Potato guns can benefit from having multiple spark ignition. Here are a the wiring details:
Multiple sparks: I have heard that 3 sparks increase efficiency by 30% compared to single sparks. This has recently came into debate and is being tested on the Burnt Latke web site. I am confident that they do improve power, and I think this is even more apparent on longer chambers. A BBQ igniter can make 2 sparks, but if you want to get some seriously powerful multiple sparks I suggest going with a stun gun. My chamber currently has 4 sparks. At first I had the hardest time trying to figure out how to get two or more sparks. When wiring multiple sparks they must be wired in a series. The following pics should explain how to do this.
To get 1 spark
To get 2 sparks
To get 3 sparks
To get 4 sparks
It makes no difference which is negative and positive.
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