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User: dattaway

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  1. Re:Strange happenings at MySpace on MySpace Down Due To Power Surge · · Score: 1

    Sounds to me like no one at myspace was familiar with industrial power or hvac and how easy it is to get crazy things done. We had millions of dollars worth of ice cream to protect and did our jobs quickly under the watchful eye of quality control.

    One of the local engineering contractors apparently has a fleet of these CAT diesel trailers. We got ours from Dean Machinery/Dean Engine Systems. They delivered within an hour. Everything is inside one of these 51' trailers, including the V16 twin turbo engine, three phase 480volt generator, 1000 gallon tank, several dozen 4/0 cables with plugins on both sides, switchgear, starting batteries . . . The only problem is that the engine needs to be at least 80 degrees to be started or it will shell the pistons. Cold starting gives LOTS of smoke. I believe they have a plugin for an engine heater for standy use. The mobile units run unusually quiet compared to permanently mounted generator frame sets.

    We had the electrical contractors from down the street help us bolt this onto our switchgear. We had our own tanker truck and filling station as we have our own truck fleet, so getting topped off was easy every several hours. The generator has an safety shutoff at 25%. I'm not sure why its at 25%, not 0.

    The electrical contractor accidently hooked up a phase wrong and had two tied together. If you ever seen a cable jump off the ground at someone from a 2.7 megawatt generator pulling in the main contactor, its a fun experience. Those generators are bulletproof. I would have prefered a high voltage 14KV setup as the cables would have been much smaller, but we managed to deal with these huge cables. Winding them back up to return the trailer took a few hours. The cables weighed about 5000 pounds. You could feel the magnetism if you walked on them. Good times.

  2. Re:Strange happenings at MySpace on MySpace Down Due To Power Surge · · Score: 2, Interesting

    Sounds like you guys need better maintenance on your hvac/generators. Are they ammonia or freon? Both are quite simple to service and are very redundant. I work with a 30,000 pound anhydrous ammonia system and various freon units and can't imagine how a building's air conditioner would "fail" for more than a few hours. Diesel generators should be tested weekly. The diesel engines on your fire system (you do have one in your building, right?) should also be tested weekly. Switchgear should be inspected/tested yearly. Does your maintenance office have weekly logs showing this was done? We do. Our insurance REQUIRES it. When our smaller backup generator wasn't enough for everything to run for a week, we brought in a bigger one.

    If you can't afford to do business in LA, move! Best investment I made!

  3. Re:Strange happenings at MySpace on MySpace Down Due To Power Surge · · Score: 3, Interesting

    I do refrigeration for a large food wharehouse. When our power went out, we trucked in a 3000KVA generator and bolted the cables into our switchgear. When your business depends on power, you know how to make calls and get it QUICKLY. It cost us 120 gallons of diesel per hour, but we would have had a catastrophic loss without it.

  4. Re:squished? on Lithium-Ion Batteries Linked to Airplane Fires · · Score: 2, Interesting

    That would be a plausible explanation if the battery contained elemental lithium. They don't. They contain compounds of Li.

    I've taken apart a few lithium coin batteries. They have a soft metalic square of what I believe lithium on one of the plates. The metal is soft, can be easily cut and oxidizes from its shiny appearance to a dull grey in seconds. It can be easily ignited into a very bright light which seems brighter than the sun. Also, it can be dropped into a cup of water and it skeeters around like a little motorboat. Seems like pure lithium if I ever saw it!

    The other lithium batteries seem to be some kind of oxide roll which gets very hot with exposure to air. Haven't been able to do pyrotechnic experiments with these yet.

  5. Re:I wonder about the article photo on Wind Powered Freighters Return · · Score: 1

    Several hundred tons? That would only be the weight of several shipping containers. Try a few more orders of magnitude! The mass of any steering mechanism on these ships is quite massive and going to require lots of energy to move it.

  6. Re:Easy cheesy on Forensic Analysis of the Stolen VA Database · · Score: 3, Informative

    Actually you can determine if the hard drive was copied. If you look into the hdparm utilities, you can access a drive's runtime, last smartcheck time, and other statistics. This information can be logged by a paranoid host operating system to check for unaccounted time.

    Unfortunately, I doubt anyone at Microsoft has ever thought of this nor even bothered to patent something so "novel."

  7. Does CSS suck? on Ask Håkon About CSS or...? · · Score: 2, Interesting

    A collection of pages of Why CSS:

    http://www.decloak.com/Dev/CSSTables/CSS_Tables_16 .aspx

    "I pretty much want to kick whoever invented CSS in the nuts."

  8. Re:Just another toy on Wireless Spectrum Analyzer on the Cheap · · Score: 4, Informative

    How about a USB extension lead and mount the whole device in the can?

    I've done exactly this to yagi antennas to eliminate transmission line loss. The result is a thin USB wifi wand:

    http://www.dattaway.org/antenna2.jpg

  9. Re:Math library for sale? on High performance FFT on GPUs · · Score: 1

    I'm sure hackers are already taking the Vista open source code and making competing distributions...

  10. Re:let's face facts on Apple vs Apple -- Judgment Day · · Score: 1

    Michael Jackson sings when you download Beatles:

    http://www.straightdope.com/classics/a951027.html

  11. Re:Dear broadcasters: on New Patent on TV Forces You to Watch Ads · · Score: 1

    It may not be a patent filed by the broadcasters, but they will be the executioner in the business model described by this patent. You have a point as I would consider that post to be more insightful than interesting.

  12. "Sony TV which runs linux" on Interest in Embedded Linux Remains Low · · Score: 4, Funny

    Nothing is going to change the fact it is a Sony.

  13. Will it explode on Fleischmann to Work on Commercial Fusion Heater · · Score: 2, Funny

    like a cell lithium laptop battery?

  14. Re:wow... what a bargain on HD-DVD and Blu-Ray Coming Soon to PCs · · Score: 1

    DVD's are cool, but Who is really going to take time to burn a stack? What if one gets scratched? I have a stack that is now useless, because it was contaminated by dust after the cat brushed by it. Something about polycarbonate and static electricity.

    Nobody shuts off their computer to plug in a set of drives when we have USB hubs. USB rules for backups these days. SATA is for freaks.

    Harddrives don't work nicely with the TV? You mean those machines with three particle accelerators?

  15. Re:Telco, telegraph, computer, and deejay... on Was Thomas Edison Right about DC Power? · · Score: 1

    48 volts is about the highest you want to go with batteries. Any higher and you will run into problems with leakage on the plastic top of batteries to the case if they aren't clean. I work with forklift batteries and they will start to burn and melt if the seeping electrolyte catches enough dust on the top. Battery fires are bad news. 48 volts also happens to be about the the point you will feel a slight tingling when your hands are wet.

    I wouldn't skip the inverters and isolation when you start transmitting power over distances. When you have power in a remote location, voltage drops start to add current in unlikely locations. If a bus bar gets loose in one room, a fire could start in another. Don't let the neutral, or grounding get complicated.

  16. What is education on Linux vs. Windows for Schools? · · Score: 3, Insightful

    Is it more educational to buy a packaged education or take a classroom and create a learning environment? The best way to learn is to create the tools of learning rather than memorizing facts or being shown movies or games all day. Tell them they are smart, get them involved and make the system that will teach more generations. Turn them into leaders of the future, not followers of the past generations.

  17. Re:This is old news. on Pen-Sized Color Scanner Reviewed · · Score: 2, Interesting

    It is possible that it's just too new, so it isn't ready for market yet-

    or the dozen or so patents haven't expired yet for a community to develop and release an improved version without bugs.

  18. Re:what's on Web 3.0 · · Score: 1

    ipv6?

  19. Re:.biz, .info, .museum, .aero - phase out? on Vint Cerf Answering Questions on Top-Level Domains · · Score: 1

    Yes, no one types in

    www.google.info
    www.wikipedia.info

    but they are registered!

  20. Re:ThinkGeek on In Search of Compact Keyboard That Doesn't Suck? · · Score: 1

    Its a keyboard with 25 letters. Do gamers use a different alphabet that common folk?

  21. Re:Unless you use python on Fedora Core 5 includes Mono · · Score: 1, Funny

    I remember when I could run Gentoo happily on my P120 with 32MB of RAM. Not any more! Its now so slow on my 3GHz system and I'm looking for a faster source based distribution. I hate to say it, but FreeBSD is starting to look good.

  22. Re:Great. Yet another thing that can go wrong.. on Corsair Demos Easy Watercooling PC Rig · · Score: 1

    I seem to remember the VW bugs in our family growing up. Cold as hell in the wintertime, but they never seemed to break down. Routine maintenance goes a long way.

    Common sense never goes unpunished. People ALWAYS get more respect finding 5% more gains out of the most power hungry machines. Well, with electric cars and RISC chips being commodity items these days, there might be a day when we don't have to deal with radiators in our computers OR in our cars. And they look at us funny...

    There's a growing movement to optimize and find minimalist designs, not just for saving power, but for the reliability reasons you mention. My ARM computer draws 1/100th the power of my desktop, but seems much faster. Why? Because time was invested to clean the whole system.

    And do we really need all that power driving the backlight on the LCD display? It was kind of bright at the lowest setting. There's another mod I don't hear about...

    Just to think I could have wasted my time on a huge heatsink for minimal gains and suffer more points on my 8 cents/kilowatt hour bill every month.

  23. Re:Not suprised on Of Internet Users, Only 4% Knowingly Use RSS · · Score: 1

    RSS, XML, CSS...

    I guess people weren't happy with delivering basic information through html, email, ytalk, finger, and usenet news.

  24. Re:Hmmmm.... on RIAA Bullies Witnesses Into Perjury · · Score: 1

    RIAA representatives would not comment on what type of hot sauce they prefer when they eat babies.

  25. Re:Cable upstream capacity on Does Faster Broadband Matter? · · Score: 1

    Assignment of frequencies for cable video is a matter of federal regulation.

    Please tell me you're joking. The FCC tells the cable company what they can do with what's inside their cable? Its private communication, not public airwaves, so I don't see how this would be the FCC's jurisdiction.