Helmust Goebkes magnet motor

[hartiberlin]

I had called Mr. Goebkes regarding this motor
back in 1999 and he told me several times, that the
motor did really work and only due to eddy currents
it did discharge the neodym magnets.

He sounded very sincere and if you make the basic experiment,
he is right, that with the right amount of iron you can have a changing
force, if you move a runner magnet horizontally from the iron part to
the position , where the stator magnet is behind the iron.
The force is then changing from attraction to repellation.

The axis of this motor must then be directly  at the neutral zone,
so the lower part attracts  the rotor and the upper zone
repells the rotor.
You have to finetune only the iron (plate and solid ) thickness
to get the desired forces.

It is much easier to fine tune than a SMOT or the recent Nikolatesla-backwards OC motor ( if this
is not a fake...!?)

Mr. Goebkes was very busy with his shop-job at this time and had
spent a fortune for the magnets at that time, so
did not want to repeat this and he did not know
about eddy currents at this time, so he was clueless
what else to try...

But with nonconducting ferrite magnets this design should
not discharge the magnets.

[BEP]

Suggestion for those worrying about guessing how much iron and magnet in the middle:

Start with what you can get and in the beginning use a solenoid coil with core for the middle magnet. Then you can adjust power to that solenoid (DC ONLY) and get a feel for how much iron and magnet are needed.
Don't let the coil flux bleed out onto the other parts!

[Low-Q]

Hi!

I can hardly believe this machine did work, but as Stefan says, the magnets did degauss during the operation.
What I then are thinking about is that is must be a quite much degauss in a short time to rotate the wheel.

I believe this is a hoax. I believe this motor can't work, because:
The magnets will allways be stucked in the most atractive part of the stator-iron part. The number of magnets in the rotor makes it going smoother, but there is no force whatsoever that is turning this magnetwheel.

In the explanation, the magnets will be attracted to the lowest iron piece, but are neutralized when approaching the statormagnet. The neutralized area is less attractive than the iron area longer down. So each magnet are therfor repelled backwards away from this area and forced to rest somewhere earlier in the iron part.

I have also simulated the device in FEMM. Moved the statormagnet up and down, to left and right, and adjusted the iron thickness so each magnet finally meets a neutralized area where it supposed to be in the drawing. I ran 150 samples in 15 degree rotation (The magnets are placed with 15 degree space). All I can find is an average torque of absolute 0.

If there is a picture of this device, so it's easier to calculate magnetsize, shapes of iron parts etc. it could be possible to simulate this more accurate.

However, the same excuse are rising every time someone claims a working magnet motor. The magnets get worned out, its impossible to rebuilt it due to its complexity. And ofcourse, the video camera have no batteries, or don't work, or the engineer don't know how to use his computer in order to post a video on internet. etc. Maybe a magpie was stealing all the shiny neo-magnets.

I'm for sure a sceptic, but never mind my posts - I'm just very tired of all excuses

Vidar

[NerzhDishual]

Hi people,

About Magnet 'Motors'
May I quote my own message which was posted on another thread ?

Hi sharp & accurate (N)PMM builders and freaks!

Sorry for disturbing, just my 2c :

Are all these  N?PMM a matter of magic, serendipity, chance, patience or else? Are they reserved for PK (psychokinesis) gifted individuals?

A 83 years old retired engineer friend of mine has recently designed a self  starting and self running (unfortunately  for just a little while =/= 3/4 hour )  permanent magnet device. He insist that this thing must be very very accurately tuned (less than one milmeter). After that time you have to replace this ring shaped ferrite microwave oven magnet.

BTW: I have been told that ferrite and 'neo' magnets were not 'friends' and that you must mot mingle them. was I been told right?

I have shown his very device. Guess what? He was not able to get it running! Anyway, I trust him.

A couple of years ago I purchased a LEVITRON. Me and my son were also not able to have it turning! However this LEVITRON is now an 'official' device. Of course we could be morons. 
I offered this (useless) LEVITRON my aged friend.



Best

   

[BEP]

About ferrites and Neos not being friends:

Just my opinion>
I think it is just the neos that are not friendly. They are stronger but do not retain polarization as well as ceramics. They are usually coated with a conductive plating that allows Eddy currents to take shape and flow. They are also conductive inside. When flow starts any possible rotation energy just pushes the now movable electrons and the rotor winds down.
Heat is just as mysterious as magnetism. The Curie point may be reached during Eddy current flow then your magnets are just slugs.

I suppose if the magnets don't weaken then you can give it another spin. IMHO any moving magnet should be ceramic and non-conductive. Otherwise it will probably just stop working at some point.

BTW:

Folks that post intelligent reasoning - even if it is negative - are not considered knuckle-whackers in my book