Patek Philippe

I don’t fully understand the mechanics enough to know what damage I’d be doing by letting it run full time. What’s an ok usage level? 1 hour per day? 5 hours per day? Is it a question of durability or damage? Meaning: if I let it run full time am I just g... 

The 5170 is a Horizontal clutch

This can be looked at several ways... 1 - From the standpoint of wear, the more parts that move the more potential for wear there is, so keeping the chronograph stopped in both a horizontal and vertical clutch means less parts moving. But IMO the wear is ... 

Thanks for sharing this advice, BTW

I guess I wasn’t clear with my question: the Omega calibers that he mentioned were either cam-actuated or horizontal clutch. What is the ‘allowed-for’ drop in amplitude for the vertical clutches? Or is it the same 40 degrees? Thanks again for tolerating o... 

Some horizontally coupled are 40, and some are 30. For vertical clutch chronographs, some are 30 and some are 20.

Stay safe my friend

Especially as I get the impression few people actually use their chronographs. Not a Patek but I recently had my Sinn 7750 serviced and the most obvious impact was much reduced amplitude. I typically use it 5 times a week for 30 minutes in a row for sever... 

But one that it is hard to get an answer on. I have 7 watches, none of which have a centre second hand, they are all with sub dial second hands. I really like to see the movement of a large second hand which, to me, is a really appealing representation of... 

actually fixed the problem in the 5170. Historically, high watches with horizonal clutches had gears which were ground to an angle, beveled if you will, so they would mesh better resulting a smoother engagement but also in less metal on metal and more wea... 

on the Patek site and they mention "the optimized tooth profiles" and I do not see the prior models caution never to leave the chrono running.

Thanks for checking with Patek website

The bottom line is that it's quite rate to have to replace any parts associated with horizontal coupling, and if it's done, it's not because of anything related to the coupling or running of the chronograph too much. No idea why they would advise not runn...