Thread: Magneto Kill Switch

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I wouldn't go with a relay, if it is on the N/O side then whenever the power is 'off' the engine is able to fire up and run; if it is on the N/C side then the relay (a $5.00 part) is the lifeline of the car. If it were up to me i would want a competitor to use a relay.
I don't know how much power you are making nor how violent, but if the contacts in that relay 'break' and then 'make' when launch or burnout you will have one hell'uva explosion thru the exhaust - just something to consider in your calculations.

I just reread the post and it didn't come out right, when i wish that a competitor used the relay i meant that at some point the relay will fail and he won't be able to come to teh line. I would not want to see anybody have an engine explosion and that possibility occured to me as i was writing the above post.