Fantic Motor TZ 300 2011, User Manual

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Does the rear end jumps when braking over potholes?
The shock absorber probably has too little rebound damping.
- Increase the rebound damping.
Does the rear tire lacks traction when coming out of corners?
- The shock absorber is too hard:
1. Decrease the rear shock absorber spring.
2. Decrease the compression damping.
3. Use a softer spring.
Does it land on the front wheel in high speed jumps?
(there may be a problem with the driver’s posture)
Rebound damping too soft or hard spring.
1. Increase the rebound damping.
2. Decrease the shock absorber spring preload.
3. Decrease the compression damping.
Does the suspension jounce stops at front and rear of the motorcycle in
high speed jumps?:
(If this occurs 1 or 2 times in the same lap of the race)
Front and rear suspension system are too soft:
1. Front:
Increase the oil lever and / or use a harder spring.
2. Rear:
Increase compression damping or use a harder spring.
NOTE
After any adjustment, check front and rear compatibility.
Adjustments that depend on the conditions of the jounce stops (rear
shock absorber).
- Suspension jounce stops at low speed, increase the spring preload to the
maximum setting.
- Jounce stops after 3 or 4 successive jumps, decrease the rebound damp-
ing.
Gearshift
Select the ratio development. Preconditions.
Race conditions: vary the transmission replacing the rear pinion.
Fast race: use pinions with less teeths.
Winding road or soft or sandy uphill surface: use pinions with more teeths.
- If the straight portion of the course is long, the ratio development can be
extended and due to this the speed increases.
- When the course has many corners or uphills or is wet, the ratio develop-
ment will be reduced so that gear shifting is possible at low speed.
- Actually, the speed can be changed depending on the terrain conditions
on the day of the race and therefore, be sure to run through the racing
circuit prior to a race and set the machine suitable for the entire course.
- If the straight portion of a course on which the machine can be run at
maximum speed is long, the motorcycle should be set so that the maxi-
mum machine speed can be developed towards the end of the straight
course, but care should be taken not to over-rev the engine.
- It is very di ffi cult to adjust the motorcycle to be best setting for all por-
tions of the circuit. Therefore, determine which circuit portions will have
the greatest e ff ect on lap time and set the motorcycle for these portions.
In this manner the motorcycle will deliver best performance for the entire
circuit.
Special care according to the terrain conditions.
1. In dry, dusty conditions special care must be given to keep the air cleaner
element clean since it accumulates dirt and the engine operates too “rich”.
2. When riding on wet heavy clay the mud adheres to the tires and other
parts of the vehicle. The mud can add signi fi cantly to the weight of the
vehicle and therefore reduce performance. Take care so that the engine is
not overheated. The same applies when driving in deep sand.