How to add tire sealant to 16 inch schrader tubes?

BugsBunny
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How to add tire sealant to 16 inch schrader tubes?

Postby BugsBunny » Tue Jul 24, 2018 12:48 pm

I have a 16 inch folding bike (Brompton) which is a PITA to remove the rear wheel in case of puncture.

I've read that some folks add tire sealant to give it added protection. How do I go about doing that? The tubes are the Schrader type. Do I need a special tube that allows the valve to be removed as from the looks of things, the tubes I have there now have permanent valves?

Bugs

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Thoglette
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Re: How to add tire sealant to 16 inch schrader tubes?

Postby Thoglette » Tue Jul 24, 2018 2:14 pm

Removable valve is definitely preferable but not essential. Fire up your fave search engine and youtube away
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Duck!
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Re: How to add tire sealant to 16 inch schrader tubes?

Postby Duck! » Tue Jul 24, 2018 3:28 pm

All Schraeder valves have removeable cores. Extract core, inject sealant, refit core, inflate, ride.
I had a thought, but it got run over as it crossed my mind.

BugsBunny
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Re: How to add tire sealant to 16 inch schrader tubes?

Postby BugsBunny » Tue Jul 24, 2018 5:14 pm

Duck! wrote:All Schraeder valves have removeable cores. Extract core, inject sealant, refit core, inflate, ride.


Thanks Thoglette - and Duck to the rescue! I've seen/used removable Presta valved tubes before - and added sealant to them but never knew Schrader to have removable cores. How do I remove the inner bit? Sorry, I've found by Google a tool to do this but cant figure out how I use it to remove the inner.

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Thoglette
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Re: How to add tire sealant to 16 inch schrader tubes?

Postby Thoglette » Tue Jul 24, 2018 5:37 pm

BugsBunny wrote: How do I remove the inner bit?

The valve stem is internally threaded and the valve core is threaded externally. The valve core has space/flats either side wherein you stick the tool's prongs. Then use the tool to unscrew the inner bit. A pair of really fine needle nosed pliers can work as a substitute. Once upon a time some (metal) valve caps had the tool built into them.*

Photos from wikipedia. You can see the flats on the top of the core
Image

*ooh, still available on fleabay and elsewhere
Image
Stop handing them the stick! - Dave Moulton
"People are worthy of respect, ideas are not." Peter Ellerton, UQ

BugsBunny
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Re: How to add tire sealant to 16 inch schrader tubes?

Postby BugsBunny » Wed Jul 25, 2018 1:40 pm

Thanks Thog.

Got myself a dual (presta/Schrader) valve remover last night. And whilst I was there, the shop owner highly recommended I try the Rhino Dillo tire strips to help prevent punctures as an alternative to using sealant. But that's for another thread :-)

Bugs

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Duck!
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Re: How to add tire sealant to 16 inch schrader tubes?

Postby Duck! » Wed Jul 25, 2018 2:07 pm

Sealant is still recommended. Tyres are porous and will lose air. Sealant forms a membrane on the inner surface of the tyre to improve air retention as well as plugging puncture wounds.
I had a thought, but it got run over as it crossed my mind.

BugsBunny
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Re: How to add tire sealant to 16 inch schrader tubes?

Postby BugsBunny » Wed Jul 25, 2018 8:45 pm

Duck! wrote:Sealant is still recommended. Tyres are porous and will lose air. Sealant forms a membrane on the inner surface of the tyre to improve air retention as well as plugging puncture wounds.


Thx again Duck.

Just did it. :D

Removed the Schrader valve using my new little tool and added some Caffee Latex sealant. Decided against using the rhino dillos.

Bugs.

Jmuzz
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Re: How to add tire sealant to 16 inch schrader tubes?

Postby Jmuzz » Thu Jul 26, 2018 10:33 am

You can also just keep the sealant in a bottle and wait until you do get a flat before using it as first repair attempt if it seems to be a slow pinprick. It it's an obvious huge hole or pinch slice then avoid the mess and just change tube.
It goes off (one to six months, depending on brand/type) and has to be cleaned out and topped up, in the case of a tube you can never clean out.

There may also be better tyres available with better anti puncture armour.

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Thoglette
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Re: How to add tire sealant to 16 inch schrader tubes?

Postby Thoglette » Thu Jul 26, 2018 1:07 pm

Jmuzz wrote:You can also just keep the sealant in a bottle and wait until you do get a flat before using it as first repair attempt if it seems to be a slow pinprick.

+1.
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