Cooler Mash Tun Bag

Discussion in 'General Brewing Discussions' started by thunderwagn, Dec 28, 2018.

  1. thunderwagn

    thunderwagn Well-Known Member

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    I just got a new bag to place in my cooler mash tun and hope to knock out my 1st brew with it this weekend. I currently have a braided stainless hose in my tun. I'm wondering, can I just leave that in there now with the bag? I had issues with slow, stuck sparges with the hose, but I'm thinking with the bag to filter now, it should be fine to just leave it in?
     
  2. Iliff Avenue Brewhouse

    Iliff Avenue Brewhouse Well-Known Member

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    I leave mine in. I was having trouble collecting wort without it.
     
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  3. Hawkbox

    Hawkbox Well-Known Member

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    I actually put a bazooka tube back in because the bag was getting sucked into the drain hole. I think it will work fine to leave it in.
     
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  4. thunderwagn

    thunderwagn Well-Known Member

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    I thought I remembered someone mentioning that. I think I'm going to leave it in for now. Thanks.
     
  5. Head First

    Head First Well-Known Member

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    Palmers diagrams would convince you to leave it in. It's a fluid flow thing. If you take it out the wort drains from 1 tiny little spot. Braided across bottom changes that.
     
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  6. DanC

    DanC Active Member

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    I mash in a bag and took out the braid and added a 1/2 inch elbow as a dip tube. Works good.
     
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  7. thunderwagn

    thunderwagn Well-Known Member

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    I think @BOB357 mentioned he did the same. I'm going to try it first with the hose left under the bag and see what kind of flow I get.
     
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  8. Group W

    Group W Well-Known Member

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    I would leave it in. When I used a bag for big adjuncts I had a false bottom in a round cooler. I did remove the thermometer though.
     
  9. Medarius

    Medarius Active Member

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    Since most of my brews are 65-70% wheat I use a small BIAB to wrap my drain manifold in mash tun, to prevent getting stuck.
    Hose under bag can't hurt anything IMO
     
  10. Hogarthe

    Hogarthe Well-Known Member

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    Rice hulls are your wheat beer friends.
     
  11. Medarius

    Medarius Active Member

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    Yes but rice hulls are one time use. . But an extra small $3 BIAB bag last many batches, the bag I use fits like a glove on my manifold, . Easy peezy and no getting half way home and cursing at the windshield that I forgot hulls. :))
     
  12. thunderwagn

    thunderwagn Well-Known Member

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    The new mash tun bag worked beautifully by the way (with hose left intact).
    I've got nothing against using rice hulls and have used them often. My goal here however was mainly to test the capabilities of the bag and hose and sparging results using a mash that is typically known to cause stuck sparges. If I had issues, next step would have been removing hose and installing an elbow. I'm pretty happy with how things turned out though so I think I'll continue using the braided hose. I have however considered inserting a coiled up piece of copper to keep the hose from possibly compacting. I plan on some heavy grain bills coming up.
    My wort came out nice with no vorlauf necessary. Got my 1st runnings, and sparged no problem. I bet I cut 30-45 minutes off my brew day easy.
     
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  13. Hawkbox

    Hawkbox Well-Known Member

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    Noice. I'm a big fan personally of them. When my current one inevitably fails I'll be ordering another one.
     
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  14. Iliff Avenue Brewhouse

    Iliff Avenue Brewhouse Well-Known Member

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    Ha. Noice!!! Love it.

    Mine needs to be replaced soon after a lot of batches. I spin it to get wort out so it is beginning to stretch
     
  15. BOB357

    BOB357 Well-Known Member

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    The main reason I went with the elbow rather than leaving the braid in was to reduce dead space. I measured the dead space with water and had 6.5 ounces in my 10 gallon Rubbermaid cooler with the elbow. If I tilt it I only leave a couple of ounces. With the braid alone, I had almost 26 ounces (almost the same with a bazooka screen).
    Elbow.jpg
    An advantage the Rubbermaid cooler has is a screw on lid, allowing me to raise the bag a few inches off of the bottom and screw the lid on to hold it there once the second runnings have been collected. That allows it to drain and reduce grain absorption to BIAB level as well. With the elbow pointing downward and resting almost on the bottom there isn't a problem with sucking the bag in.
    The old tun is getting pretty scarred up from countless mashes. May be time to get a replacement.
     
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  16. Iliff Avenue Brewhouse

    Iliff Avenue Brewhouse Well-Known Member

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    I don't get any dead space because I pour all the wort into the kettle from the cooler after lifting the bag and letting it drain.
     
  17. Ward Chillington

    Ward Chillington Well-Known Member

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    No stuck sparges to date but not the most efficient I'm sure 20180915_130441.jpeg
     
  18. BOB357

    BOB357 Well-Known Member

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    Not too many years ago that was considered high tech in the homebrew world.
     
  19. thunderwagn

    thunderwagn Well-Known Member

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    Looks good. I do to much work like that every day so a bag is a godsend.
     
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  20. Ward Chillington

    Ward Chillington Well-Known Member

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    LOL...yeah funny how that sort of thing changes....I always recall how "leaching" was thought to be the same in medicine (i.e. high tech)! This set up allows me to put my cooler back into conventional use if I decide to. Not so much for the lid though...the sparge arm is screwed in and I drilled a hole in the top so I could just stick the hose on there and go. We'll figure out something there when we come to that bridge....I think I'm gonna brew before the next time I go camping.

    I have been musing about the use of a bag after seeing Hawkbox's setup. Looks like a nice and easy way to clean up after pulling out some spent mash for baking bread. 20180915_130453.jpeg
     

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