Hi,
Boy do I hate work, it sure mess's with one's hobby. Anyway, were do I start. jimg; You are starting to scare me! First off I guess we better clear up the fact that these bike's do NOT have generators , they have alternators. I AM old enough to remember cars, mine as well, that had generators, AND the cars that had the first alternators with external regulators both mechanical AND electronic. You are right though about none of this being constant current and in one of my post's I think I mentioned this. No matter WHAT we do nothing is going to be constant as we don't have an adjustable electro magnetic feild to play with, like car charging systems have! And actualy NO 12 volt battery need's more than 2.3 volts per cell, this of coarse is 13.8 volts maximum, to get the most life. It might interest you to know that at a volts per cell range of between 2 minimum and 2.3 maximum you can expect 200 or more cycles of charge out of any given battery, but if you go up or down as little as .25 of a volt of this rate the cycle rate will drop to about 50 before reduced storage capacity will start to take affect. If you would like to know more about ALL types of batteries, check out the ARRL Handbook any library should have them. Now, as far as your sources in parallel, the stator winding's are NOT in parallel they are in the classic "WYE" configuration, 3 set's of coils with the output taken from 2 set's in series as the flywheel/magnet spins around them, each set of coils on each "leg" of the WYE are also in series, add them up and this gives us the 50 or more volts across each set of wire's. If the stator was wound in a "DELTA" configuration then we would have something closer to the parallel system that you were talking about. We have, hopefully, cleared up the charge/ discharge cycle rate already, and the 13.8 max. battery voltage so what's left is the current demands that the bike needs. This is really an easy one, like you said, stick an amperage meter between the rectifier and the battery and measure the draw, with a fully charged battery of course. It should be very close to what the WATTAGE of everything running on the bike is. You can also get a very close guess by adding up the wattages in the book as well, of course you have to know what the ignition draws, but it probably is less than two amps. And also I'll give you the "smaller wire doesn't pass less current" thing, but, and you may know this, most people have a hard time understanding that electrons move on the OUTside of a conductor, not through it. So to explain in detail wire size versus current flow and voltage drop,,, well it's simple enough to say and understand that smaller wire will conduct less current. Oh and by the way, small wire does not mean voltage loss, the resistance in a wire is to current not voltage. A 2000 volt ceramic capacitor has leads a little bigger than a human hair and they are de-rated, the maximum that they will handle is almost 4000 volts and then it's the ceramic that burns out, not the wire. And also the size of wire WILL have a affect on current output, have you ever done any work with transformers? In every transformer I have ever seen the secondary VOLTAGE is completely based on how many windings there are in relation to the primary windings. With any set amount of input (or magnetic flux lines) the output voltage will be higher with more windings in the secondary than the primary, and visa versa of course, BUT the more windings in the secondary to increase voltage the less usable CURRENT you will have in the secondary. The reasons for this are not important to most out there but if anyone has a hard time understanding why you can't have both in something as small as our stators, look at a big ARC WELDER. An arc welder has both current AND voltage, does anybody want to pack one of THOSE around on their bikes? OK, back to the parallel thing, you almost have it right, BUT, we only have 1 diode for + and 1 diode for -- on each leg AC of the stator so these are not parallel on the input side. If we had 2 diodes for each positive and negative swing then we WOULD have to address the resistance of each diode and have equalizing resistors for them for the current, but this is not the case as the only time this need's to be done is if the diode's used can not handle the current draw, and diodes are cheaply available that can take WAY more current than out stators could ever hope to produce.
Also AC motor capacitors are there for STARTING the motor NOT AC filtering as in my reg project. I'm not really too sure where you got the idea that I was trying to get DC from the capacitor, and I really don't know why I would want to put diodes in the stator when my reg HAS a diode rectifier ahead of the DC regulator anyway. I think somewhere along the line you have become confused, no DC regulator I know of can regulate an AC input. There are what they call "switching reg's" but even they need a DC input, so I'm not to sure what you mean. Maybe you got the term "wrap around" mixed up. This has nothing to do with diodes or AC or capacitors, this is the reg circuit that DOES read the output to the battery and also allows short/overload protection. Anyway, the off/on action of the SCR type reg is crap, and the reasons are pretty clear to most out there. And jimg maybe I better way to put it is, the battery has to absorb the SHOCK of the off/on SCR reg and as the SCR reg is a off and on switch( with no inbetween) it is also turning off and on the current as well, and this IS NOT good for the battery no matter how fast it can turn off and on. Get yourself a copy of the ARRL Handbook and check it out.
I have the rec/reg all packaged, for anyone following this, and have been heat and overload testing it. I can say honestly that short of your bike catching fire and melting the whole unit, it will sense and shut down if the temperature get's to critical. The reg has been heated with a propane torch to test this, and short of riding into a volcano or something, heat will not hurt anything. When the housing get's to hot to touch is when the limiting starts to take place, and if the outside air temp got that hot, well you wouldn't still be riding anyway! I can adjust when the temperature starts to shut it down, and I might make it limit at a lower temp, but it does work and thats all that I want out of it. I will try to check back on here more often to address any input, sorry but the working life really sucks!
Keith