What kind of valve - and how do I remove it?

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belgiangoth
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What kind of valve - and how do I remove it?

Postby belgiangoth » 26 Jul 2019, 5:25pm

Image
I think it's a woods valve; not sure how to remove it though. The other tyre had some sort of extra extension on it which removed and allowed me to remove the sheath and therefore the valve from the wheel.
If it is a woods, can I replace it with a shraeder valve? I think they are the same size. OR can I fit some sort of adapter to be able to fit presta valves? If so which ones?

Thanks
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robgul
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Re: What kind of valve - and how do I remove it?

Postby robgul » 26 Jul 2019, 5:50pm

Makes more sense to just put another tube in with a recognisable valve that works (chances are whatever is in the pic will be a problem to attach a pump) - and FWIW it doesn't look like a Woods to me.

Rob

belgiangoth
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Re: What kind of valve - and how do I remove it?

Postby belgiangoth » 26 Jul 2019, 7:52pm

Managed to remove the valve (the sheath was wider than the hole) through judicious and precise use of Brute Force(TM). I have fitted Presta valves, because that's what I had in. Schrader is a better fit (which is why I thought it was Woods; same size as Schrader but not Schrader) but I like Presta better. I think that the jam nut (the correct term as it is the term Sheldon, may his wheels stay forever true, uses) tightened down to the rim fits in to the Schrader hole, so it should be okay (I think Brucey has advocated this in the past).
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9494arnold
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Re: What kind of valve - and how do I remove it?

Postby 9494arnold » 27 Jul 2019, 7:46am

You can get Schrader / Woods to Presta adapter ferrules. Don't know where from though!

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Re: What kind of valve - and how do I remove it?

Postby Bonefishblues » 27 Jul 2019, 7:48am

9494arnold wrote:You can get Schrader / Woods to Presta adapter ferrules. Don't know where from though!
https://www.ebay.co.uk/itm/schrader-presta-valve-hole-shim-convertor-reducer-bike-cycle-wheel-rim-/382488576788

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speedsixdave
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Re: What kind of valve - and how do I remove it?

Postby speedsixdave » 27 Jul 2019, 10:03am

belgiangoth wrote:I think that the jam nut (the correct term as it is the term Sheldon, may his wheels stay forever true, uses) tightened down to the rim fits in to the Schrader hole, so it should be okay (I think Brucey has advocated this in the past).


Yep. Some presta tubes come with 'jam nuts' that have a step in them, allowing them to fit snugly into a schraeder-sized hole. I think Schwalbe tubes have this, but would have to go to the shed to check. Like this:

jamnut.jpg


FWIW, The more time I spend ar5ing about with mini-pumps by the side of the road trying to get presta valves to pump up without pushing the plunger down or unscrewing the valve core, the more I appreciate the robustness of the Woods valve. No moving parts at the point of use! Admittedly if the little rubber tube inside perishes and you don't have a spare, you're walking home. But when the core is removed you have a nice fat hole to squirt sealant into for a tubeless tyres. Time for a Woods resurgence?!
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Mike Sales
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Re: What kind of valve - and how do I remove it?

Postby Mike Sales » 27 Jul 2019, 10:06am

speedsixdave wrote: Admittedly if the little rubber tube inside perishes and you don't have a spare, you're walking home.


Replacement Woods cores are available that do not have the rubber tube. They work in a different way which is also easier to pump.

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Re: What kind of valve - and how do I remove it?

Postby Bmblbzzz » 27 Jul 2019, 11:21am

speedsixdave wrote:FWIW, The more time I spend ar5ing about with mini-pumps by the side of the road trying to get presta valves to pump up without pushing the plunger down or unscrewing the valve core, the more I appreciate the robustness of the Woods valve. No moving parts at the point of use! Admittedly if the little rubber tube inside perishes and you don't have a spare, you're walking home. But when the core is removed you have a nice fat hole to squirt sealant into for a tubeless tyres. Time for a Woods resurgence?!

Interesting... I'm not sure what type of valves tubeless tyres actually do use. Presumably Presta but as Woods valves are Presta sized at the valve and almost-Schraeder sized at the base, they could fit... if the rims were drilled wide enough, which I don't think they are. Possibly an idea whose time will come, maybe along with the revival of 27" (630) rims and tyres for big-wheeled gravel etc?

Btw I think Conti tubes come with a jam nut - maybe Schwalbe do too - though I must confess I didn't realize that was their name or purpose.

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speedsixdave
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Re: What kind of valve - and how do I remove it?

Postby speedsixdave » 27 Jul 2019, 11:27am

Mike Sales wrote:
speedsixdave wrote: Admittedly if the little rubber tube inside perishes and you don't have a spare, you're walking home.


Replacement Woods cores are available that do not have the rubber tube. They work in a different way which is also easier to pump.



Come on then! All aboard the Woods Bus!

:D
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mjr
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Re: What kind of valve - and how do I remove it?

Postby mjr » 27 Jul 2019, 11:31am

speedsixdave wrote:
Mike Sales wrote:
speedsixdave wrote: Admittedly if the little rubber tube inside perishes and you don't have a spare, you're walking home.


Replacement Woods cores are available that do not have the rubber tube. They work in a different way which is also easier to pump.



Come on then! All aboard the Woods Bus!

:D

Woods are marvellous. I've never seen one like that in the opening post, though. Is it a Woods?
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ratherbeintobago
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Re: What kind of valve - and how do I remove it?

Postby ratherbeintobago » 27 Jul 2019, 11:55am

speedsixdave wrote:
belgiangoth wrote:I think that the jam nut (the correct term as it is the term Sheldon, may his wheels stay forever true, uses) tightened down to the rim fits in to the Schrader hole, so it should be okay (I think Brucey has advocated this in the past).


Yep. Some presta tubes come with 'jam nuts' that have a step in them, allowing them to fit snugly into a schraeder-sized hole. I think Schwalbe tubes have this, but would have to go to the shed to check.


Having just been into the shed, Schwalbe tubes do have that, which would’ve been a nice thing to realise before struggling with Mavic valve grommets on the nasty rims on #1 spawn’s bike…

belgiangoth
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Re: What kind of valve - and how do I remove it?

Postby belgiangoth » 27 Jul 2019, 11:40pm

Isn't the issue with fitting Presta in a Schrader that the tube will expand beyond the hole? In which case should the grommet not be fitted inside the tube?
... I might buy Shrader tubes for the bike going forwards, for sure not Woods.
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ratherbeintobago
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Re: What kind of valve - and how do I remove it?

Postby ratherbeintobago » 28 Jul 2019, 8:27am

belgiangoth wrote:Isn't the issue with fitting Presta in a Schrader that the tube will expand beyond the hole? In which case should the grommet not be fitted inside the tube?
... I might buy Shrader tubes for the bike going forwards, for sure not Woods.


Not sure how you’d do that; the grommets reduce the size of the drilled hole in the rim.

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Cunobelin
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Re: What kind of valve - and how do I remove it?

Postby Cunobelin » 28 Jul 2019, 10:21am

ratherbeintobago wrote:
belgiangoth wrote:Isn't the issue with fitting Presta in a Schrader that the tube will expand beyond the hole? In which case should the grommet not be fitted inside the tube?
... I might buy Shrader tubes for the bike going forwards, for sure not Woods.


Not sure how you’d do that; the grommets reduce the size of the drilled hole in the rim.

After a while you always have a spare....simply fit the spare on the valve, and then fit the valve into the hole. THe outer than acts as a "lock nut"

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mjr
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Re: What kind of valve - and how do I remove it?

Postby mjr » 28 Jul 2019, 4:42pm

Cunobelin wrote:
ratherbeintobago wrote:
belgiangoth wrote:Isn't the issue with fitting Presta in a Schrader that the tube will expand beyond the hole? In which case should the grommet not be fitted inside the tube?
... I might buy Shrader tubes for the bike going forwards, for sure not Woods.


Not sure how you’d do that; the grommets reduce the size of the drilled hole in the rim.

After a while you always have a spare....simply fit the spare on the valve, and then fit the valve into the hole. THe outer than acts as a "lock nut"

Yes but that's not "inside the tube".
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