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Verve InfoCrank FAQ

General

Is it true that the Verve InfoCrank is the most accurate power meter I can buy?

Simply, yes! Verve positions its strain gauges within the crank arm (4 strain gauges in each arm). This unique location places the strain gauges directly in the path of torque so that the tangential force which pushes the bike forwards – not the twisting of the cranks, registers the output. Any two InfoCranks will be accurate to within 0.5% of each other all the way up to 3,000 watts – the best accuracy of any power meter ever made.

Does the InfoCrank give me true left and right power data?

Yes. The Verve InfoCrank locates a power meter on each crank arm, giving it the ability to measure true left and right power. While some power meters provide an estimated left/right power figure, only a select few can provide independent left/right data.

What is CPS technology?

Verve Cycling measures cadence internal to the cranks, using the strain gauges to read the tangential load. Their algorithm uses Crank Position System (CPS) technology, which is able to accurately detect cadence pulses regardless of power or pedaling style. With CPS, you have the accuracy of a magnet without having to have one mounted to your bike.

Will the InfoCrank work with my bike computer?

The Verve InfoCrank M30 power meter transmits data via the ANT+ wireless protocol so the power meter will be compatible with any head unit that supports ANT+. Note that in order to get left/right data, you will need a head unit that supports this functionality.

What is the warranty on the InfoCrank?

The Verve InfoCrank M30 power meter comes with a standard 2 year warranty.

Will the power meter work with my mountain bike?

No, it is intended for use on road/cross bikes only.

How much does the power meter weigh?

The InfoCrank M30 power meter weighs 690 grams (spider, spindle and crank arms).

 

Installation

How do I determine if the InfoCrank is compatible with my bike?

The Verve InfoCrank M30 power meter comes with a 110 BCD and a Praxis M30 30 mm spindle for its integrated bottom bracket design. The spindle is purpose built for the M30 bottom bracket exclusively. The power meter includes specific bottom bracket cups from Praxis so the power meter will fit 68 mm wide BB30, PF30, BB86, OSBB, or BSA (English Threaded) frames.

Your bike frame needs to have one of theses options:

  • ‘Standard’ BB30 (42 mm plain bore with no intrusions x 68 mm wide WITH the circlips)
  • ‘Standard’ PF30 (46 mm plain bore with no intrusions x 68 mm wide)
  • Accepts OSBB and does not have a preinstalled bottom bracket. Inner shell must be bare
  • English threaded 68 mm wide BB

The InfoCrank M30 power meter is not compatible with a BB30/PF30 bike bearing set up that is already pre-installed. The Praxis M30 bottom bracket must be installed with the InfoCrank.

If you have a BB30 that does not have the circlips, or a PF30/OSBB that does not have a clean bore all the way through the frame, the Praxis M30 bottom bracket provided will not work.

The InfoCrank M30 with the 30 mm spindle is NOT compatible with BB90 (Trek), BBRight (Cervelo), EVO386, or Cannondale BB30A.

We also sell the Verve InfoCrank 24 mm power meter which uses a Shimano 24 mm spindle and works on any Shimano 24 mm bottom bracket.

If you have any questions on compatibility, please contact us and we would be happy to help.

How difficult is it to install?

Installation of the InfoCrank is no harder than that of a normal crankset. You simply remove your existing crankset and replace it with the InfoCrank.

 

Battery

What type of battery does the power meter use?

The Verve InfoCrank M30 power meter uses SR44 silver oxide batteries. Make sure you purchase silver oxide batteries, not LR44 which are alkaline. Battery life with alkaline batteries will be much shorter.

How long does the battery last?

The Verve Cycling InfoCrank has a battery life of approximately 500 hours. This is compared to an average of approximately 300-350 hours for other power meters.

How do I change the battery on my InfoCrank?

  1. Using a standard 2 mm Allen (hex) key (usually the smallest one on a typical Bicycle multitool) undo the screw in the center of the battery cover
  2. Remove the cover
  3. Replace the batteries with two SR44 silver oxide batteries. Make sure the positive face (+) is uppermost
  4. Replace the battery cover. Take care tightening the screw, sealing is NOT dependent of screw torque. Slowly tighten the screw until it comes to a mechanical stop – do not tighten any further
  5. If you have magnets installed on your bike, rotate the cranks one full turn to take the cranks out of battery change mode. If you are not using magnets, swipe the magnet past the domed transmitted in order to take the cranks out of battery change mode

 

Firmware

What is the latest version of firmware?

The InfoCrank is currently on version .205.

How do I update the firmware?

  1. You’ll need an ANT+ USB stick to connect your laptop with your InfoCrank. All InfoCrank units come supplied with one ANT+ USB stick
  2. Download the firmware updater at http://www.vervecycling.com/firmware-updates/ and follow the instructions
  3. Insert fresh batteries into the InfoCrank
  4. Pass magnets over bulge to stop flashing
  5. Open updater, connect, follow prompts

Important note – Version .205 does not require magnet use. If however, magnets are detected on your frame, the firmware will “act” exactly as .204 version, utilizing the magnets to measure cadence.

 

Calibration

How often do I need to calibrate the InfoCrank?

With the InfoCrank, there is no need to perform a calibration or zero-offset before every ride. This is because the strain gauges are insensitive to temperature changes. It’s a get on and go power meter.

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