POWERTAP Hub rear Shimano G3C
How to make the lightest power measurement system even easier and smooth-running?
Of course, with the help of ceramic bearings. With only 315 grams they now weigh even less than the "normal" G3 hub and defies Thanks to the improved bearing also the longest and toughest race. A new development is the Powertap hub with a wider flange and a 15 mm axle for more rigidity and a lower hub diameter for less inertia.
The rear hub for everyone who wants to know it exactly: heart rate, cadence, power consumption and performance are just a few of the many measured variables of this system. The evaluation can be performed in real time at the Joule display or later on PC. In order to optimize their training to the last detail.
The main element of Powertapnabe are strain gauges inside the hub, which are glued to a part of the hub. When pedaling, the hub component deforms minimal (at the microscopic level) and the conductivity of the expansion elements is changing - from the performance is derived.
Powertap the only power measuring system is that measures the performance of the hub. This has the great advantage that it can be easily used on multiple wheels. Powertap provides access to real-time performance measurement with an accuracy of + / - 1.5%.
Note: Powertap uses the transmission system ANT + with the result that they are not tied to the computer "Joule" from Powertap. It can all devices that support ANT + are used with the hub (eg Garmin Edge 500 Garmin Edge 800, O-SYNCE navi2Coach).
Training Stress Score (TSS)
Performance (current, average, maximum)
Heart rate (current, average, maximum)
Cadence (current, average, maximum)
new electronics for fast and easy service of the hub (electronics is located in the hub cap)
Connection: Wireless 2.4GHz ANT + wireless data transmission (also smartphone / Garmin / O SYNCE possible)
Count: 20, 24, 28, 32
Freewheel: Shimano | SRAM 11-speed compatible
bearing: Ceramic bearings
Required battery: CR 2032
Weight: 315 g (hub)
Spoke hole diameter: 2.5 mm
Spoke bolt circle diameter left: 57 mm
Spoke bolt circle diameter on the right: 57 mm
Flange distance: 55.4 mm
Flange left: 38 mm
Flange right: 17.4 mm
Delivery: Powertap G3 rear hub
Please follow the instructions for battery regulation