I have read about every thread on engine kill switches and think I am beinging to have an understanding of them. I have the diagram the Big_Bird posted on how to wiring a electronic iginition.

I am unclear on how to use the switches during starting. When you are choking the engine do you have the manual switch on or off? Seems to me you would keep it off until you have fuel in the carb. Turn on the manual switch and start the engine, right?

As you can tell I am new to the whole gas engine world, trying to understand it before I jump in!

I am going to use a servo activated switch. Should i use a momentary contact switch? Does the servo switch need to stay shorted for any length of time?

Thanks

bwillhite

Its likely I dont understand your switch concerns so lets review the subject for both our benefits.
My understanding of the switch function is one of safetyIE an on/off control over ignition whether to prevent an accidental firing of the engine,or the ability to shut it down fast if necessary ,(loose mount,thrown prop,etc...).Keeping this in mind I have never understood servo driven switches since how are you going to shut the engine off in event of a complete radio failure with the engine running?
Therefore I use a manual on off switch in a reachable location.
Regarding starting I know I will be flamed for saying that I use switch on and full choke until the engine fires and stops.Then choke off throttle to idle and start EVERY TIME.
What am I missing?

NOTHING..........
A kill switch on a magneto engine shorts out the mag..
A kill switch on electronic ignition opens the circuit to the battery..
Semantics......

bwillhite,
Basically, rcign is correct. You can kill the ignition (the two ways he mentioned) or you can choke the engine. I prefer to choke the engine so I don't have to choke it manually when I am starting it.