PowerTap SL+ Track Hub - Manual

THE POWERTAP SYSTEM
The PowerTap system includes a power-measuring hub which measures torque and wheel speed. This information is transmit-
ted 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 de-
sign, torque is transferred through the hub to the non-drive side. Failure
to adhere to this precaution will void the warranty.
PowerTap Track Hub Instructions
Designed for TRACK USE (VELODROME) ONLY
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
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. Do-
ing 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.
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.
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 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”.
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.
Note: Because the Auto Zero function is turned off, it is
recommended to manually zero the hub on a regular basis.