Alfred Evert
Sun-Wheel-Motor
with Crank-Disc-Gear

Objectives
Zwirchmayr: Picture with Importance After I presented Sunwheel-Motor, Adalbert Zwirchmayr did send me this picture with remarcable analogy to crop circle picture of Sun-Wheel. Years ago, he painted this ´Impression´ and had impression, this symbolic would have some importance. He couldn´t directly use this inspiration for his conciderations about most effective props, but he was amazed to hear from my interpretation of Sun-Wheel as design of a motor.

For me, this multi-coloured picture represents variety of posibilities for realizing this principle. At previous chapter Sunwheel-Motor was mentioned, demanded crank-shaft-gear also could be done at only one axial level. This principle of crank-disc-gear with its integrated elements, by this chapter is described.

Encluding bearings
At picture EV CPS 81 schematically is shown this crank-disc-gear. Within a housing (here not drawn), system shaft (SW, German Systemwelle) is mounted turnable around system axis (SA), like any shaft of normal crank-shafts. At normal crank-shafts, one pair of arms show radially, at their outer ends crank-bearings are installed.

Here, this crank-bearing (KL, German Kurbellager) is dimensioned thus large to include main shaft. Center of this disc-like crank-bearing is excenter axis (EA). Distance of ´stroke´ of that crank-gear is double distance between system axis and excenter axis.

At normal crank-gears, a connecting rod is mounted turnably around this crank-bearing (and other end of connecting rod is mounted swivably e.g. within piston by a connecting joint). Also here, conncecting rod (PS, German Pleuelstange) is mounted around crank-bearing (KL). Also here, some distance off excenter axis is arranged axis of connecting rod, here called crank-axis (KA, German Kurbelachse).

Connecting rod (PS) by itself, here is not shaped like a rod but as a disc, concentric to that crank-axis (KA). Outer contour of this connecting rod (PS) thus represents crank-bearing (PL, German Pleuellager), which normally e.g. is embedded within piston, here correspondingly within rotor.

At position shown at A (left upside in this picture), excenter axis (EA) and crank-axis (KA) both show to left side of system axis (SA). So here disc of crank-bearing (KL) and excentric ring of connecting rod (PS) both show to left side. Crank-axis (KA) thus is positioned far left side, so effective mass of rotor is positioned most far aside of system axis.

In operating status of Sunwheel-Motor, crank-shaft will turn slower than rotor arm and its embedded rotors. So rotor will turn around crank-shaft. This relative turning around crank-bearing (KL, at this picture showing all times to left side) here is drawn by four phases.

At B (left side down in this picture) connecting rod (PS) shows downwards, i.e. crank-axis (KA) is turning around excenter axis (dotted circle with arrow), i.e. distance to system axis now is shorter. By further turning to C (right side down in this picture) connecting rod (PS) does show to right, crank-axis (KA) now is at position like system axis.

At this phase from A to C, thus effective mass is pulled inside towards system axis, counter direction of its centrifugal forces, i.e. these forces here weight onto crank-bearing (KL), thus excenter axis is pulled downwards (prevailingly resp. purly tangential at B).

At following outward-phase (from C via D back to A), crank-axis (KA) is moving into direction of centrifugal forces, thus there will weight much less turning momentum onto crank-shaft.

Evert Sunwheel-Motor So by this design of crank-shaft, diverse elements are arranged at only one axial level: disc of crank-bearing (KL) is fix (but aysmmetrically) mounted at system shaft (SW). Around this circle-round disc (KL) is turnably arranged excentric ring of connecting rod (PS). Outer contour of this connecting rod (PS) represents connecting joint (PL). Around this bearing (PL) now effective mass resp. rotor is to arrange swivably.

Sickle shape
At picture EV CPS 82, this gear is shown once more: around system axis (SA) is turnable system shaft (SW). At this shaft fix mounted is round disc of crank-bearing (KL), conzentric to excenter axis (EA). Around crank-bearing (KL) is turnably mounted connecting rod (PS), its outer contour is concentric to crank-axis (KA).

Connecting rod (PS) now is embedded within connecting bearing (PL), which is a circled drilling within rotor (RO). At this picture upside, stretched position is drawn, i.e. effective mass (MP) of rotor is at its outmost position.

Rotor here is drawn like a circled segment (in principle), so its effective masses are arranged sickle shaped (in general). Rotor is swivable within its rotor bearing (RL), which is a circled drilling within rotor arm (RT, German Rotorträger), conzentric to its rotor axis (RA). This rotor axis (RA) should be arranged that kind, showing same distance to system axis (SA) and crank-axis (KA) as well. (As an alternative: at some crop circle pictures, circled bow of rotor bearing runs through system axis).

At this picture further down, situation is shown where mass is pulled inside (thus corresponding to previous position C). Compared with dotted lines through system axis, one can see, mass is pulled inside but also moved some ahead within inward-phase.

At this picture quite downside, schematically a longitudinal cross sectional view through two moduls is drawn, corresponding to both positions drawn upside. Both crank-bearings (KL) here show to left side of system shaft (SW). Around this crank-bearing (KL) is turnably mounted connecting rod (PS), which is embedded within rotor (RO). Rotor again is embedded swivable within its rotor-bearing (RL) of rotor arm (RT).

So each modul is arranged at only one axial level. Several moduls like this are to arrange (correspondingly shifted) side by side at system axis. At rotor arm (RT), few forces of input must be available for compensation of friction losses (and for controlling system turning speed in general). At system shaft (SW) useable output ot turning momentum is to take off system. Details about operating modus like effects in general are discussed at previous chapters.

Compact and effective
Evert: Sunwheel-Motor At this animation, disc of crank-bearing (grey) excentrically turns around center of system. Connecting rod (red, here also drawn sickle shaped) serves only for adaption of turning movement of crank-bearing and swivel movements of rotor (green) within rotor arm (blue).

Relative turning of rotor within rotor arm are only some 15 degrees. While one full turn of crank-shaft (grey), rotor arm (blue) does two full turns. While one turn, rotor is pulled inside and positive turning momentum is achieved. While next turn, rotor is allowed to fall outside again and negative turning momentum much smaller is given.

If several moduls like this will work shifted, system will run absolutely balanced. So this motor is to constuct very compact and can run high speeds. Naturally, here only principle of construction in general is presented, naturally all relations shown here must be optimized. Nevertheless, there is a huge variety for realizing Perpetuum Mobile of Third Kind, however this Sunwheel-Motor with Crank-Disc-Gear is rather valuable variation of.

Evert / 16.07.2002

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