10 TUNING THE CHASSIS
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10.1
Checking the basic chassis setting with the rider's weight
Info
When adjusting the basic chassis setting, first adjust the shock absorber and then the fork.
401030-01
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For optimal motorcycle riding characteristics and to avoid damage
to forks, shock absorbers, link fork and frame, the basic settings of
the suspension components must match the rider's weight.
–
As delivered, GASGAS offroad motorcycles are adjusted for an aver-
age rider's weight (with full protective clothing).
Guideline
Standard rider weight
75 … 85 kg (165 … 187 lb.)
–
If the rider's weight is above or below this range, the basic setting of
the suspension components must be adjusted accordingly.
–
Small weight differences can be compensated by adjusting the
spring preload, but in the case of large weight differences, the
springs must be replaced.
10.2
Air suspension XACT 5448
M01110-01
Air suspension
WP Suspension XACT 5448
is used in the fork.
In this system, suspension is located in the left fork leg and damping in
the right fork leg.
As fork springs are no longer required, a significant weight advantage is
achieved when compared to conventional forks. The response on slightly
uneven surfaces is significantly improved.
In normal driving mode, suspension is provided exclusively by an air
cushion. A steel spring is located in the left fork leg as an end stop.
Info
If the fork is frequently overloaded, then the air pressure in the
fork must be increased to avoid damage to the fork and frame.
The air pressure in the fork can be quickly adjusted to the rider's weight,
surface conditions and the rider's preference using a fork airpump. The
fork does not have to be dismantled. The time consuming mounting of
harder or softer fork springs is not required.
If the air chamber loses air due to a damaged seal, the fork will still not
sag. In this case the air is retained in the fork. The suspension travel is
maintained as far as possible. The damping becomes harder and the
riding comfort reduces.
As with a conventional fork, the damping can be adjusted in rebound
and compression stages.
The rebound adjuster is located at the lower end of the right fork leg.
The compression adjuster is located at the upper end of the right fork
leg.
