Rotor Q Compact Rotor Chainring Set 110BCD

Rotor Q Compact Ring Set

QRings offer some of the performance advantages of the Rotor 'System' to those with standard cranksets with no weight penalty. Any veterans of our sport may remember previous incarnations of "oval" chain rings from Shimano's attempt called Bio-Pace in the early eighties and oddities like Polchlopek in the late seventies. These designs were ultimately flawed and di nothing to further the arguments to support this slightly skewed way of thinking. Today however things are different and CAD systems allow engineers to better plan the mechanical advantges ovalised chain rings can provide...

QRings increase your power by emulating a Rotor System crankset in the power stroke and by minimizing the intensity of the 'dead spot' zones. By extending the time you spend in the power stroke (where 90% of all power is produced) and smoothly accelerating the legs through the critically weak 'dead spots', simultaneousley magnifying the feeble pedal input in these zones, Q's give that extra advantage you need to get ahead.

Rotor's QRings are designed with smooth diameter variations, which magnify the benefits of a smooth spin by reducing variations in: power production, rotational inertia a of the cyclist legs, and directional inertia of the cyclists body and bike.For the vast majority of cyclists power is produced in the down stroke of the pedal cycle, irrespective of pedalling technique. By installing QRings, the cyclist's power production is smoothed out, making a fluid spin more natural. The thing that makes Q's even better, is that the biomechanically inspired diameter variation results in more power output and less lactates giving a genuinely free increase in endurance and power. Orientation and adjustability is key.

The shape and ovalization of QRings isn't everything: what really sets them apart, is the basic orientation and the possibility to adjust it. The problem with normal ovalized chainrings is that they only work in one set position on a bike. As soon as the cyclist's hip moves, the angle of the crank at the minimum and maximum power points changes, which in turn changes the orientation of the chainring in regards to the cassette. The key was to make Q's compensate for the effects of varying riding positions, leg inertia and bike inertia. The basic orientation of QRings, based on power and inertia studies, is one of the reasons QRings feel so natural. The revolutionary narrow variance OCP (Optimum Chainring Position) system gives the cyclist the possibility to choose from an array of settings within the small, crucial range of useful orientations. Why? Because everyone has a different riding style, a different bike setup and a different pedalling style. The OCP system guarantees you personal optimization of the chainrings to make them work best for you, with your riding style, your bike and the terrain you're dealing with.

It all sounds complicated but a little perseverance can result in a useful improvement in performance...

• 7075 hardened alloy chainrings
• Rotor's Q rings are designed to maximise power output during less efficient phases of the pedal cycle
• Acclimatisation is required to fine-tune the timing of the rings
• Approximate weight of a pair of matched rings: 159grams