mikeymike

If you plan on just 'messing with it' then you may want to consider 2 other mini cams that are gaining popularity, the Contour HD and the Replay XD http://www.roadbikeaction.com/Tech-and-New-Product-News/content/122/3872/Replay-XD,-The-Worlds-Smallest-Action-Camera.html Another action cam thats really really cool if you have a Android or iphone is the Looxcie http://www.looxcie.com/ The best thing about the Looxcie is the 4hrs recording time. All the others record for about 2 to 2.5 hrs

yeah I don't know if you can even find those retro Integralter caps/covers anymore

yes, if you look at the OP's picture, that silver/chrome middle of the steerer insert is actually a collar that slides out

Its more than just O-Rings. The top of the Integralter is flat. The base of the Sigma and most other computer mounts have a curved/arched bracket. The computer would rock back and forth and constantly move around. A proper tubular shaped mount is needed. You don't know this bar, so I guess your imagination will be limited

Actually, its a 1 1/8th steerer. Cinelli made this right when 1 1/8th steerer tubes was just starting to become popular. Great hindsight from Cinelli!! The bars come with a insert that allows the fitting to 1" steerer tubes.

I guess you're a young guy as this Cinelli Integralter bar was made before carbon bars or any other carbon parts was even made. In fact, when this bar was introduced the only popular carbon part was forks. And the only full carbon bike frame was made by Kestrel and everyone back then though it was weird. Also, this Cinelli bar was especially made with Mario Cippolini in mind. lastly, the O-Ring system of the Sigma's would not work. The circumference of the Integralter is extremely large. The center block is much larger than any oversized stem available.

What you need is a headtube mount like this http://img51.imageshack.us/img51/6118/headtubemount.th.jpg It mounts under your stem cap. This is also perfect for TT bars where computers are impossible to mount. Get it on eBay http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&item=270755656483&clk_rvr_id=236453979604