I eventually try a camera on my mQX, I'll try something like your idea.