----- Original Message ----- From: Horace Heffner <[email protected]> Date: Sunday, June 28, 2009 6:15 pm Subject: Re: [Vo]:vortex balls!
> > On Jun 28, 2009, at 1:38 PM, Harry Veeder wrote: > > > > > > > ----- Original Message ----- > > From: Horace Heffner <[email protected]> > > Date: Sunday, June 28, 2009 12:30 pm > > Subject: Re: [Vo]:vortex balls! > > > >> I've updated: > >> > >> http://www.mtaonline.net/~hheffner/HullMotor.pdf > >> > >> to add: "Regarding Fig. 5, a strategy to improve conductivity and > >> yet > >> retain some of the effective flux is to construct the driver disk > >> using a thin copper disk sandwiched between two iron disks. A > >> further improvement would consist of cutting fine radial groves in > >> the outer portion of the central copper disk in order to keep the > >> radial current tightly confined geometrically. It is possible to > >> construct both the brush disk and active disk in an identical > >> manner, > >> and thus obtain two active disks. The control experiment then > >> consists of replacing the iron disks with copper disks." > >> > >> Best regards, > >> > >> Horace Heffner > >> http://www.mtaonline.net/~hheffner/ > >> > > > > I wonder if it would work if the ends of the shaft were connected > > > to the > > leads with brushes, instead of connecting the leads to the bearings. > > > > Harry > > > If you look at Fig. 5 in the above pdf you will see the brushes > are > connected to the shaft and not the ball bearings. This takes ball > bearings out of the picture entirely. Ahh I see. I wasn't sure. > Mercury or some other liquid > > conductor might be used in place of brushes, provided the shaft in > Fig. 5 is made vertical, and the end of the shaft dipped in the > mercury or other liquid conductor to form the "brush". > > Using just brushes on the circumference of the shaft, instead of > connecting the power to the bearings, should work somewhat > provided > the shaft is magnetic, and the brushes closely approximate a point. Using a magnetic shaft might disrupt the effect, but I am only guessing. > The problem with brushes in any case is friction. Perhaps graphite > > lubricant could help, and provide more of an arc-like contact, at > least briefly. One problem with using the shaft directly is that > the > radial path L of the current i is thereby minimized, so the i L x M > > force is minimized. That's why I suggest the use of the > comparatively thin wheel conduction path augmented by sectioning. > A > solid steel shaft should work better than a hollow shaft, and a > large > diameter solid shaft should work better than a small diameter shaft > > for that direct contact with the shaft approach. > How about if the leads were connected to the ends of a fixed shaft and let the outer racers rotate instead? That would eliminate the brush friction. Harry
