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PowerTap C1 Chainrings with Sensor

$699.99

Item # PAP000Q

Select options
  • Select options
  • Set, 110 bcd 53/39t ($699.99)
  • Set, 110 bcd 50/36t ($699.99)
  • Set, 110 bcd 52/36t ($699.99)
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Item # PAP000Q

Description

PowerTap is back.

Over the last few years, PowerTap has quietly flown under the radar as other companies have made various forays and advancements in the power meter sector, but the brand was far from dormant during that time. The engineers over in Madison were busy putting the finishing touches on the brand new C1 Chainrings and Sensors, which demonstrate that PowerTap is still very much a relevant member of the market. Rather than clinging to its hub-based power measurement and proclaiming it as the only power standard worth paying attention to, PowerTap now offers a chainring and pedal option. Based on the C1 Chainrings' simple setup, accessible price tag, and accuracy, we'd predict it'll become an important new player in the market.

The Chainrings are manufactured by FSA as a one-piece design in three different teeth configurations, but a caveat to consider is that the chainrings are only compatible with five-bolt 110mm bolt circle diameters, so they won't work with every crankset on the market right now. We'd imagine this will change in the future as PowerTap gets through the C1's initial introduction then refines its design to offer more options, and it's a small price to pay for the affordability of the system if you're already using compatible crank arms.

Once mounted, the chainring divides the stroke in half to measure left and right-side power, a feature not commonly included on power meters in this price range, and it uses motion-based electronics to keep the system from adding bulk to your frame with multiple sensors. While you're pedaling, a built-in accelerometer records cadence as well. According to PowerTap, the system calculates power with the brand's standard +/-1.5% accuracy, and it auto-zeroes as soon as pedaling stops to eliminate the need to pedal in reverse in the middle of a ride. For added convenience, the chainring is compatible with both ANT+ and Bluetooth SMART, so once it's set up, you can head out for a ride without a lengthy setup using your existing head unit.

  • Chainring system measures power from your crankset
  • Splits pedal stroke to approximate dual-sided power
  • Zeroes-out on its own as soon as pedaling stops
  • Compatible with major bike computers and head units

Tech Specs

Number of Rings:
1
Teeth:
50 / 36 t, 52 / 36 t, 53 / 39 t
Bolt Circle Diameter:
110 mm
Connection:
ANT+, Bluetooth SMART
Compatible Components:
see sizing chart
Recommended Use:
road cycling
Manufacturer Warranty:
2 years

Weight

Weight

Actual Weight

Actual weights are measured in-house by the Competitive Cyclist team.

Have questions? Chat with a Gearhead

Grams

Oz

Set, 110 bcd 53/39t
356g
12.56oz
Set, 110 bcd 50/36t
n/a
n/a
Set, 110 bcd 52/36t
n/a
n/a

Claimed Weight

Claimed weights are provided by the vendor.

Have questions? Chat with a Gearhead

150 g

Size Chart

PowerTap

The compatibility chart below, represents cranks released in the last 3 - 5 years. Many of the older cranks are not easily accessible so have not been tested. The below list is not comprehensive and is dictated by crank availability. It will be updated frequently as new models can be confirmed compatible.

PowerTap C1 Crank
The compatibility chart below, represents cranks released in the last 3 - 5 years. Many of the older cranks are not easily accessible so have not been tested. The below list is not comprehensive and is dictated by crank availability. It will be updated frequently as new models can be confirmed compatible.
COMPATIBILITY
ManufacturerModelModel YearBCDCompatible?Notes
Shimano

105-FC 5650

 

110

Y

assumed compatible based on others

  105-FC 5750   110 Y physical crank test
  R565   110 Y* assumed compatible based on others
  Sor   110 Y* assumed compatible based on others
  Tiagra   110 Y* assumed compatible based on others
  Dura-Ace 7950   110 Y physical crank test
  Ultegra 6750   110 Y physical crank test
FSA SL-K Light - 386EVO up to 2014 110 Y physical crank test (5 bolt)
  Team Issue 386EVO   110 Y physical crank test
  Energy   110 Y physical crank test
  Gossamer   110 Y physical crank test
  Omega   110 Y physical crank test
  Trimax Alloy up to 2015 100 Y physical crank test
  Vero   110 Y* assumed compatible based on others
SRAM S900   110 Y physical crank test
  S950   110 Y physical crank test
  S500   110 Y* assumed compatible based on others
  Red - GXP   110 *Y assumed compatible based on others
  Force - GXP   110 Y physical crank test (10 spd)
  Rival   110 Y physical crank test (10 spd)
  Apex   110 Y physical crank test (10 spd)
Rotor 3D   110 Y physical crank test
Praxis Zayante M30   110 Y physical crank test
THM Clacivula SE up to 2015 110 Y physical crank test
Cobb Compact current 110 Y physical crank test
INCOMPATIBILITY
ManufacturerModelModel YearBCDCompatible?Notes
Shimano

105-FC 5800

 

110

N

4 bolt asymmetric

  Dura-Ace 9000   110 N 4 bolt asymmetric
  Dura-Ace 7800   110 N not 110BCD
  Ultegra 6800   110 N 4 bolt asymmetric
FSA SL-K Light - 386EVO 2015 110 N 4 bolt
  FSA SL-K Light BB30   110 N known incompatible
  K-Force Light   110 N known incompatible
  Gossamer BB30 2010 110 N physical crank test
  Trimax Carbon All 110 N known incompatible
SRAM S300   110 N single chainring crank
  S100   110 N single chainring crank
  Red 22   110 N hidden bolt design. shift ramps need to be clocked
  Red BB30   110 N not tested
  Force 22   110 N hidden bolt design. shift ramps need to be clocked
  Force BB30   110 N not tested
  Rival 22   110 N hidden bolt design. shift ramps need to be clocked
Cannondale Hollowgram   110 N known incompatible
Specialized S-Works Carbon   110 N known incompatible
Rotor 3D+   110 N known incompatible
  3DF   110 N known incompatible
Campagnolo Super Record   110 N crank arm attachment is not exactly 110
  Record   110 N crank arm attachment is not exactly 110
  Chorus   110 N crank arm attachment is not exactly 110
  Athena   110 N crank arm attachment is not exactly 110
  Centaur   110 N crank arm attachment is not exactly 110
  Veloce   110 N crank arm attachment is not exactly 110
Look Zed 2   multi N known incompatible

Reviews & Community

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Poor battery life

  • Familiarity: I've used it several times

Well the powermeter itself is working as expected and seems accurate and reliable.
I have to change the battery every month while I only ride 20 hours.
I am doing calibration before every ride as there is still a gap everytime I do it.

I am contacting powertap support in order to get more information about these 2 defaults.

Buying a 2nd set...

  • Familiarity: I've put it through the wringer

1st set works great on the training bike, so hooking up a 2nd set for my race day bike.

Avg. ride time: 5h 46m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Fail all around

  • Familiarity: I've used it several times

Basically if you want crappy support and a crappy product prone to failure get this if not look elsewhere. If i could give a 0 star i would.

i bought these through another company and thought hey this should be perfect for what i need. Nothing could be farther from the truth. the first C1 i got failed in a month. I had initial issues with the Ant+ signal dropping out. Called Powertap support they said to move my ant+ receiver. AKA its your fault not ours. HMM ya not so much when a week later no signal for ant or bluetooth. Call them back they send a new C1 out. forget to include an RMA for me to send the other one back (Geniuses i swear). A week of using the new C1 and now similar issue happens. The device will transmit for about 20 seconds and then fails to stay on. Call Powertap back up go hey did this already did all your trouble shooting. They respond initially after 3 days. i email them back and its now coming up on a week later. In the email they asked why i ddin't send them back the other one and i tell them no RMA. Thank the company i purchased it from will refund me the money i paid and already gave me an rma label. They took a grand total of 5 hours to respond.

I won't buy a powertap, sarris, or cycleops now as they are all handled by the same company and their support sucks and apparently so do their products.

Very odd. I have used several products from Powertap/Cycleops/Saris and they all have had excellent service, better than most companies I have dealt with. The C1 Powertap chainrings, I have been using FLAWLESSY for 6+ months and for the money they perform as expected and are an excellent addition to my training tool box.