Hi, I am about to start my first BIAB brew and have entered al the relevant info including the info unique to my equipment.
I am looking at the TWN - 35.61 litres and the SWN - 33.33 litres and I am a little confused by these two figures. Which figure do I use for my starting water volume? I am using water out of the tap which is at 24 degrees celcius.
Second less important question I have is do does one populate the checklist? Do I need to copy and paste or is there a macro that will populate a checklist I can print for brew day?
Any help would be appreciated.
Post #2 made 13 years ago
Hi Dadoffrosty = TWN is usually your total at ambient temps, SWN is the same "weight" of water but at strike temp (so basically warm/hot as opposed to room temp).
I don't know if you have a typo, but my TWN is normally lower than my SWN?
I can't really help with your checklist, as I have never used it, but it looks like a section that you manually fill.
I don't know if you have a typo, but my TWN is normally lower than my SWN?
I can't really help with your checklist, as I have never used it, but it looks like a section that you manually fill.
G B
I spent lots of money on booze, birds and fast cars. The rest I squandered
I've stopped drinking, but only when I'm asleep
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I spent lots of money on booze, birds and fast cars. The rest I squandered
I've stopped drinking, but only when I'm asleep
I ONCE gave up women and alcohol - it was the worst 20 minutes of my life
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Post #3 made 13 years ago
TWN is Total water needed when cold/unheated.
SWN is what the volume of the water would be at strike temperature including expansion due to heating.
As your SWN is lower than your TWN I'm guessing that you have some water held back in section "w"
Yeasty
SWN is what the volume of the water would be at strike temperature including expansion due to heating.
As your SWN is lower than your TWN I'm guessing that you have some water held back in section "w"
Yeasty
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Post #4 made 13 years ago
Thanks for the quick reply Mally. No it is not a typo. I just discovered that I had entered the kettle volume adjustment for the curved bottom in the wrong field. Pays to check twice & brew once 
. I had put it into water added to fermentor field in error. It now shows the SWN as 36.21 which makes more sense and aligns with your comments. Thanks again for your guidance. I went ahead and used the TWN volume and it is mashing now as I type. 
. I had put it into water added to fermentor field in error. It now shows the SWN as 36.21 which makes more sense and aligns with your comments. Thanks again for your guidance. I went ahead and used the TWN volume and it is mashing now as I type. -
- From Australia
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Post #5 made 13 years ago
Thanks Yeasty. Yes you are right. Thanks for the quick reply. I am underway.Yeasty wrote:TWN is Total water needed when cold/unheated.
SWN is what the volume of the water would be at strike temperature including expansion due to heating.
As your SWN is lower than your TWN I'm guessing that you have some water held back in section "w"
Yeasty
Last edited by Dadoffrosty on 23 Mar 2013, 07:33, edited 2 times in total.
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- From Australia
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Post #6 made 13 years ago
Exciting! reading that I felt that I was there with you mashing. Hope it goes well. Have fun! I expect it will be great! What are you brewing up? will you report back here and let us know how it tastes later?Dadoffrosty wrote: I went ahead and used the TWN volume and it is mashing now as I type.
Last edited by GuingesRock on 23 Mar 2013, 07:42, edited 2 times in total.
Guinges
Post #7 made 13 years ago
Thanks Guinges. Well it's in the fermenter now. It's an Amaerican Pale Ale of sorts- roughly based on a Sierra Nevada Clone recipe. I used this recipe as a starting point and varied it a bit with the hops and left out the maltodextrin that the recipe called for. My OG into the fermenter is only 1.036 which is a bit less than I expected. I think the figures would probably be a bit less for not using the maltodextrin - 113 grams- in a 23 litre into the fermenter final volume and I also was delayed in getting the brew under way by 2 weeks. So the cracked grain was sitting in sealed plastic bags for this time. As this is my first all grain brew I am not sure what effect such a delay might have on the grain. I am aware that you are supposed to use it soon after cracking. The recipe said OG should be in the range of 1.057 to 1.059. I mashed for 90 minutes, 30 mins at 50 degrees C and 60 mins at 65.5, as per the recipe. Not sure if there is something else that may have affected the OG. 
Any comments or suggestions would be appreciated.
Any comments or suggestions would be appreciated.-
- From Australia
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Post #8 made 13 years ago
Hi Dado'
The Maltodextrin is only 16% fermentable so although it would add to your OG it is added for mouth feel rather than alcohol. I don't think 113g in 23L is going to add more than a point or 2.
I'm guessing that your low OG is down to a water volume error going from your previous posts.
Why not post the Biabacus file Here so we can see your numbers.
Yeasty
The Maltodextrin is only 16% fermentable so although it would add to your OG it is added for mouth feel rather than alcohol. I don't think 113g in 23L is going to add more than a point or 2.
I'm guessing that your low OG is down to a water volume error going from your previous posts.
Why not post the Biabacus file Here so we can see your numbers.
Yeasty
Last edited by Yeasty on 23 Mar 2013, 16:05, edited 2 times in total.
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Post #9 made 13 years ago
TWN also includes your MAXI water adjustments.
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