Magnetic stirrer for 5000Ml flask?

I was given a 5000 ml flask. What will be a good stirrer to use? The stir starter plate recommends up to a 2000ml.

A 1.5 hp Cruise & Carry outboard motor.
I've spun a 2" stirbar with almost 6 litres
on a home made muffin fan stir. It works
you don't need a tornado inside.

I have a 4L and I get an equally good vortex with a 1/2" and a 2".

I like the larger bar because it spins a lot slower. Note that my DIY stirplate had to be modified to work well with the 2".

I have a 4" bar I use in my 4L flask. Works great.

Irrenarzt said:

I have a 4" bar I use in my 4L flask. Works great.

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What the heck? This a cow magnet?

No but close. It also doubles as a weight for my hopsack in the keg to keep it from floating.

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I ended up getting the stirstarter.com plate. He said people can use the 5000ml on it, and can perform with it full.

Julohan said:

I ended up getting the stirstarter.com plate. He said people can use the 5000ml on it, and can perform with it full.

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i'm interested in knowing if it works out....i have a stirstarter and have been thinking of getting a 5l flask

I ordered 3 stir starters last week and asked about the 5l flasks. He said that they work fine with them but for $8 could use a large box.

The standard stir starters are 6x4x2, but for the $8 extra he can make one with a 8x6x3 box.

Here is the info he gave me showing the 5l in use.

http://picasaweb.google.com/dan.jeska/A5LiterFlaskOnAStirStarter#

Right on the front page under March News, there is a link for "See the StirStarter in action with a 5 liter Erlenmeyer flask."

I would add a few rubber sticky pads that protect your table tops or funiture preventing any 5 liter accidental slips off of your large yeast starters.
Hell I used brand new 1 gallon kelley Moore plastic paint cans with the steel lid hot wired off as my starter flasks with a plastic lid having a tight fit.
Call me cheap below was a phonograph record player turn table as my speed control with a 50# U shaped magnet driving a Cow Magnet stir bar. DIY Popular Mechanics thinking here brewing on the cheap LOL! years ago.
Hell I have my German grandpaents crocks, brewing equipment with porcelain cap bottles from when the brewed thru the prohibition era.