This video shows the 26+5/8″ diameter 3/4″ birch plywood flywheel ring which has been attached to the bike wheel, and a spin test is performed with the stator at full height above the rotor. The flywheel has some runout that throws the wheel off balance, which of course is a negative aspect that needs to be addressed. Also, the 3+3/4 pound additional weight will cause further drag on the bearings, which are already in rough shape. Thus, I perform this test spin not knowing if these negatives can be overcome by the magnetic forces of attraction and repulsion, and whatever amount of inertial momentum that can be provided by the flywheel. Does it work? Watch and see…….
Duration : 0:9:59
[youtube Cy0QLgYuraY]
Are you sure you …
Are you sure you are commenting on the right video? There is no DC current being used here, and no steel pipe either.
thats great, put …
thats great, put the DC + /- on the steel pipe on 0:02 and see what happens, you will be surprised at the speed of spinning.
Your mechanical …
Your mechanical movement of the stator arm design more or less is same with this video , the oni difference is applly on small CD rotor version watch?v=gogl_lm_n0A
You should be able …
You should be able to order the bar magnets online from K&J Magnetics. They are part # BC62. The HD magnet for the stator can be salvaged from a scrapped computer found at your local recycling center. Older computers have the best ones – larger and more powerful, and they are easily removed from the hard drive. Look for ones that are 1/4″ in thickness, as I am using. The newer ones are mostly all 1/8″ thick. If need be, you can use a thin one and attach a double stack BC62 at each end.
yes a linear …
yes a linear bearing would handling the lateral movement.
A straight line …
A straight line movement, on a horizontal plane, avoids those 2 problems. I also want to do this without the drag effect that use of a spring would bring into play. The other critical factor will be using a very lightweight track riding/stator carriage, wherein 90% or more of the weight being shifted will be comprised by the weight of the stator magnet. The new stator carriage will look nothing like the bulky arm that I have been demonstrating. That was only for preliminary testing, R&D.
I considered …
I considered several different methods for achieving movement, including the method you describe, but my first tracking test will be done while moving the stator in a straight line back and forth across the wheel rim at a constant height above the rotor magnets. It is important to maintain the height, and this isn’t possible if using a pendulum unless the rotor surface and magnets are concave. Also, with a pendulum, it requires lifting the weight of the stator magnet as the arc moves upwards.
Rick, unfortunately …
Rick, unfortunately I am in Costa Rica and do not have access to the magnets here. I will try find some electric motors that I can salvage some parts. But until then I am just a cheerleader for you and the replicators.
Hi Gauss, glad to …
Hi Gauss, glad to see some people are thinking relevantly and offering ideas that do have merit. Already, several replicators have completed the basic apparatus build, so this will allow us to each try out similar but differing methods of achieving the movement that is desired. Love to have you join in the fun – are you willing to build this device? If so, e-mail me and I’ll see that you receive the complete plans.
Try use you …
Try use you flywheel as the cam to push you stator in and out. Probably be better if the stator was hanging above the rotor on a needle bearing as a pendulum. and light weight return spring and a stop block.
Hi o.t.c.e., and …
Hi o.t.c.e., and thanks for your comment. I understand superconductor technology, but I think you are missing the point of this project. My aim is not to use cutting edge scientific methods, and expensive and difficult to obtain materials and supplies that are best suited to well equipped laboratory researchers. This project is all about using proven techniques that can be inexpensively and safely replicated by anyone having just basic skills and a few common tools.
You have to use a …
You have to use a superconductive stator, the stator sits in a bath of liquid nitrogen, when the magnets on the rotor begin to spin they will induce a current into the superconductor(S/C) that will react back to the magnets causing them to self perpetuate, the current in the S/C will build up to the point that the rotor would continue to rotate so long as inductance occurs in the S/C. there are also ultra-conductive polymers that are superconductive at room temp.