Fitting a new balance staff to a vintage 1940s cyma www military watch. Repair series
326.5 هزار بار بازدید -
11 سال پیش
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Watch Repair Course Level 1:
Watch Repair Course Level 1: https://goo.gl/kbZRSu
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This 1940's Cyma WWW vintage military watch had a broken balance staff, both top and bottom pivots. This video shows how I removed the old balance staff and replaced it with a new one.
The principle tools used on this job are a Bergeon Platax tool for removing the old staff and roller, and a staking set to rivet the new staff onto the balance wheel and re-seat the roller and hairspring.
The method of poising, which is not shown in the video, is "Dynamic Poising" which is done with the balance in the watch working with enough wind to achieve 100 degrees of amplitude, then measuring the rates with the watch in different vertical positions. This allows me to find the heavy point and adjust as needed.
The end result was a +70 year watch keeping time to within 10sec/day.
Discuss watch repair issues and learn more at
http://www.WatchRepairTalk.com/
Watches restored and repaired by http://www.watchservices.co.uk
Watch repairs and services in the UK
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This 1940's Cyma WWW vintage military watch had a broken balance staff, both top and bottom pivots. This video shows how I removed the old balance staff and replaced it with a new one.
The principle tools used on this job are a Bergeon Platax tool for removing the old staff and roller, and a staking set to rivet the new staff onto the balance wheel and re-seat the roller and hairspring.
The method of poising, which is not shown in the video, is "Dynamic Poising" which is done with the balance in the watch working with enough wind to achieve 100 degrees of amplitude, then measuring the rates with the watch in different vertical positions. This allows me to find the heavy point and adjust as needed.
The end result was a +70 year watch keeping time to within 10sec/day.
Discuss watch repair issues and learn more at
http://www.WatchRepairTalk.com/
Watches restored and repaired by http://www.watchservices.co.uk
Watch repairs and services in the UK
11 سال پیش
در تاریخ 1392/08/10 منتشر شده
است.
326,521
بـار بازدید شده