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Old 02-14-2008, 02:56 AM   #1
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Default Wiper Motor Mash Stirer

I have seen a few people have this, and it looks fantastic and kinda easy to do..

anyone have a link of instructions on how to build one? I will be using a keg top as a lid.. so I can use the dip tubes.

Thanks!


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Old 02-14-2008, 12:26 PM   #2
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I dont have any pics of the build but what I used was a car wiper motor and tig welded the 2 dip tubs together and at the top of the tube I ground down a brass plug so it fit in inside of the tube, drilled a hole thru it and the wiper shaft & used a cotter pin to hold it to the wiper shaft.I use a power supply from a computer to convert the 120 volts to 12v for the wiper motor.
I figure it turns at around 60 RPM.I havent had a mash yet that could slow it down let alone stop it.
Hope this helps.






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Old 02-14-2008, 02:12 PM   #3
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yeah, i think it was yours that gave me the idea..

what kind of brass plug are you talking about?
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Old 02-14-2008, 03:26 PM   #4
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Not that I think there's anything wrong with the design, but I think inserting some solid 3/8" rods through the upright tube at various heights would be a nice way to stir more of the column.
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Old 02-14-2008, 04:23 PM   #5
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Or to keep it cheap & use up the dip tubes, You could just weld on some more arms made from the dip tubes. I can go only so deep because of my elements & probes. And what I have seems to move the mash pretty good but adding more might do an even better job.
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Old 03-12-2008, 02:38 PM   #6
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I am going to do this today.. i am thinking though about staggering the old dip tubes (having one on the very bottom, and another on the other side above it)

kinda like this
ll
ll
==========
.. ll
.. ll

and maybe turning them so that they cut into the mash.. like a fan blade

thoughts?
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Old 03-12-2008, 03:09 PM   #7
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I'm going with lots of smaller diameter tubing, horizontally spaced on the shaft (also tubing). I am also going with a ice cream motor as it has more torque and only cost $30. Wonder if wood would be ok if you seal it. But, what would you seal it with that is food grade??? Humm, is polyurethane food grade?
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Old 03-12-2008, 05:03 PM   #8
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You could seal the wood with silicone, though I would go with ss.
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Old 03-12-2008, 05:18 PM   #9
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WortMonger: According to the FDA, any modern wood finish that is completely cured is considered food grade. I think the FDA specifies a month to fully cure polyurethane finishes. I'd give it more if you build up a lot of coats. Alternatively, an epoxy finish would be superb and will seal the best.
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Old 03-12-2008, 08:58 PM   #10
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It is looking like copper is the easiest, once again, lol.


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