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Co2 pump - threaded or non-threaded cartridges?(15 posts)

Co2 pump - threaded or non-threaded cartridges?Matno
Apr 8, 2003 8:22 AM
I've noticed that some pumps are different. Is there a difference in pumps that use the different cartridges? Are the threaded cartridges more expensive?
re: Co2 pump - threaded or non-threaded cartridges?MR_GRUMPY
Apr 8, 2003 8:33 AM
Much more, You can buy non threaded at Wall Mart for 50 cents ea.
Innovations makes several types.....Tower
Apr 8, 2003 9:04 AM
I have the Ultraflate. It can take either threaded or non threaded cylinders. If you use the threaded type, you don't need the bulky plastic body, just the head. You'll need the plastic body if you use the threadless, as it keeps it sealed to the head and prevents it from becoming a projectile.

They offer several other types, including the Air Chuck. It uses only threaded cylinders, but you control the inflation by pressing it on the stem. Kinda like airing up car tires at a gas station. It's small too.

The other small one they offer is the Micro Flate. It uses threaded cylinders only. You control the inflation by unscrewing/screwing the cylinder into the head. Might be difficult to use because of that.


Air Chuck:

yes...threaded are way more $ColnagoFE
Apr 8, 2003 9:21 AM
the advantages are that the chuck can be lighter for the threaded as you don't need a container and that you can get the proper amount of c02 to fill a tire without 2 non-thread carts, but you can buy the non-threads at wal mart for so cheap you could use 4 for the same price as one threaded.
12g vs 16gDINOSAUR
Apr 8, 2003 9:45 AM
A 12g catridge will inflat a 700x23 tire to 96psi. A 16g will get you up to 130 psi. The downwall is the 16g (threaded cartridges) are expensive (-/+ $4.00 each). The 12g are the same type used for pellet/air/paint/guns etc and can be purchased in bulk for around $.50-$1.00 each. Bike Nashbar sells 16g non-threaded Innovations cartridges in packs of 6 for $11.99. I guess in depends on how often you have flats and much much money you want to spend. I was thinking of ordering a 6 pac of the 16g non-threaded and using one for my initial flat and the 12g for backups as I seldom have more than one flat on a ride.
Use 2 x 12s. It's still way cheaper. (nm)TFerguson
Apr 8, 2003 10:57 AM
Definitely non-threadedpmf1
Apr 8, 2003 10:01 AM
You can get them really cheaply at sporting goods stores that sell airguns (less than half what a LBS charges).

Personally, I think a 12 gram cartridge is just fine for a road tire. 16 gram is better, but the 12 gram ones get you home. Once there, you have to let all the CO2 out anyway (it leaks out of the tire rather fast).

I like CO2 pumps. They beat the hell out of a mini pump.
re: Co2 pump - threaded or non-threaded cartridges?JS Haiku Shop
Apr 8, 2003 10:16 AM
a 12g non-threaded cartridge inflated my rear tire--700x23 michelin axial kevlar--to between 90 and 100 psi. i then rode on it for about 13 hours (on bike time, longer total time) with no worries. i weigh 200# and the bike weighed ~43 pounds on that ride, most of its weight on the rear.

a 24-pack of 12g co2 cartridges can be had at wal-mart for $13.

I pack an Innovations Second Wind bought a few years ago. small, light, and can be used in a pinch to inflate a tube to low pressure (or good with MTB tubes). works with non-threaded 12g cartridges. on long rides where no assistance is available (even by phone), i'll also carry a frame pump (Topeak Master Blaster).
How many flats do you get?Spoke Wrench
Apr 8, 2003 10:56 AM
The threaded 16 gram type are more convenient to use. The 12 gram unthreaded ones cost a whole lot less but it usually takes about one and a half to get a road tire up to pressure.

I generally only have a couple of flats per year (and I only use CO2 about half the time) so I use the threaded ones. If I flatted more often, I would definitely use the less expensive unthreaded ones.
Funny you should ask...Matno
Apr 8, 2003 8:15 PM
I haven't had a SINGLE flat in over 3 years! Including both road and mountain bikes. (I know I'm condemning myself to a flat with this statement!) I guess maybe I don't ride enough... But at any rate, that's why I'm looking into getting a smaller, lighter pump, since it will probably only be used for very rare emergencies. On longer rides, I'll still take the regular pump (I have a cool one that is quite small, and totally usable even at high pressure, but it's not quite small enough to fit in my wedge pack).
I go with 16g threadedMariowannabe
Apr 8, 2003 11:53 AM
When I get a flat - maybe 1 or 2 per 1000 miles - I don't want it to mess up my day any more than than it already has. I use a 16g threaded and the simplist adapter I can find. 120+ lbs. and I'm off and running for the rest of the ride. When the sweat is dripping in my eyes and my buddies are riding in circles, I want the fastest, simplest, surest remedy that I can get. Heck, I spend more than $3 on Cytomax and powerbars every ride.

Has anyone threaded a non-threaded cartridge?Dan Q
Apr 8, 2003 1:35 PM
Has anyone purchased the appropriate die and threaded a non-threaded cartridge? Did it work?
sounds dangerous AND way too much work (nm)ColnagoFE
Apr 8, 2003 2:28 PM
You'd freeze your fingers on the uninsulated cylinder too (nm)Spoke Wrench
Apr 8, 2003 2:52 PM
Not possible.jw25
Apr 9, 2003 9:30 AM
The diameter of the unthreaded neck is smaller than the threads of the threaded - that's how you can use both with the same inflator.
Plus, threading metals under high pressure is asking for trouble.