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Tyre valve stem replacement

Started by WTSDS, December 09, 2012, 02:15:01 PM

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WTSDS

December 09, 2012, 02:15:01 PM
My 12 year old Monster has its original tyre valve stems and lately the rear tyre has been losing pressure very slowly, like 5 PSI over a week. Thinking it was just a leaky valve I replaced it but discovered the thread inside the stem was dodgy.


Putting on a new stem cap has solved the problem temporarily.

Are the ordinary rubber mushroom shaped auto stems OK as a replacement or do I need the original type with the locknut ? Of course the front wheel needs the angled variety 'coz of the twin brake rotors but the straight type seems it would be OK at the rear.

2000 Monster Dark 900 ie   Stock except for low Staintunes and a centrestand. 15:39 sprockets make for excellent highway gearing

ducpainter

#1
December 09, 2012, 02:33:33 PM
I've never seen anyone use an all rubber valve stem.

It might work.
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent."


Speeddog

#2
December 09, 2012, 05:14:34 PM
I'm pretty sure that the rubber stems need a larger hole.
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WTSDS

#3
December 09, 2012, 11:18:21 PM
Thanks guys.

I've just invested a whopping 15 cents in a new valve cap. I'll worry about getting the stem replaced after Xmas.
2000 Monster Dark 900 ie   Stock except for low Staintunes and a centrestand. 15:39 sprockets make for excellent highway gearing

floyd turbo

#4
December 10, 2012, 08:08:55 AM
Why not just replace the valve core?

Slide Panda

#6
December 10, 2012, 08:30:27 AM
Quote from: WTSDS on December 09, 2012, 02:15:01 PM
I replaced it but discovered the thread inside the stem was dodgy.

That's why...
-Throttle's on the right, so are the brakes.  Good luck.
- '00 M900S with all the farkles
- '08 KTM 690 StupidMoto
- '07 Triumph 675 Track bike.

ducpainter

#7
December 10, 2012, 08:36:28 AM
Quote from: Slide Panda on December 10, 2012, 08:30:27 AM
That's why...
Tool #1 might correct that.
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent."


floyd turbo

#8
December 10, 2012, 02:24:31 PM
Quote from: Slide Panda on December 10, 2012, 08:30:27 AM
That's why...

I really need to learn how to read more carefully

WTSDS

#9
May 30, 2014, 03:51:58 AM
Replaced the new valve stem and re-used the valve core - all is beautiful, my rear tyre is now holding it's pressure.
2000 Monster Dark 900 ie   Stock except for low Staintunes and a centrestand. 15:39 sprockets make for excellent highway gearing

oldndumb

#10
May 30, 2014, 01:12:55 PM
Hmm? By re-using the old core you saved $2.07, including tax, for a pack of four. You also avoided worrying about what to do with the three remaining ones.  [clap]

koko64

#11
May 30, 2014, 06:16:08 PM
That will hold the fort in the meantime.
It's a safety issue and they are getting long in the tooth. Odds are you'll be fine, but maybe take it as a caution from your bike. You don't want a sudden loss of pressure when you least expect it. I would buy some nice valves (in your choice of colour) from our sponsors and get them fitted next tyre change as part of periodic maintenance.
Just my conservative opinion.
2015 Scrambler 800

WTSDS

#12
June 02, 2014, 01:24:36 AM
Quote from: oldndumb on May 30, 2014, 01:12:55 PM
Hmm? By re-using the old core you saved $2.07, including tax, for a pack of four. You also avoided worrying about what to do with the three remaining ones.  [clap]

The valve which I replaced 18 months ago was from a pack of 4 I bought about 15 years ago, i.e. almost spanking new :-)

I still have to worry about the other 3 tho. There's two wheelbarrows and a quad 'bike with a trailer on my GF's property which need the tyres pumped up now and then - I expect when things get serious those nearly new valves will get put into service. I will let you know when and if I squander any more valves.
2000 Monster Dark 900 ie   Stock except for low Staintunes and a centrestand. 15:39 sprockets make for excellent highway gearing

oldndumb

#13
June 02, 2014, 05:42:20 AM
Quote from: WTSDS on June 02, 2014, 01:24:36 AM..... I will let you know when and if I squander any more valves.

My mistake. Obviously you have a plan, and to squander, at least for the short term, is not part of it. It must be in my DNA to waste money because I could never bring myself to be a cheapskate, but then I also know I'll never be rich. You, on the other hand, are on your way to financial independence.  ;D
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