I agree some what, but a resistor is a current limiting device, it is like having a water hose squeezed at some point, and to try to get more water out of the hose the pressure (voltage) needs to go up.nitro2 wrote: ↑Fri Apr 13, 2018 6:41 pmAir is an insulator. The more air you put in the gap the more voltage you need to jump the gap. The less air you put in the gap the less voltage you need to jump the gap. If you put enough air in the gap you can't jump it at all, the spark will just come out elsewhere.
Adding a resistor does not change the voltage requirement at all if there were no capacitance effects. A resistor does nothing until there is current, and technically there is no current until the gap is jumped, but in reality there is a little current due to capacitance.
The ignition system does not build voltage to overcome a spark gap AND overcome a resistor (unless there is significant capacitance) before firing the plug, it builds voltage to overcome the spark gap. Pulstar plugs are an example where the resistor does have a significant role because they purposely add a capacitor. On some applications Pulstar plugs work really well.
Try it make a larger spark gap and the voltage will climb higher before it jumps. Air is an insulator, but it also does conduct depending on moisture.
"The more air you put in the gap the more voltage you need to jump the gap." Air pressure, Why is that?