Following up on bucc’s thread about removing the iron core from the “military” ignition coils. I think that I figured out how to do it without damaging the coil or the core. What I did was do some excavation around the core on both ends of the coil, this to break the bond of the plastic potting material from the iron core. Using a pointy Exacto blade, carefully cut and chip out the plastic around the core to a depth of about 3/32′. You can tell when you get through the plastic into the fiber sleave. The core is not bonded along it’s length, apparently “stuck “only at the ends. Once cut clear, clamp the core end in a vice (clamp the laminate sandwich, not across the plys), using a wood block with a hole tap the coil down to break it loose. Use a 3/8 ” punch to drive the core all the way out. Because the core end is cut at an angle, I filed the high end down to form a central “hump” for a centered purchase for the punch. I extracted the core, rotated it 90* and reinserted it …for my application in a Bendix- Scintella mag. Sorry, I should have taken more photos of the process, But here is the finished job, note the “excavations” and the “hump” end of the core.
Will lit you all know how this all works out when I get the motor assembled.
Joe B
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