Shimano Index Shifting or SIS - Index shifting is a system where the control has discrete stops. Hub gears by design are indexed, but for derailleur systems, indexing was an innovation. Each stop corresponds to one position of the derailleur. This allows the cyclist to change gear without having to adjust each time, as in friction shifting.
Dual SIS - Dual-control. Moving the brake lever perpendicular to the direction to control the brakes operates the shift mechanism.
Adica e compatibil cu schimbatoare/derailleur Dual SIS. Deci da, are legatura cu schimbatorul de foi. Nu neaparat cu cel pe care-l ai pe bicicleta, doar daca nu ai si manete dual control.
Din cate inteleg, angrenajul e compatibil cu schimbator de foi dual sis, care e la randul lui compatibil cu manete de frana dual control (ca la cursiere).
Cel putin asta am inteles eu din ce-am gasit pe gugal.
