How to Size Any Watch Mainspring to a Barrel
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- Опубліковано 6 бер 2023
- In this video, I'll be discussing how to size an incorrect watch mainspring. If you're new to watch repair or watch troubleshooting this video can save you a lot of aggravation, you know how important it is to keep your watch running smoothly. A mainspring is a crucial component of a watch movement that provides the power necessary to keep the watch running and if it is sized incorrectly for the watch's correct condition, you will have problems with amplitude and regulating the watch.
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-- Related Content --
I can’t tell you the number of times I’ve acquired vintage watches that have come with entirely wrong mainsprings. In my rookie days, I would dutifully order a replacement mainspring by measuring the width, thickness & length of the old spring, punch in the numbers at CousinsUK and then wonder why the watch still ran poorly. I learned more from my mistakes than my successes.
Just when I'm thinking "where the hell is Alex" he pops up.
Here's why this video is awesome: I purchased a mainspring from a company that listed replacement springs 'by brand + movement number'. The spring I received was the wrong size. I re-watched this video and had the confidence to size the correct replacement mainspring, based on the barrel dimensions. (It's much different than what they sent!) Knowledge is power - thank you, Alex, for sharing the knowledge!
Got my first non runner working today thanks to your videos! Seiko 7002 not running for 10 years started moving today. Amplitude weak. Convinced main spring is weak. I’m sure many of us would love if you did a very detailed how to video for winders for both left and right mainsprings.
So all you can do if you don´t find the exact right mainspring is to pick the one closest you can find and that is the best you can do?!?
Short, to the point and packed with nuggets of information. Again. Glad to see your channel is slowly but surely picking up steam, well deserved for all you bring to this great hobby. The joy of getting knowledge that I can apply and gradually getting better is invaluable, thank you so much Alex
Thanks for this lesson. How to measure the length of the mainspring without straightening it.
Well , you got the reason on what you said, but if I work on a watch with cero experience , and with no proper tools that will make me even more unsure.
This tutorial on how to measure the mainspring is fantastic, I just can't find any place online to use this information to order the main spring once I've gathered all the information needed. I can't find any forums or information regarding where or how to order the part needed specifically. The biggest hurdle to my watch repairing hobby is finding any resources on how to properly order new parts, what the name of those parts are, and what websites to order from. I ran into this issue with crystals and mainsprings. TLDR, where and how do I apply this info to ordering new parts? Any help would be appreciated, I know this question is probably extremely basic, but it would mean a lot of someone would provide an answer.
Please tell me how to find mainsprings by size. Based on your equation, I need the following: 2.0 x .17 x 470. Thank you
There is a reason why I signed up for your watchmaker course. You produce content others just gloss over. Thanks Alex.
Great content again. Your confidence building closing statement " ... is going to make you a better watchmaker", will be remembered as a "classic" someday.
This is very good stuff.
Thanks again Alex, informative as always. Good to see the channel growing so well too.
Not only is the content great, but your video production is really evolving with every video.
I just ran to my notebook to write down that formula. Thank you again Alex. 😊
Thanks for this Alex! I should now be able to source a close mainspring size for a 60's Seiko 6602B movement I have had trouble locating.
Hope that you are well and thanks for the video, Alex. Super useful - am working on an HMT and screwed up the mainspring. After watching the video, I now know what I need to order. (The old mainspring was too small.) Looked at a number of sites and Cousins seems to have the most stock. Again, really appreciate your help. -Victor
Very important indeed to have the knowledge on how to figure out a comparable spring to the original for vintage movements.
This is was a gem of a video to find! I've just taken apart and cleaned 2 Elgin and Omega pocketwatches and am about to order the new springs. I am a novice but have replaced a few. Your superb method and brilliantly explained video is a revelation after some of the shenanigans I've employed to get measurements 😁