OWNER’S MANUAL PowerTap SL2.
Copyright Copyright 2005. All rights reserved. No part of this publication may be copied, photographed, reproduced, translated, transmitted electronically or placed on digital media without the prior written consent of Saris Cycling Group, Inc. Trademarks Saris Cycling Group, Inc , PowerTap and the PowerTap logo, are all registered trademarks of Saris Cycling Group, Inc. All other product, brand, or trade names used in this manual may be trademarks or registered trademarks of their respective owners.
About This Manual Thank you for your purchase of the CycleOps PowerTap SL2.4. PowerTap technology is the ultimate measure of performance by providing real-time feedback on your training intensity. No other equipment will give you greater performance return on your investment. This manual describes the proper use and maintenance of the PowerTap SL2.4. Every person, independent of skill level, should read at least PRECAUSTION: IMPORTANT prior to use of the PowerTap.
Table of Contents About this Manual Precautions: Important.....5 System Overview.....7 The PowerTap System.....7 Preparing for Installation.....7 Compatibility.....8 Wheel Building.....8 System Installation.....9 General Computer Operation.....12 Display Levels.....12 Display Modes.....12 Finding Sensors Clearing Data Buttons.....12 Power Conservation.....13 Computer Navigation.....14 Power Function.....14 Torque Function.....15 Zero Torque.....15 Speed Function.....16 Multi-Function.....
Precautions: Important • Before beginning any exercise program, consult your physician. • Keep your eyes on the road. Do not become overly engaged with the PowerTap display. We recommend familiarizing yourself with computer functions while stationary. • The computer, receiver, and hub are water resistant, not water proof. Avoid sustained water contact and do not deliberately place the PowerTap or its components in water or under highpressure sprays. Therefore caution should be used when riding in rain.
Precautions: Important, cont. • The PowerTap wheel does not include a quick release skewer. CycleOps recommends using a steel skewer. • Both sides of the PowerTap should be built using a 3x spoke lacing pattern. Because of the design of the PowerTap, torque is transmitted through the hub to the non-drive side. For additional questions please consult WHEEL BUILDING. • Failure to adhere to these precautions may cause premature failure or incorrect operation of the unit and may void the warranty.
System Overview THE POWER TAP SYSTEM The PowerTap system includes a power-measuring hub which measures torque and wheel speed. This information is transmitted to a computer mounted on the handlebar or stem. Heart rate data is transferred via A coded telemetry signal from the chest strap monitor. The data is then integrated to display current, average, and maximum biometric information. PREPARING FOR INSTALLATION The PowerTap SL2.4 hub comes either alone or in a pre-built wheel.
System Overview cont. COMPATABILITY The PowerTap SL2.4 hub is compatible with Shimano 8, 9, and 10 speed systems or Campagnolo 8, 9, and 10 speed systems. Freehub bodies may be interchanged. Reference FREEHUB REPLACEMENT for further instructions. The PowerTap is available in 130mm and 135mm axle lengths. Only insert the correctly spaced PowerTap hub into your frame. For example, only use a 130mm-spaced hub in a 130mm road frame. Do not force the hub into any frame.
System Overview cont. SYSTEM INSTALLATION 1. Insert Wheel Into Frame Insert the PowerTap SL2.4 wheel into the frame. Make sure the axel is correctly positioned in the dropouts and secure the wheel in place with a steel skewer. 2. Attach Computer Shoe to Handlebar or Stem The shoe can be mounted on either the handlebar or stem. Secure the receiver shoe with cable ties. Slide the receiver shoe in the direction of the arrow as depicted in either FIGURE 2A or 2B depending on mounting location. 2A.
3. Place Computer into Shoe FIGURE 5 Place the computer into the mounting shoe on the handlebar or stem. Line up the slots on the base of the computer with the bracket and slide computer toward the rider (FIGURE 5). NOTE: Ensure the computer is fully inserted onto the receiver shoe for proper data transmission. 4 Heart Rate Monitor Strap Position the heart rate monitor strap on your torso as pictured in FIGURE 6. The strap should rest just beneath the pectoralis muscles of the chest.
General Computer Operation DISPLAY LEVELS The computer has three (3) main display levels: Top Middle Bottom Power Speed Multi-Function TRANS. ICON POWER DISPLAY WATTS INTERVAL DISPLAY NOTE: These locations only apply to trip and interval modes and does not apply to Cycle Computer or Heart Rate Monitor Function. See COMPUTER SETUP 4 to customize display options. DISPLAY MODES The computer has two (2) main modes of operation: 1) Trip 2) Interval 365 3 25 MODE (LEFT) Changes active mode MI D 58.
2) Hold [MODE] or [SELECT] - a single button press and hold of either [MODE] or [SELECT] for 2 sec. Used for initiating a new Interval. 3) Press [MODE] and [SELECT] - simultaneously press and release of both [MODE] and [SELECT]. 4) Hold [MODE] and [SELECT] - simultaneously press and hold both [MODE] and [SELECT] for 2 sec. NOTE: Continuing to hold longer than 2 sec. and releasing will clear all data.
Computer Navigation POWER FUNCTION The top level of the main display shows current, max, and average power readings. 1) Press [MODE] to scroll the cursor to the top line of the main display 2) Press [SELECT] to toggle through the power function options. For accurate power readings it is important to frequently zero the torque, see ZERO TORQUE. FIGURE 9 Current Power Power is displayed in watts from 0-1999 in 1 watt increments.
TORQUE FUNCTION FIGURE 12 000 3 25 Shows the torque placed on the hub in inch-pounds. To display torque in trip mode: MI 1) Press [MODE] to scroll the cursor to the top line of the main display. 2) Press [SELECT] until the current power function is displayed. D 58.I0 3) Hold [SELECT] until the word ‘WATTS” begins to flash. A blinking “WATTS” display indicates the torque function is currently displayed. 4) Press [SELECT] to return to the current power function. (FIGURE 12).
SPEED FUNCTION The middle level of the main display shows current, max, and average speed readings. 1) Press [MODE] to scroll the cursor to the middle line of the main display. 2) Press [SELECT] to toggle through the speed function options. FIGURE 13 Current Speed Speed is displayed in either miles per hour (MI) or kilometers per hour (KM) up to 99.9 mi/hr or km/hr in 0.1 mi/hr or km/hr increments. Current speed readings are displayed when only “MI” or “KM” appears below the middle line.
MULTI-FUNCTION DISPLAY FIGURE 16 365 3 25 Distance (D) Total trip or the selected interval distance in interval mode is displayed in miles or kilometers from 0.00 to 999.99 (FIGURE 16). WATTS MI 1) Press [MODE] to scroll the cursor to the bottom line of the main display. D 58.I0 2) Press [SELECT] to toggle through the multi-function displays until the “D” icon is displayed. NOTE: Distance is displayed in the same units as speed.
Cadence (C) Cadence is measured at the hub by analyzing the way a rider applies torque through the pedal stroke since there are natural power differences in the pedal stroke. The rate of pedaling is shown from 20 to 240 RPM. NOTE: An optional wireless cadence sensor is available to measure cadence at the crank. FIGURE 18 365 3 25 WATTS MI C 89 1) Press [MODE] to scroll the cursor to the bottom line of the main display.
Average Cadence (C & AVG) The average cadence displays data since the last time data was cleared in trip mode or the selected interval in interval mode. Average cadence is displayed in RPM. 1) Press [MODE] to scroll the cursor to the bottom line of the main display. 2) Press [SELECT] to toggle through the multi-function displays until the “C” and “AVG” is displayed.
Heart Rate ( ) FIGURE 22 Current heart rate is shown up to 255 beats per minute (BMP). You must wear the heart rate chest strap to enable the heart rate measurement function. NOTE: The WATTS PowerTap SL2.4 uses a coded chest strap. 3 365 25 MI 1) Press [MODE] to scroll the cursor to the bottom line of the main display. I72 2) Press [SELECT] to toggle through the multi-function displays until the “ displayed.
Average Heart Rate ( AV) This value is a running average of the heart rate in BPM. If there is no heart rate information this will display as 0. FIGURE 23 365 3 25 WATTS 1) Press [MODE] to scroll the cursor to the bottom line of the main display. MI 152 2) Press [SELECT] to toggle through the multi-function displays until the “ AV” is displayed. (FIGURE 23) INTERVAL MODE AV FIGURE 24 The computer has two display modes.
INTERVAL MEMORY MODE To access stored interval data for the previous 9 intervals only: 1) Enter the interval mode hold [MODE] until “INT” appears on the left hand side of the display. 2) Press [MODE] to scroll until the “INT” flashes. NOTE: INT now constitutes a fourth level of display. 3) Hold [SELECT] and the memory icon (”M”) appears next to the interval number (FIGURE 25). 4) With “INT” flashing, press [SELECT] to advance to the interval you wish to view.
Computer Setup The setup feature has four (4) main modes. You do not have to complete all four to change settings. Please reference each mode to determine the correct location to begin. NOTE: The com puter illustrations for each mode display the factory default settings. FIGURE 26 COMPUTER SETUP MAIN MENU 1) Press either [MODE] or [SELECT] to activate the computer. NOTE: The version of firmware is displayed upon startup. The most updated firmware version is available at www.cycleops.com.
COMPUTER SETUP 1 This setup menu includes: time of day, date, storage rate, wheel circumference, units of measure, odometer. NOTE: You are unable to move back to a previously viewed settings. You must restart setup 1 to make corrections. You may hold [MODE] and [SELECT] to save and exit setup. Set t Ed 1) From the computer setup main menu press [SELECT] and scroll until the number one (1) is flashing. Press [MODE] to enter setup mode.
5) Press [SELECT] to toggle through digit values to set minutes in time of day. Press [MODE] to save. Year Std 6) Press [SELECT] to toggle through digit values to set year, month, and date. Press [MODE] to save. 03 0 1 - 0 1 c Month Day Std e r c 1 7) Press [SELECT] to toggle through storage rate values (1, 2 seconds). Press [MODE] to save. NOTE: Different storage rates yield different amounts of total storage time. Changes to the storage rate does not effect display information.
TABLE 4 - Common Wheel Circumferences Tire Size Circ. (mm) Tire Size Circ (mm) 24 x 1 1753 27 x 1 1/4 2152 26 x 1 1913 700C Tubular 2094 26 x 1.25 1953 700 x 20C 2084 26 x 1.5 1986 700 x 23C 2096 26 x 2.0 2055 700 x 25C 2108 26 x 2.125 2070 700 x 28C 2116 27 x 1 2125 700 x 32C 2136 27 x 1 1/8 2139 700 x 38C 2170 Std mi 1 9) Press [SELECT] to toggle between English or Metric units. Press [MODE] to save.
COMPUTER SETUP 2 This setup menu includes: rate of display for watts, speed, and cadence. NOTE: You are unable to move back to a previously viewed settings. You must restart setup 2 to make corrections. NOTE: These settings do not effect the data stored for download. This function can be used to allow better pacing during time trial efforts. A greater rate of display allows for a slower update of the display.
COMPUTER SETUP 3 This setup menu includes: zero readings for power, speed, and cadence. NOTE: You are unable to move back to a previously viewed setting. You must restart setup 3 to make corrections. NOTE: These settings are useful for determining you average when pedaling only and do not effect the data that is stored for download. PRO 3 AV WATTS s 0’ 1) Press [SELECT] to toggle between yes and no for zeros included in average of watts. Press [MODE] to save.
COMPUTER SETUP 4 This setup menu includes: sleep time, locations of display, cadence source, cycle computer mode, heart rate monitor, and auto start/stop. You are unable to move back to a previously viewed settings. You must restart setup 4 to make corrections. PRO 4 4 1) Press [SELECT] to set how many minutes the computer will stay “awake” after not receiving a valid speed or heart rate signal. Press [MODE] to save. NOTE: The shorter the sleep time the better the battery life.
PRO watts 4 4) The PowerTap can be used as a cycle computer or heart rate monitor. Press [SELECT] to toggle through mode options. mi watts, mi, and ( ) = power meter mode mi, and ( ) = cycle computer mode ( ) = heart rate monitor mode Press [MODE] to save. PRO watts 5) Press [SELECT] to toggle through auto start options. 4 mi data mi, and data = allows trip time to count when wheel speed is registering. Trip time stops 3 sec. after if speed is not registered.
COMPUTER SETUP 5 This setup allows the CPU to learn a new device or sensor such as the hub, heart rate strap and optional cadence sensor. NOTE: This process only needs to be used if a new sensor or hub is being used in conjunction with your CPU or vice versa and if batteries are changed in the hub or chest strap. There are 2 Learn sequences, 1 and 2. Learn 1 is used when you have switched sensors or the CPU and there are no other like bikes with PowerTap SL2.4 within a 30’ radius.
6) Follow the above steps for any additional sensors you may be using, such as the heart rate strap, speed and cadence sensors.
Maintenance & Specifications The following information will help you keep your PowerTap SL2.4 running properly. If you are not familiar with hub maintenance please consult a professional bicycle mechanic before servicing. During the course of any repair do not remove the torque tube. There are no user serviceable parts inside. Special tools are required for reassembly and calibration. If problems are suspected contact Saris Cycling Group. BEARINGS The power measuring components inside the PowerTap SL2.
-Install spacers per the illustration. -Install axle. -Apply 2 grams of high quality freehub grease to the ratchet ring. -Grease the V seal and place it on the freehub and install onto shaft. -Replace end nuts. Torque end nuts to 12 lbs-ft.
COMPUTER BATTERIES The PowerTap SL2.4 has batteries in the hub and computer. Computer batteries typically need to be changed every 400 hours of use. The computer will also say “low bat” when the computer battery needs to be changed. This message is displayed after a “clr” is performed. To replace computer battery (Type CR2032), remove the computer from the mount.
HUB BATTERIES Normal battery life in the hub is 400 hours of actual ride time. Use #357 or EPX76 Silver Oxide type batteries and always replace batteries in pairs. Alkaline type batteries give shorter life and poorer performance. NOTE: After replacing batteries in the hub you need to Learn the device codes. See computer setup 5. BATTERY REPLACEMENT - Unscrew the plastic battery cover. Use a spanner wrench or bench vise opened wide to get it started if stuck.
TEST MODE 1) From the computer setup main menu press [SELECT] and scroll until the letter “t” is flashing. Press [MODE] to enter setup mode. 2) Press [MODE] to scroll through the different test modes as shown by the number. NOTE: Press and hold [MODE] and [SELECT] simultaneously returns to standard operation. 0 - Model and version. Displays the model on the middle line and version number on the bottom line. 1 - LCD Test Press [SELECT] all the LCD segments are displayed.
on the left side. Press [SELECT]. The bottom line will say “run” and then “yes” if it passes the test correctly. If the pins are not shorted together or there was a problem, the display will say “no”. This test can be repeated by pressing [SELECT]. 6 - Fast Memory Test This tests the memory in the computer. Press [SELECT] and “run” is displayed on the bottom line. When the test is completed and it passes, it says “yes”. If the test should fail, the bottom line will say “no”.
Troubleshooting No display on computer screen · Computer is asleep – Press [MODE] or [SELECT] on the computer to wake up the computer. · Batteries need replacement - replace the computer batteries as shown on pages 14-15 of the User Manual. · Computer is too cold- operating temp. is 32 to 110 degrees Fahrenheit Computer display is on, but there is no transmission icon · Hub is asleep - spin the wheel to wake up the hub.
Power seems incorrect ·Torque value is not zeroed to manually zero torque go to current watts and hold down the select button until watts disappears. Torque is now being displayed. To zero torque hold down the select button until the value reads zero. To exit torque mode press select once. If read zero the torque does not seem to recalibrate the unit call Saris Cycling Group customer service at 1-800-783-7257.
pick up heart rate. Watts - Real-time display of the effort you are putting in to pedaling the bike. This is your power reading. **If you press the [SELECT] while the cursor is pointing to Watts the line changes to "inch-lbs". This is the raw torque value that is being applied to the hub, NOT your power in watts. Cadence (C) - The number of pedal revolutions per minute. The rate of pedaling is shown from 0 to 140 RPM.
Saris Cycling Group, Inc. 5253 Verona Road Madison, WI. 53711 1-800-783-7257 16034D-2.4 Patents issued and pending.
