Eureka Regulating a Eureka

Discussion in 'Electric Horology' started by Neville Michie, Jan 22, 2015.

  1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.
  2. For the new NAWCC home page
    Click this image at the upper left corner of this page.
  1. Neville Michie

    Neville Michie Registered User
    NAWCC Member

    Jun 15, 2011
    Sydney, Australia
    Country Flag:
    Region Flag:
    Can anyone tell me the sensitivity of the regulator on a Eureka clock?
    The eight legged star wheel has 4 divisions on the scale for each leg,
    how much does moving it one leg change the rate?
    I thought that this information might be in one of the sources
    on Eurekas but I have not been able to find it.
    I am just getting a derelict Eureka to run again after having to
    make a replacement train for it after it was destroyed by someone
    trying to quartz it.
    Cheers from
    Neville Michie
    in Sydney.
  2. Tinker Dwight

    Tinker Dwight Registered User

    Oct 11, 2010
    Calif. USA
    I can't help much on the marks.
    I just wanted to say, if people wanted to a quartz
    in a clock like this, why don't they just sell it and
    buy something to tell time. The left overs, they can
    put in the bank to buy batteries.
    Tinker Dwight
  3. Snapper

    Snapper Registered User

    Nov 30, 2014
    Lincolnshire, UK
    Country Flag:
    Hi Neville,
    Good to see you repairing the damage done to a relatively rare clock.
    I my experience, (admittedly on only one Eureka) the rating star has a somewhat "loose" effect on the going rate. I can adjust the star on my clock say one turn in one direction, and that will affect the rate to a variable extent which seems dependent on temperature. Where I live in the UK, the ambient temperature can vary from -10 to +25 Centigrade degrees over a twelve month period, and although the room in which the clock is situated does not vary anywhere near that amount, it is enough for me to run out of adjustment on the star wheel. If the temperature is relatively stable, I can get the clock running to within a few minutes per day.
    It doesn't bother me, but rather adds to the quirkiness of the clock.
  4. Tinker Dwight

    Tinker Dwight Registered User

    Oct 11, 2010
    Calif. USA
    If it is varying by that much a day, it is in need
    of some form of servicing. Being a constant
    amount each day is just adjusting but if it varies
    that much something is not working well.
    Tinker Dwight

Share This Page