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Know your
movementEnhance your performance through
biomechanics with Q RINGS® & 2INpower®
Why Q RINGS®?
Q RINGS® are oval chainrings designed to increase performance of cyclists by reducing the impact of dead spots in the pedal rotation.
Q RINGS® become larger around the strong zones and smaller around the weak zones. Therefore time spent in the strong zones is longer, while time spent in the weak zones is shorter.
Everyone’s pedaling style is different, so weak and strong zones vary by a quantity of degrees from person to person. The ability to adjust the position of chainring orientation to the crank via OCP (Optimum Chainring Position) is the key to fit each unique user’s needs.
Biomechanicalbenefits of Q RINGS®Naturally smooth spin
Q RINGS® allow us take better advantage of the natural way we apply force during the pedal stroke while the fixed diameter of round chainrings don’t provide the same possibility.
Reduced knee strain
There are less accelerations and decelerations because knee speed remains more constant.
In the weak zone you need to apply more force with a round ring than with an oval ring because the diameter of the Q RINGS® becomes smaller. The resulting force representing the tension suffered by the knee is therefore less with Q RINGS® than with round chainrings.
Naturally smooth spin for everybody thanks to OCP.
If pedaling style rotates the pedal stroke, then the orientation of non-adjustable oval rings may not be appropriate.
OCP technology allows to rotate oval Q RINGS® to fit everyone’s pedaling style.
Increased performance
Reduced fatigue and faster recovery.Increased endurance.Stronger sprints and accelerations.
800 4,1%
0,6% 5,1% 6,6%
400
600
200
S1
685Std
Wat
ts
Sprinting power
578 499 476
715Oval 582 526 510
S2 S3 S4
20-second sprints, 40-second recovery: proceded by ramp test to ex-haustion. Dr. D. Alfredo Córdova Martínez, Dr. D. Gerardo Villa Vicente, Dr. D. Jesús Seco Calvo, D. Iban Latasa Zudaire. Analysis of physio-logical and biomechanical effects of oval variable gear chainrings (Q-RINGS) in comparison to conventional circular chainrings.
Crank angle
Knee speed depending on rings
Knee speedRound chainrings
How a pedal stroke looks like for each leg. What round rings ask the rider to do. What oval rings ask the rider to do.Color bars: Muscles activation
Knee speedQ RINGS®
30 36 42 48 54 60 66 72 78 84 80 96 102 108 114 120 126 132 138 144 150
Crank angle
Crank angle
Pedaling style
Pedaling style
OCP OCP
Pedaling style
Pedaling style
Torq
ueTo
rque
Torq
ue
Round chainringsOval chainrings
Outer circle = downstroke Inner circle = upstroke
0º
345º
330º
315º
300º
285º
270º
255º
240º
225º
210º
195º
180º
165º
150º
135º
120º
105º
90º
75º
60º
45º
30º
15º
400
200
200
100
OCA 88.5º
OCP #1 RANGE
OCP #5 RANGE
OCP #2 RANGE
OCP #4 RANGE
OCP #3 RANGE
0º
345º
330º
315º
300º
285º
270º
255º
240º
225º
210º
195º
180º
165º
150º
135º
120º
105º
90º
75º
60º
45º
30º
15º
400
200
200
100
OCA 92.5º
OCP #1 RANGE
OCP #5 RANGE
OCP #2 RANGE
OCP #4 RANGE
OCP #3 RANGE
Pedal analysis via TORQUE 360 feature
Optimise the round shape of your pedal stroke by minimising the dead spots. Identify your Optimum Chainring Position seeing the orientation of your pedal stroke and the angle it is centred through the OCA metric.
Optimise your pedal stroke technique to reduce the negative force applied in your upstroke.
OCP#1 OCP#2 OCP#3 OCP#4 OCP#5
73º-81º 79.5º-87.5º 86º-94º 92.5º-100.5º 99º-107º
Cranks orientation in relation to the Q RINGS®Combined pedal stroke
One-leg pedal stroke visual
OCA - OCP Range table
OCA
ROTORpowermeters
INpower® accurately measures power from the left leg via the axle and multiplies it by two to provide total power data.
2INpower® additionally measures power from the right leg via the right crank to provide precise data about power output and balance.
Both include the unique TORQUE 360 feature to demonstrate where improvements can be made to pedaling performance.
ROTOR’s OCP technology applied to INpower® allows oval Q RINGS® to be adjusted for optimized pedaling biomechanics.
INpower® technology
TORQUE 360 and OCA:
Pedal analysis Optimize your pedaling biomechanics by viewing your pedaling techniqueAt what angle your pedal stroke is centered – OCA (Optimum Chainring Angle)How you should orientate cranks in relation to the Q RINGS® based on your pedal stroke – OCP
MEASUREMENT:
Strain gauges in the axle for left leg power measurement. Strain gauges in the right crank for right leg power measurement (2INpower® only). Accelerometers for accurate crank angle position throughout the complete pedal stroke. Measurement rate 200 Hz.
ELECTRONICS & BATTERY:
Electronics inside axle for protection against dust & shocks.Electronics inside axle for temperature compensation and centered rotational mass. Antenna inside antenna cover on the right. 250 h battery life and rechargeable (2IN) 300 h battery life, AA easy to replace (IN).Different LED colors for different messages (2IN) Yellow LED when it is active (IN).
ROTORUser software
UniversalBottom Bracket
ANT+™Compatible
ROTORPower app
Bluetooth®Integrated:electronics inside
NEW features optimized for Q Rings®
Relationship betweenOCA and OCP
You can change the cranks position in relation to the Q RINGS® (OCP) to get the maximum efficiency considering your own pedal stroke style, based on your OCA data.
The OCP is a ROTOR exclusive techonology, which makes the difference between ROTOR oval chainrings and others.
Features
Balance
TORQUE 360
Proprietary ROTOR metrics
Optimum Chainring Angle (OCA)
Bluetooth Smart® & ANT+
Rechargeable Battery
Direct Mount
ROTOR Power smartphone app
Power, cadence,torque effectiveness and
pedal smootheness
Technology comparison table
OCP #1
OCP #5
OCP #2
OCP #4
OCP #3
MTB
MTB
ROAD
ROAD
Road
MTB
Features
Weight (g) 775 g (170 mm and
DM 50/34)
250 hrs(Rechargeable with
USB cable)
4 pairs of gauges
IPX7
2 pairs of gauges
300 hrs(Standard AA
Battery)
165 mm / 170 mm / 172.5 mm / 175 mm
673 g (170 mm and
DM 50/34)
Crank lenghts
Batterylife
Strain Gauges
Waterresistance
Technical Specifications
2INpower® & INpower® technical specs
Features
Weight (g) 695 g (170 mm and
DM Q Rings® 30T)
250 hrs(Rechargeable with
USB cable)
4 pairs of gauges
IPX7
2 pairs of gauges
300 hrs(Standard AA
Battery)
165 mm / 170 mm / 175 mm
609 g (170 mm and
DM Q Rings® 30T)
Crank lenghts
Batterylife
Strain Gauges
Waterresistance
Technical Specifications
Q RINGS® technical specs
Road
Q RINGS® 2x One-Piece Direct Mount Oval ChainringsSizes: 53/39, 52/36, 50/34, 48/32, 46/30 Weight: 184g for the 52/36
Q RINGS® 1x One-Piece Direct Mount Oval ChainringsSizes: 54, 52, 50, 48, 46, 44, 42, 40, 38Weight: 97g for the 42t / 125g for the 48t
Q RINGS® Spider Mount Oval ChainringsSizes: BCD 110x4 - 54/42, 53/39, 52/36, 50/34
Material: 7075 CNC’d aluminumColor: Matt black anodized and laser etchedTechnologies: OCP Mount, Direct MountOvality: 12.5%
MTB
Q RINGS® 1x One-Piece Direct Mount Oval ChainringsSizes: 40, 38, 36, 34, 32, 30, 28, 26 Weight: 67g for 30t
Q RINGS® DM Rex, DM Race Face®, DM SRAM® 6mmSizes: 34, 32, 30
Q RINGS® DM SRAM® 0mm / 3mmSizes: 36, 34, 32, 30
Material: 7075 CNC’d aluminumColor: Matt black anodized and laser etchedTechnologies: OCP Mount, Direct MountOvality: 12.5%
Q RINGS® 1x Direct Mount
Q RINGS® 2x One-Piece Direct Mount
Q RINGS® 1x One-Piece Direct Mount
Q RINGS® Spider Mount Individual
Q RINGS® 1x SRAM® Compatible
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