Originally Posted by jim4065
Just filled one TAD brown bottle with Belgian Ale (Kit). I primed normally, then filled it to 1/2" below the bottom of the screw threads. Should I let a bit of beer out to give more room or is that about where ya'll are filling? I put the rest of the batch up in bombers so if something goes wrong with the TAD I don't lose too much beer.
I "think" you are supposed to have a bit more headspace than that. If you think about a 12 oz bottle, you have maybe an inch of space. But that's only 12 oz, not 6 liters (1.5 gallons!). How much though? Since the bottle flares out fairly fast, I'd guess it's about 2.5" or so. I know there is some limit to how little head space you should have, as it stands to reason that less space will increase pressure.
I've been wondering alot about this though. Does how much headspace make a difference in how it pours(assuming equal carbonation) Reading through this entire thread, I see one person squeezes out some of the extra space when bottling, so the conditioning fills it back up.
My experiences so far are that the amount of foam in the glass depends upon where you are in the bottle. Seems like it's fairly foamy to start with, pretty good about a 1/3 way down; at somewhere about half I add the second cartridge, and it is good again. Then it pours but not much carbonation near the end. I did some of the 3 liter bottles, and it seemed to use two cartridges for the CO2, same as in the 6 liter bottles. I tried one 6 liter with 3 inches of head space, and one with 1.5 inches of head space, and was not sure there was that much difference in the foam, but am not certain, as my temperature regulation of my mini-fridge has not been that good (and carbonation level varies with temperature).
Has anyone got a system for using TAD that gives consistent foam levels from start to finish?