NINER ENCYCLOPEDIA
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SPECIFICATION & SETUP GUIDE
47
: Updated: SEPT 5, 2012
INSTALLATION NOTES
The Niner BioCentric is subject to unusual forces and BB shells are
frequently exposed to water and mud, making proper bottom bracket instal-
lation and maintenance particularly important. Regular grease or anti-seize
compounds are not up to the task of keeping your BioCentric smooth and
quiet, so we recommend that the BioCentric be installed with one of the
following compounds:
1. Oatey’s Pipe Joint Compound – This Teflon-based paste offers the same
benefits of Teflon tape but is significantly more durable and the paste con-
sistency makes adjustments easier. This paste is inexpensive and readily
available at hardware stores.
2. Effetto Mariposa Carbo Grip – Particularly tough creaking/slipping/con-
tamination cases are nearly always solved with the use of a product from
Effetto Mariposa called Carbo Grip
http://www.cantitoeroad.com/effetto-
mariposa-carbogrip
. Carbo grip is an aerosol spray that was designed to
prevent slipping between smooth surface bicycle parts. Since Carbo Grip is
more expensive and not as widely available, we suggest trying Oatey’s Pipe
Joint Compound first.
These are the only two compounds that we recommend for use with the
BioCentric. Grease, Carbon Assembly Compound or Anti-Seize can all pro-
mote slipping and/or creaking.
The preparation and assembly procedures are identical for both materials.
Some older Niner frames may require extra steps for installation.
See a Niner Dealer or contact [email protected] for installation
instructions for used/older frames or if your BioCentric has 130 in/lbs
laser etched on the non-drive side shell.
If you don’t have the necessary tools or skills to install this
component, take it to an authorized Niner dealer for installation.
It’s critical that it be installed correctly to ensure its longevity and
functionality. If you have any questions or concerns about your
product, don’t hesitate to contact us through our web site or by
emailing [email protected].
BIOCENTRIC INSTALLATION
GETTING STARTED
YOU WILL NEED:
• NINER BioCentric & BIKE FRAME
• CLEAN SHOP RAG
• ALCOHOL
• CARBO GRIP or OATEY’S PIPE JOINT COMPOUND
• TORQUE WRENCH
• 6MM HEX WRENCH
• 5MM HEX WRENCH (BioCentric II)
Step by step instructions for installing
the Niner BioCentric in a new Niner frame:
1. CLEAN FRAME AND BIOCENTRIC - The frame’s bottom bracket shell and
the BioCentric Bottom Bracket Insert must be completely free of lubricant
or dirt. Wipe the shell and BioCentric thoroughly using a clean rag and
alcohol.
2. PREPARE BIOCENTRIC - Apply a thin layer of Carbo Grip or Pipe Joint
Compound to the shoulders of the BioCentric and inside the bottom
bracket shell. Allow Carbo Grip to dry for a few minutes, it should be tacky
but not wet.
3. INSTALL BIOCENTRIC - Carefully slide the two BioCentric halves into the
frame, aligning them so that the M8 tension bolt may be installed. Grease
the bolt head and threads to ensure the bolt does not bind and give
improper torque readings. Torque the bolt to 190 in-lbs. Proper torque is
critical, do not exceed 190 in-lbs.
4. INSTALL BIOCENTRIC II - Lightly grease the bolt posts of the non-
driveside BioCentric II half. Carefully slide the two halves into the frame,
aligning them so that the two M6 bolts may be installed. Grease the bolt
heads and threads to ensure the bolts do not bind and give improper
torque readings. Torque the bolts to 106 in-lbs. Proper torque is critical, do
not exceed 106 in-lbs.
Over-tightening any BioCentric installed in an Air 9 Carbon frame
can distort the bottom bracket shell and cause irreparable damage.
This damage caused by improper installation is not covered under
warranty!
5. INSTALL BOTTOM BRACKET AND CRANK - Install the bottom bracket
cups and crankset per manufacturer’s specification. Some chainring/bot-
tom bracket spindle length combinations may cause interference with the
chainstay. If this occurs you will most likely be able to rotate the BioCentric
so that the bottom bracket is in a more forward position to eliminate the
interference between the chainring and chainstay.
6. TENSION CHAIN - With the crank and bottom bracket properly installed it
is time to set the chain tension. Loosen the BioCentric so that the unit may
be rotated. One of the easiest ways to rotate the BioCentric is by inserting
a 6mm hex wrench into the hole on the Drive Side. The wrench will slip
between the spider arms of the crank, inside the chainring (6a). Use the
crank to rotate the BioCentric by bracing the wrench against the spider of
the crank. Once the proper tension is acquired torque the tension bolt to
190 in-lbs.
The BioCentric II can be rotated by inserting a 6mm wrench in the provided
adjustment hole on the non-drive side (6b). Once the proper tension is
acquired torque the BioCentric II tension bolts to 106 in-lbs.
Now that the BioCentric is installed it is time to go ride! Enjoy the quiet ride
as the BioCentric holds your chain tension perfectly.
CARBO GRIP OR
PIPE JOINT COMPOUND HERE
2
6a
6b
