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Pump recommendations: jersey pocket-sized for tubeless set-up

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  • August 2, 2019 at 10:02 am #29977
    SamShaw

    I’ve just (today!) gone tubeless on my road bike with 25mm Schwalbe Pro One tyres. They’re on, holidng pressure, no problems so far.

    Part of my reasoning to go tubeless was to cut down on the amount of ‘stuff’ in my jersey pockets when out riding. Having done a bit of research, the recommendation seems to be to carry a plug repair kit (the worms / anchovies) and a mini-pump rather than the usual CO2. CO2 supposedly not as good for re-inflation if you need to plug a hole and get the tyre back up to pressure.

    Questions:

    1.    Do those riding tubeless agree with the CO2 issues mentioned above.
    2.    Anyone got small mini pump recommendations (to go in a jersey pocket).

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  • August 2, 2019 at 12:10 pm #947425
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    Joe Totale

    I carry CO2 with me just in

    I carry CO2 with me just in case the tyre unseats itself as a hand pump will never reseat it. 

    I also take a hand pump to reinflate the tyre as CO2 can force the sealant out of the hole that it’s just plugged up. I use this tiny little thing which does work well despite it’s size:

    https://www.giant-bicycles.com/gb/giant-control-mini-pro-pocket

    I’ve given up taking a tube with me now as I’ve been able to carry out repairs with tyre worms which took far less time than changing a tube. This means I don’t need a saddle bag and carry less than when I used tubes, I must say this has been quite liberating. 

    August 2, 2019 at 11:33 am #947423
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    il sole

    hi there, i’ve used CO2 for a

    hi there, i’ve used CO2 for a couple of years with tubeless and it’s been fine. 

    BUT, i must admit, I tend to put a tube in when the hole’s too big to seal…the plug things are fine, but can sometimes be a right PITA!!

    August 2, 2019 at 11:24 am #947421
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    hawkinspeter

    I’ve heard about issues with

    I’ve heard about issues with CO₂ causing the sealant to polymerise (i.e. set into little rubber balls) and from what I can tell it looks like it’s a problem with the cold temperature of the CO₂ as it expands. To minimise the issue, put the valve at the top of the wheel so that the sealant pools at the bottom and hopefully the CO₂ isn’t as cold when it reaches the sealant.

    I’ve had issues with CO₂ when I’ve had a large cut and the sealant takes a while to seal or doesn’t fully seal, so I always like to have a mini pump as a backup.

    I’ve got the iPump Twist which is stupidly expensive and light: https://ipump.jp/#iPumpTwistClass

    What I like about it is that you have a tube connecting the pump body to the valve, so you’re less likely to break the valve whilst pumping (I wish more mini-pumps had that kind of thing) and I was intrigued by the over-the-top carbon-fibreness of it.

    If you’re in the mood to “waste” lots of money, then I can recommend the Dynaplug Racer tubeless kit – works really well and is in a conveniently small package: https://www.amazon.co.uk/dp/B07MH9K4NR

    You can get other tubeless kits for less money and as far as I know they all work in more or less the same way.

    Personally, I carry a spare inner tube as well for those times when your tyre gets a bigger (>5mm) cut in it and won’t seal. However, that does mean that you end up carrying the same amount of stuff.

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