Tell that to 3068! I had mine on a stir plate, about 1.4 L in a 3L flash and it made a huge mess. I hadn't ever seen yeast climb out when being stirred before but hey where there's a will there a way.elcarter said:I'm by no means an expert, I think as long as your knocking the Co2 out of solution so you avoid the yeast volcano you should be where you want to be.
If there's any extra benefit / determent from going faster to yeast production / happiness I'm not sure.
I used the same dimmer and am also experiencing a whining noise, did using a fan without LEDs fix that issue? The noise stops when it's turned on full with mine but that kinda defeats the purpose of having wired a dimmer :blink:lael said:I used one of these: to reduce the speed, but have found that the fans make an annoying whining noise. Does anyone know why / have any suggestions?
I'm thinkin a new thread is required!!! Awesome stuff. I'm on my brewing shopping spree ATM, and was seriously just about to go hit up the guys at Digital home brew for some kit.lael said:ok... so a while back I posted that I had ordered those Delta 1212AFC server fans. Tried controlling them with an LED dimmer... annoying whine. Got interested in PWM control, and then... hmm 4 pin fan.. get realy PWM control. I didn't know how, so I found a post where people were talking about doing it on overclockers forum.
Long story short - a friend helped to build an awesome controller board. I got frustrated trying to make it work properly. Gave up for a while, ordered something else which didn't work for the fans. Gave me motivation to get it worked out.
Behold the stir monster!
5L being stirred - turns out that straight walled is harder to stir than conical and that glass is easier for the stirbar to stay steady on (no surprise).
There was a post that said faster stirring was better...
I can't get the large stirbar to go quite fast enough to do this, but with a 1" one the stirbar gets completely enveloped in air. I was scared the stirbar would launch off and break the glass the first few times... but it slows down pretty quickly when it gets launched (the little one can go all the way to 4000rpm... )
So why do you need a big stirplate? - big starter of course!
Hard to tell how far the vortex goes down. Not that far. The stirbar is kind of noisy in the bottom of the 20L handypail.
Next step... stir a fermenting beer for the first two days?