I don't know but I will have an answer for you in 24-48 hours
Sent from my iPhone using Tapatalk
| The Breitling Watch Source Forums https://www.breitlingsource.com/phpBB2/ |
|
| 806 - how long to run on a full wind https://www.breitlingsource.com/phpBB2/viewtopic.php?f=11&t=57827 |
Page 1 of 2 |
| Author: | buddman [ Wed May 20, 2015 12:42 pm ] |
| Post subject: | 806 - how long to run on a full wind |
If you fully wind an 806 and run the chrono, how long should you expect it to run before stopping? I assume the mechanism uses more energy when engaged uses and this does not run as long. Any ideas? |
|
| Author: | Eric_navi [ Wed May 20, 2015 12:43 pm ] |
| Post subject: | Re: 806 - how long to run on a full wind |
I don't know but I will have an answer for you in 24-48 hours Sent from my iPhone using Tapatalk |
|
| Author: | buddman [ Wed May 20, 2015 12:47 pm ] |
| Post subject: | Re: 806 - how long to run on a full wind |
Eric_navi wrote: I don't know but I will have an answer for you in 24-48 hours Sent from my iPhone using Tapatalk I'm thinking you will have an answer for me earlier 
|
|
| Author: | wills0_9 [ Thu May 21, 2015 10:12 am ] |
| Post subject: | Re: 806 - how long to run on a full wind |
21 and counting! Will |
|
| Author: | buddman [ Thu May 21, 2015 11:50 am ] |
| Post subject: | Re: 806 - how long to run on a full wind |
wills0_9 wrote: 21 and counting! Will nice one. You have a stronger mainspring than mine! I only got 18. |
|
| Author: | Supermoto [ Thu May 21, 2015 12:16 pm ] |
| Post subject: | Re: 806 - how long to run on a full wind |
I find my 67 Navi does around the 30hr mark and I always run the chrono and that's off the original mainspring |
|
| Author: | 806er [ Thu May 21, 2015 10:06 pm ] |
| Post subject: | Re: 806 - how long to run on a full wind |
in my opinion the power reserve from movement is the same and the power reserve don't be reduced faster by using the chrono function, but when using the chrono there are more movement parts, that have to work and for this reason it is possible (that means: it could be), that the movement stops working earlier than usual although there is still power reserve left. So we will have different results from different owner-tests (depending also from wheels-adjustment with help from eccentric screw, general movement condition, last service ...). regards Stephan |
|
| Author: | buddman [ Thu May 21, 2015 11:12 pm ] |
| Post subject: | Re: 806 - how long to run on a full wind |
806er wrote: the movement stops working earlier than usual although there is still power reserve left. regards Stephan Can you explain this? Why goes the movement stop if there is still power reserve in the mainspring? |
|
| Author: | 806er [ Fri May 22, 2015 1:45 am ] |
| Post subject: | Re: 806 - how long to run on a full wind |
because more movement parts has work together, when chrono is working and this needs a bid more power than for the usually watch function, specially if the parts are not 100% adjusted. A brand new correctly adjusted Venus 178 movement with also brand new mainspring, would offer us the longest chrono-function runnig time, because the usual power the mainspring give to the movement in that case is enough.also for the chrono. look at the picture  there you see the two wheels, that work together in usual watch function. Now, if using the chrono, the third wheel also have to work at the same time together with these two other wheels. They become in contact with each other by pressing the pusher to start the chrono. This contact in depending from adjustment of a eccentric screw works under pressure (more or less depending how near by the wheels work). At the same time the mainspring construction generelly should realise the same power over the whole reserve-time, but at the end of power reserve it is a bid less power and if the mainspring is old (a long time used) this "a bid less power" period will start earlier. So at least it is a combination of different reasons, therefore we have different results. regards Stephan |
|
| Author: | Roffensian [ Fri May 22, 2015 4:30 am ] |
| Post subject: | Re: 806 - how long to run on a full wind |
Basic physics, and just one concept at work. Torque from the mainspring has to overcome friction in the running train. Chronograph adds friction, low and / or old mainspring reduces torque. As soon as torque is insufficient to overcome the friction the watch stops regardless of 'how much' reserve is left. |
|
| Author: | buddman [ Fri May 22, 2015 4:38 am ] |
| Post subject: | Re: 806 - how long to run on a full wind |
Roffensian wrote: Basic physics, and just one concept at work. Torque from the mainspring has to overcome friction in the running train. Chronograph adds friction, low and / or old mainspring reduces torque. As soon as torque is insufficient to overcome the friction the watch stops regardless of 'how much' reserve is left. I understand - do have a phd somewhere way back there  , but I would have "assumed" (probable error) that the extra friction would have not have been so excessive to allow potential energy to remain in the mainspring once the chrono stopped. As such, I thought the overall energy needed would be more with the chrono engaged and as such the mainspring would fully discharge more quickly.
|
|
| Author: | bravo806 [ Fri May 22, 2015 12:44 pm ] |
| Post subject: | Re: 806 - how long to run on a full wind |
1955 806 , restored by chronodeco last fall ( AOC with new mainspring). 31 winds without the timer function, and 17 with. The sweep hand seems to stick/stop @ the 59 sec. mark,and will continue to run (if shaken often) for 20 winds. Seems like the timer function runs the main spring down faster ? |
|
| Author: | Roffensian [ Fri May 22, 2015 1:54 pm ] |
| Post subject: | Re: 806 - how long to run on a full wind |
Of course chronograph reduces reserve - there is only so much energy that can be stored in the spring and you need more of it to run the chronograph and regular time. And please don't shake your watch, regularly or otherwise! |
|
| Author: | Eric_navi [ Fri May 22, 2015 1:59 pm ] |
| Post subject: | Re: 806 - how long to run on a full wind |
This little AOPA was chugging along for 42 hours 33 minutes and 2 seconds before she decided to finally stop. With the chronograph going. I blame Craig  Sent from my iPhone using Tapatalk |
|
| Author: | buddman [ Fri May 22, 2015 2:02 pm ] |
| Post subject: | Re: 806 - how long to run on a full wind |
Totally brilliant |
|
| Page 1 of 2 | All times are UTC - 8 hours |
| Powered by phpBB® Forum Software © phpBB Group https://www.phpbb.com/ |
|