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Loose water bottle boss

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Old 04-08-08, 09:09 PM
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tellyho
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Loose water bottle boss

Cannondale frame, pulled the cage and the boss (not sure if it's still called that if it's not brazed on) is loose in the frame. Not pulling out, but wiggles in the hole. Easy solutions, other than listening to my waterbottle rattle every ride?
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Old 04-08-08, 09:24 PM
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You probably have a riv-nut. If you don't have the proper rivet tool die for riv-nuts, you can try using a longer version of the metric bolt for the cage. Have a flat washer and nut too. You are going to try to re-compress the riv-nut. Thread the bolt into the riv-nut, with a flat washer resting on the riv-nut. The nut should be already on the bolt. Hold the bolt stationary, and spin down the nut against the washer. Carefully torque the nut to squeeze the riv-nut's inner flange. If done correctly, the riv-nut should be tight against the tube wall.
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Old 04-09-08, 10:54 AM
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Late to the party, but any decent shop should have a tool to do that. On my SystemSix, two of the riv-nuts were loose, so I had the shop I got the bike through tighten them up. Took about 30 seconds each.
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Old 04-09-08, 11:02 AM
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Originally Posted by truckin View Post
Late to the party, but any decent shop should have a tool to do that. On my SystemSix, two of the riv-nuts were loose, so I had the shop I got the bike through tighten them up. Took about 30 seconds each.
True. But how much ~$4/gal gas and travel time, a major consideration for many? It's great to have a simple fix like that provided by WNG and a good reason why this forum is so valuable.

Eric
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Old 04-09-08, 01:22 PM
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Here is from Park Tool site - water bottle fittings.
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Old 04-09-08, 01:25 PM
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That Park Tool tip looks awesome. I hope I get a loose riv nut so I can try it!
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Old 04-09-08, 07:16 PM
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Originally Posted by BikeGarage View Post
Here is from Park Tool site - water bottle fittings.
That's a cool tip from Park! Thanks for pointing it out BikeGarage!
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Old 04-09-08, 07:23 PM
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Meh, I like using my shiny Riv-nut tool.

I wonder if I can stick a motor on it...
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Old 04-09-08, 10:17 PM
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Originally Posted by Wordbiker View Post
Meh, I like using my shiny Riv-nut tool.

I wonder if I can stick a motor on it...
yes, you can. Set the riv nut tool on the floor, then open the release valve on the cherry picker with the rat motor hanging from the boom.
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Phobias are for irrational fears. Fear of junk ripping badgers is perfectly rational. Those things are nasty.
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Old 04-10-08, 02:03 AM
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Originally Posted by Wordbiker View Post
I wonder if I can stick a motor on it...

motorized.

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Old 04-10-08, 07:33 AM
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Originally Posted by Soil_Sampler View Post
motorized.

Fookin sweet!

That pwns any wimpy skewer trickery.
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Old 04-10-08, 08:15 PM
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That Park trick is out of control. Thanks for the link.
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Old 04-11-08, 07:27 AM
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Originally Posted by truckin View Post
Late to the party, but any decent shop should have a tool to do that. On my SystemSix, two of the riv-nuts were loose, so I had the shop I got the bike through tighten them up. Took about 30 seconds each.
+1 Take it to a Cannondale dealer. It's a Cannondale.

One more word. Warranty
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Old 04-11-08, 02:30 PM
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Originally Posted by EricJ View Post
True. But how much ~$4/gal gas and travel time, a major consideration for many? It's great to have a simple fix like that provided by WNG and a good reason why this forum is so valuable.

Eric
Also true, although I just went by after a ride to avoid driving there
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