suspension sag

[Falco9]

I've always used this set of parameters when measuring and setting my static sag and personally speaking my bikes have been spot on using these settings. I class myself as a reasonably fast road rider but certainly not Rossi

Measuring:
Preload on the spring/springs is very important,
because it affects the height of the motorcycle
and the fork angle. Consequently, handling characteristics
can be changed, even negatively.
Proceed as follows (it will be much easier if done
by two persons):
A Place the motorcycle on a stand.
B Lift up the rear end to a fully extended
position.
C Measure the distance, eg, from the
lower edge of the rear mud guard or
from a point marked by a piece of
tape, immediately above the rear wheel
axle, to the wheel axle. (R1)
D Make a similar measurement on the front
axle, e.g., from the bottom of the upper
fork crown to the front wheel axle.
The fork must also be fully extended. (F1)
E Allow the motorcycle (without rider) to
apply load on the springs and repeat
the measuring procedure. (R2, F2)
F Then take the same measurements
with the rider and equipment on the
motorcycle. It is important that the
rider has a correct riding posture,
so that the weight is balanced on the
front and rear wheel in the same way
as when riding. (R3, F3)
The measurements may not differ from the
following sizes:

Without rider:
Rear: 5-10 mm (R1-R2)
Front: 25-30 mm (F1-F2)


With rider:
Rear: 30-40 mm (R1-R3)
Front: 35-48 mm (F1-F3