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Pumps removing valve cores

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  • June 26, 2019 at 11:24 am #29797
    kil0ran

    I’ve got a Hoy mini-pump (very similar to the always well-reviewed Lezyne Road Drive) and it has a tendency to unscrew the valve core on removal. User error? Bloody frustrating at the side of the road, typically because you’ll knacker the core removing it from the pump head, resulting in the Walk of Shame and a binned replacement tube. What am I doing wrong? For tubes without removable cores I’ve also had it bend the valve core.

    Tempted to go with a full-size frame pump to replace it – welcome recommendations on that. I’m running 25mm tyres and will need to get them to 100psi as I’m a heavy rider.

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  • June 27, 2019 at 12:24 pm #944821
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    Team EPO

    Glad it isn’t jsut me being a

    Glad it isn’t just me being a noob.  have found locktite threadlock stuff really helps

    June 27, 2019 at 11:29 am #944819
    0
    workhard
    kil0ran wrote:
    Any recommendations for similar quality tubes without removable cores? 

    i’ve gone down the “a tube is a tube is a tube” route. But there’s probably a rule about that which I’m now breaking.

    Decathlon ones are very round. Evans own brand smell like rancid kippers. Schwalbe is hard to spill correctly.

    June 27, 2019 at 8:23 am #944817
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    CygnusX1

    Glad its not just me! I also

    Glad its not just me! I also run Conti inners (although I may look elsewhere after reading this thread) and have a Lezyne mini pump.

    That sinking feeling as you realise the valve core is coming out with the pump hose after  furiously pumping away  for several minutes inflating a tyer at the side of the road (invariably in rain/sleet/biting winds) is horrible.

    June 27, 2019 at 6:20 am #944815
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    Anonymous

    Screw on type pumps with
    Screw on type pumps with removable cores are a recipe for disaster, clamp on type pumps with a hose are much better such as the morph range form topeak.

    June 26, 2019 at 5:19 pm #944813
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    kookenhaken

    Lezyne pumps and Conti tubes,

    Lezyne pumps and Conti tubes, yes, a horrible combination.

    I ditched the Lezyne pump when the handle came off at a time when I really really didn’t need that sort of equipment failure.  Bought a Topeak Race Rocket as a replacement and was pleasently surprised by the valve tool included, neatly tucked away in one end.  It’s better and it has no rubber seals that come off in use like the lezyne had.

    June 26, 2019 at 4:52 pm #944811
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    ibr17xvii

    I hated the Conti inner tubes

    I hated the Conti inner tubes for this exact reason.

    Now use these:

    https://www.wiggle.co.uk/michelin-air-stop-road-inner-tube/

    June 26, 2019 at 4:29 pm #944809
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    kil0ran

    Any recommendations for

    Any recommendations for similar quality tubes without removable cores? 

    June 26, 2019 at 3:53 pm #944807
    0
    workhard

    Regular problem with Conti

    Regular problem with Conti removable core tubes and Lezyne style screw on pumps. Plus some screw-on CO2 adapters.  I put threadlock on the cores of my own Conti tubes, and decline to offer roadside assistance to owners of tubes with removable cores. Even nipping the core up with a tool didn’t prevent one core coming out this year.

    June 26, 2019 at 2:58 pm #944805
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    kil0ran

    Thx Capt Caveman & EG3FTP1 –

    Thx Capt Caveman & EG3FTP1 – typically enough I have both of those tools… 

    …in the panniers of my other bike #facepalm – mainly because I ride that off road a lot and you’re likely to encounter people with Schrader-specific pumps.

    Must order a set for the road bike – will be cheaper than a new pump

    June 26, 2019 at 2:36 pm #944803
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    Eg3ftp1

    By which I mean one of these
    By which I mean one of these:
    https://www.wiggle.co.uk/lifeline-valve-core-remover/

    June 26, 2019 at 2:33 pm #944801
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    Eg3ftp1

    You just need to carry the
    You just need to carry the tiny valve core tightening/replacement tool with you, and use that to give the valve core a good tighten before you screw your pump on. Then it’ll stay put when you unscrew your pump after inflation.

    June 26, 2019 at 2:12 pm #944799
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    Capt Caveman

    Solved my Lezyne unscrewing

    Solved my Lezyne unscrewing the valve core by carrying a £1.99 valve adapter and screwing that onto the inner tube first.

    June 26, 2019 at 1:51 pm #944797
    0
    Shades

    Just had exactly the same

    Just had exactly the same problem with a brand new Conti inner tube last weekend using a Lezeyne Pressure Drive pump (with screw on tube).  The core thread had 2 flats on it so I held that in my teeth and got it as tight as possible (was able to screw it back in – inner tube removed from tyre at this point).  After inflating the tyre I slowly unscrewed the pump tube whilst pulling it away from the rim to avoid the issue of unscrewing the core as well.

    Interestingly I could only get 70ish psi with the Lezyne pump which, when not connected to anything, has a lot of ‘resistance’ due to the rubber connecting hose.  Have bought a simple Topeak Pocket Rocket pump which you have to hold onto the rim with your hand (ie no rubber tube); almost got to 100psi with it so much better than the fancy Lezyne pump.  My LBS had good advice so happy to pay more than the interweb for a new pump.

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