Rotor Q-rings

Rotor Q-rings are the invisible weapon for top performance. Meet the ultimate secret bike weapon. The ease of customization and performance benefits make this system an undisputed upgrade for any performance-oriented cyclist: Your “always skeptical and infinite” cycling friends will not believe your incredible sprints and powerful climbings due to your Rotor Q-Rings.

Rotor Q-Rings increase your ability to generate power by mimicking a Rotorsystem crank set during the power transmission phase and minimizing the dead spot zones. By extending the time in the power transmission phase (where 90% of all power is generated) and moving your legs smoothly trough the critical ‘dead points’ while simultaneously increasing the weak pedal input in these zones, Q-Rings give you just that extra advantage to ride in front.

Your legs can not deliver a constant force throughout the whole day. See picture 1 for this. The green line shows the strength in both legs. Round chainrings give the same resistance to your legs everywhere in every phase of the circular pedal movement.
The purple line shows the resistance that your legs experience while pedalling. Obviously, this is much more consistent with the power you actually deliver! Therefore everyone experiences an easier and more flexible cycling movement with Rotor Q-rings!

In addition to the big advantage: “Better power distribution during pedal movement”, the Rotor Q-Ring is another positive spin-off, namely: The better strength distribution improves the muscles. Triathletes have a double advantage here: The difference between “walking legs” and “bicycle legs” is a lot smaller when using Rotor Q-Rings!

Figures 3 and 5 show clearly which muscles are used during the pedal movement at any time. Also, the thickness of the colored line implicates how much power the muscles supply. It is clear that during the part between “quarter over” and about “9 for half” there are 3 strong muscle groups at work. Here you should use a high gear! It is also clear that from “2 for half” the power present is considerably low so a low gear! This principle of high gear low gear has been implemented in the shape of the Rotor Q-rings.

Do not you know exactly what size you need for your current crank? Look here.

The biggest mistake and “messenger” of bad news about Q-Rings is the fact that the Q-Rings are being thrown off the bike to fast: Read more here …

One of the studies on the effect of Qrings: click here

I already have a perfect stroke. I Do not Need Help

There are few people who understand that one of the main reasons for pursuing a “perfect stroke” is to compensate for the weakness in the dead spot. Having a perfect pedal stroke does not solve the problem of dead spots: no matter how perfect your stroke is, certain muscles in your legs will always be stronger than others and a vertical crank can never be a useful force on the chain transfer. Rotor’s Q-Rings are designed with subtle variations in the diameter of the chainrings, enhancing the benefits of a smooth pace by limiting variations in the following factors:

  • power development
  • treatment in the rotational speed of the cyclist’s legs
  • movement of the cyclist’s bike and the bike itself.

We agree that a smooth pedal stroke is crucial for cycling efficiently. The Rotor Q-Rings design shows that Rotor wanted to go one step further by looking at the relationship between the power curve, the mass inertia and the pace. The largest power of a cyclist is produced in the downstroke, regardless of each step technique. Mounting Q-Rings reduces power development, resulting in a more fluid and natural pedal stroke. The reason why Q-rings are even better is that according to biomechanical principles
developed variations in the diameter of the chainrings result in more power and less lactic acid. This results in a significant improvement in endurance and strength.

The strong point: positioning and adaptability. The shape and ovalization of the Q-Rings is not the only specialty : what makes them really special is the basic position and the possibility of adaptation. The problem with other oval chainrings is that they work only in one fixed position. As soon as the cyclist moves his hips, the crank angle changes to the maximum and minimum force transmission point, which changes the position of the chainring relative to the cassette. The challenge was to design the Q’s in such a way that during a change of seat position, the slowness of the legs and the inertia of the bike would be compensated. The well-known basic position of Q-Rings, based on power and inertia studies, is one of the reasons that Q-Rings feel so natural. The revolutionary OCP (Optimum Chainring Position) system allows the cyclist to choose from a number of settings within the narrow but crucial range of useful positions. Why? Because each cyclist has a different driving style, another bike adjustment and another pedal goal. The OCP system allows you to find your personal optimal setting of the Rotor oval chainrings so that they work best for your bicycle style, bike, and terrain.