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  1. #1
    RoadBikeReview Member
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    cold burn from co2 inflator?

    Just bought a innovations air chuck sl c02 inflator, decided to test it out at home and inflated my wheel with my index finger against the c02 container. Afterwards I noticed there was a cold patch on my finger and it felt a little thicker to the touch, 7 hours later the patch is still a little tingly and its spread a bit further down my finger. Nothing serious but slightly uncomfortable and a little worrying.

    How much damage can you do to yourself with a c02 inflator without a sleeve on the container? Ive been running warm water on my finger for about 10 minutes but it doesnt seem like something serious enough to go to the emergency room for to figure out what it is. Any advice would be great.

    thanks.

  2. #2
    waterproof*
    Reputation: Creakyknees's Avatar
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    yep. don't do that.

    you're welcome.
    * posted by Creakybot 2013 all rights reserved.
    * not actually waterproof.

  3. #3
    RoadBikeReview Member
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    Sounds like you froze your finger. Don't sue, user error...



  4. #4
    Incredibly slow
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    It's called the ideal gas law, PV=nRT, same thing happens with air dusters.

  5. #5
    Old and Fixed, Moderator
    Reputation: Dave Hickey's Avatar
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    I cleaned my keyboard today with a duster.....yep...they get pretty darn cold....
    Dave Hickey/ Fort Worth

    My 3Rensho Blog: http://vintage3rensholove.blogspot.com/

  6. #6
    RoadBikeReview Member
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    Cut a piece from an old tube and slide it over the cartridge - no more frozen fingers

  7. #7
    haole from the mainland
    Reputation: jorgy's Avatar
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    Dang adiabatic cooling.

    I use a mini CO2 inflator with no cover on the cartridge. I only use it when wearing gloves, though.

  8. #8
    eRacer
    Reputation: jmlapoint's Avatar
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    All CO2's get VERY cold when discharged.
    Most have a plastic jacket to decrease the likelihood of skin irritation.
    Never touch the bare metal of a discharging CO2.
    Use a rag or full finger gloves.
    Wait for a few minutes before unscrewing/removing with bare hand.
    Been there and done that!
    John Lapoint / San Diego
    God is Great, Beer is Good, and People are Crazy!

  9. #9
    What did you say? Huh?
    Reputation: Marc's Avatar
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    Quote Originally Posted by Creakyknees
    yep. don't do that.

    HTH HTH HTH
    Fixed.
    Man. You are all stuped.
    ~RUFUSPHOTO

  10. #10
    RoadBikeReview Member
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    For inflating in the field, you don't need to carry anything extra. Just take a glove off and wrap it around the cartrige. Simple.
    It ain't rocket surgery. Buy everything on sale, pedal when you have too, coast when you can, and get home in one piece. Keep going forward - there is no reverse.

    OGWB

  11. #11
    jaded bitter joy crusher
    Reputation: Fredke's Avatar
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    Quote Originally Posted by bwana
    It's called the ideal gas law, PV=nRT, same thing happens with air dusters.
    Nothing to do with ideal gases. For ideal gases expanding without doing work, P falls as V increases and T remains constant.

    The temperature drop for CO2 cartridges is almost entirely latent heat of vaporization of the liquid CO2 in the cartridge.
    Fredke commented in your thread. You won't believe what happens next!

  12. #12
    eRacer
    Reputation: jmlapoint's Avatar
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    Quote Originally Posted by Fredke
    Nothing to do with ideal gases. For ideal gases expanding without doing work, P falls as V increases and T remains constant.

    The temperature drop for CO2 cartridges is almost entirely latent heat of vaporization of the liquid CO2 in the cartridge.
    Wow! That certainly clears that up for me.
    Boy do I feel stupid now. I was just using the thing to pump up an occasional flat.
    P's and V's and T's.
    John Lapoint / San Diego
    God is Great, Beer is Good, and People are Crazy!

  13. #13
    RoadBikeReview Member
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    ha ha ha ha ha! sometimes a bike tire is just a bike tire.

  14. #14
    RoadBikeReview Member
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    I dont use CO2. Waist of money and packaging and the tire is not always full in some cases.

  15. #15
    RoadBikeReview Member
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    no liquid CO2

    As Emily Littela once said... never mind...
    Last edited by astrobiker; 12-28-2008 at 09:00 PM.

  16. #16
    RoadBikeReview Member
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    Sublimation, anyone?

  17. #17
    rollin
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    Quote Originally Posted by Killroy
    I dont use CO2. Waist of money and packaging and the tire is not always full in some cases.
    What do you use on the road then a hand pump? I can't get a full tire with those. I use a doubled CO2, can get a full tire out of that. I agree the packaging waste sucks though.

    I'm wondering if anyone knows if the CO2 weakens the tube all, being that it discharges so cold.
    If the ride is more fly, then you must buy.


    ~Snoop Dogg

  18. #18
    your text here
    Reputation: weltyed's Avatar
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    that is one of those mistakes you only make once.

    Wait until you are trying to inflate and the chuck explodes in your hand. Not only does your entire hand, arm, and face freeze, but you have to get out the backup hand pump.
    I don't normally "do people." - Dr. Roebuck

  19. #19
    Incredibly slow
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    Quote Originally Posted by Fredke
    Nothing to do with ideal gases. For ideal gases expanding without doing work, P falls as V increases and T remains constant.

    The temperature drop for CO2 cartridges is almost entirely latent heat of vaporization of the liquid CO2 in the cartridge.
    Hmmm, the volume of the cartridge is remaining constant, and the pressure of the gas remaining in the cartridge is dropping, which would result in lower T. Of course, n is also dropping. I have to think about this.

  20. #20
    eRacer
    Reputation: jmlapoint's Avatar
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    Quote Originally Posted by mysweetride
    What do you use on the road then a hand pump? I can't get a full tire with those. I use a doubled CO2, can get a full tire out of that. I agree the packaging waste sucks though.

    I'm wondering if anyone knows if the CO2 weakens the tube all, being that it discharges so cold.
    I have never heard of using double CO2?
    I doubt that cold CO2 does any harm to butyl tubes.
    A 16gm CO2 will certainly inflate a 700x23/25 tire hard enough to finish a ride. Maybe not to 130psi, but certainly rideable and stable.
    If you need to have it higher, you can certainly top off with your Mini Pump, but I haven't had to do this except when I screw up with the CO2.
    When I get home I usually deflate to remove CO2, and inflate with Floor Pump.
    John Lapoint / San Diego
    God is Great, Beer is Good, and People are Crazy!

  21. #21
    RoadBikeReview Member
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    Quote Originally Posted by jmlapoint
    All CO2's get VERY cold when discharged.
    Most have a plastic jacket to decrease the likelihood of skin irritation.
    Never touch the bare metal of a discharging CO2.
    Use a rag or full finger gloves.
    Wait for a few minutes before unscrewing/removing with bare hand.
    Been there and done that!
    Darn, does that mean I have to stop dropping the empties down my brother's shorts to watch him dance?

  22. #22
    Fecal indicator
    Reputation: Oxtox's Avatar
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    Quote Originally Posted by Killroy
    I dont use CO2. Waist of money and packaging and the tire is not always full in some cases.
    if by 'packaging' you're referring to the steel cylinder, they're recyclable. so, no waste there.
    eff all y'all...

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