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Quarq D Zero Power Meter And Rotor Q Rings - Latest News


Best power meters: 9 tested

Things to consider when shopping for or using a power meter The Elsa RS is Quarq’s top-line ... any ANT+ compatible device. Rotor has also introduced its own software with new analysis tools for users ... read more

SRAM's Acquisition of PowerTap

The Hub was its product for north of a decade and a half, before putting PMs into chain rings and pedals. Why am I even talking about the Hub, you might ask. It’s the pedal! The pedal-based power ... read more

Anyone looking for a new bike?

It has a Pioneer power meter integrated with Shimano dura-ace 9000 mechanical with 172.5 Dura Ace cranks and Q Rings from Rotor. It's got Speedplay Zero pedals (red to match ... my local cycling club ... read more

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Cervelo TestTeam get testing in Belgium

They've now developed a heavier, stiffer version - the 3D - based on their time trial and track cranks, and this has been well received by Mighty Thor and co. Rotor's Q-Rings are another ... Cervelo ... read more


Easton/Race Face launch spindle-based CINCH power meter

On top of that, the entire system came in at 642g (175mm arms, 110mm spider, 50/34 rings, alloy bolts, 129mm spindle and all necessary mounting hardware). The new power meter is a spindle ... full ... read more

Tesla Polyphase Induction Motors

Slip at 100% torque is typically 5% or less in induction motors. Thus for f = 50 Hz line frequency, the frequency of the induced current in the rotor fr= 0 ... D, operate at 5% slip or less at full ... read more

SRAM AXS Drive Train

These chain rings come in pairs (except for the 1x rings). And to be clear, these are road cranks. MTB cranks increase the Q ... in Quarq and so forth. Groupkits start at about $2,800 and go to $4,100 ... read more

Kristin Armstrong’s Cervelo: Rotor Agilis crankset with Q-Rings and Quarq CinQo powermeter on 110mm BCD chainrings.

Kristin Armstrong’s Cervelo: Rotor Agilis crankset with Q-Rings and Quarq CinQo powermeter on 110mm BCD chainrings. | Photo: Joe Savola and Kristin Armstrong Slideshow: Click photo to view next image ... read more

Rotor InPower

one of the things that really matters to Rotor is how their power meters interact with their very own oval Q-Ring chainrings. With that in mind, Rotor use two things they call OCA (optimum chainring ... read more

Rotor launches QXL rings and POWER meter

Perhaps best known for its ovalized Q-Rings (US$290/£145/€209), Rotor has upped ... for left/right power, not two actual measurements. Ours is the only power meter on the market that has true ... read more



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