Magnetic stir plate

[Beerbuddha]

Hi all,

I'm looking for a stir plate that will work up to 5L starter if needed.

Ant recommendations ?
Cheers BB

[johnrm]

Diy works well. I've a cheap ass from MBW, my homemade is as good.

[Beerbuddha]

I have a small diy stir plate but if I go bigger than litre it doesn't make any kinda vortex just agitated the yeast which is all I need but it just lacks power...bit flimsy and magnet does tend to move off centre causing magnet to just sit there.

Just time for an upgrade.

I was looking at one of those Maelstrom yeast stirrers but don't deliver outside USA and probably 110 volt anyways.

[Jonnycheech]

I bought one of these a few months back, great bit of kit. I haven't made a 5L starter with it but they claim it handles up to 5L.

http://www.digitalhomebrew.com/digital-stirplate-v3

[Beerbuddha]

That's spot on..... good price also.  Best so far as most I have looked at are like 200+ and have heating which I don't need. 

[neoanto]

You dont need to have a vortex.
You just need to agitate the yeast. If you have too much of a vortex its like a centrifuge forcing the yeast out to the side. (I was talking to a microbiologist when i was making my stir plate).

[molc]

Aye by all accounts spinning too fast can cause shear and damage the yeast, so just keep it agitated.

I got one of the stirplates linked above and it's just the business. Faultless in operation.

[Beerbuddha]

Ok i have cash to burn and i'm just talking myself into excuse to upgrade 
I know you don't need a vortex but i guess if you can cause a vortex in large 5L starter it just means the unit has a bit of power and will last years needed.

[Leann ull]

As other have said a gentle stir not a beating 
I use a computer fan for 5 litres and using a variable power controller or sliding power socket which does the job, the trick is always finding that point where the yeast is just in suspension but not getting thrashed

[brenmurph]

all the techys in the club, I would have thought this would be such a simple thing to make, is it not  just a computer fan in a box with a variable resister..@

total cost fan 5 euros, junction box 5 euros, variable resistor 2 euros.

I dont use one so cant comment and never tried making one coz if its that simple to make I might start putting a few together I think I recall dempsey or partrige had a home made one

[Leann ull]

http://www.nationalhomebrewclub.ie/wordpress/brewwiki/diy-stirplate/
Spacing is important of the magnets and distance and can be fiddly to get right at the start
I just use one of these
http://www.amazon.co.uk/AMOS-Universal-Universelle-Voltage-Replacement/dp/B004B9PP56/ref=sr_1_cc_6?s=aps&ie=UTF8&qid=1443000029&sr=1-6-catcorr&keywords=3v+6v+9v+12v++power+supply

Anyway shouldn't derail BB's thread with DIY we are here to spend his money 

http://www.amazon.com/Thermo-Scientific-Explosion-Proof-Stirring-Aluminum/dp/B005SVD0SA/ref=sr_1_3?s=industrial&ie=UTF8&qid=1443000290&sr=1-3&keywords=stir+plate

[brenmurph]

thanks CH ill make one while my mash is mashing instead of reading another chapter in Brewing Science and practice 

[brenmurph]

http://www.nationalhomebrewclub.ie/wordpress/brewwiki/diy-stirplate/
Spacing is important of the magnets and distance and can be fiddly to get right at the start
I just use one of these
http://www.amazon.co.uk/AMOS-Universal-Universelle-Voltage-Replacement/dp/B004B9PP56/ref=sr_1_cc_6?s=aps&ie=UTF8&qid=1443000029&sr=1-6-catcorr&keywords=3v+6v+9v+12v++power+supply

Anyway shouldn't derail BB's thread with DIY we are here to spend his money 

http://www.amazon.com/Thermo-Scientific-Explosion-Proof-Stirring-Aluminum/dp/B005SVD0SA/ref=sr_1_3?s=industrial&ie=UTF8&qid=1443000290&sr=1-3&keywords=stir+plate

Only 3000...will there b inport taxes on that do u think...?

[Beerbuddha]

Well my density meter cost 2000 so it will be in good company 

[Beerbuddha]

Bren is old school and i'm new wave  have it all in kildare