How large a Hopper to handle 5 gallon batch? - Home Brew Forums
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Old 04-02-2009, 02:23 PM   #1
Dec 2008
Long Island
Posts: 141
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I am planning to start grain brewing real soon! I built a mash-tun and wort cooler. Unfortunately my LBS doesn't have a grain crusher on site, so I've decided to buy a roller mill of my own, rather than buy already crushed grain. I liked idea of using larger rollers, so I decided upon the MM2-2.0 roller mill from Monster Brewing Hardware.

Now I want to design and build a hopper, but I don't know how large to build it. I'd like it to be able to handle enough grain for a 5 gallon batch. I'm thinking about using wood and/or sheet metal.

Does anyone know how many cubic inches or gallons the grain hopper needs to be?



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Old 04-02-2009, 03:09 PM   #2
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Feb 2008
Reed City, MI
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Depends on your beer. Some beers take a bit of grain, some take a bunch.

The hopper I put on my crusher seemed small, but I was in a hurry just to put somethign on and test the crush (it's a homemade crusher). It will handle just over 2 lbs.

I marked the 2 lb. line and use that to measure the grain I crush. As it is, I don't see the need to upgrade to a bigger one, myself. I can always stoop down and scoop up another 2 lbs. of grain easy enough.

I've seen them with 5 lb and larger hoppers though. Mine is roughly 4x6x10 inches, but that is an estimation, as I am at work and the crusher is at home in the garage.
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