Bos VOID 2014 User manual - Manual (Page 6)

3.5. AIR VOLUME ADJUSTMENT
The progressive adjustment featured on the Void allows you to act on the air spring rate on the last third of stroke.
Therefore, from satisfying settings (air pressure and hydraulic) on the first half of the stroke, you can act on the last
mm of travel.
The most featured and simple cases are :
1. The shock has an overal setup to single out comfort and grip,and the bike is quite low: by increasing the rate, you
will get a better control of the chassis through the shock and avoid bottoming out. The rate curve is more
progressive (increasing in the end).
2. The overal setup of the shock is more responsive, with a chassis balance quite high. By decreasing the rate, you
can make sure that you use all the travel.
This setting is made through the o’rings placed inside the air chamber, by adding or removing some.
We suggest you to go step by step. At first, play with two o’rings, then end the setting more precisely, with one
o’ring.
By adding one o’ring in the chamber, the spring rate will increase of 2%.
Usually, the correct setting is made with 0 to 4 o’rings. But the range can go up to 10 o’rings depending on the
bikes.
Procedure
CAUTION
Use only the o’rings provided by Bos. The material and the dimensions are specific.
1. Install the shock in a vise using a soft jaws (1)
2. Tighten slightly to avoid damaging your shock
3. Take note of the current pressure in your
shock before deflating it. Take into account the
air loss, due to the insertion of the pump.
4. Unscrew and remove the air chamber cylinder
(2) et (3). Never use tool.
5. Remove the shock from the vise and separate
the air chamber cylinder from the shock body.
5. Place or remove the o’rings inside the air
chamber cylinder. Ideally, place them at the
bottom of the cylinder (4).
6. Before to screw back the cylinder, make sure
that the rebound knob and the sticker of the
main cylinder are perfectly aligned (5).
7. Once tighten, make sure that the cylinder (A)
and the top of the air chamber (B) come at the
same level (6). In case not, check if the valve
cylinder is well positionned.
CAUTION
Make sure that the jaws are applied on a flat
surface and do not touch the rebound knob.
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3 4
5 6
A
B
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