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WatchProSite|Market|Digest

Jaeger-LeCoultre

Excellent, Martin, you did...

 


hi Martin,

thank you so much indeed for the excellent note with very self-explanatory drawings.

since i have posted the questions to this forum, my son asked me any people responded to our post so far. you know we have been waiting for such well-written answers!

after receiving your post, my son and i both were sitting together in front the computer to understand what are the differences of these three combinations of two barrels. we talked and discussed, and talked and discussed again, finally understood all of your answers well. the most happy thing to me he can understand what you are talking about much faster than mine. when I don't understand some of the details, he tried to explain it to me. apart from understanding how the two barrels are running inside the GMT, now both of us are so happy to learn thing together which help us strengthen our bonding.

by the way, we love your drawings which indeed helped.

thanks once again, Martin!

stefan

PS: after understanding how two barrels run inside the GMT, have one more question in mind, hope you or other guys can provide hints for this - this GMT has 8 day power-reserve, however comparing with other watches that has only barrel inside, the number of turns of winding the crown to full power for this GMT seems much lesser. is it because of this 2-barrel design? (my question is clear to you!)

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27 Comments view entire thread 

some questions asked by my son...

 
By: FanFrancisco : January 16th, 2010-08:13
hi folks, i was talking watches to my son this afternoon. i showed him my Reverso Grande GMT and told him that this watch has 8 days power-reserve because it has 2-barrels running inside. then, he asked how do these 2 barrels run? they both run independen... 

Your son's quesitons

 
By: ArthurSG : January 16th, 2010-18:58
indicate and inquisitive and strong thought process for his age. I wish I could help but I am clueless too.

thanks...

 
By: FanFrancisco : January 17th, 2010-06:40
hi Arthur, my son read your reply, he smiled and said "thank you for your kind compliment." stefan

Let me try

 
By: stromer : January 17th, 2010-00:50
Hi Stefan, hi Stefan's son! I know of three different reasons to put two barrels into a watch: You need a lot of torque for driving something big.

Let me try again

 
By: stromer : January 17th, 2010-01:45
Hi Stefan, hi Stefan's son! D..., I always mix up the "Insert" button and the "Igame uploader" link.............. Sorry for the first post. So here we go again: Basically I know of three reasons to put two (or more) barrels into a watch: 1. You want to dr...  

excellent post - thanks for the education!

 
By: stitch : January 17th, 2010-03:29
this is why I like this forum! It would be great if "technical" posts like this could be grouped into a sticky thread or a wiki area for future reference - or is there one already? stitch

Three or more barrel combinations

 
By: stromer : January 17th, 2010-05:34
go by the same principles as a set of two. However combinations of the things said about two barrels could theoretically be used with three or more. However I do not know about any example where this was done in reality. If anybody does I would be glad to... 

Thank you...

 
By: MiniCooper : January 17th, 2010-05:37
I hope, my friend, that you are enjoying your Sunday..... Cheers

You know that is cold and raining outside

 
By: stromer : January 17th, 2010-06:09
but I am enjoying my spare time with indoor acvities nevertheless. I hope you do also. If it gets too bad outside you can still listen to your ding-ding-thing ;-) Best, Martin

I know....

 
By: MiniCooper : January 17th, 2010-06:23
I just finished my run outside.... rain, cold and I enjoyed it..... Now I am going to relax....if my kids let me do so ... Cheers

Too many hints my elusive PP

 
By: moc : January 17th, 2010-06:29
I had the feeling you have something you haven t revealed yet........Or Have I missed something lately???Too many clues...does it ring???PM if you want...Yours,Mo.

Well Mo....

 
By: MiniCooper : January 17th, 2010-09:00
There is something.... and a photo was posted but at the end of a long thread...... As you understood... there are clues.... I am preparing a post..... Cheers ps pm sent

Thank you Martin,

 
By: moc : January 17th, 2010-06:27
for this clear explanation.Sometimes we talk a lot about things we know little about.This is the beauty of sharing.Yours,Mo.

Excellent, Martin, you did...

 
By: FanFrancisco : January 17th, 2010-06:36
hi Martin, thank you so much indeed for the excellent note with very self-explanatory drawings. since i have posted the questions to this forum, my son asked me any people responded to our post so far. you know we have been waiting for such well-written a... 

Winding multiple barrels

 
By: stromer : January 17th, 2010-08:52
Our passion sometimes can be a lonesome one (that's why we meet in this forum, right?) and so I like it very much if someone not deep into watches is asking questions. We cannot leave them alone with their questions. In this case your son asked and I am v... 

thanks

 
By: sancerre : January 17th, 2010-10:22
Thanks for the continued explanation. I was going to ask what the relationship was between a barrel and a spring, but I think you have answered it. Is it correct that each barrel contains its own spring, thus is an individual reserve of power? --Sancerre

thanks once again...

 
By: FanFrancisco : January 18th, 2010-06:30
Martin, thanks very much for the detailed reply. my son just started learning physics subject in his school, he is interested in your reply. he needs to take some time for him to digest this a bit more. he won't answer more question for now. in any case, ... 

Thanks Martin, Highly informative! Moderator, please...

 
By: nikolaj : January 17th, 2010-11:03
I think a link to this post should be placed on HoMe for the general benefit of those of us not so fully conversant with the mechanics of our beloved watches. Thanks Nikolaj

Thanks a lot, Martin, for having taken the time to make it clear.

 
By: amanico : January 17th, 2010-11:39
Much appreciated, my friend. As per Nikolaj's suggestion, I will save your post in our new blog post, if you don't mind. Best, Martin. Nicolas

Thanks, Martin!

 
By: dxboon : January 17th, 2010-11:48
I love your explanation and drawings. Your post was very informative. I appreciate all the time you took in creating these examples for all of us to enjoy. Cheers, Daos

Thank you very much, Daos, I receive

 
By: stromer : January 17th, 2010-13:28
so much from most of you that I gladly grab my chances to give back as much as I can. If I only had more oppertunities to meet you gals and guys in person! Best, Martin

Some illustration...

 
By: Maverik : January 17th, 2010-22:53
Very nice of you to explain it so clearly! Last week I was searching for some material on caliber 878. Although there is not much available I found the following illustration. It shows very nicely how the barrels are placed and connected. Caliber 878 illu...  

Rik, thanks for the link...

 
By: FanFrancisco : January 18th, 2010-06:55
i didn't know we can play watchmaking game in LeClub. should try it out soon. thanks, stefan