Example crop circle
Starting point of these conciderations to rotor-technology were investigations to phenomena, discovered by an huge amount of experiments by Felix Würth, an inventor and fried of mine. Workouts and suggestions for improvements to Würth-Schwung-Systeme, are available as download files with texts and drawings, however but in German language. Already at this time (1998) I suggested, but excentric masses at asymmetrical tracks by separated input- and output-devices might bring over-unit effects.

On the other hand, I was deeply impressed by crop circle picture ´Threefold-halfmoon´ and I always did believe, a perfect maschine it would show. By many theoretical steps I did try to solve that - self-imposed - riddle. Chapters above, Crop circle and Sling and Swing with lots of sections, do describe this mental developement. Concepts and designs there, discovered many aspects of rotating systems. Now, principle of an engine is developed, which does fulfill all theoretical demands claimed above, and same time does correspond to that crop circle picture completly.

Element	Symbol	earlier	actual	alternative
narrow side	min	1	4	5
Excentrity	EX	3	5	5
System-shaft	SW	7	14	15
Crank-shaft	KW	10	19	20
inner Ring	R1	14	28	30
inner Sickle	S1	17	33	35
outer Ring	R2	21	42	45
outer Sickle	S2	24	47	50
Cylinder	ZY	28	56	60

At sections above of this chapter, Physics of Sling, basic constructional elements, characteristic movements and power-effects are described in detail. Here, some more technical aspects shall be talked about.

Relations
It´s rather difficult, from fotos of crop circle pictures to take exacte measures. Earlier, at Parts and relations of crop circle picture some data were shown, remarkable this increment of four and three units, from element to element (see column ´earlier´ at this table). Narrow sides of rings however, seamed to be really thin (but a half unit) in relation to whole picture.

That´s why here relations are corrected a little bit. Increment then will be fife units (corresponding to excentrity) resp. nine units (inclusive four units for narrow sides, see column ´actual´).

Alternatively, one also could make narrow sides like excentrity, then increments of fife and ten units would be (see column ´alternative´). At the table, elements and symbols and these radius are shown.

Elements
At EVGM 31, once more elements of crop circle picture are shown, also corresponding now with inertia motor. Circles again will mark interfaces between elements, practically will show the glide surfaces. At this picture, general symbols of this tabel are used. Now, norrow side of excentric rings are designed some stronger. Relations of measures here are corresponding to column ´actual´ of that table above.

Below at this picture, once more the position of elements in relation to system-axis resp. excenter-axis are shown. Each element is determined by an inner and outer circle resp. circle-arc. Centers of each circle (resp. circle-arc) at every element differ by system-excentrity.

Bearings
System-shaft of input and output, within the housing must be mounted turnable by known technique. All elements will move relatively to each other. Interfaces between elements relative large will be, however all times circle round. On the one hand, there will be a large surface for friction, at the other hand forces can thus be transfered well. When surfaces are well prepared, gliding bearings may be used. Today, there are oils available with extreme few friction-losses. If roller-bearings would be used, they would best be placed at front, middel and end of sickles. Friction could also be reduced, if permanent-magnets would be used. There are lots of practical versions to construct this engine.

Even all parts compactly will fit one into the other, will turn all times each versus the other, there will be no danger to get stuck. Now, there is no more a fix determined procedure of motions, but elements can take unlimited diverse positions and may move different for moments nearby totally free. So even two parts would stick together, the maschine as a whole could well go on running.

Effective masses
The crank-shaft but will guarantee input drive, its mass should but serve most possible steady turning (even this speed must be controllable, see below). The cylinder takes all output forces, its mass practically will have the function of a fly-wheel, i.e. will serve most possible steady momentum at output. This inner and outer ´fly-wheel-masses´ will be some half of all masses in motion.

Effective by inertia, whole masses of sickles are. At rings, excentrity is not thus extreme, however a large part of masses of rings will be effective by inertia too. Thus, some third of all surfaces of masses in motion will be effective masses. That´s why even small motors may show conciderabel performance.

Sectional views
At EVGM 32 upside, once more a shematical cross-sectional view through movable elements of this motor is shown. Now here, both sides of each element are drawn. Tips of sickles here are rounded.

Below, these elements in same position are shown by longitudinal cross-section view. Cylinder (ZY) here is drawn that kind, at both sides of other movable parts will reach inside to system-shaft (SW). The cylinder thus will include all other turning parts. Thus in the center, the cylinder will build a hollow shaft around the system-shaft. In principle, input-drive (AN) will be done by system-shaft, output-power (AB) will be taken from cylinder resp. this hollow shaft. Now here the housing (GE) is shown too, within which these shafts have to be mounted turnable.

Vibrations
So, whole inner space of this maschine will be filled up with solid constructional elements. All parts are in contact to next by large glide surfaces. All masses will turn one within the other, however with diverse and differing speeds. Towards outside, i.e. shafts and housing, inertia forces will compensate at high rate. If all parts would be build of same material, in princip there would exist balancy.

On the other hand, naturally within such a module will come up vibrations, depending on turning speed. Within this maschine, there is no space for additional balancy weights, balancing-shafts etc. (besides drillings in order to reduce weights). An engine with one module like this, thus must be supported well towards outside, e.g. by elastic mountings in diverse directions.

Eight-cylinder-engine
Nearby totally soft however an engine would run, existing of several of such modules. Naturally excentrity of cylinders resp. crank-shaft must be shifted each module. At least by eight ´cylinders´ (modules like above), this motor will rund soft and calm, even at extremely high speeds.

Radius of system-shaft, a quater of whole diameter of all parts in motion will be (14 of 56 units). So this crank-shaft is stable enough to serve several modules, without mounting each at the housing. Cylinder of all module, best would be integrated within a common pipe, so from outside highly stable this element would be, inclusive all movable elements within.

Cross-section here does show 130 units (e.g. mm) inclusive the housing. It well would be possible, to arrange eight modules in axial direction, also with 130 units length. Nearby a fifth of whole constructional volume, effective masses would be. It´s easy to estimate, at which turning speed this compact engine would show which performance.

Power-package
Connected with this maschine (or lastly integrated with), an electric motor as input device could be. This motor must show but few performance, but should be able to drive high speeds. However, this device should be controlled by electronics, in order to adapt turning speed in accordance with power-output demanded. Connected with the output (or lastly integrated at the output-shaft or even the cylinder) e.g. a generator could be. Thus kinetic energy could be transformed into electricity, e.g. feed into batteries (form which the input motor could be served).

This power-station of small dimensions will serve whole energy demanded within a family house, and other demands of decentral power-supply too. Also other usage of this engine can be thought about, e.g. by direct usage of turning motions. There will be lots of applications of this wonderful engine - as sure as pictures appear within corn fields.

Evert / 07.04.2000