10 Discussions and CommentsMember since Jan. 25, 2009Kristinehamn,
Sweden
I have a number of IWC watches with different types of cal. 85X1 movements.
On cal 8541ES which I think is the best one, it is very easy to set the date, just to toggle between 23:45 and 24:00 and the date moves on. The movement is also stopped during the operation.
On cal 8541B this technique also works but the movement runs during the opration and sometimes seams to run backwards when hands are moved backwards, it does'nt feel right.
On my caliber 8531E the toggle technique doesn't work at all. Here I have to turn 24 hours in forward direction in order to advance the date, very time consuming. This also doesn't fell right.
It feels like it's harmful for the movement to move it backwards on earlier 85 calibers, or? I have some understanding about how the motion works (cannon pinion etc.)
I would appreciate very much if someone could clarify and give some advice.
654 Discussions and CommentsMember since March 22, 2001
The cal. 8541B should have a stop hack which while turning the hands stops the train wheels.
Yes, it can be harmful to turn the hands back or back and forth if the watch is not fresh with lubrication. Doing so puts stress on the wheels and you can thereby cause damage to some parts.
10 Discussions and CommentsMember since Jan. 25, 2009Kristinehamn,
Sweden
Thank you for the information Jack,
What about the 853 or 8531 movement, doesn't it have this stop hack? Where is the hack located, on the center, the third or on the fourth wheel? I would imagine that it must also be harmful to set the hands in the forward direction if the lubrication of the cannon pinion is poor?
The hacking mechanism, is that clutch acting directly on the balance?
654 Discussions and CommentsMember since March 22, 2001
Lars,
I just checked my files and according to information received by MF our moderator from the IWC factory not all C8541B movements were equipped with stop hack mechanisms.
Neither the C853 nor the C8531 came with the hack feature.
Turning the canon pinion while dry can also be harmful but by going backward and forward you accelerate the friction which makes it worse.
On cal 8541ES which I think is the best one, it is very easy to set the date, just to toggle between 23:45 and 24:00 and the date moves on. The movement is also stopped during the operation.
On cal 8541B this technique also works but the movement runs during the opration and sometimes seams to run backwards when hands are moved backwards, it does'nt feel right.
On my caliber 8531E the toggle technique doesn't work at all. Here I have to turn 24 hours in forward direction in order to advance the date, very time consuming. This also doesn't fell right.
It feels like it's harmful for the movement to move it backwards on earlier 85 calibers, or?
I have some understanding about how the motion works (cannon pinion etc.)
I would appreciate very much if someone could clarify and give some advice.
/Lars
Yes, it can be harmful to turn the hands back or back and forth if the watch is not fresh with lubrication. Doing so puts stress on the wheels and you can thereby cause damage to some parts.
Regards,
Jack Freedman
What about the 853 or 8531 movement, doesn't it have this stop hack?
Where is the hack located, on the center, the third or on the fourth wheel?
I would imagine that it must also be harmful to set the hands in the forward direction if the lubrication of the cannon pinion is poor?
The hacking mechanism, is that clutch acting directly on the balance?
Regards
Lars
I just checked my files and according to information received by MF our moderator from the IWC factory not all C8541B movements were equipped with stop hack mechanisms.
Neither the C853 nor the C8531 came with the hack feature.
Turning the canon pinion while dry can also be harmful but by going backward and forward you accelerate the friction which makes it worse.
Regards,
Jack
Last edited: 11 August, 2010 - 01:41