by kman on Thu May 17, 2012 1:03 pm
M5 bolt, thread on M5 nut, then slip on washer, then thread into hole. Spin the nut and washer down until it hits the frame, then tighten it against the frame. Now tighten it a little more. What you're doing is effectively using the bolt to pull the inside of the bottle cage mount out of the frame (but it can't come out, it will squish and tighten against the frame).
I had to do this on my CAAD9 after using tune cages. The twist motion you need to use removing bottles worked the mounts loose so even when the cages were on tightly, they rattled in the frame. Switched to more normal style carbon cages and the problem has not happened again in the 2 years since.
Google "rivnuts", thats basically what they are. A rivet with a threaded section through the centre to thread the bolt into.
No need to re-rivet, do not use glue, putty or loctite. They won't work. Anyone suggesting any type of glue is misunderstanding the problem.
Oh, and do it sooner rather than later. Leave it too long and the rivetted part will become so loose it may spin in the frame and you will have a LOT of trouble getting the bottle cage bolts out.
You can't be a real country unless you have a beer and an airline. It helps if you have some kind of a football team, or some nuclear weapons, but at the very least you need a beer.
-- Frank Zappa