Russian magnet motor

[Omnibus]

Anatoliy, say it in Russian and I'll translate it.

[hartiberlin]

@Omnibus:
Maybe you can translate some important infos from his homepage ?

@Antoly:
What is still missing ? Better magnets ?

[Omnibus]

Stefan, let me try. What passages do you want me to translate?

[hartiberlin]

As I can?t read Russian language, I don?t understand, what is written at all on
ALL his pages, I can only look into the graphics.

The principle is clear to me, the question still is, if he has magnet problems,
maybe he did not yet get Neodym magnets or if there are still mechanical problems
or what else he has tried so far... Many thanks.

[Omnibus]

Stefan, here is a rough translation of the text in http://kalininaa.narod.ru/manufact.html :

DESCRIPTION OF MAKING THE MOTOR

At the beginning some inexpensive and handy details were used: rings ferrite magnets from acoustic systems, some kind of old equipment. The rest of the details were ordered from machine shops or I made them myself. The Piston and the cylinder were made of caprolone.

However, these materials didn?t provide the expected effect: friction between them turned out to be significant. The screen was made of steel. It moves on bearings. At this moment the motor is made of machine made details which I ordered and they have the required quality.

I made measurements on the exit shaft (#5 on the schematic) and the resistance for the movement of the shade (#12 on the schematic) of the manufactured model of the motor. Using MathCAD I calculated the work of the shaft and the work necessary to move the shade. Integrals of the function of the given sections allowed to calculate the work of the magnets and the work for moving of the shade. Various values of the work were obtained depending on the different ways of placing the magnets. Therefore, I only present the values from the one particular way which I chose to work with.

Work on the motor shaft is 2,022 J.

РабоÃ'‚а на пеÃ'â,¬ÃÂµÃÂ¼ÃÂµÃ'‰ÐµÐ½Ð¸Ðµ заÃ'Ð»Ð¾Ð½ÐºÐ¸ 1,195 J.

Work for moving the shade is 1,195 J.

Work gain is not great but it is enough for the motor to get going.

Measurements are taken from a model with all resistances accounted for.

The usual setup doesn?t work and it was necessary to choose the magnetic system. At this moment it has been found and its workability has been proven. Measurements were not only made in static state but also when all elements were in motion accounting for the inertia and the resistance.
A working motor is not available because of lack of funds for its further manufacturing and, unfortunately, it can only continue in half a year. What remains is to make the lever for the movement of the shade, rotating push mechanism and the mechanism for shifting of the shade. In general, what remains is not much but it requires manufacturing exactness since the inaccuracies and gaps do not allow for the proper coordination of the shade and the shaft.

If there is someone from St. Petersburg who would be interested I would demonstrate these results and we could finish the manufacturing of the motor together.

The latest modification which I now am working on is shown in Fig. 6.

This page is unfinished and as the work progresses it will be supplemented.

Addition from 26 January 2006.

At this moment significant changes in the construction of the motor have occurred.ДополнениÃ' 26 Ã'Ð½Ð²Ð°Ã'â,¬Ã' 2006 г. There are videos with results from trials and work of an almost ready motor. It is seen quite well in the video how the force of magnet repulsion turns the shaft while at the same time opening the shade. Video is available for those who would be interested in it.

RECOMMENDATIONS ON MANUFACTURING

The practical effect of the magnetic field turned out to be quite an important feature in manufacturing. It was found that the shade must be sufficiently large so that less of its sides cross the magnetic field. (see Fig. 3). Best if it is on, that is, the one which covers the magnets. The form of the bounds is best to match the form of the magnet. My shade is rectangular.
I found a practical solution for overcoming the attracting force of the upper magnet field. It is necessary to increase the sirface area of the magnet so that the shade will always be in the magnetic field when it moves. The simplest is to place one more magnet in the path of shifting the shade, which I actually did in my model.

Resistance to shifting (F) became negligible and close to the theoretical:

F = f*N

where f  is the coefficient of friction of motion (0,02), N is the force of interaction of the magnetic field H. Since I do not have at this moment a strong magnet with the necessary dimensions I decided to use an electromagnet. It is necessary just to create a strong magnetic field which afterwards will be formed by a permanent magnet. When studying the available magnets I found some manufacturers and the prices of super strong magnets. Therefore, if a need arises all of it can be ordered. In making an analogy with an internal combustion engine (ICE) it is possible to calculate the characteristics and price of the magnetic motor in advance.

In the picture it is seen that the turning push shaft has not been fixed to the axis but is only affixed with the help of a tube and this is done just to tune it up at the beginning. The axis with the push shaft will be replaced with a sturdier construction. For less powerful models it is necessary to decrease the rotations of the shaft via a flywheel so that the forces of inertia from the shade shift wouldn?t cause a strong friction.

The optimum is to have a large pass of the piston and lower rotations so that less energy is spent for the overcoming of the inertia of the shade and avoid the formation of eddy currents.
The shade has to be made of transformer steel to avoid its magnetization. It is necessary to take into account the electric current in the shade and rest of the ferromagnetic details appearing due to the changing magnetic field
Preliminary calculations show that the motor of 1 kW would cost around $400. These calculations are based on the real price of the magnets and the details from manufacturers.