Differences in BF vs BF ?

[Beer Please]

Hi all. Somewhat perplexed.

transferring a 23l batch of Deuchars IPA into a pressure barrel in a weeks time and was looking at how much priming sugar to add for secondary fermentation.

Brewers Friend calculator says add 139.2g sugar
Brew Father tools says 68.4g sugar

Why the difference? What am I missing?

 

[foxy]

Hi all. Somewhat perplexed.

transferring a 23l batch of Deuchars IPA into a pressure barrel in a weeks time and was looking at how much priming sugar to add for secondary fermentation.

Brewers Friend calculator says add 139.2g sugar
Brew Father tools says 68.4g sugar

Why the difference? What am I missing?

If you cold crash it could be the temperature of the beer.
If you have a temperature of 1 C under 100 kPa of pressure you will have 3.1 g/l of co2 in your beer. 18 C you will have 1.8 g/l. Depends how they have worked it out.

 

[Beer Please]

If you cold crash it could be the temperature of the beer.
If you have a temperature of 1 C under 100 kPa of pressure you will have 3.1 g/l of co2 in your beer. 18 C you will have 1.8 g/l. Depends how they have worked it out.

Hmmm. Okaaayyy!
I (kinda) understand that.
But if the beer is going to be 19C when I transfer, then surely the amount of sugar I quoted should surely be the same. Or at least similar.
I assume i would add sugar, get secondary going for 5 (?) days and then crash it. Intention was to add a C02 cartridge too.

 

[nickjdavis]

Is one calculator set for bottling (B'Friend) and the other (BFather) for kegging?

You need a lot less priming sugar when kegging.

 

[Beer Please]

Is one calculator set for bottling (B'Friend) and the other (BFather) for kegging?

You need a lot less priming sugar when kegging.

I think that must be it. My last brew (APA) I bottled (and bottle primed) and used the figures from Brewers Friend. The results were somewhat disappointing. Pretty flat beer Want to make sure I’m accurate this time.

 

[dmtaylor]

Brewers Friend calculator says add 139.2g sugar
Brew Father tools says 68.4g sugar

Key thing to be aware of: When you are priming in a keg, you need less than half the amount of priming sugar as compared with bottling. It's just a fact. When I calculated the amounts of priming sugar for bottling vs. kegging, I ended up with about 140g and 62g. So if you are kegging, I would say that Brew Father got it right. The higher amount is likely assuming glass bottles.

Temperature has a very small effect. I ignore it.

 

[Beer Please]

Thanks for all the replies folks