SRAM rock shox Manuel utilisateur
GEN0000000000000
© 2015 SRAM, LLC
Front Suspension
Setup and Tuning Guide
GEN.00000000005623 Rev A
© 2018 SRAM, LLC
2
Table of Contents
Introduction ...................................................................................................................................................................... 4
Set Sag.............................................................................................................................................................................. 5
Dampers ............................................................................................................................................................................................ 6
Air Springs - Solo Air™, DebonAir™, Dual Position Air™ ............................................................................................................7
Coil Spring - Dual Crown Forks ..................................................................................................................................................10
Coil Spring - External Preload Adjuster Knob.........................................................................................................................12
Coil Spring - Paragon™ Silver.......................................................................................................................................................15
Rebound Damping..........................................................................................................................................................17
Rebound - Optimal .........................................................................................................................................................................18
Rebound - Too Fast........................................................................................................................................................................19
Rebound - Too Slow......................................................................................................................................................................20
Low Speed Compression Damping............................................................................................................................. 21
Rolling Terrain.................................................................................................................................................................................22
Bumps............................................................................................................................................................................................... 23
High Speed Compression Damping............................................................................................................................24
Square Bumps and Drops ...........................................................................................................................................................25
Threshold (Pedal)...........................................................................................................................................................26
3
Lockout............................................................................................................................................................................ 27
Compliance and Blow-Off...........................................................................................................................................................28
Air Spring Bottom Out Tuning - Bottomless Tokens™ ...............................................................................................29
Fork Models and Damper Adjustments......................................................................................................................30
Service and Settings ..................................................................................................................................................... 31
4
To achieve maximum suspension performance, proper setup and tuning is essential.
This guide will help you identify and understand the features and adjustments that may be included on
your RockShox® suspension fork, as well as guide you through spring setup, damper adjustments and
tuning, and air spring bottom out tuning.
Tuning suggestions are starting points. It may take trying various adjustments to find the settings that
work best for each individual rider and trail condition.
Try the Quarq® ShockWiz™ suspension tuning device for more detailed ride data analysis and setting
suggestions. Go to www.quarq/shockwiz.com for more information.
For quick setup after fork service and tuning has been performed, make a note of your fork
settings on page 31.
Go to www.rockshox.com/app for suggested air spring pressure and rebound damper
settings for your fork.
Go to www.sram.com/service for additional product and technical information.
• Air spring pressure and coil spring tables are available in the RockShox® Front
Suspension Oil, Air, Coil, Token, and Specification documents.
• For a complete list of available coil springs and Bottomless Tokens™,
consult the RockShox Spare Parts Catalog.
• Consult the RockShox service manual for your fork for complete
disassembly and assembly procedures.
Your product's appearance may differ from the images in this
publication.
All setup procedures picture the fork only. Perform actual fork
sag and tuning on a complete, assembled bicycle.
All performance examples illustrated are for conceptualization
and may vary from actual performance.
Compression
Damper
Adjusters
Spring
(Air or Coil)
Rebound
Damper
Adjuster
Introduction
5
Suspension sag can be used to set the proper suspension spring rate.
Sag is the amount of travel, measured as a percentage of full travel, that the
suspension compresses when the rider, including gear, is on the bicycle in
the normal riding position. Setting the correct sag allows the suspension to
actuate effectively and efficiently.
• More sag (20% - 30%) increases bump sensitivity and suspension
movement. More bump sensitivity results in a smoother ride and is
typically preferred on longer travel bicycles.
• Less sag (10% - 20%) decreases bump sensitivity and suspension
movement. Less bump sensitivity results in a more firm, efficient ride and
is typically preferred on shorter travel bicycles.
Air pressure recommendations on the back of your fork, or at
www.rockshox.com/app, are suggested for initial spring setup. After sag is
set, your fork's optimal air pressure may differ based on fork travel, bicycle
geometry, and rider preference.
Important - Sag must be set before making any damping adjustments.
Many RockShox® forks include sag percentage gradients and a sag o-ring
on one of the upper tubes.
If a sag o-ring is not on your fork, install a plastic cable tie around the upper
tube just tight enough so it does not slide down the upper tube. Remove the
cable tie before riding.
If your fork does not have sag percentage gradients, multiply the target sag
percentage by the total amount of suspension fork travel. Use a ruler to
measure the length of exposed upper tube above the dust wiper seal to the
sag o-ring.
If your fork's travel is unknown, before sag is measured, fully compress
the fork to bottom out. Release and use a ruler to measure the length of
exposed upper tube below the sag o-ring.
Set Sag
6
1
Before setting sag, set the dampers to the full open positions. Rotate the knobs counter-clockwise until they stop.
Dampers
2
Adjust
7
Pressurize the air spring to the
recommended starting air pressure.
Remove the pump.
For Dual Position Air forks, pressurize the
fork in the full travel position. Proceed to
step 6.
Solo Air and DebonAir only: Compress the
fork through at least 50% of its travel five
times to equalize positive and negative air
pressures.
Air pressure equalization ensures the
positive air spring is accurately pressurized.
Pressurize the air spring to the
recommended starting pressure once more.
Remove the pump.
3
x5
≥50%
Air Springs - Solo Air™, DebonAir™, Dual Position Air™
1
2
4
AdjustRemove Measure
8
Solo Air™ and DebonAir™ only: Compress
the fork through at least 50% of its travel five
more times to equalize positive and negative
air pressures.
With riding gear on, and an assistant holding
the bike, stand on the pedals, and compress
the fork three times. Then sit or stand in your
normal riding position.
5
x5
Have your assistant slide the sag o-ring
down to the top of the dust wiper seal.
7
≥50%
6
x3
Adjust Measure
9
Note the sag percentage where the o-ring
stopped.
Gently step off the bicycle without
compressing the fork any further.
If your target sag percentage is not
achieved, air pressure must be adjusted.
Increase air pressure to decrease sag.
Decrease air pressure to increase sag.
Repeat the sag process until your target sag
percentage is achieved.
8
<10%
40%
Adjust Measure
10
Gently step off the bicycle without
compressing the fork any further.
Coil Spring - Dual Crown Forks
2
3
With riding gear on, and an assistant holding
the bike, stand on the pedals, and compress
the fork three times. Then sit or stand in your
normal riding position.
Have your assistant slide the sag o-ring
down to the top of the dust seal.
1
x3
Adjust
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