Cymrex pocket watch mainspring

[Jake]

I got this movement a while ago, but just recently got the tools to be able to open it. The mainspring was in several different pieces, seemingly all in line with each other in the barrel assembly. My question is are most springs considered equal, as long as the ends are the same? Does it have to be a cymrex spring? If so, they seem to be in short supply, where can I get one?

[Nucejoe]

Isn't cymrex a watch brand name?   

Look for the caliber, its usually engraved somewhere on the movement, if no luck, show clear close ups of the movement and writting, marks on it, so it can be identified. We then need to look it up in databases hoping to find the right mainspring, also measure and disclose dimentions of the barrel and of the mainspring.

Meŕry Christmas.

[watchweasol]

Well I have seen some mainsprings but that is the best, definitley had a dose of the metal weevil.  As Joe explained to be able to identify the movement hopfully we need any numbers from the movement and a photo.  To purchase a GR spring you need to measure the length the heigt and thickness of the spring  and the barrel inside height and diameter         Happy New Year

[clockboy]

11 hours ago, Jake said:

I got this movement a while ago, but just recently got the tools to be able to open it. The mainspring was in several different pieces, seemingly all in line with each other in the barrel assembly. My question is are most springs considered equal, as long as the ends are the same? Does it have to be a cymrex spring? If so, they seem to be in short supply, where can I get one?

 

11 hours ago, Jake said:

I got this movement a while ago, but just recently got the tools to be able to open it. The mainspring was in several different pieces, seemingly all in line with each other in the barrel assembly. My question is are most springs considered equal, as long as the ends are the same? Does it have to be a cymrex spring? If so, they seem to be in short supply, where can I get one?

Jak you need to measure the broken spring height and strength (thickness) and also note how the end of it is designed ie Hook end etc. After establishing these measurements you then need to measure the arbor diameter and the inside measurement of the barrel and from these measurements you can determine the length required. The calculation for this can be found via  internet searches or I can do that for yourself. I also have a GR catalogue so can give the Gr spring ref number. However I have found finding an exact match for vintage watches is not always possible so a compromise is normally required