Singer Confidence Quilter 7469Q Sewing MachineComplete info at amasci.com EM repulsion lifts a neodymium magnet above two spinning copper pipes. Also see www.youtube.com I bought my supermagnets from Mr. George supermagnetman.net also from http This demonstrates one type of Maglev train, the kind lifted by induced current repulsion in a conductive track. Only usually the track stays still and the magnets move fast. It’s related to superconductor levitation, but done with high speed motion. The pipes are several pounds each, thick-walled “schedule-80″ copper from the scrap bin at Alaskan Copper and Brass in Seattle. Shaft pins were cryo-fit and turned on a lathe to mate with 1″ ballbearing races. The motor is an AC/DC replacement 5000rpm sewing machine motor from WW Grainger catalog. Speed control is a 1000-watt triac lamp dimmer. . Lots more stuff at SCIENCE HOBBYIST amasci.com . Note: trolls/spammers blocked immediately, zero tolerance
Articles tagged with: Levitation
Written By: on January 12, 2010
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fast movements. The tubes are several pounds of thick-walled, "schedule-80" copper from the scrap bin at Alaskan Copper and Brass in Seattle. Shaft Pins were cryo-fit mate and turned on a lathe with 1 "ball bearing races. The motor is an AC / DC Replacement 5000rpm sewing machine motor from WW Grainger catalog. Speed control is a 1000-watt triac lamp dimmer. NOTE: trolls / spammers immediately close the zero-tolerance … Science amasci Physics Maglev magnetic levitation neodymium super magnets …
Cheap SINGER 7469Q for Sale (Top 10)
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Top #1 Brother XL-3750 Convertible Free-Arm Sewing Machine with Quilting FeaturesOverall Rating (8/10) |
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| Review by Roxana C (USA) 2010-07-20 A seemingly small problem, but makes the machine useless. The upper thread tension wheel does not work, as a few other reviewers have also pointed out. I have tried all settings and all stitches, and I have the same problem. I have just unpacked the machine, and I was just testing the stitches up and down a simple muslin material. It worked nicely ... Read more Brother XL-3750 Convertible reviews | ||
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Top #2 Singer 7442 Electronic Sewing MachineOverall Rating (8/10) |
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| Review by Lanae (PA) 2010-04-08 I USED to enjoy my Singer 7442 I got at Walmart a year ago, but ever since the LED light bulb went out, I've changed my mind. The machine light is SUPPOSED to last for 100,000 HOURS, however, mine didn't. I emailed the company only to get the reply that I needed to take the machine to a repair center and perhaps, the repair "assembly repair/replace... Read more Singer 7442 Electronic reviews | ||
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Top #3 Distinctive Narrow Rolled Hem Sewing Machine Presser Foot - FitsOverall Rating (8/10) |
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| Review by J. Kirby (Mountain States) 2010-03-25 Yay! These are a little hard to find retail. It fits and works great on my Brother SR-65 machine. Plus, it was delivered with AMAZING speed!! I had a project waiting on the delivery and it was even faster than I would have dared hope!... Read more Distinctive Narrow Rolled reviews | ||
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Top #4 Brother CS6000I 60-Stitch Computerized Free-Arm Sewing Machine with Multiple StitchOverall Rating (8/10) |
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| Review by Kay (USA) 2010-07-25 My sister in law had just purchased this machine when I came to visit .I was so impressed by it that when I returned home, I immediately went on line and purchased one for myself. I purchased this machine as a secondary sewing machine that would be lighter to carry back and forth to quilting classes and have all the great functions that I needed t... Read more Brother CS6000I 60-Stitch reviews | ||
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Top #5 Brother XL2600I 25-Stitch Free-Arm Sewing Machine with Multiple Stitch FunctionsOverall Rating (8/10) |
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| Review by OMEGA7NYC (Long Island, NY) 2010-07-09 I bought the machine after going thru the manual worked out the kinks to get familiar what does what. Im no sewing expert but a novice! The only problem I had was with the threading of the bobby cylinder pin. The first time I had the wrong tension on the dial to the left zero thru 9. So when I loaded the bobby with like a number low n... Read more Brother XL2600I 25-Stitch reviews | ||
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Top #6 Brother LS2125I 10-Stitch Free-Arm Sewing Machine with Automatic 4-Step ButtonholerOverall Rating (8/10) |
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| Review by Sonia P. Gaither (Nashville, TN) 2010-07-22 First I want to say this: this is a very beginner machine. If you want to learn to sew, this is great. It's very easy to understand. It's a good little machine. I had mine for almost 2 years before I upgraded to a janome and became a better sewist. I've had zero problems with mine. It's a bit noisy, and you need a mat under it, so it doesn't shake ... Read more Brother LS2125I 10-Stitch reviews | ||
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Top #7 Distinctive Ruffler Sewing Machine Presser Foot - Fits All LowOverall Rating (8/10) |
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| Review by A. Pace (UT, USA) 2010-03-25 I have a brother XR-46 sewing machine, and this foot worked great with it. I also tried it on my friend's machine and it worked well with hers too. As long as you have a low-shank machine this foot will work for you. (If you take off your presser foot and there is still a long shank left in place, you have a low shank machine.) Ruffl... Read more Distinctive Ruffler Sewing reviews | ||
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Top #8 Distinctive Free-Motion Darning Quilting Sewing Machine Presser Foot - FitsOverall Rating (8/10) |
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| Review by C. Carter (USA) 2010-04-15 I had never done free-motion quilting before I bought this. It was super easy to attach to my Brother sewing machine. It took me a little bit of practice to get the hang of it (I did stipple quilting on a baby quilt) but it wasn't that hard. It did make a squeaking noise while I sewed. I'm not sure if it was my machine or the foot. I recommend gett... Read more Distinctive Free-Motion Darning reviews | ||
