valve removal

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.

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

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

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.

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.
--
DISCLAIMER: My email box is private property.Email which
appears in my inbox is mine to do what I like with. Anything
which is sent to me (whether intended or not) may, if I so
desire, form a legal and binding contract.

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 millport.netmillport.netOpen ↗