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Last time I brewed a high gravity 10 gallon batch, my shoulder and elbow ached, I tore skin off my knuckles hitting the sharp edge of the mash tun. I have had bits and pieces lying around to make an electric mash tun stirrer for about twelve months and this latest effort gave me that little bit extra motivation to get it started. Why an electric mash stirrer? I have been in the habit of stirring my mash every 15 minutes or so, for at least 5 minutes, it seems to increase my efficiency a little, but it speeds up conversion quite a bit and allows for much more even mash tun temperatures. This more even temperature allows for a much more controlled level of conversion, this is because in cooler parts of an un-stirred mash, different enzymes are at work compared to the warmer parts of the tun! The most important part of consistent brewing is control over what is happening, so this is just another method of controlling what is going on in the tun! Enough chat! The basic design of my stirrer is to build a two paddle stirrer, each of the paddles should be adjustable to allow different mash depths to be catered for. Each paddle will bring the mash up through the middle section and push it down around the outside of the tun. This is done by cutting the paddles and folding them the correct way. Power is provided by an XD Falcon windshield wiper motor and a 15 amp battery charger. The drive is a toothed belt. The following table shows each of the components as they are prepared, assembled and finally in operation. Note : this page is not complete but is a work in progress :) Let me know how interesting you find this information!
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McKenzie Brewing is operated by John Fraser, this site should be used as a reference only! Electricity and water do not mix well and may take your life. Use at your own risk! |
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| eBay Sniper | Visitors as of July 11th 2008 |
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