How long will a bottle last befor refill?

[S/G 386N]

The small 10 oz bottles, I usually go through about 3 or 4 a year, doing super gas and a lot of bracket racing, using it on the SLE, shifter, and throttle stop. Went to a 5 lb bottle. I think it was costing me $12 to fill a 10 oz bottle, and $18 in the 5 lb bottle. Went to the 5 lb about halfway through last season, and it lasted me all the way through the end of this year, with still quite a bit left in it that I will probably be able to get a few months worth of racing out of it next year as well.

[Carl Juliano]

We use a small bottle for the stop only (electric shift) and we get close to a full season, we carry a spare and always shut the bottle off after a run.

[Chris Williams]

One thing to keep in mind about filling a smaller bottle (10oz) from a bigger one (e.g. 5 or 10 lbs) is that the larger bottle will lose pressure over time. This means the smaller bottle won't get to the full desired pressure. Most people think you should have at least 500lbs of pressure in the bottle, and run the valves at 100+. A 1/2 - 3/4ths used bottle may not have that kind of pressure, even though it may well have a bunch of CO2 left.

At something like $25-35 a tank for an exchange at a welding supply store, I swap the bigger bottle every season, regardless of how much is left in it. Cheap insurance to having more than enough pressure.

[Dennismoore]

I struggled with finding someone to fill my small bottle.I was told that paint ball guys could do it and they cant, they run different fittings.Then the fire extinguisher guys, No luck. Will a Nitros Pump work? Where would a guy get the pieces to build a transfer hose? Or is there one available from somewhere? I do live way up in Northern BC Canada so we may just be out of the loop. Im not sure..hahaha

[Chris Williams]

Welding supply places:
Here's one from Airgas: http://www.airgas.com/browse/product...&recIds=191563

Beer home brewers:
Here's one place: http://kegman.net/refiller.html#5057

[mbong66]

Originally Posted by Dennismoore

I struggled with finding someone to fill my small bottle.I was told that paint ball guys could do it and they cant, they run different fittings.

The Paint ball store in my area has a adapter to fill the 10 0z bottles maybe you should talk with the manager and see if you could get an adapter to there fittings. The store that I use has about 25 to 30 racer that fill at his store and the it is under $3.00 to fill a 10oz bottle.