[quote="wcorey"]

Halfwave series 'really' reversed, 3ohm, 3450rpm, Didn't try testing it again at 1ohm either

. Pretty much the same result as (what I think is) the full wave version of this that was done at Bruce's request "
____ The full-wave version that Bruce asked for would've allowed full AC-flow through the entire alt.stator, and thus possibly have different effects that P.DC-flow may not also cause.
While the expected DC-test outcome ought be the same canceling-out effect (which I gather was the AC-test outcome), the series-reversed DC-test shouldn't result with exactly zero, (unless the circuit's left open).

" Halfwave, series, 1 ohm, 3450rpm, 3.7a, 17.4vac, 3.9vdc "
____ So that's 8.7-volts P.DC to produce 14.43-watts DC, from both alt.windings in the std.series circuit.
" Halfwave, 'one side', 1 ohm, 3450rpm, 3.4a, 13.6vac, 3.5vdc "
____ So that's 6.8-volts P.DC to produce 11.9-watts DC, (from one alt.winding alone).
" Halfwave, 'the other side', 1 ohm, 3450rpm, 3.7a, 13.4vac, 3.6vdc "
____ So that's 6.7-volts P.DC to produce 13.3-watts DC, (from the other alt.winding, on it's own).
__ So it seems, while one alt.winding will produce 11.9-watts and the other will produce 13.3-watts (for a total of 25.2-watts), the two alt.windings connected in series seem to produce only slightly over 14.4-watts, (about 10.8-watts less than would be expected from a std.transformer type winding-setup).
So we can now realize that it's not the AC-aspect that is the cause of power reduction, since it seems that the reduction-effect remains, even with just Pulsating-DC.
" This is another one I must have missed due to it (the drawing anyway) being added-after-the-fact, back a way's.

'stock' parallel, 1ohm, 3450, 3.8a 5.1vac, 3.8vdc "
____ I believe this is the one you've already done once or twice before.
__ Now this test-result is not what I've always expected. ... This parallel (dual half-wave) circuit ought to have a wattage-output equal to both alt.windings together, (that's 25.2-watts) ! _ Yet we still have the same wattage-output as when they are in series ! _ (Which regardless of being in series OR parallel actually makes perfect sense to me however by the way!) _ But what's actually disconcerting is that no mater the circuit-arrangement, the power-reduction loss seems to remain un-avoided.
__ So my first thought, is that the stator is faulty, or else I have to think that Ducati sure makes a really screwed-up stator-winding ! _ And if that's the actual case, then a complete rewinding of their alt.stator is called-for ! _ (And I already have a rewind-design which I'm sure would've been better than Ducati's !)
" (I was wondering about the unused rec. ground so I jumpered it to the alt. side of the load and got 2.2a, 3.4vac, 2.3vdc, no clue if this means anything at all...) "
____ I understand that you made a jump-connection from the rect.block's (unused) negative-output to one of the alt.winding leads, (but I don't know which). _ Doing that would short-out the NEGATIVE power-pulses of at least one of the alt.windings.
On top of that, since the positive-wattage fell over 9-watts (down to just 5-watts), you not only shorted-out one of the alt.windings all-together, it seems you also increased the effect that obviously stifles the expected power-output. - (A possible added clue.)
" Am I now up to date with the test requests? "
____ I believe you've tried all the various possibilities, however before you tear-down your setup... I believe you've had a test-result that didn't check-out to be exactly confirmed... Once, (as I think I recall), the series-connected alt.windings' combined AC-output was simply somewhat less than double that of either winding alone, while another AC-test indicated that the series combined output of both was actually a bit LESS than either alt.winding's output by itself.
So the test ought to be run again, to clear-up which outcome is most correct.
" I have a friend that is quite a preeminent Physicist who does a lot of work with high voltage but I wouldn't even have a clue as to what to ask him about this thread. "
____ His answer to why 1+1 equals less than 2, in this case, would be of fair interest,, don't ya think ?
Hopeful-Cheers,
-Bob