[Healeys] Lucas Sports Coil

josef-eckert at t-online.de josef-eckert at t-online.de
Sun Apr 28 09:59:30 MDT 2019

Then my answer is wrong. Here I am thinking "not" imperial.
Some (stupid) people may not know. To make it clear. Ohm is a SI-Unit. 
Georg Simon Ohm was a German Physicist. ;-)
Josef Eckert
Betreff: Re: [Healeys] Lucas Sports Coil
Datum: 2019-04-28T17:19:17+0200
Von: "Michael Salter" <michael.salter at gmail.com>
An: "I Erbs" <eyera3000 at gmail.com>
I would never deem to use anything but Imperial Ohms.�

On Sun, Apr 28, 2019, 11:02 AM i erbs, <eyera3000 at gmail.com
<mailto:eyera3000 at gmail.com> > wrote:
  Are thoes metric or standard ohms :)

  Ira Erbs
  Portland, OR
  typos and artifacts are the fault of my phone

  On Sun, Apr 28, 2019, 7:30 AM Michael Salter <michael.salter at gmail.com
  <mailto:michael.salter at gmail.com> > wrote:
    Regarding the coil resistance
    I pulled out my Fluke meter and got exactly the same results....  these
    are B12 coils used on the early BN1 and many other cars including the
    Jaguar XK120.
    Turns out that primary resistance between 4.2 and 4.6 is actually
    correct for these, unlike the later styles.
    You learn something every day..

    On Sun, Apr 28, 2019 at 8:56 AM Michael Salter <
    michael.salter at gmail.com <mailto:michael.salter at gmail.com> > wrote:
      Well that's really weird because the one on my car reads 4.6 and
      works fine ... has for ages ... I think I might have to check my
      ohmmeter �

      On Sun, Apr 28, 2019, 8:41 AM josef-eckert at t-online.de
      <mailto:josef-eckert at t-online.de> , <josef-eckert at t-online.de
      <mailto:josef-eckert at t-online.de> > wrote:
        Primary resistance of 2.7 to 3.3 Ohms is right. It doesn´t matter
        if its an ordinary or a so called Sports Coil. When its 4.5 to 5.5
        Ohms the coil is gone. You can bin it.
        Josef Eckert
        Betreff: Re: [Healeys] Lucas Sports Coil
        Datum: 2019-04-28T14:35:19+0200
        Von: "Michael Salter" <michael.salter at gmail.com
        <mailto:michael.salter at gmail.com> >
        An: "Michael MacLean" <rrengineer.mike at att.net
        <mailto:rrengineer.mike at att.net> >
        2.8 seems low to me Michael. I have some original early 100 coils
        that I'm just cleaning up to put on Ebay and they show readings of
        around 4.5 - 5.5. 
        Of course that might be a difference between regular and sport

        On Sat, Apr 27, 2019, 5:57 PM Michael MacLean, <
        rrengineer.mike at att.net <mailto:rrengineer.mike at att.net> > wrote:
          I have a period Lucas Sports Coil type SA-12 for my BN2.  I have
          not tried it yet.  Can anyone give me the specs on it?  I get a
          reading on my VOM of 2.8 ohms between the two outer connections
          and 9,400 ohms for the center to one outer connection.  Is this
          coil weak or is this correct?
          Mike MacLean

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