[StanX]

Zitat von captain hook

Ja, hab ich schon gesehen. Aber ist Rotor prinzipiell besser als Osymetric? Und lösen die neuen Kettenblätter mein "Problem", dass sie an eine Shimanokurbel müssen? Zumindest von den "normalen" Rotor gabs doch immer ne Shimanospecialversion, wo es nur eine Position gab?!

Rotor hat halt ten vorteil das man die Position einstellen kann, wenn man denn die Richtige Kurbel hat.

Bei Rotor habe ich auch das hier gefunden.

Rotor Q-Rings help to minimize the time spent in the dead spot while pedaling. While oval chainrings have historically been controversial, we believe that allowing a rider to fine tune the chainring position offers opportunities to minimize the dead spot never before realized with conventional chainrings. The Q-Rings are elliptical; the Biopace and O.SYMETRIC chainrings are asymmetrical. The specific elliptical shape of the Q-Ring provides a very smooth uniform pedaling stroke; there is no sudden acceleration movement. Biopace chainrings are designed so that the maximum equivalent tooth size is at the dead-spot. Q-Rings have the minimum equivalent tooth size at the dead-spot which enables you to pass through the dead-spot quicker and with less stress to your knees. Q-Rings take into consideration static forces from your legs and the inertia of the cyclist and the bicycle. This maximizes the efficiency and comfort of conventional cranks. The Rotor patented OCP System enables you to customize the position your Q-Rings to suit your individual riding habits, body geometry, strength and position on the bike.

und zur Kompatibilität

Yes. The new version of Q-Rings have a bevel to allow a better fit, and work on most 130BCD cranksets like Shimano Dura-Ace 7800, FSA-SLK, Zipp 300, Truvativ, etc. They may or may not work on certain versions of Stronglight cranksets. All models of road and compact Q-Rings are compatible with both Shimano and Campagnolo drivetrains, 9/10/11 speed, and are specially beveled to fit most cranksets such as Dura-Ace 7800, Ultegra, FSA SLK, FSA K-Force, Zipp 300, Truvativ, and most other models. One exception being that the normal outer 50T 110BCD compact Q-Ring does not fit Shimano, FSA BB30 or SRAM BB30 compact cranksets, but we have a special outer ring (Called OCP3-50) that will fit these cranks. All of the inner Q-Rings fit with no problem.