is it because of the plastic stem/Valve interface?
Yes. I think (but can't fully remember now) that there was a notice inside the box with each tube stating not to use co2 as it can damage the stem. They are a separate plastic piece, bonded to the TPU.
I believe you are not supposed to used co2 inflators with them
That’s a no from me then.
It's a cheap upgrade imo.
Better rolling resisitance, and weight savings for very little money - maybe 300g. A butyl tube is around 100g heavier; x2 for the ones in use and x1 for the one in your saddle bag.
Ah well, have taken the plunge and ordered 4x36g.
I questioned the point given I'm already on latex tubes, will be interesting to see if I notice approx 50g weight saving per wheel. Will at least offset the weight of the bigger tyres I've fitted, so my OCD is happy 😎
That’s a no from me then.
But aren't you supposed to avoid CO2 with tubeless sealants too?
Anyway this issue might be a good case for getting one of those 'CYCPLUS' electronic tyre inflators (or similar) then.
I always have a mini-pump anyway, and only really use CO2 if I'm in a bit of a hurry and/or want to blast it up to a higher pressures than my puny arms can manage.
Can't say I'd actually miss carrying Co2 TBH, just another item cluttering up my tool kit.
CO2 doesn't play well with sealant. It's also a single use product so not only not good for emergencies but bad for the environment too!
My Mrs got 4 as she doesn't want to deal with tubeless, so has non-tubeless GP5000s. They should roll very nicely compared with TPU in.
My new bike came with butyl chonkers (150g each! On a 'race' bike!). My usual tubes are 60g or so each but are usually only in my pocket as I run tubeless. Tempted to get a couple of RideNow for space saving spares.
Anyone tried TPU tubes with a sealant in? Several companies seem make a TPU compatible sealant and a brand called OVO gets good press (branded Nutrak on Freewheel).
If the sealant works then it would seem like a useful option when using handmade tyres with porous sidewalls that are a bit of a faff to seal... I'm tempted to try some TPU tubes in my Strada Pros which are waiting to be fitted but it is puncture resistance that I want...
Out of curiosity I tried some of the ride now tpu tubes on the singlespeed. The ‘gravel’ ones that are supposed to be for 700x28-47c. Absolutely fine with challlenge 36mm gravel grinders but both failed when seating the beads on 45c challenge getaways. One had 7 tiny punctures in, the other only 3. All of them along the rim bed. Both rims are tubeless taped and cleaned before I fitted the change of tyres. I can only presume from the pattern of punctures that the tpu tubes deformed slightly into the spoke holes under the tape and that was enough to cause small ruptures. I couldn’t tell any difference between tubeless and tpu.
Ordered some from AliExpress as I needed some new tubes for the road bike. Will report back in a month or so once I've tried them.
I ordered some of these:
https://www.tpubiketubes.com/products/nano-tpu-tube<br /><br />
Being shipped from Australia by the looks of it so may take a while to arrive…😂
