TM RACING 2012 TM 100 MX, User And Maintenance Manual

Page: 41 / 84

ENGLISH
ENGLISH
41
ESTABLISHING REAR SHOCK LOWERING IN
RIDING CONDITIONS
- Now, with the help of a person who holds the motorcycle, sit on the
motorcycle wearing all protective clothing (with feet on the footrests)
and rock up and down a few times to normalise the set-up of the rear
suspension.
- A third person must then measure the distance between the same
points, with the motorcycle loaded and note this measurement as C.
- Lowering in running order is the difference between measurements A
and C.
EXAMPLE:
Motorcycle on stand (measurement A). …………...…….... 600 mm
Motorcycle on the ground loaded with the pilot’s weight
(measurement C) ............................................................. - 510 mm
Lowering in riding conditions............ …………………........... 90 mm
Lowering in riding conditions should be 90÷105 mm.
If lowering in riding conditions is less than 90 mm, the spring is too hard
(spring rate too high).
If the lowering exceeds 105 mm, the spring is too soft (spring rate too
low).
The spring rate is indicated on the outside of the spring wire.
After mounting a different spring,static lowering must be adjusted again
to 35 mm (± 2 mm).
According to our experience, the dampening grade in compression can
remain unvaried. With a softer spring, the dampening grade in rebound
can be reduced by some clicks, with a harder spring, increased by some
clicks.
CHECK TELESCOPIC FORK BASIC
CALIBRATION
For several reasons, the exact lowering in running order of the telescopic
fork can not be established. Small variations in body weight can be
compensated, as for the rear shock, through the spring pre-load. If your
telescopic fork, however, frequently bottoms, it is necessary to use an
higher rate fork spring to prevent damage to the telescopic fork and
frame.
VARIATION OF TELESCOPIC FORK PRE-LOAD
To vary the spring pre-load on these telescopic forks, it is necessary to
disassemble them partially (see specific manual of the fork mounted on
the motorcycle). It is possible to add pre-load spacers. The fork springs
however, can be pre-loaded to a max. of 20 mm.
FRAME AND ENGINE MAINTENANCE FRAME AND ENGINE MAINTENANCE