Combustion chamber & twin plugs

[Robert Fridman]

> All piston aircraft engines from about 1915 on have twin plugs per 
> cylinder.  Switch one set off - engine RPM drops about 500 rpm or
> so.  Must contribute both to power and reliability.  Just part of the
> background on why I want a bigger flame.  (in the combustion chamber
> - remember I have asbestos pampers)

Piston Aircraft have a complete duplicate ignition system in case the
first one fails.

Does anyone know what had to be done in order to make a twin plug head
still work with 1 plug?


	RF.

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83 R100			DoD 749			Robert Fridman
84 320i						fridman at cpsc.ucalgary.ca