Jump to content

Left or right mainspring


Recommended Posts

Look at the hook on the arbor, one side will have a slope that the mainspring centre eye would not hold against, the other side will have a square end that it would.

Basically if you put the spring in the wrong way round (upside down) when you try to wind the spring it won't catch on the hook and if it did you would be winding the spring the wrong way for it to wind up around the centre arbor.

 

Also if its not an automatic watch, or a 'T' end spring the outer end of the spring will not catch on the outer edge of the barrel either.

It simply comes down to how the watch was made as to which way the spring needs to wind up inside the barrel.

 

I'm sure most of us when first learning has put a spring in 'upside down' in a watch barrel before, its an easy mistake to make when first learning.

Link to comment
Share on other sites

4 minutes ago, leduardo said:

To Thanks everyone! The answers were very helpful. I’m starting to do some repairs and didn’t want to go deeper without understanding fully the whole process of reassembly.

Its great to have so many knowledgeable people to learn from, yes? I've rewound a few mainsprings the wrong way in my day, and its something that one learns to quickly be very careful about because you have to take most of the watch apart to get to the mainspring. If you just starting out, take a picture of the mainspring orientation as soon as you open the barrel, and that way you can figure out which way it is supposed to be rewound once you get everything clean--very helpful especially with auto-winding mechanisms.

J

Link to comment
Share on other sites



  • Recently Browsing

    • No registered users viewing this page.
  • Topics

  • Posts

    • people be honest.... Swatch is evil for the watchmakers and repairers, BUT not everything in watches from Switzerland is from the Swatch-Group. As far as i know, Selitta got sacked by Swatch as a Movement-Assembler for them and they started to produce Movements in their own Name with slight Modifications. As far as i know, they sell Parts to the Market for their Movements. In most cases, if a ETA-Movement fails, it is a valid Option to replace it with a Selitta Movement, which i consider the Solution for this Mess with the Swatch-Group...... I have no Connection to anybody at Selitta, but being a Swiss-Guy, i still like to have Swiss-Made Watches, but not from the Swatch-Group.   ok ? regards, Ernst
    • Just one more greedy act by Swatch. They started a number of years ago here in the US..cutting off supplies to watchmakers that could build complications that many Swatch houses couldn't even touch. Old school masters who had gone through some of the most prestigious houses in the world. Otto Frei has some statements on their page about it. I tell all my customers to avoid new Swiss watches like the plague,..unless they just want an older one in their collection that still has some parts out on the market, or they have really deep pockets and don't mind waiting months and paying through the nose to get it back. Plenty of others to choose from..IE Seiko,..or other non-swiss brands Even a number of Chinese brands are catching up with the Swiss,..and I think that in time, their actions will be their downfall
    • Yes. If that's not what you are experiencing...start looking for something rubbing. A 1st guess is that one of the hands is rubbing against the hole in the center of the dial. Especially if you now have lower amplitude in face up/ face down positions.
    • Once a movement has the dial and hands put back and it is recased, would you expect the assembled watch to have the same amplitude as when the movement is in a movement holder and is without hands and dial? Thanks
    • C07641+ not sure what the "+" is for after the last digit.
×
×
  • Create New...