Stock WideCase Charging-system & Rect.Regulator Schematic

[DewCatTea-Bob]

By: wcorey...
" In the alternator testing project, we rewired the individual coils to be configured as single windings and got output levels similar to the stock dual winding configuration. "

____ First-off, I'm somewhat surprised that you seem to have forgotten some of you own testing-work which had not only helped prove that the PULL/PULL-effect must have been not only working but also quite stronger than I-myself had expected it to !
It's true that after you got the four (or was it six?) pairs of individual coil-windings rewired-up so that they would then pass their current-flows in the same direction (thus create their flux-fields in coherent-harmony instead of being in opposition), you THEN got power-output which was not greatly different from the test of the rather-common set-up -(where the paired-up stator-windings' [n-c]- ground-point is simply lifted & isolated and output is taken from the two yellow wire-leads). _ BUT, in THAT test-case, (even though all the pairs of coil-windings were still wired-up in the stock configuration), the pull/pull-effect can-NOT work then (with the two stator-windings connected in series like that, [unlike when left connected in parallel, like stock] ) ! _ The reason it can't still work is because both windings are then always live with AC and so when the p/p-effect still performs it's shared power-creation, that created/(potential)-power is more than canceled-out due to the existence of (the series-setup produced) positive-pulses which otherwise don't exist (with the stock half-wave/parallel setup).


" I had assumed that more or less invalidated the ‘push/pull effect’ theory and was why it wasn’t pursued... "

____ Since YOU TWO seem to like to say: "push/pull", maybe we can compromise and call the effect 'PUSH-pull/pull' , as that would even better describe the complete process.
__ BEFORE you "had assumed" that conclusion (you must have come-to on your-own sometime afterwords), you had to have once been aware of the added-bonus power-output which you-yourself had measured must exist, in (at least) one of your test-setups. _ Because if you hadn't noticed on your own, I soon after brought it to light when I made note of the (otherwise inexplicable) power-reading difference between the test-outcome of either alt.winding alone and when both are tested running together as stock. - (Half-wave rectification, of only one alt.winding, put-out well less than half the power, of both together ! [Remember?].)
__ There was reason for "why it wasn't pursued", as there's very little possible way to improve on how Ducati had already had it done.
__ I have been putting-off reviewing that test-data and doing a full write-up on the related p/p-effect, partially because that thread which first covered it had become TOO long. _ But I've recently began covering it here and thought I'd likely get back to completing a brief explanation of the whole-process within my earlier-post (in which I had mentioned I would come-back with added wording to the post). _ But now, I suppose it would be better placed in this one (due to the given subject-titles of the posts).
The full write-up, (if I ever get to it), ought be done in another thread, since it's relevant to both the w-c 6-coil and the n-c 4-coil 6-pole stators !

____ So now here's a description of the pull/pull-process/effect...
Those who already have an understanding of how the current flowing through the primary-winding in an ign.coil creates a field of magnetic-flux, that when collapses, then induces a current-flow through the ign.coil's secondary-winding,, should have no trouble grasping this slightly more complex pull/pull-action, (which is on top of [or rather besides], the 'push' action done by the alt.rotor.)
__ The two separate (but reverse wound) stator-windings each of-course offer AC.power-flow but, each of their circuits is half-wave rectified,, plus that, the two windings are connected 180-degrees out of phase,, thus when one winding-circuit is allowed to provide a (w-c.type)- negative-pulse of DC.current-juice, the other circuit is kept dead (instead of flowing positive-DC), and of course vice-versa when the AC-cycle flips-around to it's other half.
And when either winding-circuit is flowing current, it has then created a magnetic flux-field around itself & it's stator-pole,, and as the DC-pulse falls-off, then so does it's created flux-field along-with,, and as it falls-down, the DC-pulse's own created flux-field pulls an induced current into the OTHER winding-coil (through the same stator-pole). _ (Kind of like free/bonus-power, as it's created-separately from that which the alt.rotor 'pushed' into existence.)
And when the alternator-polarity shifts-opposite, then the opposite winding-circuit does the very-same trick for IT'S 'mirror' winding-circuit ! _ So thus the two windings' falling-fields take turns pull-inducing current into one another. _ Thus the "PULL/PULL" term I've come-up with. - (As the effect is fairly like a H.balloon on a string being PULLed-down, [after normal air-pressure PUSHed it up].)
__ This added-extra bonus-effect increases alt.power-output by increasing the duration of the DC.power-pulses, which sort of gives the standard 180-degree DC-pulse an extra 90-degree kick-start. _ But the extra 90-degrees doesn't come into existence until the load-system draws current through the alt.stator-windings,, however, the greater the drawn-current, the greater then becomes the p/p-effect's current ! _ (Kind-of makes me wonder about the possible amplitude-ratio of the bonus 90-degrees, to that of the main 180-degree DC.pulse.)
(I hope to soon add a graph to show the related waveforms.)
__ From testing of my own back in the early '70s, I've been somewhat aware that the 6-pole type Ducati-stators may be wound to be taking advantage of the pull/pull-effect, but then also, I had only understood the p/p-effect to work at the full expected 1:1-ratio only with 'square-wave' power-waveforms, and had assumed then that the alternator's gentler sine-wave type power-waveform would work only in a fairly reduced efficiency (and provide only a slight kick-start/lift to the leading-edge of the main DC-pulse). _ But Bill's relatively straight-forward testing surprised me as to how really strong the p/p-effect still actually is (with the less-abrupt transition, than square-wave) !
If the two (normally expected) 180-degree long batches of DC.power-pulses provided 60 total watts (alone), then with the full 1-to-1 ratio of pull/pull transference effect, I'd then expect the wattage-total to increase to probably no more than 90-watts.
I don't recall if Bill's testing attained that same extra 50% added-power, but I believe it was closer to that than I had expected.
__ These Ducati-alternators with their stator's two windings wound in the special-arrangement that they are, ought to be capable of producing greater MAX.power-output WHEN powering higher current-drawing loads (as RPMs climb to maximum),, compared to other alt.winding types ! _ However, I don't see the need for this type of alt.winding's power-output characteristic, as it's more-likely more useful to produce LESS max.power-output at top-RPM and MORE power-output nearer the bottom-range. _ (And FULL-wave rectification is better at doing that.)


Finished-Cheers,
-Bob