zOwie Omega Discussion Forum

: I've noticed that most people recommend winding
: a hand wound watch first thing in the
: morning for the best results. Is there any
: reason not to wind it more often than once a
: day?
: I've noticed that my Speedmaster Pro seems to
: keep slightly better time if I wind it in
: the morning and then again at night when I
: remove it.
: As a side note, it runs slightly faster when I
: don't wind it before retiring. I would have
: thought it would run slower if not fully
: wound rather than faster. Seems to defy
: logic in my opinion.

I'm quite novice to these watch matters, but the reason for Your observation of Your watch running faster while not wound before bed time could be in the main spring tension. Some watches run faster when the main spring tension is low because the power transmitted to balance wheel is less and this reduces the arc the wheel travels and consequently paces up the impulses given by the wheel. More impulses in a given absolute time mean faster running watch.