Fly Sparging, How long? - Home Brew Forums
Register Now For Free!

Home Brew Forums > Home Brewing Beer > All Grain & Partial Mash Brewing > Fly Sparging, How long?

Reply
 
Thread Tools
Old 02-26-2013, 02:26 AM   #1
baer19d
Recipes 
 
May 2008
Posts: 235


Just about everything I've read says that it takes about an hour to sparge a 5 gal batch but mine only takes about 15 min if that. I have a rotating sparge arm that I made out of 1/2 inch copper tubing and I use a March pump to push the water through the arm. Even if I regulate the flow as slow as I can to just get the arm to barely move it's still a fairly quick process. Could it be that my laughter tun is just a good design that allows the wort to flow freely or am I likely leaving behind lots of fermentables? My efficiency seems like it could be a little better but I don't think it's too bad. If I'm brewing a recipe that says the target OG should be 1.054 I'll probably hit between 1.054 and 1.051. I know there are lots of thing that can result in poor effiency other than sparging techniques.

 
Reply With Quote
Old 02-26-2013, 06:19 AM   #2
lespaul23
Recipes 
 
Nov 2012
Saugus, Ma
Posts: 208
Liked 20 Times on 9 Posts


When I fly sparge I make it take 1 hour to complete. It should not take 15min... a lot of ppl will chime in and say just batch sparge, but I like fly sparging. My method is not exact but ill get 78%-86% depending. I use no fancy equipment just a 10gal cooler, a strainer and a 2L pitcher to put my 170deg water in with. Works perfect, no channeling or drilling. I drain 1 gal every 10min or .5gal every 5 min. It works real good with no extra equipment and very little work.


But to answer your question, 45-60 min to fly sparge. And at the end of your sparge, your wort should look like water but have no water left in your tun for best efficiency.

Hope this helps a little.
__________________
Too much to list going on.....


Kevin

 
Reply With Quote
Old 02-26-2013, 02:50 PM   #3
rklinck
Member
HBT_LIFETIMESUPPORTER.png
 
rklinck's Avatar
Recipes 
 
Nov 2012
Washington, DC
Posts: 670
Liked 67 Times on 56 Posts


I am somewhere in between the two of you. My fly sparge of a 5 gallon batch usually takes about 30-45 minutes (my 10 gallon batch took longer). It sounds like you need to adjust the flow coming out of the mash tun. If you slow that down, the flow will take longer. If necessary, you could shut off the sparge water periodically to keep the water level a bit above the grain bed but not too high.

 
Reply With Quote
Old 02-26-2013, 04:05 PM   #4
LovesIPA
Recipes 
 
May 2012
Sacramento, CA
Posts: 1,518
Liked 205 Times on 154 Posts


Depending on the grain bill, I usually end up mashing with about 4 gallons of water and sparging with another 4. I only open the mash tun valve a little bit to keep the flow nice and slow. When I start sparging, I put a spaghetti strainer on top of the mash tun - the handles prevent it from falling in - and then lay a couple of paper towels into the strainer. Then I start pouring sparge water into the strainer, keeping an eye on the water level. I try to not let it hit the top of the grain bed.

When I have about two gallons of water left, I remove the strainer, close the valve, dump the rest of the water in, stir the crap out of it, vorlauf and drain the rest.

I get pretty good efficiency.

 
Reply With Quote
Old 02-26-2013, 04:39 PM   #5
Spartan1979
HBT_SUPPORTER.png
 
Spartan1979's Avatar
Recipes 
 
Feb 2011
O'Fallon, MO
Posts: 1,693
Liked 234 Times on 159 Posts


I guess it depends on how much efficiency you want to achieve and how you value your time. If I sparge for about 45 minutes, I can achieve 85% efficiency. If I cut it to 20 minutes, I get about 72%. I'd rather throw a few extra pounds of malt in my mash and save the 25 minutes.

 
Reply With Quote
Old 02-27-2013, 12:19 AM   #6
baer19d
Recipes 
 
May 2008
Posts: 235

So why exactly does a longer sparge resualt in better effiency? Does the water just have more time to dilute and extract the fermentables?

 
Reply With Quote
Old 02-27-2013, 12:28 AM   #7
lespaul23
Recipes 
 
Nov 2012
Saugus, Ma
Posts: 208
Liked 20 Times on 9 Posts


When sparging you are rinsing the converted sugars out of the grain. A longer sparge will rinse more sugars out.
__________________
Too much to list going on.....


Kevin

 
Reply With Quote
Old 02-27-2013, 06:18 PM   #8
formula2fast
Recipes 
 
Dec 2011
Yorkville, IL
Posts: 252
Liked 17 Times on 14 Posts


Can sparging too long hurt efficiency? My last two brews I have fly sparged over 75 min, and my efficiency has dropped almost 10 points. Unless my crush has not been as good from my LHBS, I have not changed anything else in my process. Might be going back to 60 min sparges.
__________________
TieBEERio Brewing Co. - We litrally have armadillos in our trousers.

 
Reply With Quote
Old 02-27-2013, 06:36 PM   #9
helibrewer
HBT_SUPPORTER.png
 
helibrewer's Avatar
Recipes 
 
Nov 2011
Santa Rosa, CA
Posts: 3,808
Liked 324 Times on 274 Posts


Long sparges should not drop efficiency. Conversion efficiency (how well the enzymes did their job) should be complete before you even start to sparge. Your brew house efficiency should improve with longer sparges since you have longer enzyme contact time, but that may not be desirable.

If your sparge water is hot enough (mash out temps), then sparging should gradually stop enzyme activity....it will take awhile for that hot sparge hot to permeate the grain bed and it's cooling as it works it's way down.
__________________
Something is always fermenting....
"It's Bahl Hornin'"

Primary:
Kegged: Bourbon Barrel Imperial Stout
On Deck: German Lager

 
Reply With Quote
Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Long sparging process i4ourgot All Grain & Partial Mash Brewing 4 11-28-2012 12:15 AM
Batch Sparging: How Long do you Stir? inhousebrew All Grain & Partial Mash Brewing 21 10-11-2012 05:49 PM
How long does the sparging process take? hiphops General Techniques 5 08-17-2010 11:41 PM
Sparging too fast (not too long) introduces tannins? Sopor42 All Grain & Partial Mash Brewing 13 02-23-2010 10:59 PM
Fly Sparging Vs. Batch Sparging New2HomeBrew All Grain & Partial Mash Brewing 28 08-08-2007 05:25 PM


Forum Jump