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Check your mainsprings "Click" to Login or Register 
Mike Miller
posted
If anyone recently ordered 12S Illinois Mainsprings (Bestfit # MS-JA423 or S LaRose #039338-045A) you might want to double check them. They are supposed to be 11x6x18 1/2. Even though my packaging was labled accordingly, the mainsprings I received were actually 18x5x21 1/2.

Better to find this out during idle-time rather than when I did... in a time sensative situation.

Mike Miller
 
Posts: 539 | Location: Central Illinois in the U.S.A. | Registered: November 22, 2002
John D. Duvall
IHC Life Member
Picture of John D. Duvall
posted
Mike,

Couldn't agree with you more! I ordered two 37s size mainsprings from S. LaRose and stored them away for over a year. When I got ready to use them, the inner hole for the arbor was incorrectly punched. The spring was so stiff; I couldn't open the coil up enough to file off the excess area.

Mainspring Slipping

John D. Duvall
IHC Happy Camper 192
IHC185 Watch Repair Moderator
 
Posts: 1123 | Location: Arizona U.S.A. | Registered: January 21, 2003
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