The veteran power meter company PowerTap has a new Bluetooth 4.0 option for its hub-based system that is compatible with most modern smartphones. The PowerTap GS Zipp 202 is one of a few complete wheelsets the company is selling that add power meter functionality with only a very small (130g) weight penalty.
BikeRadar received a test set of the GS wheels with DT Swiss internals. The PowerTap GS Zipp 202 set weighs 1,510g/3.33lb (630g front, 880g rear), plus 41g for the pair of titanium skewers. A stock Zipp 202 wheelset, by contrast, weighs 1,380g/3.04lb.
The GS wheels can swap between Bluetooth and ANT+, the wireless signal that most cycling computers now use, with an exchange of a $130 end cap called a Powercap.
PowerTap gs zipp 202 bluetooth wheelset: the ‘powercap’ can be replaced to switch the power meter to ant+:Ben Delaney/Future Publishing
The Powercap comes in ANT+ or Bluetooth, and holds the battery that has a claimed 350hr life
Most power meters are ANT+ only, except the left-crank-based Stages power meter, which transmits in both ANT+ and Bluetooth simultaneously.
Claimed battery life is 350 hours for each of the Bluetooth and ANT+ Powercaps, which simply pull off the end of the hub after an exterior plastic nut is unscrewed.
Featuring PowerTap’s new black-and-orange scheme, the GS rear hubs feature DT Swiss axles, bearings, star ratchet, freehub body, end caps and straight-pull flange. The front hub is essentially a stock 240s DT Swiss model.
PowerTap gs zipp 202 bluetooth wheelset: in early testing, the gs appears to have the same reliability as other powertaps we have tested over the years:Ben Delaney/Future Publishing
The GS features DT Swiss hardware and, seemingly, PowerTap’s typical reliable power measurement
BikeRadar is testing the PowerTap GS against a number of other power meters, including the Garmin Vector pedals, an SRM and a Stages. After a few rides, the GS appears to have the same reliable consistency that PowerTap hubs have demonstrated for years. Here are two example rides, each done with four just-calibrated meters concurrently with four Garmin Edge 500s with matching recording settings. Check back soon for a complete review on this wheelset as well as a comparative report on power meters.