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6.3.7.3 Setting the compression
The compression damper setting of the rear frame
damper makes it possible to set the damper
according to the conditions of the ground. The
compression damper setting specifies the speed
at which the rear frame damper deflects after
being loaded.
Figure 65: Suntour compression adjuster on the rear
frame damper
Turn the compression adjuster towards the
– symbol to increase rebounding.
Turn the compression adjuster towards the
+ symbol to reduce compressive deflection
movement.
6.3.8
Setting the FOX rear frame damper
Only applies to pedelecs with this equipment
6.3.8.1 Adjusting the negative deflection
Notice
If the air pressure in the rear frame damper is
exceeded or undershot, the damper can be
permanently damaged.
Do not exceed the maximum air pressure of
350 psi (24.1 bar). The minimum air suspension
pressure of 50 psi (3.4 bar) must be complied
with.
Negative deflection (sag) is compression of the rear
frame damper caused by the weight of the rider and
their gear (e.g. a backpack), the sitting position and
the frame geometry. This sag is not caused by riding.
Each rider has a different weight and sitting position.
The sag depends on the rider's position and weight
and should be between 25% and 30% of the
maximum Rear frame damper, depending on
pedelec usage and preferences.
MY20H02-12_1.0_12.06.2019
Set the compression adjuster to the OPEN
position.
Adjust the air pressure of the damper so that it
corresponds to your weight.
Attach the high-pressure pump to the damper.
Slowly compress the damper over 25% of the
deflection 10 times until you have reached the
desired pressure. This equalises the air
pressure between the positive and negative air
chambers, and the pressure indication on the
pump manometer changes accordingly.
Remove the high-pressure pump.
1
3
4
Figure 66: FOX rear frame damper
The negative deflection (2) is the distance between
the O-ring (4) and the rubber air chamber seal (1).
The total deflection of the rear frame damper (5) is
the distance between the end of the rear frame
damper (3) and the rubber air chamber seal (1)
Measure the distance between the rubber air
chamber seal (1) and the end of the damper (3).
This distance is the "total damper deflection" (5).
Put on your usual bicycling clothing, including
luggage. Sit on the pedelec in your usual riding
position and support yourself against an object
such as a wall or tree.
Push the O-ring (4) downward against the rubber
air chamber seal (1).
Get off the pedelec without allowing it to deflect.
Measure the distance between the rubber air
chamber seal and the O-ring. This dimension is
the sag. The recommended sag value is between
25% (hard) and 30% (soft) of the "total damper
deflection" (5).
Increase or reduce the air pressure until you have
reached the desired sag.
2
25-30%
1
5
Operation
67
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