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 Post subject: Re: innertubes...Grrrrr!
PostPosted: Tue Jul 16, 2013 8:54 pm 
rBoTM Winner
rBoTM Winner
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Joined: Tue Mar 27, 2012 9:28 pm
Posts: 3104
Location: Mansfield Woodhouse, Nott's.
TGR wrote:
you never know what you might come across. Richard

Erm! Food! Babies nappies! Chemist! :facepalm:


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 Post subject: Re: innertubes...Grrrrr!
PostPosted: Tue Jul 16, 2013 8:57 pm 
Old School Grand Master
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Joined: Sat Oct 06, 2012 5:17 pm
Posts: 3775
Location: Norn Iron
and beer!!

Richard


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 Post subject: Re: innertubes...Grrrrr!
PostPosted: Tue Jul 16, 2013 9:00 pm 
rBoTM Winner
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Joined: Tue Mar 27, 2012 9:28 pm
Posts: 3104
Location: Mansfield Woodhouse, Nott's.
TGR wrote:
and beer!! Richard

That will come under 'liquid food' :lol:


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 Post subject: Re: innertubes...Grrrrr!
PostPosted: Thu Jul 18, 2013 5:18 pm 
rBoTM Winner
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Joined: Tue Mar 27, 2012 9:28 pm
Posts: 3104
Location: Mansfield Woodhouse, Nott's.
Been chatting to a friend who runs a bike shop and he has noted that there are more and more butyl tubes
that can't be repaired as the patch does not stick no matter which puncture repair kit it is cheap or quality.

So he as asked about and manufacturers are putting plastic into the production line to lower production
costs though this is showing as many are failing and can't be repaired! Time to look for old stock tubes.

This may explain why a patch is not vulcanizing on the tube as the rubber has plastic in it :facepalm:


ian.


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 Post subject: Re: innertubes...Grrrrr!
PostPosted: Thu Jul 18, 2013 11:41 pm 
Retro Guru

Joined: Wed Sep 14, 2011 7:28 am
Posts: 300
Location: Fife
That would explain it, maybe I'll just have to start carrying a spare tube.


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 Post subject: Re: innertubes...Grrrrr!
PostPosted: Fri Jul 19, 2013 7:22 am 
Old School Grand Master
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Joined: Sat Oct 06, 2012 5:17 pm
Posts: 3775
Location: Norn Iron
An odd thought -

this jumped into my mind just now - do i remember seeing my father burning a tube with a lighter before he patched it????????? Have i made that up? This would have been in the seventies. Any ideas why or is my dodgy memory playing trick on me in the heat!

Does that make sense?

Richard


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 Post subject: Re: innertubes...Grrrrr!
PostPosted: Fri Jul 19, 2013 4:10 pm 
Old School Grand Master
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Joined: Fri Oct 14, 2011 8:41 pm
Posts: 8230
Location: Cumbria
I thought vulcanizing was to do with heating up rubber with sulphur?

Butyl tubes have been standard since the 70's IIRC, there were lots of arguments about them back then with latex having been king for so long.

Shaun


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 Post subject: Re: innertubes...Grrrrr!
PostPosted: Sat Jul 20, 2013 8:38 am 
Retro Guru
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Joined: Sun Jan 06, 2013 9:51 pm
Posts: 277
Location: AL5, Herts, UK
These are brilliant. I would not use anything else now.
http://www.parktool.com/product/super-patch-kit-gp-2


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