General tourbillon power storage time

How long is the power reserve of the Horage Tourbillon 1?

The mainspring barrel was lifted straight from the K2, improving the proposed 60-hour power reserve to a full five days.

How does a tourbillon cage rotate?

The wheels of the going train deliver power from the mainspring to this pinion, which causes the cage to rotate. Tourbillon cages may take on a variety of styles, but like a balance wheel, should have high inertia while being as light as possible. Now that the cage is rotating, how is power delivered to the balance wheel?

How do tourbillons work?

They are devices; mechanisms that house escapements. The most common escapements used in tourbillons are the detent and the lever. The lever (Swiss anchor) may be arranged at a right angle to the balance or in a straight line, as in carousel tourbillons, with the pivot point of the lever being centred in the cage.

Should a tourbillon cage be poised?

It should also be noted that just as the balance is poised (one should do so even when fitting to a tourbillon), the cage itself should be poised. This is usually done by adding weight to the cage opposite the position of the escapement, though there are other ways around it.

Why did Breguet create a tourbillon?

The purpose of Breguet’s inspired creation was to combat the poise errors found in the balance, balance spring and escapement in vertical positions by rotating these timekeeping elements. (For more on the tourbillon and its history, read “A Brief History of the Tourbillon, available here.) So how does a tourbillon achieve this?