Step 5: Making a spark
PIC#1 To ignite the fuel, I borrowed the pulse ignition from my gas grill. It uses a single AA battery and supplies a steady flow of sparks at about six to eight per second and will jump about 3/4 inch. The grip frame was designed around the ignitor to keep the the total package as compact as possible.
PIC#2 This is the cap that contains the battery and push button contact in the ignitor body. To keep the grip frame as slim as possible I removed the flange around the base of the cap with a Dremel and drum sander.
PIC#3 To secure the ignitor to the grip frame I simply screwed the cap to the ignitor body sandwiching the bottom of the grip frame. It only needs to be finger tight to hold it securely.
PIC#4 I attached the ignitor electrode to the fuel chamber with a #10-24 machine screw, flat washer and lock washer. The ground wire will be attached to the fuel chamber under this nut.
PIC#5 Final step before test firing, I shortened the wire harness that was part or the pulse ignition and attached one wire to the ceramic insulated electrode and grounded the other to the fuel chamber. Time to gather a video camera and a fire extinguisher and go outside.