Champion C26

Started spending some time looking at this spark plug. By using the good all “Google” I found that this was a Champion C26. Some history:

1920s – 1930s :

  • Champion began development of spark plugs specifically for aviation industry.
  • Champion Aero-1 plugs sparked world’s speed record (318 mph) and world’s altitude record (38,793).
  • Champion spark plugs helped power Aeronca Dowager, first successful U.S. light plane.
  • Created Aero RA, a low-profile spark plug with radio dome shield.
  • Expanded facilities for ceramic research.
  • Pioneered the C-26 spark plug.
  • Developed industry’s first aluminum oxide insulator.

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So I am looking for a replacement of this spark plug. Trying to understand what parameters are important for finding the right replacement. And then there are the ignition leads. Do I use just plain old copper, compression leads or shielded leads……

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1 thought on “Champion C26

  1. Hello,
    I’m a Belgian classic car owner, and while looking for prewar plugs for my 1933 Morgan Threewheeler, I came upon a small stock of Champion C26 plugs for unshielded ignition. So far I sold several to Brian Dalton of Texas for his Travelair aircrafts. I still have a limited number available. They are new old stock, each plug is cleaned, tested, and comes in original package. Asking price is 25 Euro each.

    Regards,
    Luc Ryckaert
    Molenhoek 29
    B9968 Oosteeklo
    Belgium

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