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Discussion Starter · #1 ·
Had a flat last night and used my minimalist C02 inflator. I guess my pinky was touching the cartridge. About 30 seconds afterwards I felt pain there as if I had been burned. Woke up to a huge blister. Blurry photo below




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Discussion Starter · #4 ·
My dermatologist charges $250 for that.

Now you will always remember the Joule-Thompson effect.
Funny that you mention that. I had to take my daughter to the dermatologist this morning to get some stitches out (she had a scary birthmark removed). I asked her about the blister. She gave me two options to do on my own. It was a freebie.
 

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Discussion Starter · #6 ·
Don't do that next time.
I feel like a did a public service for the RBR community. For those of you wondering "what's the worst that can happen if I touch the cartridge?" well now you know. You are welcome
 

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Yeeesh! They do get cold indeed, even to the point of frost sometimes. But I have never had this happen or even heard of it ever happening. It's only 16g! You must have very tender skin.
 

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Have to ask, did you blow the entire cartridge in one shot or did you do short blasts?

If you do short blasts, the cartridge will get cold but not immediately below freezing like a sustained discharge will.

Good luck with your frost burn, hope it heals quickly and cleanly.

EEC
 

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That's what I'm thinking. Must've dumped the entire volume real fast.
I use a screw on inflator that regulates the speed. Slowly crack it open and it never gets that cold.
tlg,

I am, obviously, thinking along the same process. More of operator error than flawed product warning.

Dave, sorry for your injury, feel better.

EEC
 

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I use a section of an old inner tube as a sleeve cover for my CO2 cartridges so this doesn't happen.
 

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I use a section of an old inner tube as a sleeve cover for my CO2 cartridges so this doesn't happen.
That's a great idea! I bought a rubber sleeve at a bike shop that goes over the co2 cartridge. I could have saved a buck or two.


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Have to ask, did you blow the entire cartridge in one shot........

I sure hope not. That's a great way to over inflate and blow the tire. A 16g CO2 is capable of over 150 PSI in a 23c tire. :eek:

Short bursts are recommended.
 

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Discussion Starter · #14 ·
Have to ask, did you blow the entire cartridge in one shot or did you do short blasts?

If you do short blasts, the cartridge will get cold but not immediately below freezing like a sustained discharge will.

Good luck with your frost burn, hope it heals quickly and cleanly.

EEC
ExChef and tlg, you are correct. I just got this inflator recently (a GI Air Chuck) and had never used it on the road. I was having problems getting it to trigger and once I did I dumped the whole thing at once. Before that I had one of the encased kind with an actual trigger.
 

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My Red Zeppelin came with an insulated sleeve.
 

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Discussion Starter · #18 ·
My Red Zeppelin came with an insulated sleeve.
I may pick up one of those sleeves. Seems like it would reduce noise in the saddlebag too. The thing is I did not even feel any pain until after the job was done.
 

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