I came up with this several years ago. Never posted it anywhere. I thought about making them and selling them on ebay, but with a wife and two kids...
...Anyways here it is...
...This mod is for those of you who camp with air (CO2, compressor, airtank, etc.). I got real sick of going camping with my Coleman stuff (lanterns and triple burner stove) and by the end of the trip, having a sore thumb from pumping so much! Call me a sissy, but I don't think we should have to work that hard when there is a simple solution.
Here's what I did:

I'll try to post up pictures later of one of the finished caps.
Nick
...Anyways here it is...
...This mod is for those of you who camp with air (CO2, compressor, airtank, etc.). I got real sick of going camping with my Coleman stuff (lanterns and triple burner stove) and by the end of the trip, having a sore thumb from pumping so much! Call me a sissy, but I don't think we should have to work that hard when there is a simple solution.

Here's what I did:
- Source a replacement cap (they are universal between the lanterns and stoves), preferably one of the older style all metal ones, from your local camping supply store.
- Source a valve that is a schrader valve on one side with a hex in the middle, and larger threading on the other side (sorry not sure of the size, but I'll check if people are interested).
- Drill a pilot hole in the center of the cap on a drill press with the appropriately sized bit (again unsure of the size I used).
- Apply pipe dope or epoxy to the valve side opposite the schrader.
- Thread into the cap.
- Put cap on empty coleman tank, apply air, and test to see if it's air tight.
- Fill with gas, install new modified cap.
- Apply air. This is the tricky part as there is no way to test pressure. I've gotten used to judging it by sound, and I've never put too much in, but I would assume this would be the main reason you can't market something like this because of the liability. So be careful, you can always add more air later.
- Light your appliance and adjust pressure as necessary.
- When your flame starts to die down, simply fill 'er up!

I'll try to post up pictures later of one of the finished caps.
Nick

