The concept of V-shift (by Vecter proto engineering) is a design where each drum track is located on an individual drum section, and the various drum sections are linked to each other by springs in such a way that the sections can rotate against each other. This design creates the possibility to pre-engage the upcoming gear, before extracting the current driving gear. When engaging the upcoming gear, the drum section for the currently engaged gear is preloaded by the spring, but can’t extract due to the gear being loaded by the drive torque. At the moment the upcoming gear starts driving, the current driving gear is being unloaded, at which point the preloaded spring creates a big enough torque on the drum section to disengage the current driving gear. This results in a smoother and quicker gear shift than possible with a traditional design selector drum.