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12gram co2 pumps

Old 09-23-07, 07:43 PM
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Zero_Enigma
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12gram co2 pumps

I need some help here from everyone. I tried googling for 12gm co2 bike pumps but kept getting 16gm co2 pumps and a bunch of 12gm co2's for sale. I lost my pump last night so I'm on the hunt now for something small but want something that can use what I already have.

Now I have a /lot/ of 12gm co2's here. They are the Crosman 12gm unthreaded. Something like 80 x 12gm co2's here. So co2 is not a problem. The problem is I'm looking for a co2 pump that can take untreaded/unthreaded 12gm co2's and if possible 16gm co2's as well. Unthreaded models have priority here as my stock is mainly unthreaded. I prefer a model if possible that can be controlled by bleeding air when you're coming close to the tires max labeled PSI.

Please post experiences, pros/cons of each model, a link to the model, and pictures. Thanks in advance.
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Old 09-23-07, 08:05 PM
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This will work with 12g CO2, 16g unthreaded as well as threaded cartridges.


I have this, and it will work with 12g CO2 as well. A bit better than the Ultraflate 2 as you can control the inflation level and lock it up when not in use.
I primarily use this with 16g threaded cartridges as it is a bit lighter without having to carry the bottom capsule.



Above 2 are primarily design for 16g but will work with 12g unthreaded.

If you can find a Genuine Innovation Ultraflate Original, which is primarily design for 12g unthreaded, but will not work with 16g unthreaded.


Planet Bike Airship is also designed for 12g.


Give GI a call, they might send you an old refurbished Ultraflate.
CO2 Pumps accepting 12g unthreaded only (plus threaded) are being faded out because they do not inflate to pressure high enough for road riding, and thus most companies are making 16g pumps instead.
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Old 09-24-07, 11:57 AM
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Well my plan was thinking of carrying a sub-compact Presta manual pump and pump up till I feel resistance (I have 80PSI tires and I feel starts to get hard to pump on my old compact multi-stage Raleigh pump around 30PSI) then use the compact co2 pump to top up the tire to the correct PSI. Seeing as both units will be compact and small I was thinking of gun taping both together so I have the best of both worlds in a compact setup. My old unit was ~6" in length and just the right size for the pant pocket or jersey.
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Old 09-24-07, 11:58 AM
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How are the freezing issues on the co2 pumps listed?
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Old 09-24-07, 12:02 PM
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Those pumps I listed above do not have freezing issues, you have the freezing issue if the cartridge while in use is in direct contact with your skin.
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Old 09-08-11, 11:41 PM
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Been a while since I've posted on B.F. I got a few days ago the 12gm untreaded Ultraflate. I plan on trying it out on my scheader valve bikes soon and then seeing if I can get it to work on my presta valve bike. Seeing as all free air stations here are all scheader valves I'll likely end up having to carry both pumps as presta tires tend to require extra kit.
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Old 09-18-11, 04:00 PM
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Hey, Zero_Enigma. It's been a LONG time since I've posted, too. I've graduated up to a much brighter set of lights than the old Fenix L2D's that I used to use all the time. Sorry for off topic -- just saying hello.
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Old 09-19-11, 12:39 AM
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I have the GI Ultraflate 2 and I do not even do any of the "pre-filling" before I dump the cartridge in the tube and have no problem with my tires being under-inflated. Gotta love the Crosman cartridges for 50 cents when the LBS wants $4 for their cartridges.
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