Some Help solving my electrical situation.

[swehollow]

So. I just bought this 250cc gasgas from 03. Its an understatement saying Ive not been Lucky With it so far. Anyhow, i was wondering if anyone can help me a Little With my electrical system. It has a battery and a reg/rec. It has 75w output (as it says on a hand wtitten note) but the wiring is a mess.

Lets start With the stator. What can u Tell me about it? Its ("resoldered")

 

[swehollow]

Here is my ignition coil and what Else?

 

[swehollow]

And here are 2 of the 3 cables from the coil connected to the cdi

 

[Anders]

Here is my ignition coil and what Else?

That other small black box with the yellow wire is your AC voltage regulator. It limits the voltage so it doesn't rise above 12-13v or so (I did never actually measure the regulated voltage so I don't know the exact figure).

 

[Anders]

Lets start With the stator. What can u Tell me about it? Its ("resoldered")

If its resoldered it may have been modified for a floating ground. If you have a battery that would make sense.

 

[swehollow]

Yes Anders That seems logical. Ive been reading other threads about floating grund but i did not understand what it meant really.. Anyone care to explain? Im sure other People are asking the same Thing.

 

[bergerhag]

Floating the ground on the Ac side enables the full period of the sine wave to be used as input to the rectifier. I came across a very good article yesterday, will post it when I can get my body out of the bed:-D

 

[bergerhag]

http://mastercircuits.blogspot.se/2012/07/half-wave-to-full-wave-conversion.html

 

[Neil E.]

That is a good article since the diagrams help show the difference. A three phase (3P) system provides minimum ripple and the highest output. This is not going to happen on a GG unless you buy an aftermarket 3 phase stator.

The point being made is that floating (isolating) the ground allows you to use a full wave rectifier which provides less ripple than a halfwave rectifier. They also show connection using the complete windings for the fullwave system. It is somewhat erroneous to show the halfwave system connected using only part of the windings. In a rectified system (full or half) you always use the full windings.

Only a non-rectified setup uses partial output since this reduces the workload on the AC regulator (it limits AC voltage to ~13V). The idea that a fullwave system is significantly better than a halfwave system is misleading since the battery acts as a filter for any ripple that is created. The limiting factor is still the amount of wattage that can be creating by the windings. It is correct to state that stable DC voltage is important for HID lighting.