[SEL] Stickney Ignitors

[Jack]

They use linear motion instead of oscillating like most spring snap 
ignitors.  The combustion gases are pushed by compression into a  
hollow T where the linear rod makes contact with fixed ground & spark 
occurs. It is just that the points are not inside bore area like many.  
The body is outside the engine as others, even those piston trip on 
McVickers & Edwards. Hope this clears it up some.