DHX RC4 DAMPER

FOX RACING SHOX DHX RC4

PREFACE Tekin Suspension

Tekin Suspension is dedicated to constant evolution in the performance of mountain bike suspension. The ethos of Tekin Suspension is simple: to provide the utmost level of support and uncompromised servicing of FOX Racing Shox products.

The roots of Tekin Suspension are competitive mountain biking. The services offered by Tekin Suspension have been developed to achieve the highest level of performance from FOX products, used at the highest level of competition.

INTRODUCTION -

3

FEATURES -

4

REBOUND -

5

LOW-SPEED COMPRESSION -

6

HIGH-SPEED COMPRESSION -

7

BOOST VALVE

-

8

BOTTOM-OUT CONTROL -

9

SERVICE - 10 CONTACT - 11

INTRODUCTION

The DHX RC4 is the flagship, purpose-built downhill shock specifically engineered to meet the demands of the athletes who make the worldâ&#x20AC;&#x2122;s most incredible downhill courses look simple.

The DHX RC4â&#x20AC;&#x2122;s externally adjustable high and low speed velocity sensitive damping, and celebrated Boost Valve that provides position-sensitive ending stroke control, act independently from each other allowing the rider to dial in the optimal balance of traction, small bump compliance and big-hit absorption for the perfect amount of terrain following it takes to win championships. Adjustable LSC Position and velocity-sensitive, adjustable Boost Valve and HSC

3

Descent

Application

FIT RC2

Product pairing

Valving type (compression)

Internal tuning options

FEATURES

Feature

4

Adjuster Base Setting

High-speed compression (HSC)

Mid range

Low-speed compression (LSC)

Mid range

Spring preload

Minimal

Bottom-Out Control (BOC)

Varied

Boost Valve air pressure

Mid range (150 PSI)

Rebound adjuster

Mid range

REBOUND

Rebound damping controls how quickly the suspension returns after being compressed and gives you a predictable and controlled ride, while maintaining traction.

Assessing rebound by simply pushing on the handle bars or seat does not indicate the performance of the system in a dynamic environment. Save your judgment of rebound performance for a test section of trail.

REBOUND TOO FAST If rebound is too fast the bike will be unstable while pedaling and riding through shallow bumps. The unsettling effect is noticed as your body weight is pitched over the bike.

REBOUND TOO SLOW If rebound is too slow, there will be insufficient recovery between bumps to ensure successive bumps are absorbed. Harshness will be noticed on longer rough sections.

5

Clockwise adjustment Slower rebound Counter clockwise adjustment Faster rebound

LOW-SPEED COMPRESSION

Low-speed compression (LSC) damping refers to the damper force generated at low damper shaft speeds.

LSC damping provides resistance to the suspension being compressed slowly and with relatively low force. This relates to pedalling forces, changes in mass distribution, shallow and small bumps.

LSC TOO SOFT Changes in mass distribution, small and shallow bumps will cause excessive compression. A lack of support is noticed as the suspension uses excessive travel with minimal input.

LSC TOO FIRM Small bump sensitivity and traction will be compromised. A harsh ride and loss of traction is noticed over loose and rough terrain.

6

Clockwise adjustment

Firmer LSC

Counter clockwise adjustment

Softer LSC

HIGH-SPEED COMPRESSION

High-speed compression (HSC) damping refers to the damper force generated at high damper shaft speeds.

HSC damping provides resistance to the suspension being compressed quickly and relates to landings, large and square edge bumps.

HSC TOO SOFT Excessive use of travel (compression overshoot) on large and square edge bumps. A lack of support is noticed as the suspension dives through the travel on bump impact.

HSC TOO FIRM Large and square edge bump compliance is compromised. A lack of compliance is noticed with excessive rider fatigue and general harshness of ride.

7

Clockwise adjustment

Firmer HSC

Counter clockwise adjustment

Softer HSC

BOOST VALVE

Boost Valve (BV) technology delivers position sensitive damping in the last third of the stroke, providing additional support and resistance to bottom-out as the damper is compressed deep into its stroke.

Boost Valve Range (PSI) affects the timing of the bottom-out resistance coming into play, and can be utilised to prevent compression overshoot (excessive travel use).

PSI TOO LOW Excessive use of travel (compression overshoot) with ideal initial square edge bump compliance.

PSI TOO HIGH A lack of overall travel use on large and square edge bumps, while initial control of bump input is ideal.

8

Increase air pressure

Increase ending stroke BV control

Reduce air pressure

Reduce ending stroke BV control

BOTTOM-OUT CONTROL

Boost Valve (BV) technology delivers position sensitive damping in the last third of the stroke, providing additional support and resistance to bottom-out as the damper is compressed deep into its stroke.

Bottom-Out Control (BOC) affects the systemâ&#x20AC;&#x2122;s resistance to bottom-out, offering relatively independent adjustment of the very end of stroke, bottom-out resistance.

BOC TOO SOFT Excessive bottom-out, while bump compliance and travel use are ideal.

BOC TOO FIRM A lack of full travel use, while control of bump input and travel use are ideal.

Clockwise adjustment

Counter clockwise adjustment

9

Increase BOC

Reduce BOC

SERVICE FOX SHOX

Maintenance

Every Ride

Wash shock

X

Inspect for damage

X

Inspect bushes and mounting hardware Advanced Service

Every 30 Hours

Every 100 Hours

X X

Routine maintenance greatly improves the performance and longevity of your FOX Racing Shox suspension product.. ... 10

CONTACT

Tekin Suspension ken@tekinsuspension.com.au facebook.com/Tekin.Suspension 0410-200-082

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