Coarse grind

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Re: Coarse grind

Unread postby royco » Wed Nov 19, 2014 8:00 am

I think his hovercraft is full of chickens. Jack must originate from Barneveld
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Re: Coarse grind

Unread postby Luis Coentrao » Sun Dec 14, 2014 12:18 pm

Decided and asked for a roller mill (Brewferm) for Christmas
:oops: , just didn't wait for Christmas to open it...

Experience: compare the result of conditioned malt and gap adjustment

Pitctures:
IMG_0829.JPG
conditioned barley, gap 1.2mm

IMG_0833.JPG
non-conditioned barley, gap 1.2mm

IMG_0832.JPG
conditioned barley, gap 1mm

IMG_0831.JPG
gap 1mm


What do you think?
My impression is:
1. Non-conditioned malt requires a gap around 1.2mm to get a coarse grind (as stated here in the forum)
2. Non-conditioned malt requires a gap below 1.2mm (perhaps 1mm) to get a decent coarse grind
3. Grain husks are more intact in conditioned malt

:cheers:
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Re: Coarse grind

Unread postby BrauTim » Sun Dec 14, 2014 5:43 pm

Luis Coentrao wrote:Decided and asked for a roller mill (Brewferm) for Christmas
:oops: , just didn't wait for Christmas to open it...

Experience: compare the result of conditioned malt and gap adjustment

Pitctures:
IMG_0829.JPG

IMG_0833.JPG

IMG_0832.JPG

IMG_0831.JPG


What do you think?
My impression is:
1. Non-conditioned malt requires a gap around 1.2mm to get a coarse grind (as stated here in the forum)
2. Non-conditioned malt requires a gap below 1.2mm (perhaps 1mm) to get a decent coarse grind
3. Grain husks are more intact in conditioned malt

:cheers:


These results look very similar to mine, what I do is run conditioned malt through at 1.2mm, then run it through again at 1.2mm and it seems to come out perfect.
To brew or not to brew, that would be a stupid question !
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Re: Coarse grind

Unread postby zedd » Sun Dec 14, 2014 7:30 pm

Two questions... In the last photo, you seem to have the mill set to 0.040. How is this 1mm?
Second is for BrauTim: you run the malt through the grinder twice at the same setting?
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Re: Coarse grind

Unread postby paulg » Sun Dec 14, 2014 8:06 pm

40 thou (thousands of an inch)= 1.015 mm
so I assume that the markings are thous
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Re: Coarse grind

Unread postby Luis Coentrao » Sun Dec 14, 2014 10:07 pm

paulg wrote:40 thou (thousands of an inch)= 1.015 mm
so I assume that the markings are thous


Right! I used an online conversion calculator to do the maths for me.
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Re: Coarse grind

Unread postby BrauTim » Mon Dec 15, 2014 11:06 am

zedd wrote:Two questions... In the last photo, you seem to have the mill set to 0.040. How is this 1mm?
Second is for BrauTim: you run the malt through the grinder twice at the same setting?


Yes I run it through twice at the same setting - but note that the malt is conditioned, the first time crushes the kernels but does not completely break them apart, the second crush breaks them apart but leaves the husks relatively intact, I get around 80% efficiency.

Also I go smaller for wheat because of smaller kernels and smallest is best for any roasted malts as they don't contribute much to the filter bed (if including them in the mash).

I wouldn't do this with unconditioned malt, it only needs a single run through.
To brew or not to brew, that would be a stupid question !
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Re: Coarse grind

Unread postby Luis Coentrao » Mon Dec 15, 2014 11:22 am

Hi Tim,

How much is your gap for conditioned barley and wheat?
Do you mill both twice?
:cheers:
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Re: Coarse grind

Unread postby BrauTim » Tue Dec 23, 2014 9:27 am

Luis Coentrao wrote:Hi Tim,

How much is your gap for conditioned barley and wheat?
Do you mill both twice?
:cheers:


I do 1.2mm for Barley run through twice.
Wheat is less than 1mm (0.8-1mm), not necessarily run through twice, it depends.

Both are conditioned.
To brew or not to brew, that would be a stupid question !
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