loose water bottle mounts

[jetstream]

I've finally tracked down an annoying rattle to loose water bottle mounts (after suspecting front mech / bottom bracket/ cranks, etc.) The frame is an alu GT LTS 1000, so I'm guessing the mounts are swaged in rather than brazed in. I've stripped the paint of the frame so now there is probably a bit more clearance around the mounts.

My question is - can they be re-tighten or replaced? I've thought about loctite-ing them in, but the clearance between the mount and the frame is probably too large for the glue to cure properly

 

[azaro]

What about wrapping some PTFE tape (the type plumbers use) around the threads?

 

[Lysander]

I've had the same problem- if it's a rivnut (kind of like a pop rivet with a threaded inner), have a look at:

http://blogs.sun.com/chrisg/entry/tightening_a_rivnut

 

[jetstream]

thanks for that, but I had to google what a rivnut was

I've had the same problem- if it's a rivnut (kind of like a pop rivet with a threaded inner), have a look at:

http://blogs.sun.com/chrisg/entry/tightening_a_rivnut

this looks like it might solve my rattle, so I'll give it a go

 

[8690q]

My local bike shop has tightened the rivnuts on a frame for me before.

The mechanic said it might not last to long and might need the old ones drilled out and new ones fitted.

I sold the frame ages ago but as far as I know the bottle cage rivnuts are still tight.

The mechanic used something that looked like a rivet gun but it threaded into my bottle cage mount.

 

[mattbrown]

i have replaced a rivnut, and have the tool to insert a new one, quite cheap off ebay

 

[weeman_mtb]

The method shown in Lysander's link works perfectly to tighten up a loose rivnut, I've used it to tighten hundreds at work that the machine under-torqued.

 

[WD Pro]

The mechanic said it might not last to long and might need the old ones drilled out and new ones fitted.

Unless it was mechanically damaged, I can't see the logic in that ? The fix should be as good as new

WD

 

[8690q]

Maybe it had been nipped up before ?

He just didn't feel it was gripping properly but it was cartainly better seeing as it wasn't spinning in the frame

 

[jetstream]

one last post to say how I got on with this one. None of the solutions that I tried for this worked (including this one that I found on the Park Tools site http://www.parktool.com/blog/repair-hel ... e-fittings). The only option was to shell out £15 for a proper rivnut tool off ebay.

No more rattles now though