NOTE: This manual is a suppliment for full-suspension bicycles. It is
not a stand alone Owner’s Manual and it should be r ead in conjunction
with the Owner’s Manual that came with your bicycle. Both manuals
contain important information regarding the safety and operation of
your bicycle.
1
INTRODUCTION
Congratulations on your purchase of a Giant full suspension bicycle. W e at Giant
Bicycle, Inc. are very proud of the bicycles we sell and are sure you will be happy
with the performance of your new full suspension bicycle. Full suspension bicycles
represent the latest in design and engineering and require special care. The pivots
and links that are designed into your frameset allow movement and are high tolerance
precision mechanisms. While Giant Bicycle engineers have strived to use the highest
quality, most durable and lowest maintenance materials in these mechanisms, there
are certain guidelines you must follow to attain optimal performance and proper
wear characteristics from these mechanisms. For that reason, it is important that
you take the time to read the following guidelines and the sections of the supplement
that pertain to your bicycle.
2
Shock Basics & Terminology
Compression Damping:
Compression damping aids in preventing the shock from bottoming out over big
hits by absorbing some of the energy of the bump. While all shocks have
compression damping, the ability to adjust it is only available on higher end coil
shocks. Increasing the compression damping will make the shock compress more
slowly when you hit a bump. When you increase the compression damping, you
will effectively make the bike ride “higher” in the suspension travel curve and
the shock will not be as supple over small bumps. Increased compression
damping is usually reserved for high speed riding where “big hits” are
encountered. For most off road riding conditions, the compression damping is
kept low . It is also a personal preference that can be experimented with to find
the optimal performance level for your style of riding and terrain.
Rebound Damping:
Rebound damping controls the rate of speed that the shock returns to its original
position after your wheel hits an obstacle. The rebound damping prevents the
shock from springing back so quickly that it can cause the bike to “buck” after
hitting an obstacle. It also prevents the shock from topping out or rapid shock
unloading. If the rebound damping is set too high the shock will “pack up”, or
not extend to its full length over successive hits. This will cause the bike to
eventually ride “lower” in the shock’ s range of travel. The rebound damping is
critical to the proper tracking of the wheel. With no rebound damping, the wheel
may react too quickly to any encountered bump. A low setting is desirable for
very rough broken terrain. A higher setting will help the shock react more
smoothly where smooth, large gradual compressions are encountered as opposed
to smaller repetitive hits. Increased damping will aid in control in high speed
situations where a fast rebound of the shock may not coincide with the terrain.
Standard Setting: Ride the bicycle off a curb and the shock should bounce once.
If not, adjust damping knobs.
Spring Rate: The amount of force required to deflect a spring a given distance.
Usually the amount of force in lbs. to compress the spring one inch.
Sag: Compression of the suspension caused by the riders weight.
Rebound: The extension or return stroke of the shock or fork.
Preload: The amount a spring is compressed on an extended shock or fork.
3
Compression Stroke: The motion of the shock or fork in response to an impact.
Bottoming Out: When all the suspension travel has been used.
T opping Out: When all the suspension travel is available.
4
GENERAL MAINTENANCE
1) Do not use high-pressure water sources to wash or rinse your bicycle. Highpressure water will force its way into the pivots and blow away lubricants as
well as force contaminants into the mechanism. This can cause premature
wear. Instead, use household dish soap and a soft nylon bristled brush to
clean your bicycle and use a light spray to rinse. This is the same technique
used by our race team mechanics while working on our team members’
bikes. T owel dry and re-apply lube where necessary.
2) While we strongly recommend that an Authorized Giant Dealer perform
maintenance on the suspension, we realize that you may do some of your
own maintenance. If you disassemble the pivots of your Giant bicycle,
please note:
a) Do not use harsh solvents on the pivots. Use soapy water or a citrus
based degreaser instead.
b) Do not use cleaners that contain any type of abrasive no matter how
gentle. Wipe the individual components of the pivot clean with a fresh,
soft, low lint rag or towel.
c) Re-apply a small amount of high grade, low viscosity silicon or Teflon
based lubricant to the pivot or bushing surface. Do not use a petroleum
based lubricant or white lithium grease.
d) Be extra careful to not get lubricant on the threads of the pivot parts.
3) Components that thread directly into the frameset or other component need
to have blue LoctiteTM applied to the threads. It is very important that
LoctiteTM only be applied to the threads and not contaminate the pivot or
bushing surface. Use of any other color LoctiteTM besides blue will void your
warranty. These steps will assure you of a smooth working pivot that will not
become loose under normal riding conditions.
4) If you have purchased a complete bicycle, it must be assembled by an
Authorized Giant Dealer in order for the warranty to be valid. If you
purchased a frameset, the dealer must “de-burr” the bottom bracket threads
prior assembly to assure proper bottom bracket installation. Giant Bicycle,
Inc. is not responsible for damage to the frame due to incorrect assembly .
5)WARNING: With exception of the Giant DH model bicycles,
all Giant bicycles are engineered for single crown forks only.
Use of dual crown forks on any Giant bicycle besides the DH
models will void the warranty and may result in frame failure,
which can cause injury or death. Giant Bicycle, Inc. is not
responsible for damages to the bike and rider resulting from
the use of dual crown forks.
5
XTC NRS
Your new XTC NRS bicycle is the result of collaboration between Giant Bicycle
Manufacturing and Renault Sport Formula One suspension engineers.
This frameset is built for cross country riding. It is a full suspension mountain
bike that sprints and climbs like a hardtail with the control and comfort of a dual
suspension.
The NRS or “No Resonance System” requires a “No Sag” set up. This is
different than other suspension systems, which incorporate sag. To get the most
from your XTC NRS bicycle, please follow the following set-up guidelines.
“No Sag” Setup (See Drawing #1):
1) As a starting point, set the positive air chamber (B) on the rear shock at
10psi over the rider’s riding weight. This is the weight while wearing all
your riding gear . (For example, if the rider’ s weight is 160 lbs set the shock
at 160 psi + 10 psi = 170 psi)
2) To measure the travel, you can position the rubber “O” ring (D) on the shaft
of the shock to measure the amount of compression/movement.
3) Set the negative air chamber (A) at 50psi.
4) The rider should be able to sit on the bike at rest without compressing the
rear shock. If the rider compresses the suspension, add 10 psi to the positive
air chamber (B) and retry setup.
4) Tune rebound damping (C) to personal tastes(see Shock Basics and
Terminology).
5) If you have difficulty setting up the suspension, please see your Authorized
Giant Dealer for assistance.
Drawing #1
6
Maintenance (See Drawing #2):
Before every ride, it is important that you inspect the frame pivots and links for
any looseness or play.
1) If there is play, make sure that the pivot bolts are tightened to the
appropriate torque value (see below).
2) If the pivot bolt is not tightened to the apporpriate torque value, unthread the
bolt enough to expose the receiving threads on frameset or linkage.
3) Put one drop of blue LoctiteTM on the exposed receiving threads.
4) Tighten the bolt to the appropriate torque value.
5) Wipe off excess blue LoctiteTM on the back of the threads.
6) If there is still play in the pivot or linkage, please see your Authorized Giant
Dealer to have your bike inspected for any needed repairs.
Torque values:
1. Main swingarm pivot (bottom bracket) = 120-150 Kgf/cm. or 105-130 in-lbs.
2. Chainstay pivot= 120-150 Kgf/cm or 105-130 in-lbs.
3. Main linkage pivot (seat tube)= 120-150 Kgf/cm. or 105-130 in-lbs.
4. Seatstay pivot= 120-150 Kgf/cm. or 105-130 in-lbs
5. Upper shock mount= 120-150 Kgf/cm. or 105-130 in-lbs.
6. Lower shock mount= 100-120 Kgf/cm. or 86-105 in-lbs.
Drawing #2
7
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