Power Meter User Manual
Statement of Compliance: SRAM LLC. Model#: 0808 FCC ID: C9O-MERC1 IC: 10161A-MERC1 Model#: 0815 FCC ID: C9O-MTB1 IC: 10161A-MTB1 This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: 1 This device may not cause harmful interference. 2 This device must accept any interference received, including interference that may cause undesired operation.
SRAM LLC WARRANTY EXTENT OF LIMITED WARRANTY Except as otherwise set forth herein, SRAM warrants its products to be free from defects in materials or workmanship for a period of two years after original purchase. This warranty only applies to the original owner and is not transferable. Claims under this warranty must be made through the retailer where the bicycle or the SRAM component was purchased. Original proof of purchase is required.
LIMITATIONS OF WARRANTY This warranty does not apply to products that have been incorrectly installed and/or adjusted according to the respective SRAM user manual. The SRAM user manuals can be found online at sram.com, rockshox.com, avidbike.com, truvativ.com, or zipp.com.
TABLE OF CONTENTS POWER METER ANATOMY ���������������������������������������������������������������������������������������� 6 INSTALLATION ������������������������������������������������������������������������������������������������������������� 7 MAGNET INSTALLATION �����������������������������������������������������������������������������������������������������������������������7 BB CUP MOUNT INSTALLATION �������������������������������������������������������������������������������������������
P OW E R M E T E R A N ATO M Y Crankarm Spider Serial Number/ANT+ ID Battery Compartment LED Cadence Sensor Ring Cadence Sensor Ring Label 6 Power meter Anatomy
I N S TA L L AT I O N M AG N E T I N S TA L L AT I O N Quarq power meters measure cadence using a magnet, or if a magnet is not present, by using an accelerometer that is built into the power meter. Using a magnet is the best method for measuring cadence; it is accurate to +/- 1.5% regardless of environmental conditions. When properly installed, the magnet should be in line with the cadence sensors and within 2-8 mm of the sensor ring.
B B C U P M O U N T I N S TA L L AT I O N The BB Cup Mount is only compatible with threaded bottom brackets. It does not work with frames that have bearings pressed into the bottom bracket (BB30, PF30, etc.). Frames using threaded bottom bracket adapters (ie. SRAM GXP30 BB Adapter) may use the BB Cup Mount if the mount is installed onto the threaded drive side bottom bracket cup. 1. If necessary, remove the existing cranks and bottom bracket. 2.
C A B L E G U I D E M O U N T I N S TA L L AT I O N The Cable Guide Mount should only be used when the cable guide is fastened with a screw. If the cable guide is fastened with a rivet, use the Bottom Bracket Cup Mount or Adhesive Putty instead. NOTIC E Do not allow the magnet to contact the power meter. When properly installed, the magnet should be in line with the cadence sensors and within 2-8 mm (1/16”-3/8”) of the sensors. 1. Remove the existing cranks. 2. Loosen the cable guide screw.
A D H E S I V E P U T T Y I N S TA L L AT I O N The included adhesive putty will permanently attach the magnet to your frame. Other non-permanent attachment options include: hot glue, some epoxies, electrical tape, or similar adhesives. NOTICE Do not allow the magnet to contact the power meter. When properly installed, the magnet should be in line with the cadence sensors and within 2-8 mm (1/16”-3/8”) of the sensors. Depending on your frame, you may need to stack magnets to achieve this distance. 1.
C R A N K I N S TA L L AT I O N Install the crankset and bottom bracket assembly onto your bike according to the manufacturer’s instructions. Once the crankset has been installed, the power meter must not contact the frame or any other components. Please contact Quarq customer service with any frame compatibility questions. An updated list of compatible frames is available at Quarq.com. SET UP LED FUNCTIONALITY The LED provides useful information about the operating condition of the power meter.
PAIRING Before pairing your power meter to a computer, make sure you are at least 10 meters (30 feet) from any other ANT+™ device. This will keep you from accidentally pairing to another person’s ANT+ device. To pair the power meter with an ANT+ computer, first spin the crank backwards 2-3 times to wake the power meter and begin broadcasting ANT+ messages. The power meter will shut off after 10 minutes of inactivity. Follow the pairing instructions specific to your ANT+ computer.
ZEROING The power meter must be zeroed to compensate for environmental changes. The power meter can be zeroed two ways: Auto Zero and Manual Zero. When to perform the Zero procedure For best results, you should perform the Manual Zero procedure before each ride. The Auto Zero procedure can be performed instead of a Manual Zero or if your computer cannot send a “Calibrate” command; if the temperature changes greatly during your ride; or if you are getting inaccurate data.
ZEROING CONTINUED Auto Zero Spin the crank backwards for 4-5 complete revolutions. The LED will flash one time when zeroing is complete. The computer will not display the Zero Offset value. The Auto Zero procedure may be performed while coasting with the rider on the bike, stopped using one or both feet, or by hand with the rider off of the bike. Zero Offset Stabilization With a new power meter or newly installed chainrings, the zero offset takes 2-3 rides to stabilize.
CHAINRINGS C H A I N R I N G I N F O R M AT I O N On power meters with OmniCal™ you can swap chainrings without impacting accuracy. They do not need recalibration when you change chainrings or chainring sizes. Power meters with OmniCal™ only require re-calibration when moving from two chainrings to a single chainring, like moving to a Force CX 1 X-Sync chainring. XX1 power meters do not have OmniCal™. They are factory calibrated for 32T and 34T X-Sync chainrings.
C H A I N R I N G I N S TA L L AT I O N When installing chainrings you must align the chainring tabs and derailment pin so they are in line with the crank arm. Tighten the SRAM steel chainring bolts to 10 N·m (88.5 in-lb). Tighten other chainring bolts according to the manufacturer’s instruction.
MAINTENANCE AND CARE B AT T E RY I N F O R M AT I O N • The power meter is powered by a CR2032 coin cell battery. • Do not use any tools to remove the battery cap. Using a tool to remove the cap from the base of the battery compartment can damage or break the entire compartment. • Use your hand to unthread the lid counter-clockwise. The battery should be installed with the “+” facing out. Reinstall and hand tighten the battery cover after the battery is replaced.
