I posted this on a 4wd camping trailer forum which I occasionally frequent but it's good info for here too.
I use corny kegs in a kegerator at home and never want to go back to bottling. I always miss having my own brews with me when I'm away but the half size kegs are so expensive and not as readily available as standard corny's so I did a bit of googling and came across this idea.
All you need:
- 5l keg
- Rubber bung for keg
- Presta valve cut from old inner tube
- Co2 bike pump
5l minikegs, presta valve, bike pump. Awesome.
I am a cyclist anyway so I have a co2 pump and often have punctured innertubes with presta valves.
I bought a couple of minikegs and bungs from this place but I am sure you can get them on the UK:
http://minikeg.net.au/
I have knocked up a great DIY delivery system that fits in an esky or fridge. I know I am not the first one to do this but here are some instructions and pics for any young players.
Take the rubber bung with the intact middle bit.
Drill a 5mm (or 5.5 - takes a bit of trial and error) and push a presta valve through the hole. I pushed it halfway through then put a bit of silicon on the base and pushed the rest through.
I should point out here that I used a threadless valve, in hindsight this was a mistake as the nut would have held the valve in place better. I know for the next time.
I bought a beer line disconnect for a corny key and attached a couple of metres of pvc hose to it.
I connect this to the out of my standard corny and let it fill the minikeg. Simples....
I should also point out that the beer is already carbonated and ready for drinking from the corny. This is just storage/serving. You can use these kegs to carb as well, but I already have a system in place for that,
Once it's full you simply put the bung in and attach a co2 bike pump to pressurise the keg, hardly any gas is needed, just enough to push the beer out.
Result
Great for camping, picnics, barbecue etc or, as I did last night, in front of a film without having to get up.