Author Topic: Need advice on stirrer plate  (Read 2066 times)

Offline imperialstout

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Need advice on stirrer plate
« on: January 20, 2013, 03:41:21 PM »
Just starting to make yeast starters. Noticed the cell count is much higher if a stir plate is used. Stir plates run from $70 to over $200. What do you use? Want one that runs quietly.

Currently use a 3 L wine jug with a cap drilled and grommeted for an airlock. What would be the benefit of getting a 3 L flask, assuming the stir bar will remain centered in the concave bottom of the wine jug? Any thoughts on what size stir bar to get?

Offline davidgzach

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Re: Need advice on stirrer plate
« Reply #1 on: January 20, 2013, 03:48:59 PM »
http://www.stirstarters.com/

Use the stir bar that comes with it.  It works great in my 5L Erlenmeyer.

Dave
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Offline hokerer

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Re: Need advice on stirrer plate
« Reply #2 on: January 20, 2013, 04:04:25 PM »
Currently use a 3 L wine jug with a cap drilled and grommeted for an airlock.

You want max growth with a starter which, among other things, means maximum oxygen exchange.  For that reason, it's better not to use an airlock for a starter.  Just cover the top with sanitized aluminum foil.
Joe

Offline hopfenundmalz

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Re: Need advice on stirrer plate
« Reply #3 on: January 20, 2013, 04:11:43 PM »
http://www.stirstarters.com/

Use the stir bar that comes with it.  It works great in my 5L Erlenmeyer.

Dave
I have one. Like it. Dan backs up his product.
Jeff Rankert
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Home-brewing, not just a hobby, it is a lifestyle!

Offline Mark G

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Re: Re: Need advice on stirrer plate
« Reply #4 on: January 20, 2013, 04:53:08 PM »
http://www.stirstarters.com/

Use the stir bar that comes with it.  It works great in my 5L Erlenmeyer.

Dave
I have one. Like it. Dan backs up his product.
Another vote for Stirstarters. I use it with both 2 & 5L Erlenmeyer flasks.
Mark Gres

Offline deepsouth

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Re: Need advice on stirrer plate
« Reply #5 on: January 20, 2013, 06:28:31 PM »
i use a stirstarter as well.
Hoppy Homebrewers of South Mississippi (est. 2009)

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bottled:     white house honey ale

Offline heavyeng

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Re: Need advice on stirrer plate
« Reply #6 on: January 23, 2013, 05:41:45 PM »
I just put my DIY Stir Plate project to use tonight.

Under $30 bucks from start to finish.

Beer...It isn't just for breakfast anymore.

Offline gmac

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Re: Need advice on stirrer plate
« Reply #7 on: January 24, 2013, 07:34:29 AM »
I just put my DIY Stir Plate project to use tonight.

Under $30 bucks from start to finish.
Pictures?

Offline Pinski

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Re: Need advice on stirrer plate
« Reply #8 on: January 24, 2013, 08:37:59 AM »
Stirstarter, good product, good price, great service.
The only thing i don't like is having to carefully balance my 5L flasks, but it works like a charm.
Thank you BEER!

Offline chuckd76

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Re: Need advice on stirrer plate
« Reply #9 on: January 24, 2013, 08:42:39 AM »
Another user of the stir starter here. Although I did feel kind of foolish after I opened it up and saw that it's a pretty simple build. Also got a Midwest Supplies yeast starter kit but I find that the best thing I like about it is the foam stopper as the flasks and the DME can be found anywhere.

Offline heavyeng

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Re: Need advice on stirrer plate
« Reply #10 on: January 24, 2013, 09:50:52 AM »
I just put my DIY Stir Plate project to use tonight.

Under $30 bucks from start to finish.
Pictures?



Fan 4.05 http://www.amazon.com/gp/product/B007JPNE7A/ref=ox_ya_os_product
Flask 14.56 http://www.amazon.com/gp/product/B001BLOHVK/ref=ox_ya_os_product
Stir Bar 7.33 http://www.amazon.com/gp/product/B002VBW5HW/ref=ox_ya_os_product
Rare earth magnets @ Wally World 4 each in a blister pack for 3.79
8X10 piece of acrylic at Lowes 1.79

I had the hardware and the 12VDC power supply on hand.

The acrylic is enough for two.
The fan with four magnets creates a good vortex in a 1L flask.
Beer...It isn't just for breakfast anymore.

Offline stadelman

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Re: Need advice on stirrer plate
« Reply #11 on: January 24, 2013, 10:25:00 AM »
For those interested in a StirStarter, Bell's carries them for $40.  They have 10% Off Site Wide right now...

http://www.homebrewfinds.com/2013/01/bells-general-store-10-off-for-hbf.html

That brings the cost down to $36 + shipping.

Or, if you get a StirStarter directly from StirStarter, there's a free stir bar offer toward the bottom of HBF's Top Finds Page...
http://www.homebrewfinds.com/p/top-finds.html

Also 1 Liter Erlenmeyer for - $9.99...
http://www.homebrewfinds.com/2013/01/reader-tip-1000-ml-erlenmeyer-flask-999.html

Offline davidgzach

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Re: Need advice on stirrer plate
« Reply #12 on: January 25, 2013, 06:56:22 AM »
I just put my DIY Stir Plate project to use tonight.

Under $30 bucks from start to finish.
Pictures?



Fan 4.05 http://www.amazon.com/gp/product/B007JPNE7A/ref=ox_ya_os_product
Flask 14.56 http://www.amazon.com/gp/product/B001BLOHVK/ref=ox_ya_os_product
Stir Bar 7.33 http://www.amazon.com/gp/product/B002VBW5HW/ref=ox_ya_os_product
Rare earth magnets @ Wally World 4 each in a blister pack for 3.79
8X10 piece of acrylic at Lowes 1.79

I had the hardware and the 12VDC power supply on hand.

The acrylic is enough for two.
The fan with four magnets creates a good vortex in a 1L flask.

Nice!
Dave Zach

Online Kaiser

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Re: Need advice on stirrer plate
« Reply #13 on: January 25, 2013, 07:40:43 AM »
FYI: I recently played with PWM (pulse witdth modulation) for fan speed control and it works much better than using voltage to control fan speed. But it does require a few more parts and soldering skills.

Offline hopfenundmalz

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Re: Need advice on stirrer plate
« Reply #14 on: January 25, 2013, 08:07:33 AM »
Stirstarter, good product, good price, great service.
The only thing i don't like is having to carefully balance my 5L flasks, but it works like a charm.
I saw that Dan has a larger model that a 5L sits nicely on.
Jeff Rankert
Ann Arbor Brewers Guild, AHA Member, BJCP Certified
Home-brewing, not just a hobby, it is a lifestyle!