User Guide

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XtC

Model Year 2001

Owners Manual

October 2000.

Contents:

1. Sizing.

2. Rear suspension

2-1. NRS

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.

PROFESSIONAL CROSS COUNTRY BIKE

• Unique 4 bar linkage design.

• NRS

(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.

Summary of content (9 pages)

PAGE 1
XtC Model Year 2001 Owners Manual October 2000. • • • • • • • • • PROFESSIONAL CROSS COUNTRY BIKE Unique 4 bar linkage design. TM NRS (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.
PAGE 2
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 A. B. C. D. E. F. G. H. I. S - 16½” Top Tube [mm.] (measured horizontally) Seat Tube [mm.] Seat Tube Angle Head Tube Angle B.B. Drop [mm.] Chain stays [mm.] Fork Rake [mm.] Trail [mm.] Wheel Base [mm.] XtC Mammoth XtC Napa Rear Travel XtC Team XtC Mt.
PAGE 3
2. Rear suspension. 2-1. NRS TM rear suspension system. TM NRS (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.
PAGE 4
2-2. Selecting rear travel (only XtC Team, XtC Mt. Snow and XtC Big Bear). XtC Mammoth and XtC Napa have just one possibility to assemble the rear shock unit: the so called “Marathon” setting. This setting has been developed to insure maximum control: fixed maximum rear wheel travel of 3¾”, with relatively low shock rebound speed. XtC Team, XtC Mt. Snow and XtC Big Bear models however, have 2 possibilities to mount the rear shock unit, the so called “Pro Racing” settings.
PAGE 5
How to change the position of the rear shock: 1. Use a 5 mm. Allen-key to remove the bolt that holds the upper end of the shock to the linkage plates. Take note of the position of each part when removing, to insure proper re-assembly. 2. Pivot the top of the shock towards the desired shock mounting holes in the linkage plates. See figure 3 which holes to use for position “1” or position “2”. 3. Re-install all parts in reversed order.
PAGE 6
4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. Inflate the air chambers until the correct pressures have been reached. Start with the negative spring (LOWER VALVE, on the small diameter of the shock) and next the positive spring (TOP VALVE on the large diameter of the shock). These shock pressures enable you to set up the shock 95% correctly. It is impossible to take into consideration deviations in the air pump gauge and the rear shock.
PAGE 7
2-4. Rear suspension tuning. By adjusting the air pressure, the RockShox SID rear shocks can be tuned to your particular weight, riding style and terrain. This shock has been designed to be tuned for soft, plush descent riding, for the long climbs, or a combination of both. Different riders require different performance characteristics from their suspension. (A). Heavier or more aggressive rider needs a stiffer compression damping (spring), a higher air pressure. (B).
PAGE 8
2-6. Removing the rear shock assembly or pivots. It is necessary to periodically check the rear shock unit and the suspensions’ pivot points for damage or wear. The rear shock unit should be returned to an authorised RockShox dealer or to the RockShox distributor in your country to inspect and repair. (Note: this is not covered under the terms of the warranty).
PAGE 9
3. Cleaning and maintenance. Proper maintenance of a Giant XtC dual suspension bicycle is important to insure years of trouble free safe riding and enjoyment. We recommend taking this bike to your authorised Giant dealer for periodic service and inspection of suspension systems. Parts such as seals, elastomer bumpers and bearings can be adversely affected by use, dirt and ultraviolet radiation.