Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.


Messages - Kaiser

Pages: 1 ... 113 114 [115] 116 117 ... 119
1711
Questions about the forum? / Re: Attachments
« on: November 23, 2009, 11:38:09 AM »
No rush, just something to consider.

Kai

1712
Equipment and Software / Re: My simple carboy washer
« on: November 23, 2009, 11:37:19 AM »
Here is a quick google search: http://www.google.com/products?hl=en&source=hp&q=utility+pump&um=1&ie=UTF-8&ei=C9YKS6XnCsyXtgeWnaXJCg&sa=X&oi=product_result_group&ct=title&resnum=1&ved=0CCAQrQQwAA

You can also look at your local home improvement store. I think the only thing that is important is that the pump is not too tall.

Kai

1713
All Grain Brewing / Re: wort quality and water ratio question
« on: November 23, 2009, 11:32:57 AM »
Jscbeer, Welcome to the board 

The rule of thumb is: "All other things being equal (and this is a very big wild card), a thinner mash will yield a wort that will attenuate more than a thicker mash". There is a lot going in in this statement.

This is not what I have found and many brewing authors agree with me on that. Mash thickness has very little effect on the fermentability of the produced wort. My own experiments on that subject are documented here:

http://braukaiser.com/wiki/index.php?title=Effects_of_mash_parameters_on_fermentability_and_efficiency_in_single_infusion_mashing#Mash_thickness

And even if we use the effect of mash thickness on the heat sensitivity of mash enzymes, in particular b-amylase, the opposite what you stated should be true. This is because b-amylase is more stable in thick mashes and should therefore be able to produce more fermentable sugars compared to thin mashes where it doesn’t live as long. But that isn’t true either. My explanation is that starch conversion in thick mashes is slower and there are other inhibiting factors that cause b-amylase to work slower thus compensating the fact that it lives longer.

And even if that wasn’t true wouldn’t we be able to compensate for the higher fermentability of thin mashes by simply mashing a bit higher?

Kai

1714
I have a hard time justifying the price for a conical. Sure carboys and buckets are a hassle, but for the price of even the Minibrew fermenters I can build a really nice temp controlled fermentation chest out of a chest freezer. And there is so much more other equipment that has a better chance improving your beer than a conical.

Are the buckets and carboys costing you a lot of water?

Kai

1715
Take this reference (Impact of Dark Specialty Malts on Extract Composition and Wort Fermentation)
http://www.scientificsocieties.org/jib/papers/2005/G-2005-0330-275.pdf

That's a nice paper. Thanks for sharing.

Kai

1716
Equipment and Software / Re: Spunding valve experience
« on: November 23, 2009, 09:11:30 AM »
I haven’t used it for primary fermentation, but commonly use it for secondary fermentation to carbonate the beer. My experience is that it works fine.

The literature reports that primary fermentation under pressure reduces esters and higher alcohols which allows for fermentation at a higher temperature. Some breweries do that to speed up fermentation while being able to keep the fermentation clean.

There is a guy over on homebrewtalk.com who swears by primary fermentation under pressure. Here is the main thread: http://www.homebrewtalk.com/f13/closed-system-pressurized-fermentation-technique-44344/

Kai

1717
Questions about the forum? / Attachments
« on: November 23, 2009, 08:34:02 AM »
Is there a way to attach files (pictured, spreadsheets ..) to posts? I found that to be a very useful feature on other boards.

Right now I just upload them onto my website, but not everybody has such a place available and it would be nice it if would be easier to post pictures.

Taking it a step further, it would also be nice to attach other files. Spreadsheets for example. When explaining water treatment I’d love to be able to fill in a water spread sheet for brewers who need some help and then attach it to my post.

Is this something that is not possible with the type of board software we are running or is it just disabled?

Kai

1718
All Grain Brewing / Re: wort quality and water ratio question
« on: November 23, 2009, 08:08:29 AM »
Are there any downsides to doing 2/3 water in mash and 1/3 in sparge?  Do you find your efficiency suffers from this?

Efficiency may suffer, but that is part of the idea of getting higher quality wort through thinner mashes. The less you sparge the less undesirable compounds you get into the kettle but the lower your efficiency will be. This being said there is little change in the batch sparhing efficiency unless the run-off sizes are out of balance by quite a bit. Just look at this graph which plots batch sparging lauter efficiency over the ration between first running volume and total kettle volume (the wording in the chart is misleading). This is for a 1 sparge batch sparge:



(http://braukaiser.com/wiki/index.php?title=Batch_Sparging_Analysis)

Kai


1719
Equipment and Software / Re: My simple carboy washer
« on: November 23, 2009, 08:03:15 AM »
This one looks much simpler and cheaper than sweat fitting a bunch of copper piping.

I was thinking about copper before. When I had a few fittings in my hand and was looking at the price I though WTF. Especially when the PVC/CPVC display was right next to it and looked so much cheaper. I was even planning to make a fitting that screws onto the pump (w/o the male QC that I ended up using) but the threads didn't end up fitting so I settled on the much cheaper option with the male QC.

Make sure the pump is not too tall and the pump fits into the bucket while being able to shoot water up the center. I quess you could add two ellbows if the latter becomes a problem.

Kai

1720
All Grain Brewing / Re: Aciduated Malt
« on: November 23, 2009, 05:49:30 AM »
Most likely b/c your pale ales would have been fine without it. ;)

1721
Equipment and Software / My simple carboy washer
« on: November 22, 2009, 09:38:14 PM »
Today I put together a carboy washer with a few things I had lying around at the house. Here is a page with pics and a description: http://braukaiser.com/wiki/index.php?title=Carboy_Washer

That idea has been around for a long time and many brewers have build one. I just felt like documenting how simple it can be to build one. The only major piece of equipment is the pump which I already had for pumping ice water through my immersion chiller.

Kai

1722
The Pub / Re: What do you like besides homebrew
« on: November 22, 2009, 09:05:51 PM »
Did somebody say backcountry?
http://www.vimeo.com/7728596

Wow. I didn't know that you get so much snow in VW. I used to live in NC and moved back to New England b/c I missed the snow.

Kai

1723
Equipment and Software / Re: Brewing Software
« on: November 22, 2009, 07:21:08 PM »
I used to use Beersmith a lot. But then I started to miss a number of features and found that I rarely had a pc with me when I needed to take notes. So I developed my log book pages and have stopped using Beersmith.

Now that I have discovered the usefulness and constant availability of mobile devices like the iPod, I'd love to see an app that allows me to take notes very quickly and associate them with a given batch. I have brewpal, but don't find it very useful for my brewing. But I have a spreadsheet app that I use for efficiency analysis and water design.

Kai

1724
Beer Travel / Re: What are you're favorite online beer travel resources?
« on: November 22, 2009, 07:12:56 PM »

I don't think I can drink that much for breakfast, though.

Beer for breakfast is a fun thing during vacation but otherwise it seem very close to alcoholism to me. On occasions I have sampled beer in the morning b/c I remembered that I wanted to take a gravity reading. I always get very odd looks from the wife when I drink the sample. But that is not really beer for breakfast for me ;)

Kai 

Kai

1725
Beer Travel / Re: What are you're favorite online beer travel resources?
« on: November 22, 2009, 05:52:08 PM »
For Germany this is very good.  I can vouch for Berlin and Bamberg. 
http://www.europeanbeerguide.net/

I was about to post "google", but that looks like a good site indeed.

Kai

Pages: 1 ... 113 114 [115] 116 117 ... 119