Uploaded August 2020 | Updated September 2026, 1 hour ago
In the Armin Strom Gravity Equal Force, the barrel integrates a new solution that helps transmitting equal force - hence the name of the model - to the balance, thus increasing the consistency of rate. Inside the mainspring barrel, a stop-works declutch system operates to limit the torque delivered to the balance, smoothly distributing power. This is a complete first for an automatic winding movement. More specifically, it is thanks to a Geneva wheel (aka Maltese cross) mounted to the barrel housing cover that the rotation of the mainspring barrel is limited to just 9 full turns out of a possible 12.5. This represents the central 72% of the mainspring’s potential torque curve, the flattest and most consistent portion. As the barrel housing unwinds around the arbor, a pin counts the rotations on the Geneva wheel until it reaches the locked position and prevents further unwinding. Read more about this amazing watch at timeandwatches.com/2020/04/hands-on-review-armin-strom-gravity.html
In the Armin Strom Gravity Equal Force, the barrel integrates a new solution that helps transmitting equal force - hence the name of the model - to the balance, thus increasing the consistency of rate. Inside the mainspring barrel, a stop-works declutch system operates to limit the torque delivered to the balance, smoothly distributing power. This is a complete first for an automatic winding movement. More specifically, it is thanks to a Geneva wheel (aka Maltese cross) mounted to the barrel housing cover that the rotation of the mainspring barrel is limited to just 9 full turns out of a possible 12.5. This represents the central 72% of the mainspring’s potential torque curve, the flattest and most consistent portion. As the barrel housing unwinds around the arbor, a pin counts the rotations on the Geneva wheel until it reaches the locked position and prevents further unwinding. Read more about this amazing watch at timeandwatches.com/2020/04/hands-on-review-armin-strom-gravity.html
