Interesting...I would like to know more about its stability...Do you have any videos?
Cool idea though
As is, its stability was probably questionable, but it was never used since I purchased a Wingnut shortly after this photo was taken and my wife inherited my Camelpak.
A simple upgrade would have been some sort of a wide / fitted back-plate of urethane foam (like a man-bra cup - LOL) to stop the sideways motion.
"Wish not so much to live long, as to live well." - Benjamin Franklin
I made a mount by attaching a flat adhesive GoPro mount with two bolts through a flat-topped headset topcap. Works ok, but there is some high frequency vibration. Nice and smooth when the bike is in the air. Can't see the stem in shot when using 720p 16:9 mode. I will post pics when I get to 10 posts.
I also made one from an old Vistalite handlebar mount for attaching to the seatpost. This one works really well. I tried it on the handlebars but with less success.
Strangely, on playback, even when the image is jumping up and down with vibration, the lens flare is perfectly smooth.