Giant Bicycles XTC BIKES-2001 User Manual

XtC

Model Year 2001

Owners Manual

October 2000.

PROFESSIONAL CROSS COUNTRY BIKE

• Unique 4 bar linkage design.

• NRSTM (No Resonance System) suspension with “no-SAG” set-up.

• Sealed bearings on main pivots:

BB shell - chain stays / Linkage plates - seat tube / Seat stays - linkage plates.

• Rising suspension + “no-SAG” result in “no bobbing” and “no power loss”.

• Sensitive rear shock works even on the smallest bumps.

• Lightest Full Suspension competition XC team bike.

• 2 rear shock positions (XtC Team, XtC Mt. Snow and XtC Big Bear only).

• Rear wheel travel: 3~3¾ inches (XtC Team, XtC Mt. Snow and XtC Big Bear only)

3¾ inches (XtC Mammoth and XtC Napa).

• Front wheel travel: 3 inches.

Contents:

1. Sizing.

2. Rear suspension
2-1. NRSTM rear suspension system
2-2. Selecting rear travel
(only XtC Team, XtC Mt. Snow and XtC Big Bear).
2-3. Selecting air pressure, “Zero-SAG” adjustment
2-4. Rear suspension tuning
2-5. Rebound damping adjustment
(only XtC Team, XtC Mt. Snow and XtC Big Bear)
2-6. Removing the rear shock assembly or pivots
2-7. Air pressure adjustment range.

3. Cleaning and maintenance.

- Pag. 1. -

1. Sizing.

The actual frame measurements and geometries are listed below.
The XtC bikes are designed for Cross-Country racing, but are suitable for all round use as well.

Figure 1.

Size S - 16½” M - 18½” L - 20½”

A. Top Tube [mm.] (measured horizontally) 575 590 605
B. Seat Tube [mm.] 420 470 520
C. Seat Tube Angle 72 degrees
D. Head Tube Angle 70 degrees
E. B.B. Drop [mm.] 22

F. Chain stays [mm.] 425
G. Fork Rake [mm.] 38
H. Trail [mm.] 82

I. Wheel Base [mm.] 1047 1064 1081

Rear Travel

XtC Mammoth
XtC Napa

XtC Team
XtC Mt. Snow
XtC Big Bear

3¾”

3” or 3¾”

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INDEX

- Pag. 2. -

Figure 2.

2. Rear suspension.

2-1. NRSTM rear suspension system.

NRSTM (No Resonance System) bikes are equipped with dedicated RockShox SID rear shocks.
These SID shocks have separated “positive” air chambers (spring) and “negative” air chambers
(spring). The positive springs’ main function is to absorb the shock impact.
The negative spring (which is much smaller) makes the positive spring function smoothly and prevents
a harsh top out feeling when the shock returns to its original position.

Both air chambers have a valve to change the air pressure with a shock pump. By independently
inflating both chambers the NRSTM system can be set up in such a way that maximum efficiency,
comfort and control easily can be obtained. Note: the NRSTM system should not be set up with a
negative air pressure which is almost as high as the positive air pressure. Doing so, the “zero-SAG”
setting cannot be achieved.
XtC bikes with NRSTM system come with a shock pump with gauge free of charge!
Please use this pump to inflate the rear shock!
Air pressures have to be checked before every ride, slight air loss might occur over a few days
standing.

The drawing below shows the rear shock, air damping type (SID made by RockShox, special version
for Giant XtC).

A. Negative air valve
B. Positive (compression) air valve
C. Rebound damping adjustment knob

(only XtC Team, XtC Mt. Snow and
XtC Big Bear )

The RockShox SID rear shocks used in XtC Team, XtC Mt. Snow and XtC Big Bear have a rebound
damping adjustment knob to control the extension or rebound of the shock.

The rear shocks are serviceable and must be returned for service, only to an authorised RockShox
dealer (or call the RockShox distributor in your country) once a year or more often if the bike is used in
extreme conditions.
This service is not necessarily free of charge!

ALL SERVICE AND MAINTENANCE OF THE REAR SHOCKS SHOULD ONLY BE
PERFORMED WITH PROPER TOOLS BY AN AUTHORISED ROCKSHOX DEALER
OR BY THE ROCKSHOX DISTRIBUTOR IN YOUR COUNTRY.

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- Pag. 3. -

INDEX