COEFFICIENT Cycling RR Carbon Road Handlebar Instruction Manual
- June 12, 2024
- COEFFICIENT Cycling
Table of Contents
COEFFICIENT Cycling RR Carbon Road Handlebar
Product Information
The product is a Coefficient RR Handlebar, designed and manufactured by Coefficient Cycling LLC. The handlebar has a trim line with a size of 14 inches in width and 8.5 inches in height. The back cover has a size of 3.500 inches, while the front cover and inside panels also have a size of 3.500 inches.
Read thoroughly before you ride
A BIG CONGRATS on the purchase of your Coefficient AR
Handlebar. Get ready to experience more comfortable and efficient riding!
Please read these installation instructions carefully. Our safety warnings are
especially key before youride the AR. An improperly installed handlebar can
lead to damage to the product (nulli-fying its warranty) or damage to your
bike. It could also result in loss of control of your bike, resulting in
serious injury or death.
These instructions are intended for a qualified bike mechanic, as we recommend that only a qualified bike mechanic install this handlebar. The handlebar is primarily responsible for your ability to steer and con-trol your bike, so it is of utmost importance to ensure that both the handlebar is in perfect condition and its installation is absolutely correct. DO NOT install clip-on handlebar extensions on the AR handlebar as it is not compat-ible with handlebar extensions typically used by time trialists and triathletes.
Installation
Step 1:
Inspect Your AR Handlebar
Check the handlebar from end to end for any damage. If there is visible
damage, please contact your local AR dealer or Coefficient Cycling LLC right
away. Do not install a visibly damaged handlebar.
Step 2:
Remove stem faceplate
Insert AR handlebar and reattach stem faceplate (Figures A & D)
Remove the stem’s faceplate. Verify that both the stem and faceplate fit properly on the handlebar and can easily be 100% fully seated. If the handlebar can not be fully seated with no effort, replace the stem with one that will not damage the handlebar.
Insert the handlebar so that it is perfectly centered in the stem, using the
AR’s imprinted guidelines. While holding the handlebar in position, reattach
the face-plate, then tighten the bolts in a cross pattern (Figure D) so that
the handlebar does not slip while testing for position fit. Do not exceed the
torque specs shared in STEP 5. Then make sure the tips of drops are (close to
or) parallel to the ground (Figure B). This position offers the ideal balance
of comfort and safety, where brake levers are easily reached – even from the
drops.
Step 3:
Install brake/shifter levers to your preferred position (Figure B)
Loosen the brake/shifter lever clamp so that the levers easily slide up the drops until they reach the clearly marked clamping zone. For correct setup, be sure that the bottom tip of the brake lever is level with or slightly above the bottom of the drops.
Have the rider stradle their bike and grasp the levers. Then carefully move the levers slightly inbound or outbound, up or down, until the rider locates the position that feels most comfortable. Next, have the rider place their hands in the drops. If the rider would prefer the levers a bit closer or farther away, then slightly rotate the handlebar either up or down – making sure that the drop tips remain within a 5° angle of the ground and the brake lever tips are above the bottom of the drop.
Note: Many brake/shift levers offer the ability to adjust “throw”. Throw is the distance between the brake lever and the handlebar drop.
Step 4:
Cable routing
Internal & external options(Figure C)The AR handlebar is designed for external
cable routing of mechanical and hydraulic lines. There are access ports for
internal routing of Di2 electronic wires only, if you choose not to route them
externally. There is also a small exit hole at the center-rear of the
handlebar for electronic wiring. Should you prefer to externally route brake
and shifter cables, we recommend taping the cables to the underside of the
handlebar.
Step 5:
Properly tighten stem & brake/shift levers (Figure D)
Now that the AR handlebar, the brake/shifter levers are properly positioned, use a torque wrench to tighten all bolts to manufacturers’ specifications. Using the cross method mentioned in Step 2, secure the handlebar by tightening the stem’s faceplate, making sure the gap between stem and faceplate is equal on both the top and bottom. Each faceplate bolt must be tightened to the exact Nm recommended by the stem manufacturer.
Be certain never to exceed the AR handlebar’s stem faceplate maximum torque
setting of 6Nm.
Now tighten brake/shift lever clamp bolts to the exact Nm instructed by the
lever manufacturer. Be certain never to exceed the AR handlebar’s brake lever
maximum torque setting of 8Nm.
Step 6:
Taping handlebar Once you have correctly positioned and properly tightened the
handlebar, stem and levers – the last item before riding is wrapping the AR
with handlebar tape. Note that due to the ergonomic shape of the handlebar, it
requires longer bar tape than average. Verify your preferred tape is long
enough, or purchase extra-long Coefficient bar tape.
Once you’ve carefully completed Steps 1 through 6, you ’ re ready to ride the AR!
Step 1:
Inspect your RR handlebar.
Check the handlebar from end to end for any damage. If there is visible
damage, contact your local Coefficient Cycling products dealer or Coefficient
Cycling LLC right away. Do not install a visibly damaged handlebar.
Step 2:
Remove stem faceplate.
Insert the Coefficient RR Handlebar and reattach stem faceplate (Figures A &
E). Verify that both the stem and faceplate fit properly on the handlebar and
can easily be 100% fully seated. If the handlebar can not be fully seated with
no effort, replace the stem with one that will not damage the handlebar.
Insert the handlebar so that it is perfectly centered in the stem, using the handlebar’s imprinted guidelines. While holding the handlebar in position, reattach the faceplate, then tighten the bolts in a cross pattern (Figure E) so that the handlebar does not slip while testing for position fit. You may need to temporarily rotate the handlebar up or down to easily install the stem bolts. Do not exceed the torque specs shared in STEP 5. Make sure the tips of drops are parallel to the ground (Figure B). This position optimizes the RR’s ergonomics and offers the ideal balance of comfort and safety, where brake levers are easily reached — even from the drops.
Step 3:
Install brake/shifter levers to your preferred position (Figure B).
Loosen the brake/shifter lever clamp so that the levers easily slide up the
drops until they reach the clearly marked clamping zone.
Internal & external options
The RR handlebar includes internal cable routing holes for both mechanical and
electronic brake and shifter cables. There are four (4) larger holes for
mechanical brake and shift cables (Figure C). The two exit holes near the stem
include slotted rubber grommets to help retain the cables. There are five (5)
smaller exit holes to accommodate electronic shifting wires (Figure D). The
two (2) under the tops are for remote shift buttons. There are 2 rubber
grommets provided for these wiring holes; poke a small hole in the grommet to
accommodate the wire when positioning a remote sensor near the center of the
handlebar.Should you prefer to externally route brake and shifter cables, we
recommend taping cables to the underside of the handlebar.
Step 5:
Properly tighten stem & brake/shift Levers (Figure E). Now that the RR
handlebar’s brake/ shifter levers are properly positioned, use a torque wrench
to tighten all bolts to manufacturers’ specifications. Using the cross method
mentioned in Step 2, secure the handlebar by tightening the stem’s faceplate,
making sure the gap between stem and faceplate is equal on both the top and
bottom.
Each faceplate bolt must be tightened to the exact Nm recommended by the stem
manufacturer. Be certain never to exceed the Coefficient RR Handlebar’s stem
face-plate maximum torque setting of 6Nm.
Now tighten brake/shift lever clamp bolts to the exact Nm instructed by the
lever manufacturer. Be certain never to exceed the RR handlebar’s brake lever
maximum torque setting of 8Nm.
Step 6:
Taping handlebar Once you have correctly positioned and properly tightened
handlebar; stem and levers— the last step before riding is wrapping the RR
handlebar with bar tape. Some riders prefer to wrap tape all the way to the
stem, while others teminate tape closer to the levers. The RR handlebar
includes a guideline bump near the tops-to-drops bend to assist with ‘less is
more’ bar taping. If taping the full length, be sure to pull/stretch your bar
tape a bit to cover the entirety of the RR handlebar.
Once you’ve carefully completed Steps 1 through 6, you ’ ready to ride the AR!
AR WARRANTY
Coefficient Cycling LLC warrants each new AR handlebar against defects in
workmanship and materials for a period of two full years from date of
purchase. This warranty is strictly limited to the replacement of a defective
handlebar. This warranty applies only to the AR’s original owner and cannot be
transferred. Warranty claims must be made through authorized AR dealers or
directly with Coefficient Cycling LLC. Before submitting a warranty claim,
please register your AR at
www.coefficientcycling.com/registration.
You will need your proof of purchase to complete registration.
Warranty does not cover normal wear-and-tear, incorrect assembly, or any damage caused by the partnering with incompatible components or attach-ment of accessories. Warranty does not apply to damage or failure due to accident, abuse, misuse or neglect. In case of handlebar replacement, labor costs for switching handlebars are not covered by the warranty.
REGULAR INSPECTION
Always carefully inspect your AR handlebar after each crash. We recommend
regular inspection of your bicycle, including your AR handlebar, for signs of
damage or fatigue including, but not limited to: cracks, dents, deformation,
discoloration, deep scratches, or audible creaking. Discontinue use and
replace any parts that show signs of damage or fatigue.
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CONTACT
www.coefficientcycling.com
[email protected]
Address: 1.415.815.8802 311 Arlington Road
Redwood City, CA 94062
© 2022 Coefficient Cycling LLC U.S. Patent No. 11,505,275