Fixing a stripped bottle cage boss on alu bike

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Serious Cat
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Fixing a stripped bottle cage boss on alu bike

Postby Serious Cat » Mon Sep 16, 2013 22:12 pm

Now the weather has most certainly turned for the worse its time to dust off my winter bike. Its an aluminium cannondale saeco caad and the top boss on the seat tube is stripped. Bike is silent when I haven't got a bottle in the cage, but if I insert a 800ml bottle and ride over rough ground then its pretty noisy. The noise is definitely coming from the fact the cage isn't held tight at the seat tube top boss, is there an easy way to resolve things so the bottle cage is held firmly in place and doesn't make a racket over uneven roads ?
This serious internet site..............I serious cat

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wishitwasallflat
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Re: Fixing a stripped bottle cage boss on alu bike

Postby wishitwasallflat » Mon Sep 16, 2013 22:32 pm

Do you mean the threads on the rivnut are stripped? If so if you have the right tool (decent lbs) will have one its an easy cheap job to fit a new one.

mattv
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Re: Fixing a stripped bottle cage boss on alu bike

Postby mattv » Tue Sep 17, 2013 06:43 am

Any idea where to actually get the rivnuts from? My lbs has run out, and doesn't know where to get more from. That supplier has stopped doing them apparently.

JackPozzi
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Re: Fixing a stripped bottle cage boss on alu bike

Postby JackPozzi » Tue Sep 17, 2013 06:52 am

We use them at work supplied by a company called toolcom, would think that plenty of hardware companies are to supply them though, they're not a cycling specific item, just a 5mm nutsert

Yossie
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Re: Fixing a stripped bottle cage boss on alu bike

Postby Yossie » Tue Sep 17, 2013 20:31 pm

Machine Mart/Sealey Draper/any tool factor/ebay/t'internet. Everybody does them, 10 a penny (literally - its the tool that costs about £20).
This is only a joke by the way, I am in no way implying directly or otherwise that there is any kind of link or similarity between BR and North Korea :)

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Pinno
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Re: Fixing a stripped bottle cage boss on alu bike

Postby Pinno » Tue Sep 17, 2013 20:46 pm

Re-tap the thread with a 'tap' 1 increment larger than the existing hole. Its soft and should be easy to tap.

Something like this ?
"It's really tough to make a living, but a man's just gotta try" Disgruntledgoat - who owe's me 10 Goat Bucks

S - The womens Brazilian beach volleyball team
W - Wiggle Honda

Seantheconn: más afeminado que un jamboree de Guías Internacional

JackPozzi
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Re: Fixing a stripped bottle cage boss on alu bike

Postby JackPozzi » Tue Sep 17, 2013 20:53 pm

pinarello001 wrote:Re-tap the thread with a 'tap' 1 increment larger than the existing hole. Its soft and should be easy to tap.

Something like this ?

Could end up with the nutsert spinning with the tap stuck in it though, and that's a bugger to remove without causing damage.

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Pinno
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Re: Fixing a stripped bottle cage boss on alu bike

Postby Pinno » Tue Sep 17, 2013 21:06 pm

Wonder if you could use a 'Helicoil' kit. I have used them for Spark Plug holes but never on something that small.
A bolt size slightly bigger might just self-tap, done gently.
"It's really tough to make a living, but a man's just gotta try" Disgruntledgoat - who owe's me 10 Goat Bucks

S - The womens Brazilian beach volleyball team
W - Wiggle Honda

Seantheconn: más afeminado que un jamboree de Guías Internacional

DesWeller
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Re: Fixing a stripped bottle cage boss on alu bike

Postby DesWeller » Tue Sep 17, 2013 22:00 pm

pinarello001 wrote:Wonder if you could use a 'Helicoil' kit. I have used them for Spark Plug holes but never on something that small.
A bolt size slightly bigger might just self-tap, done gently.


You can't use a helicoil on a tube. They cannot be supported that way.

If it were my bike I would firstly try to pull the rivnut a little tighter to the tube with the tool, but failing that I would be looking at drilling it out...very, very carefully!

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freezing77
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Re: Fixing a stripped bottle cage boss on alu bike

Postby freezing77 » Tue Sep 17, 2013 22:04 pm

http://www.ebay.co.uk/itm/251278103638?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649

http://www.ridgelineownersclub.com/forums/showthread.php?t=15647

I have a proper nutsert tool (and nutserts) if you are near Walton on Thames.

The name rivnut is an american abomination and should not be used where english is spoken. :roll:

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freezing77
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Re: Fixing a stripped bottle cage boss on alu bike

Postby freezing77 » Tue Sep 17, 2013 22:12 pm

Before and after, please note the image shows stainless steel nutserts. For an ally frame best to use softer aluminium nutserts.

Image

DesWeller
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Re: Fixing a stripped bottle cage boss on alu bike

Postby DesWeller » Tue Sep 17, 2013 23:12 pm

freezing77 wrote:http://www.ebay.co.uk/itm/251278103638?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649

http://www.ridgelineownersclub.com/forums/showthread.php?t=15647

I have a proper nutsert tool (and nutserts) if you are near Walton on Thames.

The name rivnut is an american abomination and should not be used where english is spoken. :roll:


RIVNUT RIVNUT RIVNUT RIVNUT NAH NAH NAAAAAAH!

Phil_D
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Re: Fixing a stripped bottle cage boss on alu bike

Postby Phil_D » Wed Sep 18, 2013 07:32 am

Strap the whole thing down with a cable tie to stop it rattling

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Pinno
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Re: Fixing a stripped bottle cage boss on alu bike

Postby Pinno » Wed Sep 18, 2013 20:32 pm

Use a half gallon of Wynn's instant gasket/Hylomar.

I bet you feckers wouldn't know what hylomar is.

Hylomar Hylomar Hylomar Hylomar Hylomar Hylomar Hylomar Hylomar naaanaanannnanah.
"It's really tough to make a living, but a man's just gotta try" Disgruntledgoat - who owe's me 10 Goat Bucks

S - The womens Brazilian beach volleyball team
W - Wiggle Honda

Seantheconn: más afeminado que un jamboree de Guías Internacional

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MountainMonster
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Re: Fixing a stripped bottle cage boss on alu bike

Postby MountainMonster » Thu Sep 19, 2013 13:38 pm

Did somebody say they wanted their rivnut to be re-tapped? How sweet.


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