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Making a simple Savonius wind turbine

Making a simple Savonius wind turbine
by Lance Turner There are many situations where you might need a small amount of electricity, for instance running gate openers, safety lights, water level indicators and other low-power devices. While solar would seem like the ideal solution, quite often this is not possible due to location and shading problems. Just such a situation arose when I decided to make our new gates automatic. Why have automatic gates anyway? Anyway, I decided to provide power to the electric gate openers from a small wind turbine. The gate opener system itself is a home-made job, using car windscreen wiper motors driving long brass threaded shafts. Too much turbulence I briefly thought about what type of turbine I could install and how it would look. This type of vertical axis rotor is very robust and durable if built correctly, is relatively slow turning and can be easily built at home, without the hassles of aerofoil blade design and other problems associated with horizontal axis ‘propeller’ type turbines.

Scott H Young » The Art of the Finish: How to Go From Busy to Ac Today I have a treat for you. Cal Newport from Study Hacks is going to share some of his insights on productivity. Cal is also the author of How to Become a Straight-A Student and How to Win at College. Last August, I published an essay on my blog, Study Hacks, that was titled: Productivity is Overrated. Productivity is Overrated That is, the two don’t need to go together. What Accomplished People Do Differently From my experience, the most common trait you will consistently observe in accomplished people is an obsession with completion. It’s this constant stream of finishing that begins, over time, to unlock more and more interesting opportunities and eventually leads to their big scores. If you are productive without harboring this intense desire for completion, you will end up just being busy. In this post, I want to present a simple system, based on my observation of the highly accomplished, that will help you cultivate your own completion obsession. Setup: Construct a Project Page

How I built an electricity producing wind turbine Several years ago I bought some remote property in Arizona. I am an astronomer and wanted a place to practice my hobby far away from the sky-wrecking light pollution found near cities of any real size. I found a great piece of property. The problem is, it's so remote that there is no electric service available. That's not really a problem. No electricity equals no light pollution. One thing I noticed right away about my property is that most of the time, the wind is blowing. Let me state up front that I probably won't be able to help you out much if you decide to build your own wind turbine. Since no one seems to be reading the FAQ, I will answer the No. 1 question I get many, many times a day right here up front. Update: Here is a video of the wind turbine in operation. Update: Here is a video of me assembling and setting up the wind turbine on my remote off-grid property. I started the process of designing my wind turbine by Googling for information on home-built wind turbines. .

index Evidence Based Scheduling Evidence Based Scheduling by Joel Spolsky Friday, October 26, 2007 Software developers don’t really like to make schedules. Most of the schedules you do see are halfhearted attempts. Hilarious! You want to be spending your time on things that get the most bang for the buck. Why won’t developers make schedules? Over the last year or so at Fog Creek we’ve been developing a system that’s so easy even our grouchiest developers are willing to go along with it. The steeper the curve, the more confident you are that the ship date is real. Here’s how you do it. 1) Break ‘er down When I see a schedule measured in days, or even weeks, I know it’s not going to work. This forces you to actually figure out what you are going to do. If you are sloppy, and pick big three-week tasks (e.g., “Implement Ajax photo editor”), then you haven’t thought about what you are going to do. Setting a 16-hour maximum forces you to design the damn feature. 2) Track elapsed time You can’t, really. So, keep timesheets. Summary

Home Made Wind Turbine Want to build a wind turbine for your home? I have gathered several PDFs for those who want to build there own wind turbines and have links to them at the bottom of this post. They cover all types of wind turbines and issues that you may run in to such as wind speeds and noise. From reading these my self I have found that the Hi-VAWT takes all into consideration and is easy to replicate. In VENTURI horizontal axis Wind Turbines wind turbines the blades rotate and describe a circular surface. Fermentation Support Forum • View topic - Colonche - fermented prickly pear juice I wasn't sure if this goes here or under tonic ferments. Supposedly colonche is alcoholic, but only mildly so. A friend of mine gave me some prickly pears, but he must have had them in the back of his truck for a week first. I took the best of the bunch, and put them in a bucket of water to soak. I got the bright idea to ferment them into a beverage. Afterwards, I did some Googling, and found there is a traditional fermented beverage, made from prickly pear, called colonche. The method to make it involves juicing the fruit and cooking it way down into a thick syrup -- I imagine to concentrate the sugars. After I read this, after setting a small amount aside, I poured the juice and honey back into the pot, and simmered it down. Once it cooled, I added back the bit that I set aside, and put into a crock, covered with a grain bag. Overnight, it developed a bubbly scum on top: I scooped it off, and by the end of the day, it was back full force. Is this mold or just the yeasts bubbling away?

Hack Your Work: 23 Ways to Get Ahead, Work Less and Achieve More It’s something we’re all looking for – the perfect solution that will minimize our work life while still getting the stuff done that we need to get done. Well, that one solution doesn’t exist, but with a combination of strategies, you can get to where you want to be. Now, none of these tips will turn your life around. But they can make a big difference, and when used together, your work life might just be enjoyable, productive, low-stress and high fun. And these tips won’t work for everyone. They’re not meant to be used as a step-by-step guide. One goal.

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