You need not shout. "" will do. I've probably discussed all of this here or there. What I usually do in comparing this with the standard three phase arrangement is to assume one inch diameter magnets and two inch diameter coils with twelve magnets (the three phase is restricted to numbers of magnets divisible by four, this design can use any even number of magnets). The magnets alternate poles and are spaced every 30 degrees. The 18 coils are spaced every 20 degrees. The coils are arranged in three groups of six. When the coils of group one are centered exactly over the magnets having north poles, the coils of group two (and three also) will just be touching magnets having south poles. This determines the geometry as well as the size of the rotor and the stator. I'm going to rotate the coils here instead of the magnets, as I think it's easier to see the action, although the result would be the same. As the coils rotate (in either direction), the coils of group one are moving off of a north pole creating a negative pulse (arbitrary choice). At the same time the next group of coils advancing in the direction of rotation (call it group B) is moving unto a negative pole, also producing a negative pulse. The last group (C) is moving between magnets producing no voltage. Carrying on, group B now moves off of a south pole producing a positive pulse, while group C is moving on to a north pole producing a positive pulse. Group one, (or A if you wish) is now between magnets producing no voltage. At this point we have produced one complete cycle of the output waveform in moving one eighteen of a revolution. So, we get eighteen cycles per revolution.
I'm not going to discuss the center tapped version at this time. It has different characteristics, which may be useful, but I think you should completely understand the basic design first.
The output of this alternator will be single phase, as all the coils are connected in series. As far as winding the coils is concerned, for this exercise the total amount of copper per coil remains constant. If you wind the coils with the same wire as used in the three phase but two in hand, you will end up with the voltage (of my design) cut in half and the resistance reduced by a factor of four (which results in 3/4 of the resistance of the three phase, for instance). Both voltage and resistance are important.
"I have noticed you tend to use peak voltage when you really mean RMS voltage. Peak voltage is semi-constant whenever the coil reaches saturation while RMS voltage varies with the speed due to frequency and pulse width changes."
I don't mean RMS or Root Mean Square voltage. It is not a very good measure for an alternator who's output is not a pure sine wave. Your RMS meters will give an erroneous reading. What you are missing is that for a given alternator the ratio of the peak voltage to the "average voltage" stays constant with RPM. When charging a battery peak voltage not average voltage gets you there first. I explained that in the other thread. Coils never reach "saturation". They can't. They do not contain any iron. Nor are the speeds reached by these alternators high enough for hysteresis or inductive effects to become important. Keep in mind that the iron parts are not in saturation to begin with.
"The term ground tends to imply a connection to earth or chassis and 0 volts. Neutral implies no connection to a chassis or earth and the voltage is not always zero."
Ah, semantics, semantics. The neutral of the 220 volt supply to my house is definitely connected to ground (Earth). On the other hand the center tap of a transformer could be connected to the Datum Node (ever hear of that) or ground of a particular circuit, which you could connect any way you see fit. Many tools today are not grounded. The alternators we are discussing here are by their nature floating and can be "grounded" in any way you see fit. Many circuits will show a circuit ground, the connection of which is optional or up to the user. So, take the "ground" that I mention and connect it to your chassis, or the neutral of your house or the Earth, or leave it floating. I don't care. The sense that I was using "ground" was a common point about which the output voltage is defined. That is, the circuit ground or datum node.