Jackpipe,jackpipe wrote: LOL, that about sums up how useful I think a tourbillon is for me - Weren't they invented for stationary clocks, not for watches, which get a fair amount of averaging out their orientation relative to the direction of gravity anyway, just due to arm movement, sleeping, etc?
On the other hand, I have just flown to somewhere hot and sticky, and probably at a different elevation to home. I notice my C5 aviator is now running about 5 seconds/day fast, compared to almost total accuracy at home. Are temperature/pressure supposed to affect accuracy, and what horological mechanisms exist to counter these factors?
I’ve seen small fluctuations up to 5 seconds per day with my C5 without going anywhere. Can’t explain it. It could be just differences in what you do day to day. The differences in how much the mainspring is wound up and/or wound down depending on what you do may be the answer. Hairsprings use to be affected by temperature changes and so came the compensating split wheel balance which expanded and contracted with temperature. Modern hairsprings are not as affected but not 100%. It’s anyone’s guess. A 5 second deviation is nothing out of the norm. Should you suddenly see a 20 second difference than something’s up.
Russ