Schrader to presta?
 

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[Closed] Schrader to presta?

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Got a compressor for my car, it's schrader valved, metal sealed unit. Is there a bodge way of converting it to use on presta valves for going tubeless?


 
Posted : 16/11/2015 9:09 pm
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oh, hang on - do you mean an electric car tyre "pump" ? May well not shift enough air for tubeless seating


 
Posted : 16/11/2015 9:20 pm
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Yep. Thread ends.

Edit - that was to HS first point but the second point s also valid. Ho hum.


 
Posted : 16/11/2015 9:20 pm
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Got one of those adaptors but it doesn't work?


 
Posted : 16/11/2015 9:32 pm
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Is it a proper compressor or an electric pump type? Does it have a nice big cylinder?


 
Posted : 17/11/2015 12:48 am
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Just another example of how crap it is we've been lumbered with shitty presta for tubeless


 
Posted : 17/11/2015 7:23 am
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So please explain how you'd get better flow with a Schrader valve ?
Remove the core from a presta and you have no restriction.


 
Posted : 17/11/2015 7:33 am
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Just drill a slightly bigger hole in the rim and fit a Schrader tubeless valve (plenty available). The difference in hole size is tiny but you get a significantly larger orifice to force air through into your Tyre.


 
Posted : 17/11/2015 8:23 am
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So please explain how you'd get better flow with a Schrader valve ?

Bigger valve, bigger hole.

But then I've never had problem with Presta for tubeless, just remove the valve core.


 
Posted : 17/11/2015 8:28 am
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If you removed the core from a scrader then I'd agree but you can't from most scrader inner tubes.
Or at least the ones I've seen.

Then again, I've never had a problem with presta with the valve cores intact.


 
Posted : 17/11/2015 8:36 am
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Schrader tubeless valves have removable cores


 
Posted : 17/11/2015 9:48 am
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If you removed the core from a scrader then I'd agree but you can't from most scrader inner tubes.
Or at least the ones I've seen.
I can't remember ever having a schrader valve (tube or tubeless) with a fixed core


 
Posted : 17/11/2015 10:27 am
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Every Presta tube / valve comes with an adapter in the packet..

Just use the Presta cap 😉


 
Posted : 17/11/2015 10:44 am
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If it's a car tyre inflator, it's not much use for tubeless anyway, they don't push enough air.

on and on - Member

If you removed the core from a scrader then I'd agree but you can't from most scrader inner tubes.
Or at least the ones I've seen.

Sure you can. They unthread internally but you need a wee pokey tool.


 
Posted : 17/11/2015 10:46 am
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Posted : 17/11/2015 10:46 am
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all a bit academic for the OP if it's just one of those 12v 'pump your tyres up if you leave it for 20 minutes' jobs - you tend to need a reservoir of air to get tubeless to seat, not continuous low rate flow.


 
Posted : 17/11/2015 10:48 am
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Yeah - what you really need is a lemonade bottle!!!


 
Posted : 17/11/2015 12:59 pm

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