Re: Spirit engine problem fixed....now the %&*^$ SX/4

[Tom Jennings <tomj@xxxxxxx>]

On Thu, 23 Jun 2005, Peter Marano wrote:

> If the car had points and the points were closed the voltage would be 
> reduced, but if the points were open would not the voltage mesure 12 volts? 
> V=IR  The volt meter is a null device, it allows no current so I=0.
>
> I don't know how the electronic ignition behaves when the engine is not 
> running.

Electronic ignitions of the Duraspark type (meaning basically
electronic "points replacements" not CD or other fancy-pants
stuff) leave the coil saturated with current (eg. "points closed")
until the reluctor vanes in the distrib MOVE past the coil. It's
magnetic; it doesn't detect position (like points do) but require
motion.

Basically it acts like a points car, except the engine never stops
with the points open. Makes it much easier to test!