Reply To: Oliver Bendix Coils

[JOSEPH BRINCAT]

Just a side note about using “unknown quality” black rubber for high voltage insulation. I had used a couple of pieces of black rubber tubing as gromets and found after much aggravation that the rubber was conductive and shorting the spark. Apparently enough carbon black in the rubber compound was the culprit. Check resistance on high ohm scale before use.  I had written a tech article for the “Outboarder” about this , several years ago.

Joe B