Received a Weldtite Jetvalve CO2 inflator for Xmas. Tested it and was VERY surprised that the gas continued to void when I removed inflator from valve. Thought it was duff but NO my LBS said all normal. The units are a 1 shot. It states nothing about this on the packaging. My LBS sells a 5 pack of cartridges for £8.50. ie using this device ( obviously emergency only ) costs £1.70 per shot ! Find all this a bit of a rip off I`m afraid. It should be possible to control the CO2 and get at least 2 - 3 inflations per cylinder. Anyone care to comment ?
CO2 Gas inflators
- Thread starter jimbut
- Start date
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I did not remove the cyclinder. I pressed the unit to the tyre valve which releases the gas. When I removed the unit from the tyre valve the CO2 continued to void and empty the cartridge. My LBS says this is how this unit works. I find it strange ( and expensive ).
Smokin Joe
Squire
- Location
- Bare headed cyclist, Smoker
My Co2 pump has a button to activate it and any remaining gas stays in the cylinder when you disconnect, though I have had one which was total release only.
Buy your cylinders from here -
http://www.tyreinflators.co.uk/index.php?act=viewCat&catId=6
Much cheaper than your LBS.
Buy your cylinders from here -
http://www.tyreinflators.co.uk/index.php?act=viewCat&catId=6
Much cheaper than your LBS.
The refills do cost a bit. In practice I find I use them rarely. For commuting punctures I just use my pump, since it's in my bag anyway. I generally only use the CO2 inflator when relying on my jersey pockets only (time trials or shorter training rides mostly, I take a pump if i'm going any distance). So far I've used one cartridge this year. Mine just dumps the lot into the tyre in one go, but it needs a whole one to get the tyre up to pressure anyway.
Saddle bum
Über Member
- Location
- Kent
Search the web, the CO2 bulbs to fit the pumps can be obtained at reasonable cost quite easily.
Smokin Joe
Squire
- Location
- Bare headed cyclist, Smoker
Mine was around a tenner from my LBS, make unknown. A 12 gram cartridge will get a road tyre up to a decent pressure, but that's with about 10psi froma small mini pump first as I like to get the tyre seated to make sure the tube isn't trapped before I zap it with a cartridge. 16gram are probably a better bet. Innovations do a combined hand/Co2 inflator which is probably the way to go.jimbut said:
I have always found Co2 to be reliable but I still like the security of a back-up even though I carry three cartridges. They are a boon when it is cold and wet and you want to get going quickly again.
BentMikey
Rider of Seolferwulf
- Location
- South London
Smokin Joe said:
Nice one Joe, just bought a supply thanks to your recommendation.
My inflator can keep the remaining gas in the cylinder, by screwing the cylinder in tight.
Chrisz
Über Member
- Location
- Sittingbourne
I used to use the CO2 canisters but found them too heavy when compared to a mini pump. I only carry the pump now - it's small enough to fit in a jersey pocket and doesn't weigh a great deal at all.
robgul
Legendary Member
Just a heads up - CO2 is great BUT is only a quick fix ... the gas degenerates and the tyre will soften to be un-rideable in a couple of days. It's just science!
So - just use when in a hurry, it's dark, it's raining ... or all three
Rob
PS - And yes, they are one shot - but are designed for an average tube at high-ish pressure.
So - just use when in a hurry, it's dark, it's raining ... or all three
Rob
PS - And yes, they are one shot - but are designed for an average tube at high-ish pressure.
BentMikey
Rider of Seolferwulf
- Location
- South London
Chrisz said:
3 x CO2 equals 180g. 1 x Topeak road morph is 240g.
Dave5N
Über Member
- Location
- Outside The Little Nibble
I don't understand the need for them. They're a solution to a problem that doesn't exist.
Just take a decent pump.
Just take a decent pump.
andrew_s
Legendary Member
- Location
- Gloucester
The problem exists all right.Dave5N said:
It's called idleness
