Rotor Aldhu 110x4 50T 3D+ Shimano R9100 11V oval outer chainring

Oval chainrings compatible with the new Aldhu 3D+ cranks, Rotor's lightest crankset ever, but also compatible with 4-bolt Shimano® cranks. When mounted to Rotor's Aldhu 3D+ cranks, these Q-Rings can be adjusted in 1-degree increments. When mounted to Shimano® cranks, the chainrings are set to intermediate position OCP3, which is the position most frequently used by road riders.

Rotor believes that standard Q-Rings offer an optimal adaptation-stability-biomechanical balance for most cyclists.
 
Why Q-Rings?
Q-Rings boost your performance by varying drivetrain resistance during pedaling in line with your legs natural strengths and weakness. They make better use of the strongest muscle groups (increasing positive work) and compensate for the weaker zones in the pedaling stroke (reducing negative work).

Optimize your pedaling
Q-Rings make better use of your strongest muscles.
The muscles recruited during pedalling, their relative strength during pedalling and the torque produced as a crankset rotates are shown in the figures below. From these graphs, it is clear that a round chainrings’ constant level of resistance interferes with optimal pedalling dynamics.
A Q-Ring gives a silky-smooth “perfect spin” by smoothening out torque variations and making better use of your strongest muscles, visible in the smoother and fuller Graphs to the right: “Round ring vs. Q-Ring spinscan”.

Ride faster
Peer-reviewed scientific research has shown that Q-Rings offer a clear increase in performance compared to round chainrings. Elite level cyclists saw a 1,6 sec advantage in a 1 km TT study, generating 27W more power. For comparison, 60 mm aero wheels often claim 1,5-1,8 sec/km and 16W savings.
What does this mean when you’re riding? You will discover increased endurance, realize explosive sprints and see a newfound tenacity in climbs. You will find that you can stick with the hardcore group that usually drops you. You will become an improved version of yourself, ready to set new PR’s and discover a new depth of performance. Triathletes will notice reduced strain in the bike split and better run split performance.

Features

• Compatible with: Aldhu 3D+, Shimano Dura-Ace (R9100) and Ultegra (R8000) 11 speed crank arms.
• Material: Aluminum 7075, CNC.
• Ovality: 12.5%.
• BCD: 110x4.
• Color: black anodized.
• Real weight: 99 g.

Technologies

OCP (Optimum chainring position)
You can micro adjust the position of your Q-Rings to suit your riding style. Q-Rings use your leg muscles at a different rate than round Rings, thereby changing your intramuscular coordination of motor units. Thanks to the OCP (Optimum Chainring Position) of the Q-Ring, you will find your best position seeking both comfort and efficiency.
A standard crank in combination with the OCP of the Q-Rings, allows approximately 5 degrees of adjustment.

Pedal comfortably in all cycling positions
The OCP (Optimum Chainring Position) of the Q-Ring allows you to pedal comfortably in all cycling positions:

• Sitting
• Standing
• Climbing
• Sprinting