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Re: [TCML] car distributor as rotary gap



My intuition predicts that there would be a continuous ring of plasma
that would melt and burn up the distributor cap in about half a minute.



On 14-04-18 09:17 AM, Jim Lux wrote:
> On 4/17/14, 6:09 AM, Co60bishop wrote:
>>
>> I am confused by Jim's comment. The distributor definitely does make
>> and break high voltage. The center of the distributor cap is one high
>> voltage connection and then tie the outer spark plug wire connections
>> together for the second connection. You can use a 4, 6, or 8 cylinder
>> distributor and experiment with how many spark plug connections you
>> use depending on the RPM of the motor spinning the rotor if you like.
>> The distributor is designed to make and break upwards of 30KV.
>>
> 
> The pulse from the coil is very short (<1 ms) and occurs when the rotor
> is near one of the spark plug terminals.  By the time the rotor has
> moved away from the terminal, the HV is long gone.
> 
> At 6000 rpm, the distributor turns at 50 revs/second (20
> milliseconds/rev). So on an 8 cylinder engine it takes about 2.5
> milliseconds to move from one plug to the next.
> 
> 
> 
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