cannot find tubes with the right combination of features

[ceolwulf]

I had thought this would be a simple thing but the more I search the more it seems completely unreasonable :help:

Doesn't help that manufacturers' sites seldom bother putting complete information for the lowly inner tube.

1. unthreaded stem, that is
2. 50-60mm long, and has a
3. removable valve core (so I can put Stan's in it)
4. to fit 700x25.

Seems like I can get any three of those but not all four. (except maybe in a latex tube, which I have firmly proven to be too fragile for the roads in this war zone)

Any clues?

edit: The Vittoria seem to be closest, in the 51mm valvestem, but they're 18-23. Might be my best option?

[EricEstlund]

23mm tubes work just fine in 25mm tires.

[yoshirider]

I thought we established that 700x__/23 tubes will fit in 700x25 tires? Rubber will stretch

[Ahneida Ride]

23mm tubes work just fine in 25mm tires.

I think this is true with most cases ..... but after a blow up and a flat,
I know use 25 specific tubes.

[Cicli]

I use these and have very good luck with them.
Exactly as you describe.

http://www.jensonusa.com/!2TlLVwD3iFiAWA0j!v5REg!/Continental-700C-Light-Presta-Valve-Tube?utm_source=FRGL&utm_medium=organic&gclid=CjkKEQjwzv-cBRD_oY2PouKVvMIBEiQAKuGNC1s7yTcqyNnWTMN8QGCrWuefR VAnD4pKVqqsQwguo7nw_wcB

[ceolwulf]

I use these and have very good luck with them.
Exactly as you describe.

http://www.jensonusa.com/!2TlLVwD3iFiAWA0j!v5REg!/Continental-700C-Light-Presta-Valve-Tube?utm_source=FRGL&utm_medium=organic&gclid=CjkKEQjwzv-cBRD_oY2PouKVvMIBEiQAKuGNC1s7yTcqyNnWTMN8QGCrWuefR VAnD4pKVqqsQwguo7nw_wcB

Those are threaded though?

And yeah I could use 23s but the quantity of flats I've had this year has left me a bit paranoid ... might end up doing that though if nothing else suits, especially with sealant should be no worries, should be.

[wallymann]

Those are threaded though?

correct, conti tubes have threaded stems.

curious: why does it matter? i've never had a problem with threaded stems, i just throw away the threaded nut and functionally they're identical to smooth stems from there.

[Cicli]

Those are threaded though?

And yeah I could use 23s but the quantity of flats I've had this year has left me a bit paranoid ... might end up doing that though if nothing else suits, especially with sealant should be no worries, should be.

I buy the 80mm ones and they are not threaded.

23 or 25 mm is not going to help if you are having an issue with flats. Something else is going on.

[oldpotatoe]

Those are threaded though?

And yeah I could use 23s but the quantity of flats I've had this year has left me a bit paranoid ... might end up doing that though if nothing else suits, especially with sealant should be no worries, should be.

Using a '23' tube in a 25 tire, how much thinner it is vs a '25' tube probably isn't even measurable. If anybody gets a flat with a 23 tube being used in a 25mm tire, well, it's not because it's a 23 instead of a 25.

[shovelhd]

Continental Race tubes with a 20mm Continental extender.

[ceolwulf]

Thank you gentlemen, going for the Vittorias then.

correct, conti tubes have threaded stems.

curious: why does it matter? i've never had a problem with threaded stems, i just throw away the threaded nut and functionally they're identical to smooth stems from there.

They work pretty much fine but unthreaded is so much nicer to slide a pump head onto and doesn't chew up the seal. That's the only reason really.

Continental Race tubes with a 20mm Continental extender.

That's a good plan too, will consider for next time.

[pdmtong]

They work pretty much fine but unthreaded is so much nicer to slide a pump head onto and doesn't chew up the seal. That's the only reason really.

exactly...if you have a friction head like a silca, an un-threaded valve stem plays much nicer with the rubber washer. better seal, lasts longer.

[Gummee]

I guess I'm a Neandertal then 'cause I'm running the same tubes in all my wheels. From 23c to 34c they all get the 19-26c tubes.

M

[oldpotatoe]

I guess I'm a Neandertal then 'cause I'm running the same tubes in all my wheels. From 23c to 34c they all get the 19-26c tubes.

M

Know a guy, this is no ·····e, that uses 26 inch tubes in his 29er wheels, 'cuz they weigh less'....

[FlashUNC]

It's a bladder, it stretches. I've even used 650c tubes on 700c wheels/tires without issue. You'll be fine.

[csm]

I used a 700x28c in my wife's 29x2.1 and it lasted about 3 miles before it split.


Sent from my iPad using Tapatalk HD

[DRietz]

I used a 700x28c in my wife's 29x2.1 and it lasted about 3 miles before it split.


Sent from my iPad using Tapatalk HD

Yeah, that's not the same as 23mm vs 25mm. A 2.1" tube is equivalent to a 53mm.

It's always been common knowledge in the shops I've worked at that thbes with 23 at the top of the range and 25 at the top of the range are the same.

Think about it from an economics point of view - there's no effing way a thbe manufacturer is going to make those two molds.

Plus, ever see a Specialized tube? The fact that they go from 20-28mm should be telling.

[bikinchris]

"Doesn't help that manufacturers' sites seldom bother putting complete information for the lowly inner tube."

That's because the vast majority of tubes are all made by the same Thai factory.
They order tubes, but their frankly is no guarantee that they will get exactly what they order. It will have their name on it, but that's about all.

[Gummee]

Know a guy, this is no ·····e, that uses 26 inch tubes in his 29er wheels, 'cuz they weigh less'....

I can see that. I don't get it, but I can see it.

If you can get em to work acceptably, why the heck not?!

M

[OtayBW]

correct, conti tubes have threaded stems.

curious: why does it matter? i've never had a problem with threaded stems, i just throw away the threaded nut and functionally they're identical to smooth stems from there.
I will never (voluntarily) buy a threaded stem again. Most are threaded all the way to the tip, not just near the base and I've actually had more than a couple of flats after bending the stem when trying to muscle a pump chuck off. I like the unthreaded Vittorias and have gotten very good service from them.

[Davist]

Know a guy, this is no ·····e, that uses 26 inch tubes in his 29er wheels, 'cuz they weigh less'....

The "old school" trick in bmx was to stretch a 16" tube on a 20" tire! I tried it on my "race" wheels as a kid, tube popped quickly. 23 vs 25 not an issue, I use 23 mm tubes on 28s as a matter of their availability and if I have to loan a tube on a group ride.