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Old 10-14-2009, 09:30 AM   #1
a.k.a Dos Equis
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Co2 cartridges?? Anyone?? Bueller??


Has anyone used Co2 cartridges to inflate a motorcycle tire??

How many do you need for the rear tire at 36PSI???

Thank you very much.
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Old 10-14-2009, 09:39 AM   #2
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that would be 1 big co2 cart. lol or alot of little one's.....

used to use those when racing bicycle's.
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Old 10-14-2009, 11:33 AM   #3
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It would depend on the size of tire, but no more than two I would suspect.

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Old 10-14-2009, 12:19 PM   #4
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Originally Posted by gunshotwound View Post
It would depend on the size of tire, but no more than two I would suspect.
What if you need to air the tire up first to see where the flat is, then you are F'ed.
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Old 10-14-2009, 09:21 PM   #5
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I keep some in my tool kit when I go dirt bike or dual sport riding in Colorado. One cartridge will not air up a street tire but will put enough in a dirt tire (8PSI) to get back to camp. I now carry 4 or 5. They are cheap and I like the "insurance". For a street ride I would carry at least 3 cartridges if I wanted to get up to full pressure.
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Old 10-14-2009, 10:55 PM   #6
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I just did a little internet research and with quick rounding off of figures, I calculated that it would take 3 cartridges (12gm) to get 12 PSIG in my 120-17 front tire!!!! That didn't seem right since I usually only take 4 cartridges on a street touring ride. To the bike and let out all the air!! 3 cartridges later, I have nearly 11 PSIG. I can't find any more of my cartridges. I know that I have at least 5 more but they are hiding.

A quick call to a bicycle racing friend. He says a 16gm cartridge will not get a mountain bike tube up to pressure 45-50 PSIG but will allow you to ride. My cartridges are 12gm. but I know the ones that I cannot find are 16gm. Using the same calculations that I used for my motorcycle tire, 1 (16gm)cartridge should get a 26" mountain bike tire up to around 24 PSIG. Bike racing friend says that sounds about right.

My conclusion:I'm going to take at least 8 (16gm) cartridges on my next street bike trip to NM or CO. Rear tire holds at least 2 times as much air as the front.

Last edited by humanrace911; 10-14-2009 at 10:59 PM.
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