Seawolf
Well-Known Member
Is there a fix for a stir plate that keeps throwing the stir bar? I can't get the bar centered, and it doesn't spin for more than 10 seconds or so.
GilaMinumBeer said:Do you keg?
Try placing a o-ring at the center of the bar as a pivot point. Works for me and I use the curved bottom 1 gallon jugs.
conpewter said:Mine would throw all the time on my home built stirplate.
I had two hard drive magnets close together on the hub of the fan (differing poles facing up). I ended up putting a thin piece of pressed wood across the hub of the fan and gluing the magnets to the end of that so they were about 1" apart.
I've also heard that if you go down to having one magnet it can work as well.
s3n8 said:I originally had 2 of the kidney shaped magnets from a hard drive on my fan. No matter what polarity NN/NS/SS and spacing or stacked, I could never get it to grab as well as if I only had 1 magnet.
I recently moved the fan a little closer to the bottom of the plexiglass, and now can pull a vortex in 1.5L of wort in a 2L flask with my 2" bar. I have 2mm spacing above my magnet to the plexiglass which the flask sits directly on. Moved it closer by 2mm, and it made a huge difference in stability at speed.
david_42 said:I had similar problems with two magnets. Pried them off and centered one. Works much better.
slyngshot said:Where did you put your one magnet? centered?
smizak said:When I built my stirplate the first time I used hard drive magnets as well. They were super strong, but I think something about the shape of them does not serve well for use as a stirplate, as I threw the bar after awhile, even in plain water.
So I bought a package of round neodymium magnets at my local hardware store for $4, the small button shaped ones about a quarter inch in diameter. I glued them on the fan(opposite polarity of course) so they were exactly the same length apart as my stirbar(1.5") and I have never thrown it, even after three days spinning in wort.
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