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roskopf troubles

2251 Views 27 Replies 6 Participants Last post by  riclit0
Hi guys
!st timer here and mostly ignorant.
have an Newmark mk11, 13 lignes. pin pallet oldie(worn) Original balance replaced with closest match but watch losing 50-60 minutes per full day.
Reckon the balance is too heavy, Is that ok ? And so plan to skim balance rim approx. 4per cent of total weght to speed up.
Is this viable ? Would decreasing weight of balance speed up timekeeping to proper levels ?
Amplitude seems good, healthy tick and runs for 27-28 hours on full wind,cleaned and oiled.
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Matching one 'as Close as I can get' may be the whole issue. These machines are pretty precise with no room for error. As Riley pointed out a shorter hairspring will run faster, but may cause other issues. With out the exact matching part it will be trial and error, and a bit of luck.
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