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Post by lain on Jul 8, 2015 1:10:54 GMT -5
I stumbled upon something interesting today. I was helping someone with a scooter, it is DC powered, from the battery. The CDI wires have an orange wire where the 2 wires for the cdi go, and on the 4pin connector it has a green, black, and black/yellow wire. Am I mistaken or is this not a DC setup?
Well I did not have a DC CDI on me, I had an AC CDI, stock little black box. I put it in, and it started right up with the push of the electric starter and works great. I am a little confused. Why did that work?
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Post by tvnacman on Jul 8, 2015 12:39:05 GMT -5
They don't last long .
John
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Post by lain on Jul 8, 2015 19:45:49 GMT -5
They don't last long . John I want to understand why it worked. I thought the CDIs could only work in the setup they were meant to be in? like AC for AC only, DC for DC only, etc. |
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Post by tvnacman on Jul 8, 2015 21:25:25 GMT -5
the ac voltage is higher then the dc so it works for a short while. if you put dc in ac they burnout faster.
John
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Post by lain on Jul 9, 2015 9:17:45 GMT -5
So what you are saying is the AC cdi gives out more voltage than a DC CDI? Why should that matter? I want to know why it worked, not how it works in comparison to another CDI. I just simply want to know how an AC CDI could p[ossibly work in a DC setup when the wires aren't even the same and there is no AC voltage to feed the CDI.... Not a comparison.... Thanks though.
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Post by tvnacman on Jul 9, 2015 10:12:28 GMT -5
the c in cdi is capacitive , meaning the capacitor charges up with energy . a dc cdi's capacitor will charge up with ac voltage.
John
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