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Old 05-08-2008, 02:25 AM   #1
ohiobrewtus
 
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This was the first crush with my Barley Crusher at factory settings. I ended up with 68% efficiency on this batch and 63% on the next batch. I previously was in the 74%-78% range with AHS's crush. This appeared to be too fine to me and I wanted to get the thoughts of some other AG/BC users as I was certainly expecting an increase in efficiency with my BC, not a decrease.

Thanks!
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Old 05-08-2008, 02:43 AM   #2
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Without running my hand through it, it's hard to tell. If you spill some onto a dark piece of paper, it'd be easier. It appears to be a nice, even crush. I don't see any flour, though. I like to crush mine to the point where I can just see a little flour. Like Bobby says, crush till it hurts!
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Old 05-08-2008, 02:45 AM   #3
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Well, it looks like a finer crush than I get, but not excessively so.
I've never heard of a finer crush resulting in reduced efficiency, unless it results in a stuck sparge. I don't think the grain crush is responsible for your efficiency decrease.

-a.

 
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Old 05-08-2008, 03:01 AM   #4
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Looks good to me!
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Old 05-08-2008, 03:24 AM   #5
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The pic is hard to tell exactly...but I'd say it looks fine. I crush really fine though--I get lots of flour. My efficiency is always 86% batch sparging.

Batch sparge or fly sparge?

With only 60s-70s%, you need to start checking some other things too though.
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Old 05-08-2008, 03:36 AM   #6
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If there are any whole kernals at all, you could crush it finer. But I agree that it doesn't look that bad at all. Certainly not enough to warrant that big of a drop in efficiency. Are you weighing out your own grain now? Every "1 pound" bad of grain that I've recieved is a little over. That would have artificially inflated your efficiency on past brews. Has anything else about your brewing changed?
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Old 05-08-2008, 03:36 AM   #7
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The crush look good from here too.

Efficiency issues may also result from inadequate Calcium in the brew water (are you using RO?), and pH (some 5.2 stabilizer may help).......

I'd say crush more, and crush more again. Crush more until you get a stuck sparge......then back it off

 
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Old 05-08-2008, 04:11 AM   #8
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Quote:
Originally Posted by ajf View Post
Well, it looks like a finer crush than I get, but not excessively so.
I've never heard of a finer crush resulting in reduced efficiency, unless it results in a stuck sparge. I don't think the grain crush is responsible for your efficiency decrease.

-a.
I wouldn't think so either, but I went from consistantly being in the mid to high 70's (sometimes in the 80's) to the 60's using the BC.

Quote:
Originally Posted by Dude View Post
The pic is hard to tell exactly...but I'd say it looks fine. I crush really fine though--I get lots of flour. My efficiency is always 86% batch sparging.

Batch sparge or fly sparge?

With only 60s-70s%, you need to start checking some other things too though.
I batch sparge. Nothing in my process has changed, equipment remains the same. BC/weighing out my own grain is the only variable that I can see.

Quote:
Originally Posted by shafferpilot View Post
If there are any whole kernals at all, you could crush it finer. But I agree that it doesn't look that bad at all. Certainly not enough to warrant that big of a drop in efficiency. Are you weighing out your own grain now? Every "1 pound" bad of grain that I've recieved is a little over. That would have artificially inflated your efficiency on past brews. Has anything else about your brewing changed?
Yes, I'm weighing out my own grain. Nothing else has changed.

Quote:
Originally Posted by xamers View Post
The crush look good from here too.

Efficiency issues may also result from inadequate Calcium in the brew water (are you using RO?), and pH (some 5.2 stabilizer may help).......

I'd say crush more, and crush more again. Crush more until you get a stuck sparge......then back it off
I'm not using RO water and never have. Nor have I ever used pH stabilizer..

I guess I'll see how my porter ends up this weekend and report back...
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Old 05-08-2008, 09:02 AM   #9
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Your crush looks fine to me as well. I agree with everyone else, adjust it down until you're scared! Then adjust it a little more.

I reran some LHBS grain through my brand new barleycrusher just because I wanted to use my new toy, and I got a slightly stuck sparge. I blame that on doing a double decoction though, since it got all gooey and runny.
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Old 05-08-2008, 10:44 AM   #10
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I don't see any flour in there. Looks a bit coarse to me. Also, are you sure your scale is right?
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