PowerTap Track Hub Instructions
Designed for TRACK USE (VELODROME) ONLY
THE POWERTAP SYSTEM
The PowerTap system includes a power-measuring hub which measures torque and wheel speed. This information is transmitted to a handlebar or stem mounted computer. The data is then integrated to display current, average, and maximum biometric
information.
PACKAGE CONTENTS
1x PowerTap Track hub
1x Lock ring
2x Axle bolts
1x User Guide
WHEEL BUILDING
Contact a wheel building professional or dealer for assistance in building the PowerTap Track hub into a wheel. Due to the design
of the hub, the load pattern is not the same as a conventional hub. Slotting the hub flanges to accommodate bladed spokes is not
recommended and will void the warranty. Complete wheel building hub dimensions are listed below. To determine proper spoke
length, please reference a spoke length calculator.
IMPORTANT:
For your safety, the non-drive side of the PowerTap hub must be built
with at least a 2x lacing pattern. Because of the patented PowerTap design, torque is transferred through the hub to the non-drive side. Failure
to adhere to this precaution will void the warranty.
INSTALLING THE COG
Slide the cog onto the •
splined adapter.
Install the lock ring. The lock •
ring is LEFT HAND THREADED.
Use a standard Shimano Dura •
Ace bottom bracket wrench to
tighten the lock ring to 25-30
Nm (18.5-22.1 ft-lb) torque.
COMPATIBILITY
The PowerTap Track hub is compatible with White Industries splined cogs only. •
The PowerTap Track hub uses a 120mm bolt-on axle. Only insert the PowerTap Track hub •
into a frame designed with 120mm rear dropouts. Do not force the hub into any frame. Doing so may cause failure of the frame, hub, or both, and will void the warranty. Contact your
dealer or Saris Cycling Group to address any special compatibility concerns.
Measurements Non-drive Drive
Hub center to flange: 21.5mm 28mm
Flange diameter: 70mm 70mm
Spoke hole diameter: 2.5mm 2.5mm
Hub spacing 120mm
AUTO-ZERO
In order for the PowerTap Track hub to accurately measure power, the Auto Zero function on the computer must be turned off.
On Joule:
Pair Joule to the PowerTap hub, as described in the Joule •
User Guide.
Press [MODE] or [Interval] to turn on Joule. •
Press [MODE] until the Main menu screen is displayed. •
Press [JOYSTICK] to enter the Sensors menu.•
Press [JOYSTICK] to enter the Power Sensor menu.•
Use [JOYSTICK] to highlight the appropriate sensor and the •
press [JOYSTICK] to select.
In the sensor menu, scroll down to Auto Zero and press •
[JOYSTICK].
Use [JOYSTICK] to change “Y” to “N”. This turns the Auto Zero •
function off for this sensor. This only applies to this sensor,
so this will not change any settings for other power meters.
On Cervo:
Pair Cervo to the PowerTap track hub, as described in the •
Cervo User Guide.
Press and hold both [MODE] and [SELECT] buttons until •
you see the Set Edt 12345 screen.
Press [SELECT] to scroll to “3” and then press [MODE] to •
enter
Press [MODE] three times until “YES” is displayed on the •
bottom line
Press [SELECT] to change to “no”. This turns the Auto Zero •
function off. If/when you switch back to a normal
PowerTap hub, make sure to change this back to “YES”.
Note: Because the Auto Zero function is turned off, it is
recommended to manually zero the hub on a regular basis.
ANT+ Sport
The PowerTap “Plus” Series uses ANT+ Sport wireless technology that allows you to use the PowerTap with other ANT+ Sport
devices that are capable of displaying power. If you are using a device other than CycleOps Joule or Cervo to display power, please
consult the user guide that came with the device. Note: While the PowerTap Track hub sends an ANT+ signal, it is recommended
by Saris Cycling Group to use a CycleOps Joule or Cervo for the purposes of using the manual zero function.
MAINTENANCE & SPECIFICATIONS
During the course of repair, DO NOT remove the torque tube. There are no user serviceable parts inside. Special tools are required
for assembly and calibration. If problems are suspected contact Saris Cycling Group.
BEARINGS
The power measuring components inside the PowerTap hub are highly complex and should only be serviced by Saris Cycling
Group. The bearings in the PowerTap hub do not require any adjustment. The bearings are sealed and do not require replacement. Field replacement can cause permanent damage to the power measuring electronics and result in compromised sealing
and performance. If bearing problems are suspected please contact Saris Cycling Group.
TECHNICAL SPECIFICATIONS
Accuracy 1.50%
Signal Transmission 2.4 GHz
Operational Temperature 0-40 C/32-104 F degrees
Battery Life 300 hours
Battery Type #357/303 or EPX76
(2 per hub)-(IEC-SR44)
DATA TRANSMISSION
The PowerTap hub transmits data on both the
Saris network and ANT+ Sport simultaneously.
Data transmitted on the Saris network:
Applied power and torque•
Speed (angular velocity)•
Distance (wheel rotation)•
Cadence•
Hub battery condition•
Data transmitted on the ANT+ Sport network
HUB BATTERIES
Normal battery life for the hub batteries is 300 hours of
actual ride time. Use #357/303 or EPX76 Silver oxide batteries (IEC-SR44) and always replace in pairs. Alkaline batteries
have a shorter life and less performance.
Power only message:
Power•
Cadence•
Torque at wheel message:
Torque •
Speed•
BATTERY REPLACEMENT
Distance•
Use the battery cap removal tool (part# 7015) to unscrew the plastic cap on the non-drive side of the hub. Using the tool, unscrew
the plastic battery cover to expose the battery holder and batteries.
WARRANTY
The PowerTap hub is warranted to the original retail purchaser to be free from defects in materials and workmanship. Warranty coverage is valid
to the original purchaser only and proof of purchase will be required. Electronics - 1 year
THIS WARRANTY DOES NOT COVER:
Normal wear and tear.•
Any damage, failure or loss caused by accident, misuse, neglect, abuse, improper assembly, improper maintenance, or failure to follow in-•
structions or warnings in Owner’s Manual.
Use of products in a manner or environment for which they were not designed. This product was designed for use in a velodrome only.•
LIMITATIONS
The foregoing warranties are in lieu of and exclude all other warranties not expressly set forth herein, whether expressed or implied by operation
of law or otherwise, including, but not limited to, warranties of merchantability or fitness for a particular purpose. Saris Cycling Group shall in no
event be liable for incidental or consequential losses, damages or expenses in connection with its exercise products. Saris Cycling Group’s liability
hereunder is expressly limited to the replacement of goods not complying with this warranty or, at Saris Cycling Group election, to the repayment of an amount of the purchase price of the exercise product in question. Some states do not permit the exclusion or limitation of implied
warranties or incidental or consequential damages, so the preceding limitations and exclusions may not apply to you.
PROCEDURES
Warranty service will be performed by Saris Cycling Group or an authorized Saris Cycling Group Dealer. The original purchaser must provide
proof of purchase. Service calls and/or transportation to and from the Authorized Saris Cycling Group Dealer are the responsibility of the purchaser.
Saris Cycling Group will have the option to repair or replace any product(s) which requires warranty service.•
Saris Cycling Group will replace any unit that is structurally defective with a new unit or replace the unit with a unit of equal value.•
In the event a product cannot be repaired, Saris Cycling Group will apply a limited credit reimbursement toward another CycleOps Power-•
Tap product of equal or greater value.
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