Threading CO2 Cartridges

Hmm... I doubt if there would be enough metal to cut threads. Maybe there is some kind of
adapter available for a few bucks? It might even cost less than the die if you don't have a set
of dies already.

Anyway, if you try this, might I suggest experimenting on EMPTY cartridges.

"Paul Kopit" <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

The idea of threading non threaded, 12g, CO2 cartridges came to me the other day and I wanted to
experiment. Before buying the die, I thought to ask if anyone has done this before and what their
experience has been.

What is the die size? Is there enought metal on the CO2 cartridges? How do you hold the cartridge
in place while turning the die?

Just use the ultraflate, which accepts non-threaded cartridges.

--
--------------------------
Andre Charlebois BPE, MCSE4.0, CNA, A+ webmaster for Triathlon New Brunswick www.TriNB.com "Paul
Kopit" <[email hidden]> wrote in message "]news:[email hidden]...

Quoted message said:

The idea of threading non threaded, 12g, CO2 cartridges came to me the other day and I wanted to
experiment. Before buying the die, I thought to ask if anyone has done this before and what their
experience has been.

What is the die size? Is there enought metal on the CO2 cartridges? How do you hold the cartridge
in place while turning the die?

"Paul Kopit" <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

The idea of threading non threaded, 12g, CO2 cartridges came to me the other day and I wanted to
experiment. Before buying the die, I thought to ask if anyone has done this before and what their
experience has been.

What is the die size? Is there enought metal on the CO2 cartridges? How do you hold the cartridge
in place while turning the die?

Hope you don't change your name from "Kopit" to "Kaput!"

KaBoom Bill

(empty cartridge suggestion a good one 🙂

Paul Kopit said:

What is the die size?

Bring a threaded one and a threaded receiver to a hardware store or a Home Depot / Lowes to find
out. You may also be able to search the web.

Quoted message said:

Is there enought metal on the CO2 cartridges?

I suspect that the outside diameter at the mouth of a non-threaded is smaller than the diameter at
the bottom of the threads of a threaded one. This would mean that the cartridge would fall right in
to a proper die.

This is a guess based on the fact that my inflator can take both types. I've never bought anything
other than Big Air threaded cartridges.

Quoted message said:

How do you hold the cartridge in place while turning the die?

Put the die in a vise, and turn the cartridge. Or even put the cartridge in a vise.
--
Rick Onanian

Andre said:

Just use the ultraflate, which accepts non-threaded cartridges.

I already have all the inflators. The screw in cartridge with the small adapter is really smaller
and simpler.

In article said:

Paul Kopit said:

Is there enought metal on the CO2 cartridges?

I suspect that the outside diameter at the mouth of a non-threaded is smaller than the diameter at
the bottom of the threads of a threaded one. This would mean that the cartridge would fall right in
to a proper die.

This is a guess based on the fact that my inflator can take both types. I've never bought anything
other than Big Air threaded cartridges.

Yeah I use unthreaded cartridges with my (threaded) ultraflate, so threading the smooth ones can't
possibly work unless you have some kind of adapter to step the size up.

Paul Kopit <[email hidden]> wrote in message
news:<[email hidden]>...

Quoted message said:

Andre said:

Just use the ultraflate, which accepts non-threaded cartridges.

I already have all the inflators. The screw in cartridge with the small adapter is really smaller
and simpler.

I don't know how it would be simpler exactly. The only reason it would be smaller is becuase you
can't store the CO2 cartriges in the inflator. However, there is a much better workaround for that
than trying to cut threads on the cartriges. All you do is ream out a hole in the bottom of the
inflator large enough for the tip of the C02 to stick out. This allows you to store cartriges in the
inflator upside-down. That would be alot easier, and a one-time fix IMO.

-FlatLander

Quoted post said:

Originally posted by Flatlander
Paul Kopit <[email hidden]> wrote in message
news:<[email hidden]>...

Quoted message said:

Andre said:

Just use the ultraflate, which accepts non-threaded cartridges.

I already have all the inflators. The screw in cartridge with the small adapter is really smaller
and simpler.

I don't know how it would be simpler exactly. The only reason it would be smaller is becuase you
can't store the CO2 cartriges in the inflator. However, there is a much better workaround for that
than trying to cut threads on the cartriges. All you do is ream out a hole in the bottom of the
inflator large enough for the tip of the C02 to stick out. This allows you to store cartriges in the
inflator upside-down. That would be alot easier, and a one-time fix IMO.

-FlatLander

Not all inflators have storage capability.

http://www.innovationsaz.com/INmain.asp?Option=Detail&ID=25&Category=moto&SubCategory=power

Forgive me for asking, but If you are willing to go out and BUY a die to thread the cartridges, why
not just take that money and buy a inflator that takes non-threaded CO2?

In my life time is money, the time it took you to post this question, and the time it will take to
find the proper die then the time you will spend threading (if it will even work) would more would
much more to me than $10 for a new inflator.

But if you cant find the die, you might considder going out and learning blacksmithing, then build
your own forge, mine a little ore, and knock out your own custom die, hell, even thing about making
one for me.

By the way, are you the same guy tht was posting in Alt.Rec.Dairy on care and upkeep of a cow
because you need cream for your coffee in the morning

Bill

"Paul Kopit" <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

The idea of threading non threaded, 12g, CO2 cartridges came to me the other day and I wanted to
experiment. Before buying the die, I thought to ask if anyone has done this before and what their
experience has been.

What is the die size? Is there enought metal on the CO2 cartridges? How do you hold the cartridge
in place while turning the die?

DiabloScott said:

Quoted message said:

Quoted message said:

>Just use the ultraflate, which accepts non-threaded cartridges.

I already have all the inflators. The screw in cartridge with the small adapter is really
smaller and simpler.

I don't know how it would be simpler exactly. The only reason it would be smaller is becuase you
can't store the CO2 cartriges in the

inflator.

Quoted message said:

However, there is a much better workaround for that than trying to cut threads on the cartriges.
All you do is ream out a hole in the bottom

of

Quoted message said:

the inflator large enough for the tip of the C02 to stick out. This allows you to store
cartriges in the inflator upside-down. That would

be

Quoted message said:

alot easier, and a one-time fix IMO. -FlatLander

Not all inflators have storage capability.

innovationsaz.comINmain.aspOpen ↗ to&SubCategory=power

I think you didn't read the previous messages...the purported need for storage was regarding
threadless cartridges. The link above uses threaded cartridges, rendering this whole message thread
not applicable.

With threaded cartridges, there would be no need to store cartridges in the cartridge-holder.

--
Rick Onanian

In article said:

The idea of threading non threaded, 12g, CO2 cartridges came to me the other day and I wanted to
experiment. Before buying the die, I thought to ask if anyone has done this before and what their
experience has been.

What is the die size? Is there enought metal on the CO2 cartridges? How do you hold the cartridge
in place while turning the die?

You might want to consider that the cartridge might blow up in your face because, in threading the
cartridge you have reduced the wall thickness an unsafe amount. I am speculating here about the wall
thickness, but performing a machining (threading) operation on a pressurized cylinder in and of
itself is unsafe. It's not worth the risk.

Quoted message said:

In my life time is money, the time it took you to post this question, and the time it will take to
find the proper die then the time you will spend threading (if it will even work) would more would
much more to me than $10 for a new inflator.

that depends, maybe he works for you and is doing it all at work for free???

luvjava said:

Forgive me for asking, but If you are willing to go out and BUY a die to thread the cartridges, why
not just take that money and buy a inflator that takes non-threaded CO2?

I already have 3 inflators for unthreaded cartridges. I also have a 1" tube of metal that screws
onto the valve and then the cartridge screws in and the tire is inflated. It is a simpler and
better system.

spam-<< Bring a threaded one and a threaded receiver to a hardware store or a Home Depot / Lowes to
find out. You may also be able to search the web. >><BR><BR>

Or a frame pump???

Peter Chisholm Vecchio's Bicicletteria 1833 Pearl St. Boulder, CO, 80302
(303)440-3535 vecchios.comvecchios.comOpen ↗ "Ruote convenzionali costruite eccezionalmente bene"

Tell the idiots to shut up. You can do it. First find the right die size and get the corresponding tap. Take Zefal's or Superflate's or whatever company's threaded model to Home Depot to measure the threads. If they can't help you go to the Yellow Pages and look up some machinists in your area. They shoud be able to measure the thread size if they are competent. Then just buy the tap.

You want to test it on some empty cartridges first. And once you've got that down, don't worry about it blowing up in your face as has been suggested here. The worst that could happen is that if when you make your threads, if the thread is too deep then the cartridge would be punctured and the air released and you're out one cartridge. Puncturing the cartridge is the same mechanism by which you inflate your tire using a CO2 cartridge anyway.

So, don't listen to the haters.

BaCardi said:

Tell the idiots to shut up. You can do it. First find the right die size and get the corresponding
tap. Take Zefal's or Superflate's or whatever company's threaded model to Home Depot to measure
the threads. If they can't help you go to the Yellow Pages and look up some machinists in your
area. They shoud be able to measure the thread size if they are competent. Then just buy the tap.

You want to test it on some empty cartridges first. And once you've got that down, don't worry
about it blowing up in your face as has been suggested here. The worst that could happen is that
if when you make your threads, if the thread is too deep then the cartridge would be punctured and
the air released and you're out one cartridge. Puncturing the cartridge is the same mechanism by
which you inflate your tire using a CO2 cartridge anyway.

So, don't listen to the haters.

--

Quoted message said:

--------------------------<

Posted via cyclingforums.com cyclingforums.comcyclingforums.comOpen ↗

The threads are larger diameter than the end of the unthreaded CO2 cartridges. This rules out
cutting threads (with a die, not a tap) into the end of the unthreaded cartridges. Look at an
UltraFlate, for example, which handles both types of cartridges, and you'll see the unthreaded
cartridge end fits inside the female threads with considerable clearance.

But don't listen to us hateful idiots.

Dave Lehnen

(Qui si parla Campagnolo) said:

Or a frame pump???

I have a frame pump on each bicycle. A Zefal HPX. CO2 is pretty great when it is 100+ degrees
out there.

Quoted post said:

Originally posted by Dave Lehnen
The threads are larger diameter than the end of the unthreaded CO2 cartridges. This rules out
cutting threads (with a die, not a tap) into the end of the unthreaded cartridges. Look at an
UltraFlate, for example, which handles both types of cartridges, and you'll see the unthreaded
cartridge end fits inside the female threads with considerable clearance.

But don't listen to us hateful idiots.

Dave Lehnen

So then all you gotta do is have a local machine shop machine your own chuck (instead of buying one) and screw that onto a cartridge that you've threaded. Ahh, that ought to pipe down those hateful idiots. :p