SRM SRM PowerMeter Rotor 3D - Road Bike Shop
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SRM SRM Powermeter Rotor 3D+
Price: $3695.00buy now
While Rotor burst onto the cycling scene through the effectiveness of its Q-Rings, the developers still recognized that there are those of us who prefer to stick with standard chainrings. This is why the Rotor 3D Road Crankset is also fully-compatible with round chainrings. Now, your options have once again increased with Rotor, as its developers have partnered with the king of power, SRM, in order to create the new SRM Powermeter Rotor 3D crankset. By combining the pinpoint measurement accuracy that SRM is lauded for with Rotor's lightweight rigidity, the SRM Powermeter Rotor 3D will satisfy the needs for anyone seeking the ultimate in power training. The 3D crankset is compatible with any BB30 or standard bottom bracket frame. And in terms of construction, the crankset features a CNC-machined alloy that uses Rotor's Trinity Drilling System in order to create three holes drilled end-to-end. Due to the larger axle-crank contact area of a BB30 crank, all three holes are able to be drilled from the axle side of the crank arm. This allows for further optimization of wall thicknesses, while also improving both the weight and the weight-to-stiffness ratio of the crank arm. The 3D design also allows Rotor to remove any unnecessary material from the core, without compromising the crank's strength or stiffness. As with any SRM deisgn, the goal of this pairing was to combine the stiff weight saving attributes of the CNC-machined alloy crank with an accurate wireless power recording system, only without scaling back the adored quality of either device. This is easier said than done. However, SRM pulled this off by leaving the crankarms unaltered, CNC machining a new rigid spider, and improving the design of the meter's strain gauges. The eight strain gauges for the Powermeter are a system of sensors that detect any resistance and vary their output when experiencing applied force. The next step is for the strain gauges to convert this data into electrical resistance s...