A long day?

Help Support The HomeBrew Forum:

peebee

Out of Control
Joined
Aug 15, 2013
Messages
2,258
Reaction score
1,073
Location
North Wales
Maybe I've been up too long?

Brewing today. Nothing too strenuous as it went off fine. Yeast pitched at 4pm, I was quite surprised that the airlock was active by 10pm, though rapid starts aren't without precedence. Checked again before I turned in; airlock is bubbling at about once every two seconds. Maybe I should disengage the airlock in anticipation of a very active ferment? Hadn't got dried "Nottingham" yeast down as an excitable yeast.

Hang-on. This just isn't right...
20180613_000005_WEB.jpg

Explanations please - once you've figured what I'm papping on about.
 

simon12

THBF Sponsor
THBF Sponsor
Joined
Aug 28, 2014
Messages
2,705
Reaction score
811
Location
Edenbridge Kent
Airlock activity in the wrong direction? No idea why but bet its fixed in 12 hours. Whats the valve its going into?
 

peebee

Out of Control
Joined
Aug 15, 2013
Messages
2,258
Reaction score
1,073
Location
North Wales
The valve? It's closed, but goes to a pneumatic silencer; my alternative to a "blow-off" tube (there's loads of head space in that fermenter so I don't need a "blow-off" tube - until I started using "West Yorkshire" , aka WY-1469, yeast that is).

Just as you said, it's going right way now. But then it's a new day, tiredness is not playing with my head and the fairies have left my beer alone and gone to bed. And the airlock activity is very sedate, just as I might expect from boring "Nottingham" yeast.
 

Clint

Forum jester...🏅🏆
Supporting Member
Joined
Jun 29, 2016
Messages
13,126
Reaction score
8,600
Location
North Wales
A cooling headspace in the fv producing negative pressure...try putting hot water in a milk bottle,let the bottle get hot,tip away then push the opening against your skin and hold there....as the air cools a vacuum is formed pulling your flesh into the bottle....
 

peebee

Out of Control
Joined
Aug 15, 2013
Messages
2,258
Reaction score
1,073
Location
North Wales
A cooling headspace in the fv producing negative pressure ...
Beer had already been cooled to 19C (from 24C) in the preceding hours, pitching at about 22C, and was stable. The headspace temperature wouldn't have been much different?

Perhaps though, conduction through the fermenter walls (it's stainless steel) from the area in contact with the cooling coils did cause the headspace to cool more than the beer? The cooling liquid would have been about 4C and the fermenter insulated from outside. Bit of a long shot and probably grasping at straws, but could be the beginning of an explanation? Cheers.

But I still think fairies did it.
 
Last edited:

Zephyr259

Landlord.
Joined
Jul 3, 2016
Messages
1,977
Reaction score
580
Location
Aberdeenshire
My lager did the same thing. Even once the temp seemed stable it kept switching which way the air pressure was going. Very strange, but once the yeast got going it's been fine.
 

peebee

Out of Control
Joined
Aug 15, 2013
Messages
2,258
Reaction score
1,073
Location
North Wales
Perhaps it's atmospheric...
Except, you might have noticed, atmospheric pressure is on the slippery slope. Storm "Hector" apparently, though it's tipping over trees a good bit north of here.

I'm beginning to think you don't believe in fairies?

48 hours since pitched and the airlock has been behaving itself for the last 40 of that. Probably close to FG now.
 

Latest posts

Top