3
Design
Most of Öhlins suspensions are of the De Carbon
type. The fluid is put under gas pressure and the
gas and the fluid are kept apart by a separating
piston. The separating piston is often fitted in a
separate fluid reservoir, connected by hose (Fig.1)
or fixed direct on top of the shock absorber (Fig.2)
(piggyback).
There are also models where the separating
piston is fitted inside the main shock absorber (Fig.3)
(internal gas reservoir). Öhlins even manufacture a
small number of emulsion shock absorbers that do
not have a separating piston (Fig.4).
Pressurization of the fluid is made with nitrogen.
The pressurization prevents cavitation of the fluid
and the shock absorbing action is therefore more
even. The external fluid reservoirs also contribute
to better cooling of the fluid, giving longer service
life to both the fluid and components.
Öhlins shock absorbers have integrated
temperature compensation. As the temperature
increases and the fluid flows more easily the flow
is controlled accordingly. The shock absorbing
effect is therefore independent of the tempera-
ture.
Öhlins shock absorbers provide the possibility
for adjustment, making them adaptable to most
vehicles, drivers and ranges of use. All of the
shock absorbers, equipped with springs, have
adjustable preloading of the spring action. The
more advanced models permit individual adjust-
ment of compression damping and rebound
damping.
WARNING!
All vehicles are designed with a suspension
geometry that includes wheel movements and
angles. The changing of components can affect
this and it is therefore essential that both the rear
and the front ends match each other. Changing to
Öhlins suspension gives optimum performance
only when both the front and the rear suspension
interact properly.
Tuning the suspension
Road holding qualities
All vehicles are designed with a suspension ge-
ometry that includes wheel movements and an-
gles. The changing of components can affect this
and it is therefore essential that both the rear and
the front ends match each other.
Changing to Öhlins suspension gives optimum
performance only when both the front and the
rear suspension interact properly. It is of greatest
importance that the front and rear loaded height
(ride height sag) are within the specified values
in the Mounting instructions.
Gas
Gas and
oil
Oil
Oil
Shock absorber
piston
4
3
1
2
Oil
Gas
Separating
piston
Oil
1.
External reservoir with hose connection
2.
External piggyback reservoir
3.
Internal gas reservoir
4.
Emulsion shock absorber
Shock absorber position
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