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I am thinking about buying a CO2 tyre inflater. I have never used one before and have 3 questions:

  1. Do they have enough pressure to get a road tyre up to full pressure (~100psi)
  2. When you use a cartridge, do you have to use the entire cartridge at once?
  3. Are there any common cartridge standards? i.e. am a better off going with a particular brand because it is compatible with more brands of cartridges.. or are they all happy to mix and match?
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  1. Yes, this is no problem, though I would suggest practicing once before you have to use it on a flat. The first couple of times I used an inflator I had trouble inflating my tire fully.

  2. No, but I've found that once I start a cartridge it will leak slowly, so it doesn't last forever. In my experience it doesn't last more than a few hours, certainly not more than a day.

  3. You can buy inflators that handle both threaded and unthreaded. For example, this one -- http://www.amazon.com/gp/product/B00278XO0Q -- can take any 16g CO2 cartridge.

  • I've been able to use a partially-used CO2 cartridge months after the initial use. If yours are losing air, it's due to a faulty nozzle. – Stephen Touset Jun 17 '11 at 15:29
  • I never realized that. Thanks for the tip! – jaustin Jun 18 '11 at 0:43
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  1. Yes.
  2. No.
  3. Threaded and unthreaded.

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