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1.3

 

Installing the front wheel 

To assemble the front wheel, follow this procedure: 

1.

 

Loosen the four axle pinch bolts on the fork lowers and remove the axle . 

2.

 

Install the front wheel into the dropouts. 

3.

 

Put a small amount of grease on the thread of the axle . 

4.

 

Lightly tighten the axle to the lower leg. 

5.

 

Tighten the two left side (caliper side) dropout pinch-bolts to to 4-5 N.m torque. 

6.

 

Compress the fork twice without braking to release residual tension and tighten the two right side dropout pinch-bolts 
to 4-5 N.m torque. 

 
To disassemble the wheel, follow these instructions in reverse. 
 

1.4

 

Mounting the brake caliper 

 

The Idylle brake caliper bolt pattern uses a post mount 160 (PS160) standard mount.  Follow the disc brake manufacturer’s 
recommendations for installation and the following guidelines. 
The disc brake caliper mounting bolts must have 10 mm of thread engagement with the fork. 
The disc brake caliper mounting bolt tightening torque level must never exceed 10 n.m. 
 
 
 

 

 
 
 
 
 

 

2.1

 

Air Pressure 

The first adjustment that should be done on the fork before riding is to set the air pressure. This adjusts the stiffness of the air 
spring according to your weight. The stiffness of the air spring induces a degree of fork travel when you sit on your bike. This 
value, commonly called sag,  can vary based on your usage.  This  value should be between  30mm (smooth terrain/climbs) and 
50mm (rough terrain/downhills).  The sag  measurement  should be taken with both feet  on the pedals and both hands on the 
bars, arms and legs in riding position.  
 
To achieve the best performance from your BOS product, it is important to set your optimal pressure. 

The chart below will give 

you  some  base  values  based  on  your  weight.  Your  specific  pressure  may  vary  based  on  your  riding  style  and  personal 
preference.

 However, do not stray too far from the indicated pressures, or you may risk changing the performance of your fork.

 

 

Recreational Use: 

Weight (Kg/lbs) 

60/132 

65/143 

70/154 

75/165 

80/176 

85/187 

95/210 

Pressure (psi) 

+/-10 PSI 

153 

163 

171 

180 

187 

194 

207 

 

Racing Use:  

Weight (Kg/lbs) 

60/132 

65/143 

70/154 

75/165 

80/176 

85/187 

95/210 

Pressure (psi) 

+/-10 PSI 

160 

169 

179 

187 

195 

202 

216 

 
 
 
 
 
 
 
 
 
 
 
 

Caution : 

Minimum pressure: 135 PSI 
Maximum pressure: 250 PSI 
 psi 

2. Settings 

Air valve cap 

Air valve 

Summary of Contents for Idylle FCV

Page 1: ...User Manual ...

Page 2: ...uential resulting from the use of its products local legislation prevailing Warranty exclusions This warranty does not cover the following cases Damage to products resulting from improper assembly other than listed below Products that have been modified by the owner or a third party Improper use Damages resulting from an accident or a crash under any circumstances Invalid servicing procedures and ...

Page 3: ...ollowing measurements to set your lower crown height This height is measured from the top of the fork leg the bottom of the visible part of the dust seal to the bottom of the lower crown 27 5 wheel model forks 217mm CAUTION This measurement match with a maximum of 705mm tire diameter The distance between the top of the upper crown and the top of the stanchion must be between 0mm and 30mm B Once yo...

Page 4: ... should be done on the fork before riding is to set the air pressure This adjusts the stiffness of the air spring according to your weight The stiffness of the air spring induces a degree of fork travel when you sit on your bike This value commonly called sag can vary based on your usage This value should be between 30mm smooth terrain climbs and 50mm rough terrain downhills The sag measurement sh...

Page 5: ...e air spring pressure the position of the fork in the crowns and the geometry of the bike This is not to mention personal rider preference That being said we can offer the following general advice Fork diving excessively on braking harden low speed compression Frequent bottom out harden high speed compression Feeling of harshness on roots and rocks soften high speed compression Discomfort arms get...

Page 6: ...en till snug do not compress the fork 3 2 Service It is essential to clean your fork after each day of riding without waiting Nothing is worse for the life of your seals than dirt and dust The cleaning process is also extremely simple clean the stanchions and seals with a clean rag You can occasionally lubricate the exterior of the seal with fork oil The following chart shows the minimum service i...

Page 7: ...he stanchion and the top of the oil with a clean ruler Oil Heights IDYLLE Rare FCV Hydraulic side right 140 mm Air side left 20 ml 140mm Important It is strongly recommended to use BOS Bi oil Changing the type of oil risks changing the fork s performance and reducing the life of wear parts Caution To correctly set the oil height on the hydraulic side of your fork purge the cartridge as you are add...

Page 8: ...at our recommended base settings given in the setup section of your product s user manual If you ve equalized your fork you may have some internal pressure from the production process You can eliminate this pressure by slipping a thin ziptie between your left dust seal and your stanchion until you hear the sound of air escaping Then reset your pressure and equalize your air chambers If you ve trie...

Page 9: ...recommended service intervals cannot cover 100 of customer s usage cases Use in wet muddy conditions storage out in the sun frequent use or improper care can all cause your seals to wear out more quickly Where can I find my serial number The serial number is engraved under the steer tube it s composed of 7 numbers How can I adjust my FCV The FCV is a very precise internal system who is preset in o...

Page 10: ...Date Location Air pressure Psi HS Compression LS Compression Rebond Remarks 4 impasse Léonce Couture F31200 Toulouse tel 33 0 534 25 33 66 fax 33 0 534 25 33 60 5 Notes ...

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