< RPMM > Repulsive Permanent Magnet Motor The RPMM is a powerful motor once built. The technique involved requires extreme patience. If one is not completely serious or gives up easily on a project, this one is not for you. It is said that magnets will heat up and lose their gauss rating if one could be built in the repulsive mode. They have never built one.. how do they know? Speculative thinking doesn’t provide the truth. Cheap Radio Shack magnets do over time lose their gauss rating, but they are cheap and excellent to experiment with to build a motor, then buy the expensive ones to finish the motor. A motor built with high-grade magnets in the repulsive mode will last for years. If they only lasted for 5 years, how much work have you acquired from them? I have (2) motors built in the repulsive mode and one of them has been running for 1 and a half years. The other was built at a later date and is still running. Plus.. they DO NOT heat up… this is a myth. I do not expect the reader to believe me. I have had plenty of emails that confirm this. I just delete them and keep moving forward, they never hear back from me again. But there are a few that will be willing to try, and those are the ones that will get help. I ask for nothing but a good strong effort for those that believe that it can be done. First we must build a balanced wheel of at least 36" in diameter. Make it as light as possible with good bearings. 36" is the easiest motor to begin with. Smaller wheels can be used, but until all the flux variations are understood, this is where you need to be. To build this design you must understand WHAT you are trying to achieve. The wheel is balanced, but the magnetic flux or forces must be unbalanced in one direction of the wheel when a primary magnet is brought in a close proximity to the wheel. PLEASE RE-READ THAT. Flux is static, so the wheel must be magnetically unbalanced so that it can never remain in one place when a primary magnet is in its region. The trick is getting it to do so in ONE direction only. One must place the magnets in a angled position mounted around the wheel for 180 degrees. This whole configuration must be cocked to one side of the wheel. When one looks at the wheel one side of the magnets are in toward the centre 3". When you have achieved this, placing the primary magnet next to the wheel will cause it to rock one direction and then the other. Build a Plexiglas box about 15" long and about 4" wide. Put some metal filings in the box and hold it about and around the wheel. Your flux field must form a perfect arc for 180 degrees. If not, reposition your magnets. Not around the wheel... but the magnets. When this is done, test with the primary magnet, it will bounce some. Now place a magnet behind the row of 180 degree magnets and get the wheel to move in the direction of the 3" inset to the closest magnets on the wheel. The magnets you will place at various locations behind the row of 180 degree magnets will determine the fixed direction of the wheel without bouncing back and forth. You will get the wheel to be unbalanced magnetically in one direction. Still using your Plexiglas box to make sure the magnetic arc is not destroyed in the process. Magnetic viewing material will not do here. You HAVE to see the extension of the flux fields. This design is very hard to explain in the building of it. It is a very complicated trial and error build. But to see it work is worth all the effort put into it. Give it a try. Robert H. Calloway