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Maelstrom® Stir Plate

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Maelstrom® Stir Plate

SKU: 40332

Easy to use with an intuitive interface, the Maelstrom® sets the new standard as the most powerful and versatile homebrewing stir plate ever created.

The first industrial-grade programmable stir plate designed specifically for yeast starters.

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The first industrial-grade programmable stir plate designed specifically for yeast starters.

Breed a Herculean army of yeast for brewing bigger beers than ever before. Powerful rare earth magnets churn through any size starter and never throw a stir bar. Five-speed control adapts to sizes from minute to mammoth, for starters in a 1L flask to a 5-gallon carboy.

Command a massive starter while you’re at work or over the weekend. Let it run indefinitely or program up to 48 hours of stir time. Schedule to settle out yeast just in time to come home and brew.

Watch Maelstrom® surge through starter wort. The transparent body shows the magnets whipping through rotation. Plus, a seamless plastic surface makes for easy cleaning.

Easy to use with an intuitive interface, the Maelstrom® sets the new standard as the most powerful and versatile homebrewing stir plate ever created.

  • Now includes a 50mm stir bar!
  • Five distinct speeds to accommodate starters up to 5 gallons
  • Scheduling function for up to 48 hours
  • Seamless body for easy cleaning & maintenance
  • Powerful magnets will never throw a stir bar
  • Translucent body lets you watch the magnets in rotation
  • Standard 12V Power Adapter
  • Large 8” W  x 8 ½” L stirring platform
*You may also need a flask.

Details & Instructions

Additional Information

4.8 / 5.0
27 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
It is a TANK
Just upgraded my 3 "project kit" stirstarters to 3 of these Maelstrom's. I typically do 15 gallon batches of Pilsner - so 5 liter starters are normal for me. These stir plates remove the risk of the flask falling over. No longer do I have to worry about the stir bar being thrown or fighting to get it centered. On speed setting 2 it will easily vortex a full 5L starter. Setting 3 and above are a bit more than you need and get a bit louder than I want - gotta keep the Wife content while making yeast babies! Product literature states it is for a 1L, 2L or 5L flask. There is no reference to the device being engineered to withstand the weight of a 5 gallon glass carboy filled...
February 13, 2016
Good for several years then it needs this fix
I have owned this stir plate for probably 5 or so years. When I first got it it churned through 2L yeast starters like a champ.

Over the years it would get harder and harder to get the stir magnet to start turning. It wouldn't start turning the stir bar until I removed the flask from the plate and then set the flask back down as soon as the magnet started turning. Like it was losing torque.

Today I got fed up with it. The magnet wouldn't even spin with no flask on it. I even was giving it some nudged with a spare stir bar I have to try and get it going. No torque. Sometimes I could get it going but it would stay spinning with flask on it and stir bar in place in the middle.

So here is the fix! I took it apart and found that the the screw that mount the motor to the mount under the magnet were magnetic. Also, the screw that holds tightens the magnet on the motor shaft was also magnet. What was happening was the screw on the motor shaft was aligning and locking in with either screw on for the motor mount. I went to do it best and got some stainless replacement screws. I verified they were not magnetic before I left.

I got them installed and tested. It is working now. I also found that the smaller stir bars work best with the magnet. 50 mm stir bar still has trouble getting started but my 25mm stir bar takes right off.

So there you have it. I am not sure if the motor has brushes in it if it does there isn't a way to change them. I thought about replacing the motor, but it has no markings on it and it looks very unique with has the wires attach to it. I doubt I would be able to find a replacement motor without doing tons of research on the internet. Hopefully this fix last a long time.
September 22, 2017
Love it
Works like a charm, well made, sturdy, buy it you'll be happy
January 10, 2017
1 year ago
Oh Yeah!
This thing kicks butt (instead of kicking the stir bar) with carboy sized starters. Easily centers the bar through the thick glass of carboy base. I also like the fact that the surface is pretty much waterproof (not for submersion) and spills / splashes /drooling are easily cleaned off.
May 15, 2017
11 months ago
Speeds up everything nicely.i do recommend this to all berwers
November 24, 2016
1 year ago
Works great set and forget
Works great set and forget with not hassle. Very quite and easy to use.
March 1, 2016
Great customer service!
I really appreciate the fantastic customer service that we received- the item didn't work when we got it but was resolved super quickly!! Thank you!
January 12, 2016
Stir it up
After brewing approximately 20 high gravity beers this is my first batch that I made a starter. The Maelstrom stir plate was the perfect tool for the job. It made a huge difference, taking a good beer and making it a great beer. I highly recommend getting some Fast Pitch to go along with the Maelstrom, to make the easiest and best starter you will ever make.
March 5, 2016
Built like a tank
Works great with a 1/2L, 1L, and 2L (haven't tried bigger) flask. The timer is a useful addition. Why waste time brewing with an insufficient pitch.
March 9, 2016
Very Nice!
Smooth, quiet and plenty big enough for 5000 ml starters!
April 24, 2017
11 months ago
Customer Q&A
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Browse 2 questions Browse 2 questions and 6 answers
What is the most sanitary way to get the magnet out of the yeast before pitching?
S C on Jan 29, 2016
BEST ANSWER: Typically, I recommend using a second magnet and using that to draw the stir bar up and out of the flask
What is the RPM for each of the 5 speed settings on your Maelstrom Stir plate?
A shopper on Jan 9, 2017
BEST ANSWER: While I haven't specifically tested this, I'm going to assume that the RPMs of each speed would vary based on the size of the stir bar you are using. I've used a .75" stir bar for 1 liter and at a 5, the speed was WAY too fast. On the other hand, I've used a 1.5" stir bar in a 3 liter starter and had to keep it at a 4 to maintain a slight dimple in the starter. I hope that helps but I don't have the specific RPMs of the actual magnets.

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