Originally Posted by Indytruks138
Is the fan strong enough to get a whirlpool in a 4L starter?
Ok so here are a few pictures of the stir plates. I don't know if the better one will spin a 4 liter flask, but I have a good photo of it spinning a very ull 2 liter one with the vortex heading all the way down to the stir bar occasionally. This is with a 1 inch octagonal stir bar with a pivot in the center, and it looks like it would spin larger volumes well:
This one is a gutted HDD enclosure. Right now the case can be opened with no fittings, as the top is just resting on it. It is secure and has a nice rubber ring on the bottom to prevent it shaking or moving.
Here is the looks of my first homemade stir plate, where you can see that the vortex is just a dimple with the same stir bar.
if I use a smooth 1 inch bar it is a bit better but slightly so:
You can see that I had to play a bit with the height on it to get the magnets right. Perhaps you can swap the power supply on it to get more juice to spin the bar faster?
Considering you may want to play with the less powerful one I'll sell that one for 15 shipped. It does work but you may want to play with it a bit. The first one described i'll let go for 20 as mentioned before, but the power charger is beefy so buyer pays shipping.
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