Home Forum Ask A Member 1935 Imperial Lightfour Condensers

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  • #184676
    Buccaneer
    Participant

      US Member

      The old condensers tested at .47 and .52 mfd.
      Garry S.’s data says .1 for 1937 to 41 Lightfours, Zephyr, etc.
      Would the specs for a 1935 Imperial Lightfour have been
      that much different, or more likely someone put some automotive
      condensers in at some point?
      Have some axial caps on order, but would like to install the
      correct ones.

      Also, are the Imperial, and later lightfour coils the same as
      Zephyr coils?

      DSCN8183-1

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      #185153
      garry-in-michigan
      Participant

        Lifetime Member

        Zephyr and Lightfour coils are interchangeable. If it has soft iron core magnets in the flywheel, 0.015µƒd is maximum. Alnico magnets specify 0.020 µƒd + or – 0.004 µƒd.

        #185159
        Buccaneer
        Participant

          US Member

          Garry, Thanks for the information! I was able to use the old coils, and ended up
          putting in .01 axial caps. The 1935 fire pump Lightfour was missing it’s flywheel,
          and I plan on putting the flywheel from a 1937 Lightfour part motor I have.
          Can I assume that one that early would have the soft iron core magnets?
          Thanks!

          DSCN8193-1

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          #185163
          garry-in-michigan
          Participant

            Lifetime Member

            The Alnico magnet was developed by General Electric under a WW2 government contract. It came into general use in 1945. Now a days where space and weight are critical, rare earth magnets are used.

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