Selecting the correct mainspring

[Mike Krosnosky]

Please advise where in the literature is a guide to selecting the correct replacement mainspring.
I suspect that previous repairs used a mainspring that was "handy" and usually stronger than necessary.

Mike

 

[shutterbug]

This might help. See the link in the first posting.

 

[Willie X]

Mike,

There are 'exact' replacements available for some clocks BUT for most clocks it is a matter of trial and error. If you post information on the clock you have someone on this list that might be able to help you answer your question. That is, they may have already done the trials and errors.

MS strength/thickness is the kicker. Width is usually a given, and length can be calculated (once you know the strength/thickness.

There is no calculation for the strength/thickness necessary to run your clock and your clock may run very well with a thinner spring than you might see in the common tables of older common clocks. This is a good thing as your clock will last longer, run longer, and be easier to wind.

Willie X