[Vo]:Bedini motors
I don't know why some of these are called Bedini motors. These methods of motor commutation have been around for decades. http://www.youtube.com/watch?v=iTG2U8e6Mdo http://www.youtube.com/watch?v=byLzUbTjhm0feature=related http://www.youtube.com/watch?v=YsobVuzUSiEfeature=related http://www.youtube.com/watch?v=m1WkxHr0G6oNR=1 http://www.youtube.com/watch?v=_3mWUMXkSI0NR=1 http://www.youtube.com/watch?v=V1oFzXOZnE8feature=related http://www.youtube.com/watch?v=qYttVWyVb38feature=related http://www.youtube.com/watch?v=Q1bdG6ljz8ANR=1 http://www.youtube.com/watch?v=lipq96gLtB0feature=related http://www.youtube.com/watch?v=rPB1sSh7yWwfeature=related http://www.youtube.com/watch?v=rPB1sSh7yWwfeature=related And here's one with Bedini and Newman in the same title! http://www.youtube.com/watch?v=OozrZssXSX8feature=related Best regards, Horace Heffner http://www.mtaonline.net/~hheffner/
Re: [Vo]:Bedini motors
We built and tested the bicycle wheel pulsed motor using four NdFeBo magnets on the wheel and a single stationary coil. I wanted to do this since I had never seen anyone actually measure the torque of a Bedini motor. They always use one coil to pulse the wheel and another for a pickup to charge a second battery. The best COP we were able to obtain was about 0.24. Terry On Fri, Jun 26, 2009 at 11:24 AM, Horace Heffnerhheff...@mtaonline.net wrote: I don't know why some of these are called Bedini motors. These methods of motor commutation have been around for decades. http://www.youtube.com/watch?v=iTG2U8e6Mdo http://www.youtube.com/watch?v=byLzUbTjhm0feature=related http://www.youtube.com/watch?v=YsobVuzUSiEfeature=related http://www.youtube.com/watch?v=m1WkxHr0G6oNR=1 http://www.youtube.com/watch?v=_3mWUMXkSI0NR=1 http://www.youtube.com/watch?v=V1oFzXOZnE8feature=related http://www.youtube.com/watch?v=qYttVWyVb38feature=related http://www.youtube.com/watch?v=Q1bdG6ljz8ANR=1 http://www.youtube.com/watch?v=lipq96gLtB0feature=related http://www.youtube.com/watch?v=rPB1sSh7yWwfeature=related http://www.youtube.com/watch?v=rPB1sSh7yWwfeature=related And here's one with Bedini and Newman in the same title! http://www.youtube.com/watch?v=OozrZssXSX8feature=related Best regards, Horace Heffner http://www.mtaonline.net/~hheffner/
Re: [Vo]:Bedini motors
Terry Blanton wrote: We built and tested the bicycle wheel pulsed motor using four NdFeBo magnets on the wheel and a single stationary coil. I wanted to do this since I had never seen anyone actually measure the torque of a Bedini motor. . . . The best COP we were able to obtain was about 0.24. How did you measure torque -- or mechanical energy I assume. The only way to measure torque I know is to stop the machine, which would affect its performance obviously. I assume this means for 1 W of input it produced 0.24 W of mechanical energy, ignoring losses to friction, resistance electrical heating and so on. If it was an extraordinarily inefficient motor it might conceivably be over-unity anyway, with the rest coming out as waste heat. You could only tell by stuffing it into a calorimeter. That situation would be somewhat similar to the older models of Roger Stringham's ultrasound gadgets. They had a large, complex power supply outside the calorimeter, which supposedly delivered a certain amount of power to the device inside the calorimeter. It would be over unity if actual delivered power is estimated correctly, or not if it isn't. The later models had miniature power supplies that fit into the calorimeter. I do not know if they ever produced convincing excess heat. Back when Gene Mallove was trying to replicate this device I was unimpressed with Stringham's calorimetry. I have not looked closely at it since then. - Jed
Re: [Vo]:Bedini motors
Using the DR-2112: http://www.lorenz-messtechnik.de/english/products/torque_rotating_contactless.php we measure it directly. Mechanical energy generated per cycle is simply T Nm x 2 pi radians = Joules output. Electrical energy is measured using a digital scope to generate CSV files for V I vs T at 10k samples per sec. We calculate power using Excel to integrate and multiply. Multiply times the time the pulse is on per cycle to get Joules (Watt-seconds) input. We have a 2 Nm version and a 100 Nm version of the Torque Sensor. Really nice piece of work it is. We have verified these measurements using DeProny brakes and also by lifting weights. Lifting weights is a really kewl way of measuring mechanical energy. We used a bucket with sand so that we could precisely choose the amount of mass. g Terry On Fri, Jun 26, 2009 at 1:19 PM, Jed Rothwelljedrothw...@gmail.com wrote: Terry Blanton wrote: We built and tested the bicycle wheel pulsed motor using four NdFeBo magnets on the wheel and a single stationary coil. I wanted to do this since I had never seen anyone actually measure the torque of a Bedini motor. . . . The best COP we were able to obtain was about 0.24. How did you measure torque -- or mechanical energy I assume. The only way to measure torque I know is to stop the machine, which would affect its performance obviously. I assume this means for 1 W of input it produced 0.24 W of mechanical energy, ignoring losses to friction, resistance electrical heating and so on. If it was an extraordinarily inefficient motor it might conceivably be over-unity anyway, with the rest coming out as waste heat. You could only tell by stuffing it into a calorimeter. That situation would be somewhat similar to the older models of Roger Stringham's ultrasound gadgets. They had a large, complex power supply outside the calorimeter, which supposedly delivered a certain amount of power to the device inside the calorimeter. It would be over unity if actual delivered power is estimated correctly, or not if it isn't. The later models had miniature power supplies that fit into the calorimeter. I do not know if they ever produced convincing excess heat. Back when Gene Mallove was trying to replicate this device I was unimpressed with Stringham's calorimetry. I have not looked closely at it since then. - Jed
Re: [Vo]:Bedini motors
On Jun 26, 2009, at 9:19 AM, Jed Rothwell wrote: Terry Blanton wrote: We built and tested the bicycle wheel pulsed motor using four NdFeBo magnets on the wheel and a single stationary coil. I wanted to do this since I had never seen anyone actually measure the torque of a Bedini motor. . . . The best COP we were able to obtain was about 0.24. How did you measure torque -- or mechanical energy I assume. The only way to measure torque I know is to stop the machine, which would affect its performance obviously. Torque can be measured dynamically using strain gauges, electronic scales, etc. However, true Bedini motors have a third coil that is used to recover magnetic field energy and charge a battery as the motor runs. Torque is not the point. One battery runs the motor while another battery is charged, and then the batteries can be exchanged in function. COP can be measured by measuring the amp hours of charge on the charging battery vs amp hours of discharge on the primary battery. This is really nothing new - no matter who's name is attached, because it is just a gazillion ways to build an integrated motor-generator. This is one area that has been and apparently continues to be intensively explored (to put it lightly) by amateurs. There is no reason to expect over unity performance that I have seen. Still, it is neat to see so many people doing hands on technical things. If something cool actually develops there will be an army of amateurs ready to pounce on it. Best regards, Horace Heffner http://www.mtaonline.net/~hheffner/
Re: [Vo]:Bedini motors
Terry Blanton wrote: Using the DR-2112: http://www.lorenz-messtechnik.de/english/products/torque_rotating_contactless.php we measure it directly. Ah. So this is a miniature dynamometer. I guess it acts as a brake slowing the thing down to some extent while measuring RPMs. The big dynamometers I have seen work that way. I have an indoor bicycle trainer which is supposedly very stable and accurate, calibrated by the factory. It has fluid that produces variable resistance increasing with speed, mimicking the effect of a headwind. A speedometer on the bicycle monitors RPMs and displays speed, distance and watts. I guess that would be a dynamometer of sorts. - Jed
Re: [Vo]:Bedini motors
It has a strain gauge on the rotor and the distortion of the rotor under load is transmitted via an ingenious system of digitizers and transformers. This is translated into a 5 VDC (max) signal proportional to the torque. You can feed it into one of the digital scope channels and display the dynamic torque in addition to the V I input pulse information. Damned thing has a microprocessor inside. Not cheap, tho. Terry On Fri, Jun 26, 2009 at 2:32 PM, Jed Rothwelljedrothw...@gmail.com wrote: Terry Blanton wrote: Using the DR-2112: http://www.lorenz-messtechnik.de/english/products/torque_rotating_contactless.php we measure it directly. Ah. So this is a miniature dynamometer. I guess it acts as a brake slowing the thing down to some extent while measuring RPMs. The big dynamometers I have seen work that way. I have an indoor bicycle trainer which is supposedly very stable and accurate, calibrated by the factory. It has fluid that produces variable resistance increasing with speed, mimicking the effect of a headwind. A speedometer on the bicycle monitors RPMs and displays speed, distance and watts. I guess that would be a dynamometer of sorts. - Jed
Re: [Vo]:Bedini motors
Yes, overunity.com has thousands of such people. Terry On Fri, Jun 26, 2009 at 2:14 PM, Horace Heffnerhheff...@mtaonline.net wrote: On Jun 26, 2009, at 9:19 AM, Jed Rothwell wrote: Terry Blanton wrote: We built and tested the bicycle wheel pulsed motor using four NdFeBo magnets on the wheel and a single stationary coil. I wanted to do this since I had never seen anyone actually measure the torque of a Bedini motor. . . . The best COP we were able to obtain was about 0.24. How did you measure torque -- or mechanical energy I assume. The only way to measure torque I know is to stop the machine, which would affect its performance obviously. Torque can be measured dynamically using strain gauges, electronic scales, etc. However, true Bedini motors have a third coil that is used to recover magnetic field energy and charge a battery as the motor runs. Torque is not the point. One battery runs the motor while another battery is charged, and then the batteries can be exchanged in function. COP can be measured by measuring the amp hours of charge on the charging battery vs amp hours of discharge on the primary battery. This is really nothing new - no matter who's name is attached, because it is just a gazillion ways to build an integrated motor-generator. This is one area that has been and apparently continues to be intensively explored (to put it lightly) by amateurs. There is no reason to expect over unity performance that I have seen. Still, it is neat to see so many people doing hands on technical things. If something cool actually develops there will be an army of amateurs ready to pounce on it. Best regards, Horace Heffner http://www.mtaonline.net/~hheffner/
Re: [Vo]:Bedini motors
On Fri, 26 Jun 2009, Terry Blanton wrote: Yes, overunity.com has thousands of such people. In 1995, if you wanted to trigger a contemporary Amateur Science revolution, you'd have the brilliant idea to perform a simple test: start a website for amateur science, and another one for crackpot physics. Let school kids find both. Injected so early in www exponential growth, could this have any significant impact? And, would the two virii compete for resources (would more people be interested in Scientific American project articles? Or in antigravity machines which never actually work?) After some years you'd see evidence for which tactic was the more effective: FE/Antigravity resembles less a meme than a conflageration which threatens to consume the entire online hobbyist community. Scientific American cancels The Amateur Scientist Oops. I hope all of that was going to happen anyway. I miss SciAm TAS. (( ( ( ( ((O)) ) ) ) ))) William J. BeatySCIENCE HOBBYIST website billb at amasci com http://amasci.com EE/programmer/sci-exhibits amateur science, hobby projects, sci fair Seattle, WA 206-762-3818unusual phenomena, tesla coils, weird sci
