Mavic

Wintech E-Bolt Bike Computer

Mavic's Wintech E-Bolt Computer is the choice for those who love the skewer on their bike and don't want to sully their fork with an ugly sensor and zip ties. The special part of this system is the E-Bolt. It's actually a replacement skewer nut (perhaps bolt/nut gets lost in translation) that contains the speed sensor for the wheel. It weighs 28 grams (for reference, the standard Mavic skewer nut is about 10g).

Otherwise, the Wintech E-Bolt Computer is just like the Wintech FS -- the only difference is the sensor. You'll get 12 basic functions including: current, average, and maximum speed. Daily distance and total accumulated distance. "tendency indicator" (others call this a pace arrow), clock, stopwatch (turns on when the wheel turns on), and up to nine lap times. Cadence is optional. It uses WIN wireless digital transmission at 2.4 Gigahertz, a common wireless transmission frequency. You'll get reliable data and your bike will still look ultra sleek without any messy wires dangling from it.

The handlebar mount fits on the right side of 26.0 and 31.8mm diameter handlebars (shims included). The mount can adjust so it sits flat atop your stem, above your bars, or even in front of the bars. If you want cadence to register, you need to purchase a cadence sensor separately. Mavic makes both a bike-mounted cadence sensor and one that slips over your ankle, negating the need for a frame mount.