Modernism
·They wind simultaneously.... manual and automatic
Doubtful manual winding doesn't top 2 barrels as with my 8806 I'm getting the specified PR having manually wound it.
The 8806 calibre is the evolution of the 8400 calibre hosted inside the Seamaster 300, it maintains the same 25,200 oscillations per hour and it guarantees a power reserve of up to 55 hours, thanks to its double barrel.
You are not manually winding one and the auto winder winding the other. That isn’t how it works.
They both wind and unwind together.
If you are not getting the full power reserve, you need to consider servicing it. It’s a 7 year old watch. If it hasn’t been serviced before, it sounds like it’s about that time.
"Quick update, after manually winding and then using my power winder to finish the winding process off the PR is now over 60 hours."
So to me at least the two barrels are working fine as is the time keeping. It would appear from the comments so far that both barrels should manually wind together so the question was how many turns should be required? I have done another 90 turns yesterday after the last test completed OK and have not used the automatic winding function this time.
OK, I wrote to Omega to get a definitive answer and this is what they have said regarding the 8500 movement:
"The 8500 calibre does have two barrels, but it's not one for manual winding and one for automatic - both barrels are for both methods.
Therefore a full manual wind of 65 turns should give the full 60 hour power reserve, even if the watch is not worn in that time. If it is only providing half of that, then the watch may need a service."
So my original winding of 40 turns giving me 30 hours of runtime my indicated my turns were on the small side <g>, so my 90 turn winding far exceeds the 65 as details above so I hope that give the full 60h run time, I will know later this week.
Thanks for all the suggestions/comments so far.
We already gave you the answers...
Both barrels wind and unwind together. Barrel 1 is where the input winding is and the fixed spring. Barrel two contains the slipping spring. The first wheel is driven off barrel 2 which then drives the rest of the train. In training it was explained like having two water jugs linked together at the bottom. If you pour water into jug 1, jug two will fill more or less at the same rate. The outlet is on jug 2, both jugs would empty more or less at the same rate.
In class at Omega they used this analogy to describe how it works: