<VV> Smitty's distributor question

[Sethracer at aol.com]

Smitty - My earlier note mentioned that I am not sure the un-plugging  
caused the problem. As I see it, pulling the primary input to the coil (the  
switching wire) would be problematic because power would still be fed into the  
distributor module. I am not electronic-savvy enough to track down the  
electrical flows inside the module. I suggested cutting off the power feed  to 
the distributor module - by pulling off the 12 volt feed wire, usually at 
the  coil or resistor. I suppose it is possible that other electrical current 
could  "feedback" through the other side of the coil into the module, via 
the switching  wire. 
 
Open to suggestions! - Seth
 
 
In a message dated 8/4/2015 10:59:49 A.M. Pacific Daylight Time,  
virtualvairs at corvair.org writes:

Smitty  Says;  Seth’s post followed by Mike’s warning concerning pulling 
coil  wires raised some interesting points.  If you have a runaway engine, 
what  can you do to stop it without killing yourself.  I have had two runaway  
events.  One with a stock ignition engine and one with an extreme HEI  
ignition.  Stopping the stocker was simple.  Just jerk the coil wire  out of the 
distributor.  Just a typical spark plug jolt to the hand and  it was over.  
The HEI was a different story.  When the wire came out  of the distributor 
cap it slid through my hand leaving a row of RF burns and  backing me 6 ft 
away from the car.  It would have been safer to have  pulled the wire out of 
the coil, but as Seth said, that’s not a good idea  either.  The spark will 
carbon track the nose of the coil or can jump the  windings of the coil and 
destroy it.
The  question in my mind is, what could be constructed to make an emergency 
 shutoff.  If opening the primary circuit can burn out the module and  
opening the secondary (High Voltage) can hurt you and the equipment as  well,  
is there a way to shut a runaway down quickly?  
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