the more winds would make more voltage.
unfortunately you then have to design the cdi around the new, higher voltage.
it would run more advanced, simply due to the way the CDI circuit is configured.
if theres no zener diode or similar way to restrict current through the gate of the SCR... youre gunna fry it, no matter what, and then... the main capacitor needs to be up rated to take the extra voltage. exceed rated voltage, and poof... the magical smoke inside escapes!
then is the higher voltage coil up to the CURRENT demand? a discharged cap is much like a short circuit...current goes through the roof, while voltage almost hits zero... as it charges, the current decrease and the voltage starts increasing (ohms law, E=IR...) until it reaches a point that it cant take any more charge...or minimum current, at full voltage potential.
by increasing the voltage, the current also increases... as the capacitor and its "resistance" is still the same. i say "resistance" with quotes cus its a bit more complex than that.
the reading you get with an AC meter, or any voltmeter, will be a good approximation, but will NOT be the TRUE voltage. the CDI isnt running at a constant 50/60hz, which is what most AC meters are designed for. they also "usually" only read out RMS voltage, which is an average voltage. the magneto doesnt produce a clean sine wave, but rather a peaked, almost square wave. RMS is only useful with sine waves, at which point its roughly 0.7 of the PEAK voltage. RMS may read, say, 700 volts, but the peaks will fry a standard 1n4009 diode, rated at 1000v...
me, im starting to agree with your pa...bad luck, much? cus i still, personally, have not fried a CDI! (read on)
you may be better off getting a new magneto AND cdi at the same time.
lastly...if you got a 50 volt transformer... or even a straight 1:1 isolation transformer... you can test the cdi with that. (remembering the plug needs to be earthed to the black wire still)
you "could" just plug it into the wall socket, but DONT.
DONT
DONT
DONT DO IT.
you may wake up DEAD.
the current available at a power point is DANGEROUS. still, even the 240 mains here(AU), is only half the voltage that the cdi unit experiences...it just wasnt designed to take a virtually unlimited current dumped into it, with a nice clean sine wave... (low impedance source)
i found that they WILL fry after about 20 seconds running on mains AC...
even with fat 5W resistors limiting the current...
wanna experiment?
i take NO credit for this circuit, but it DOES work, you can buy all the necessary components for less than $5, and or...can always find the components in old power supplies etc. you may have to do a few searches on data sheets....say, a c106d works just as well as the BT151 or similar... (the one component with no label!...its called an SCR or silicon controlled rectifier) use 1n4007 or higher if you can get them, not the 4004... and kick cap up to a 600v or even a 1kv type...
or, if you really up to it...
once again, someone elses work, not mine!
note that it includes the "jag CDI" settings,much better value than spending $75 dollars!
slightly more complex. i have a PCB designed for it if interested, measures about 30x50mm.... a lot of work went into getting it that small! and i also did change a few things, not an exact copy. better
im currently working on an entirely different take on the idea, using absolutely nothing familiar from these two circuits bar the main capacitor... im waiting for a specific component to drop below $5 EACH, unlike the SCR which can cost 5c in bulk....