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Settings, 3 . the front wheel, Installation of the braking system – Bos Idylle 2008-2010 User Manual

Page 4: Spring

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1.3 . The front wheel

To assemble the front wheel, check the following instructions :

1. Undo the 4 bolts at the bottom of the legs of your forks.

2. Put the front wheel in-between the legs.

3. Put a small amount of grease on the thread of the axle of the front wheel.

4. Put the axle in and tighten, no need to over tighten it, stop when you start feeling resistance.

Tighten first the 2 bolts on caliper side and then the 2 bolts on the other side,

to the same tightening torque : 2 to 3 nm.

1.4. Installation of the braking system.

Please refer to the manuals of the manufacturers. Meanwhile, apply the folowing instructions :

Minimul lenght of thread of the caliper screws into the fork : 10 mm

Tightening torque : 9 to 10 Nm

2.1. Spring

Before giving your forks their first spin, please do check that you are using the right spring rate.

With your forks (providing that it is not an original equipment) come extra springs in order to adjust to most of the

riders. By default, your forks come with the orange spring within.

The table below is for own use, please refer to it.

Less than 55 kg

55 to 65 kg

65 to 75 kg

75 to 90 kg

90 kg and more

green

red

orange

yellow

silver

option

supplied

with the forks

supplied

with the forks

supplied

with the forks

option

Spring Preload

The sag on your forks shouldn’t exceed 30 to 50 mm (15% to 25% of the travel) therefore it is very important not to

preload the forks more than what‘s necessary. The sag has to be considered in dynamic situations (going down the

hill for instance) not static situations before preloading the spring, and it allows to raise the chassis at its right height.

The preload of the spring is made through some spacers. Never use less than two spacers and more than four

spacers. Below and above these numbers, change the spring for a softer or a stiffer one.

Premoad adjustment and pring swap

1. Unscrew the triple crown on left side.Unscrew and remove the stanchion cap(1).

2. Adjust the number of spacers depending on the required preload (2).

3. To change the spring : remove the spacers (2), and the preloader (3).

4. Push down the stanchionto get access to the spring (4), remove it, replace it, and re-assemble the whole thing.

2. SETTINGS

1

2

3

4