Just getting into triathlons and was hoping for some direction regarding spare tubes. I’m running zipp 858 nsw wheels with a continental 28mm tire tubeless. When I raced enduro mtn bikes I always carried a tube just in case. Any light weight tubes that don’t require a valve stem extension? Thanks for any advice or suggestions!!
Jeff
The plan is to ride tubeless and if you get a puncture to install a tube? Or are you asking about spare tubeless tires? GP5000 are foldable, so that works.
There are tubes with 80mm stems. AFAIK that’s the longest available. Even with 80mm stem you would need a valve extender on the zipp 858. Might as well run a 60mm valve stem with an extender because 60mm is more common. Install the valve stem ahead of time and test the seal. It’s fine as long as it fits in your flat kit.
I’m a fan of butyl for spare tubes. Latex leaks CO2 fast, and is harder to install correctly by the side of the road.
TPU would be better than butyl on all dimensions except cost.
TPU would be better than butyl on all dimensions except cost.
On average yes but it greatly depends on the specific TPU tube and tube/tire combo.
That’s for rolling resistance. Pay no attention to few grams of weight difference. We don’t constantly brake and accelerate in triathlon. Crit racing maybe it’d make a *tiny *difference.
I’m running zipp 858 nsw wheels with a continental 28mm tire tubeless.
You need a plug kit and two CO2s.
TPU would be better than butyl on all dimensions except cost.
We need someone to try out the $2 alipexpress ones and report back. 
TPU would be better than butyl on all dimensions except cost.
We need someone to try out the $2 alipexpress ones and report back.
I’d do it for the lulz. Some safe predictions: worse than butyl. Made as thin as they could possibly be made. Can spontaneously burst for little reason or no reason. Valve or valve stem are leaking. It’s a little too small or a little too big to fit on a rim properly. Smells of solvent out of the box.
The plan is to ride tubeless and if you get a puncture to install a tube? Or are you asking about spare tubeless tires? GP5000 are foldable, so that works.
There are tubes with 80mm stems. AFAIK that’s the longest available. Even with 80mm stem you would need a valve extender on the zipp 858. Might as well run a 60mm valve stem with an extender because 60mm is more common. Install the valve stem ahead of time and test the seal. It’s fine as long as it fits in your flat kit.
I’m a fan of butyl for spare tubes. Latex leaks CO2 fast, and is harder to install correctly by the side of the road.
Riding tubeless with sealant, I have gotten slices that sealant won’t plug. I have used an empty gu package to line a slice and install a tube.
You can get tubulito or ridenow TPU tubes in long extension lengths. IMO TPU is the way to go for a flat kit (I run latex tubes for training/racing). The light weight is a side benefit; the real advantage is that they pack really small. Crr for TPU tubes varies from being close to latex to almost the same as butyl…but for a spare tube it really isn’t a consideration IMO.
example (45-85mm stems available): https://www.amazon.com/RideNow-Ultralight-Bicycle-Length-Valve-45MM/dp/B0BP9Z2FC7/ref=sr_1_23?crid=1ELLPS93X9LD1&th=1
!https://m.media-amazon.com/images/I/51QmzfT9riL.AC_SL1001.jpg
You can get tubulito or ridenow TPU tubes in long extension lengths. IMO TPU is the way to go for a flat kit (I run latex tubes for training/racing). The light weight is a side benefit; the real advantage is that they pack really small. Crr for TPU tubes varies from being close to latex to almost the same as butyl…but for a spare tube it really isn’t a consideration IMO.
example (45-85mm stems available): https://www.amazon.com/RideNow-Ultralight-Bicycle-Length-Valve-45MM/dp/B0BP9Z2FC7/ref=sr_1_23?crid=1ELLPS93X9LD1&th=1
!https://m.media-amazon.com/images/I/51QmzfT9riL.AC_SL1001.jpg
I agree on the small packing size. For road and gravel I now carry a small pump. But for racing I have co2’s. I’ve seen some concern about TPU with cold co2 temps and possible fragility. Any firsthand co2 tpu experience?
Before I went tubeless I used Tubolitos for years. I never experienced any problems with using CO2 inflators with the TPU tubes.
That’s exactly what I was looking for and couldn’t find!!! Thanks!!! I also will be using c02 in the event of a flat.
I just clicked on link and they are only 85mm valve stems. Still too short for zipp 858 wheels
I just use the straw type extenders that don’t relocate the valve core. I pre-apply teflon tape to the valve threads for a good seal.
These are the Zipp ones, but cheap amazon/aliexpress/ebay ones work just as well.
The plan is to ride tubeless and if you get a puncture to install a tube? Or are you asking about spare tubeless tires? GP5000 are foldable, so that works.
There are tubes with 80mm stems. AFAIK that’s the longest available. Even with 80mm stem you would need a valve extender on the zipp 858. Might as well run a 60mm valve stem with an extender because 60mm is more common. Install the valve stem ahead of time and test the seal. It’s fine as long as it fits in your flat kit.
I’m a fan of butyl for spare tubes. Latex leaks CO2 fast, and is harder to install correctly by the side of the road.
Riding tubeless with sealant, I have gotten slices that sealant won’t plug. I have used an empty gu package to line a slice and install a tube.
Whilst it was epic muppetry on my part, one of my early tubeless rides I got a puncture with a slice big enough to need a dynaplug. That was ok, but lost some air, so at top of next hill (group ride regroup) went to top up the pressure, bike slipped from where it was leant and I bent the valve. At that point not having a spare tube/extender even with 4 CO2, dynaplugs and fibre sealant left me stuffed. I now have a tube and extender in the seat bag.
You can get tubulito or ridenow TPU tubes in long extension lengths. IMO TPU is the way to go for a flat kit (I run latex tubes for training/racing). The light weight is a side benefit; the real advantage is that they pack really small. Crr for TPU tubes varies from being close to latex to almost the same as butyl…but for a spare tube it really isn’t a consideration IMO.
example (45-85mm stems available): https://www.amazon.com/RideNow-Ultralight-Bicycle-Length-Valve-45MM/dp/B0BP9Z2FC7/ref=sr_1_23?crid=1ELLPS93X9LD1&th=1
!https://m.media-amazon.com/images/I/51QmzfT9riL.AC_SL1001.jpg
None of them answer OPs question because they’re not long enough
It’s looking like no manufacturers produce a light weight tube with a 100mm stem. Want to keep it simple and compact, was hoping a tube would fit in the frame tool storage on my Argon18 E119. I will get a tubolito with a valve extension and see if it fits ahead of the tool bag in the storage compartment.
Remember this was for a spare tube…
Yes, a valve extender adds no additional significant weight or size. In the case of revoloop you don’t even need teflon tape. And I also have good experience with co2 and TPU tubes.
It’s looking like no manufacturers produce a light weight tube with a 100mm stem. Want to keep it simple and compact, was hoping a tube would fit in the frame tool storage on my Argon18 E119. I will get a tubolito with a valve extension and see if it fits ahead of the tool bag in the storage compartment.
In case it’s too long to fit with the extender, you can always pack the extender parallel to the tube and attach it right before use.
It’s looking like no manufacturers produce a light weight tube with a 100mm stem. Want to keep it simple and compact, was hoping a tube would fit in the frame tool storage on my Argon18 E119. I will get a tubolito with a valve extension and see if it fits ahead of the tool bag in the storage compartment.
In case it’s too long to fit with the extender, you can always pack the extender parallel to the tube and attach it right before use.
I will try that! Prepare for the worst and hope for the best.