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Hi all, 

I am currently working on a tissot 2481 (equal to an omega 1481) and have tried to replace the mainspring, I ordered the correct spring from cousins but the centre spiral wasn’t tight enough for the arbour, the only option I had (with limited skills and knowledge) was to bend the spring to suit, after several attempts to get the correct size it led to the spring snapping

is there an alternative mainspring suggestion as it seems it is the cousins Swiss one I’m having the issue with or does anyone know where I can source a mainspring barrel complete?

thank you in advance

Sam

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33 minutes ago, oldhippy said:

Have you looked at other suppliers. I don't know what you tried to bend it with I always used round nosed pliers. 

I have had a look but my concern is I will have the same issue, I used a few types of pliers and tweezers in my attempt to bend the spring but I think that method isn’t ideal, I was thinking it would be best to have a barrel complete but I’m unsure as to the part code and finding the correct one

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11 hours ago, Samspeed87 said:

Hi all, 

I am currently working on a tissot 2481 (equal to an omega 1481) and have tried to replace the mainspring, I ordered the correct spring from cousins but the centre spiral wasn’t tight enough for the arbour, the only option I had (with limited skills and knowledge) was to bend the spring to suit, after several attempts to get the correct size it led to the spring snapping

is there an alternative mainspring suggestion as it seems it is the cousins Swiss one I’m having the issue with or does anyone know where I can source a mainspring barrel complete?

thank you in advance

Sam

Two ways in which i tighten up the inner coil. 1st which has always worked up to now when the spring is new or very good shape, a brass/wooden rod inside the coil to press against, i just use small pliers to manipulate the spring. The wooden rod has that extra give so you can overcompensate with your bend to allow for the steel's elasticity. If you want less breakage risk then anneal just the arbor coil, then reharden and temper when you have the shape you want. 

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Hi,

I've serviced a Tissot 2481 movement which had a broken mainspring, I used the following from Cousins a GR 2973X mainspring which fitted with no issues. Your issue is a common problem that is often mentioned on this site, that you source a mainspring that matches your original mainspring dimensions but on arrival the mainspring eyelet doesn't match your arbor, generally too open.

Regards CJ

7B9F82D7-45A7-4B0A-98ED-1B22239B1864_1_105_c.jpeg

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Thank you all for the advice, I may have another go at the bend using the advice given, my other option is to source the barrel complete and I believe this is the tissot part 180-1, there are several new old stock around online

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8 minutes ago, Samspeed87 said:

Thank you all for the advice, I may have another go at the bend using the advice given, my other option is to source the barrel complete and I believe this is the tissot part 180-1, there are several new old stock around online

 light heat as i have just found out while adding a tongue to a spring . Dont re-harden and temper ( warning from nickelsilver ), all that does is anneal more of the mainspring that gets heated up while hardening.

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