deep rims and valve extensions

[Ed/L152]

I bought some 35mm depth rims from ebay. I have several tubes all with 40mm valves - the valve pokes out a bit but my pumps don't fit on them.

I've been struggling on with valve extensions, but since discovered that valve extensions are generally intended to be left on the valves permanently, with plumbers PTFE tape if necessary, is this right? If so, this means I'd need to fit extensions to any spare tubes I carry with me too, but it would be a PITA to ensure the fit of the extensions is absoultely airtight before hand. Plus, most extensions are 50mm or so, much longer than what I need. Even short extensions left on permanently will look unnecessary.

Isn't there a valve extension which can be fitted quickly temporarily just when pumping up a tyre? I know tubes with longer valves exist, but options seem to be limited for latex tubes, and I've already got several tubes with 40mm valves.

Cheers.

[frisbee]

I've not used them myself but you can get valve extenders for innertubes without removable valves:

https://www.wiggle.co.uk/lifeline-valve-extensions...

[jrb43]

Sorry to say but I've never had any luck with valve extenders. Safer to buy tubes with the correct length valves. Michelin Air Comp Latex after 30s of searching. Or if you're going to use extenders, attach them properly and use a non-latex tube for your spare? If you've stopped to fix a puncture, lightweight tubes are not going to put you back in the race.

[okgo]

Topeak used to do one that was like one you put on, twiddle the valve open or shut and could take off after use.

You want something that doesn’t require you to remove the valve core. But I would just buy longer valved tubes given they’re obviously not that deep.

[anonymous-user]

Use a regular tube with a short extension. Eg these Continental 30mm ones.

https://www.amazon.co.uk/Continental-Unisexs-TUC40...

All you need to carry with you is a regular spare tube with the valve removed and a valve removal tool (weighs about 5g and is tiny). If you puncture, use the tool to swap the extension plus valve from the punctured tyre to the new one. Takes about 30s.

Edited by anonymous-user on Sunday 19th February 00:45

[outnumbered]

Just buy some tubes with 60mm valves. They’re a few quid each from Decathlon.

[Julian Scott]

outnumbered said:

Just buy some tubes with 60mm valves. They’re a few quid each from Decathlon.

This. All manufacturers do them, not more expensive in reality than shorter valves.

[IREvans]

Ed/L152 said:

I bought some 35mm depth rims from ebay. I have several tubes all with 40mm valves - the valve pokes out a bit but my pumps don't fit on them.

I've been struggling on with valve extensions, but since discovered that valve extensions are generally intended to be left on the valves permanently, with plumbers PTFE tape if necessary, is this right? If so, this means I'd need to fit extensions to any spare tubes I carry with me too, but it would be a PITA to ensure the fit of the extensions is absoultely airtight before hand. Plus, most extensions are 50mm or so, much longer than what I need. Even short extensions left on permanently will look unnecessary.

Isn't there a valve extension which can be fitted quickly temporarily just when pumping up a tyre? I know tubes with longer valves exist, but options seem to be limited for latex tubes, and I've already got several tubes with 40mm valves.

Cheers.

Just buy some inner tubes with the correct length valve.

[Parsnip]

As above, buy one of the topeak ones that you can remove - means you can borrow a tube off someone if needed, plus use whatever tubes you like.

I like the aircomp latex tubes, but they only come in 60mm max - so need an extender either way in my wheels, and as they don't use removable cores, the topeak thing is the way to go.

[Julian Scott]

Parsnip said:

As above, buy one of the topeak ones that you can remove - means you can borrow a tube off someone if needed, plus use whatever tubes you like.

I like the aircomp latex tubes, but they only come in 60mm max - so need an extender either way in my wheels, and as they don't use removable cores, the topeak thing is the way to go.

I carry an 80mm valve spare on my road bikes for that same reason, even though my road bike rims are 45, 49, 50, 54mm, but it also means I have options for others I'm riding with.

[TwistingMyMelon]

These little adapters are a godsend if you only have a little bit of valve showing :


https://www.amazon.co.uk/Presta-Schrader-Adaptor-A...

TBH I use them on all prestas as I am a heavy handed idiot

I always buy longer valved tubes but often shops have limited stock when you need them most!

[Sgt_Slow]

To all those saying "just buy the right tubes!", I hear ya, but there's times where valve extenders can save you.

If you've flatted, using your tube, and it's windy and raining, fannying about with repair kit - even the self-adhesive ones - is a pain. Plus, it's always at an inconvenient time and/or place.

Using a mates' tube that they don't need, might save you. No guarantee that they have long valves! You can help your mates out if they need a tube, but only have deeper section wheels that you.

Local bike shop may not have long enough valve stems...

Yeah, it's not an ideal, permanent solution, but they are so lightweight and take up almost no space... I carry 2, and spare valves.

[Ed/L152]

Thanks all. I've found the zipp valve extenders ( https://www.amazon.co.uk/dp/B01CRQV4ZY ) make a good enough seal to get a tyre pumped up and are small enough to carry in a saddle bag, and I'll give the presta to scrader adaptors a go too - I find the presta pump fitting frustrating at the best of times anyway.