Rotor

Yes, Rotor Power sensors (2INPower and INPower) have a claimed accuracy of ±1%. The 2INPower measures left and right power separately, via two gauges integrated into the crankset. The INPower measures only the left side with right-side extrapolation (Single Leg Power). Rotor power meters are ANT+ and Bluetooth compatible and sync with all training platforms. Their key advantage: they measure directly on the bottom bracket axis, without any error accumulation from the pedals or cranks.

Yes, Rotor was founded in Madrid (Spain) in 1999 by Pablo Carrasco. The brand first made its mark with oval chainrings, then developed complete groupsets (Uno and Kaptor). Rotor Uno is a 1x13-speed mechanical-hydraulic groupset offering an alternative to Shimano and SRAM. The brand is present in WorldTour teams through its cranksets and power meters.

Rotor cranksets (ALDHU, VEGAST) are compatible with Shimano bottom brackets (BBRight, BSA, PF30) via adapters. The Rotor BBRight standard (30 mm) requires a specific adapter on frames with a BSA bottom bracket. SRAM DUB cranksets (30 mm) use the same axle diameter. Rotor 13-speed cassettes can only be used with Rotor Kaptor rear derailleurs.

Rotor Uno is the first groupset to offer 13 speeds with a single chainring, providing a wide range of gear ratios without a front derailleur. The Rotor 13-speed cassette (10-52 teeth) offers a range comparable to a classic 2x11 double chainring setup. The drivetrain is hydraulic and mechanical, with no battery to recharge. This system is popular with gravel riders and competitors looking to simplify their drivetrain. Its drawback: the proprietary cassette requires a dedicated freehub body.

Rotor oval chainrings are not suitable for all cyclists and a period of adjustment is required. Generally speaking, cyclists who use a ‘push technique’ (high-leg) when pedalling benefit more from Q-Rings. Cyclists with a 'round technique' pedalling style (pulling through the entire cycle) benefit less from oval chainrings. The adjustment period is 2 to 4 weeks. A posture analysis and an indoor test (power meter) can help quantify the personal benefit.

The OCP (Optimum Chainring Position) defines the orientation of the oval chainring relative to the crank arm. Rotor recommends starting at OCP3 (mid-position), then adjusting according to how it feels. OCP1-2 positions shift the point of maximum effort to the start of the pedal stroke. OCP4-5 positions shift it to the end of the pedal stroke. This adjustment is made using a simple tool (chainring screw) and takes 5 minutes.

Yes, the Rotor range has expanded into gravel with the Kaptor groupset and oval Q-Rings chainrings for gravel. Rotor gravel chainrings are compatible with 110 BCD and are available in oval or circular shapes. The Uno 1x13 groupset is particularly well-suited to gravel riding due to its wide range of gear ratios. Rotor also offers gravel-compatible cranksets with integrated power meters.

Rotor BBRight bottom brackets use standard bearings that are accessible and can be replaced without special tools. Clean and relubricate every 3,000–5,000 km depending on conditions of use. Removing the crankset requires the specific Rotor spanner (BCD 130 or 110 depending on the model). Rotor publishes maintenance videos on its website and YouTube channel.

Rotor offers a 2-year warranty on all its components (cranksets, power meters, cassettes). Rotor after-sales service is available through authorised dealers. In the event of a manufacturing defect in a power meter, Rotor will repair or replace it. Wear parts (chainring spacers, bearings) are generally not covered by the warranty.