valve removal

Jim Roberts said:

Hi everyone. Simple question for those in the know. How do I remove the
valve cores on our tyres. We have need to remove them to put in some
"slime". Inner tube sealant.

If you have valves with car-type valves, these are called Schrader valves.
You use a valve cap with a little tool on the end to unscrew the valve
core. I've seen them on some bike inner tubes, and on cars.
Ask in a car parts store for a 'valve lifter' cap.
The tool is simply a little slot which fits over the bar at the top of the
valve core.

I tried a slime-filled inner tube myself once, wasn't that impressed.
hope you have a better experience.

Hi John.
We dont have the car type valves. Think they might be called presta ?
valves. Have undone the valve, the same way as I would to inflate the tyre.
The core, with a little brass knurrled nut is released, but wont come off.

any ideas

Jim R
"John Hearns" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Jim Roberts said:

Hi everyone. Simple question for those in the know. How do I remove the
valve cores on our tyres. We have need to remove them to put in some
"slime". Inner tube sealant.

If you have valves with car-type valves, these are called Schrader valves.
You use a valve cap with a little tool on the end to unscrew the valve
core. I've seen them on some bike inner tubes, and on cars.
Ask in a car parts store for a 'valve lifter' cap.
The tool is simply a little slot which fits over the bar at the top of the
valve core.

I tried a slime-filled inner tube myself once, wasn't that impressed.
hope you have a better experience.

Hi again John.
Have just spoke with St John's Cycles. Seemingly you cant put the sealant in
presta valve tyres. Wish they had put that bit of info on the can.

Anyone want some slime ?

Jim R

"John Hearns" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Jim Roberts said:

Hi everyone. Simple question for those in the know. How do I remove the
valve cores on our tyres. We have need to remove them to put in some
"slime". Inner tube sealant.

If you have valves with car-type valves, these are called Schrader valves.
You use a valve cap with a little tool on the end to unscrew the valve
core. I've seen them on some bike inner tubes, and on cars.
Ask in a car parts store for a 'valve lifter' cap.
The tool is simply a little slot which fits over the bar at the top of the
valve core.

I tried a slime-filled inner tube myself once, wasn't that impressed.
hope you have a better experience.

Jim Roberts said:

Have just spoke with St John's Cycles. Seemingly you cant put the
sealant in presta valve tyres. Wish they had put that bit of info on
the can.

Apparently, some people make a hole in the tube, squirt some in then patch
tube!! I don't know how wise that is.

I think some (unusual) inner tubes come with replaceable presta valve
cores, perhaps that's an option. Another is to get tubes that are
prefilled with sealant.

Personally, I think it's better just to use good tyres with normal tubes,
watch out for glass, and don't get flustered when you get the occasional
puncture -- just fix it and get on with it.

Quoted message said:

Anyone want some slime ?

No ta :-)

~PB

John Hearns said:

I tried a slime-filled inner tube myself once, wasn't that impressed.
hope you have a better experience.

I was impressed, having taken slime filled tyres on a very thorny cycle
route, shortly after hedge cutting time. The slime was green, and I
think the tubes in question came with it pre-installed. They were
presta. I expect theres variation between different makes of slime, and
different kinds of punctures. These thorns got through high quality
tyres, which probably reduced the puncture size to some extent on those
that got through.

I don't want to test the theory on my spare Presta tube, but looking
closely at the valve end, the bit that the dust cap screws to has flats
on it that look like a very small spanner or pliers would unscrew it.
Its a larger pitch thread on the very end of the valve stem.

- Richard

On Wed, 7 Jul 2004 10:57:14 +0100, in <[email hidden]>,

Pete Biggs said:

Jim Roberts said:

Have just spoke with St John's Cycles. Seemingly you cant put the
sealant in presta valve tyres. Wish they had put that bit of info on
the can.

Apparently, some people make a hole in the tube, squirt some in then patch
tube!! I don't know how wise that is.

I think some (unusual) inner tubes come with replaceable presta valve
cores, perhaps that's an option. Another is to get tubes that are
prefilled with sealant.

Personally, I think it's better just to use good tyres with normal tubes,
watch out for glass, and don't get flustered when you get the occasional
puncture -- just fix it and get on with it.

Quoted message said:

Anyone want some slime ?

I found slime to be awful stuff. Overnight it pools in the bottom of
the tube and makes handling very strange.

I agree with Pete: Use good quality stuff and ride carefuly.
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Pete Biggs:

Quoted message said:

Apparently, some people make a hole in the tube, squirt some in then patch
tube!! I don't know how wise that is.

If you still need to patch your tube, why bother with slime? 😉

d.

Richard Corfield <[email hidden]> wrote in message news:<[email hidden]>...

Quoted message said:

I don't want to test the theory on my spare Presta tube, but looking
closely at the valve end, the bit that the dust cap screws to has flats
on it that look like a very small spanner or pliers would unscrew it.
Its a larger pitch thread on the very end of the valve stem.

I have had the core of a presta valve come unscrewed a couple of times
in what sounds like the way you describe. I have always discarded the
tubes as I didn't feel confident in the valve integrity but icbw

best wishes
james

"Pete Biggs" <[email hidden]> wrote in message news:<[email hidden]>...

Quoted message said:

Apparently, some people make a hole in the tube, squirt some in then patch
tube!! I don't know how wise that is.

That should work although it's a lot of faff, especially when you
think Slime will be bought by people who don't want to be patching
tubes.

Quoted message said:

I think some (unusual) inner tubes come with replaceable presta valve
cores, perhaps that's an option. Another is to get tubes that are
prefilled with sealant.

I believe Halfords sell pre-Slimed tubes with presta valves.

--
Dave...

I can't listen to that much Wagner. I start getting the urge to
conquer Poland. — Woody Allen

In article <[email hidden]>, Jim Roberts

Quoted message said:

Have just spoke with St John's Cycles. Seemingly you cant put the
sealant in presta valve tyres. Wish they had put that bit of info
on the can.

It can be done - it's a PITA - I tried it on a wet quiet day in
January.

2 hours work is not terribly cost effective when tubes cost xxp :-((

--
A T (Sandy) Morton
on the Bicycle Island
In the Global Village
http://www.millport.net