I have just completed my first clock, a simple non-fusee, recoil escapement, timepiece to a design by Colin Thorne.After the initial euphoria that it actually worked, and ran for 8 days at a winding, I have got down to regulating it.
My question for the Group clockmakers is what accuracy of timekeeping should I expect? Careful measurements over the last week show that it ran progressively more slowly as the spring ran down, the total variation in rate over 7 days being about 4 minutes. For the current setting of pendulum, if I set the hands correctly when fully wound, it shows 4 minutes fast at mid-week, then correct again after 7 days. Obviously, I could play around with the pendulum length to make the error - 2 minutes at the beginning, +2 minutes mid-week and -2 minutes at the end of the week if I fiddled some more.
Is this good, bad or indifferent?
Mike