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Introduction

4

Tri-Valve Technology (TVT)

In addition to the main piston in the compression leg TVT cartridges also employ a third piston which gives a 
great deal of flexibility when designing the damping curve for a specific application. This piston also utilizes 
shims in much the same way as the main compression piston but with this design the shim stack is 
preloaded. During slow to medium speed movements of the fork in compression such as braking or through 
undulations in the road the damping is created by the main piston. As the pressure in the compression 
cartridge reaches a certain point the preload on the second piston will be overcome and oil can now flow 
through the TVT ports reducing overall damping for the higher fork speeds.

The main piston in a TVT fork cartridge can be valved to create firmer damping in the low to mid speed 
range of compression velocities giving improved brake support and control of weight transfer leading to 
improved rider confidence. With a single compression piston design this would normally result in unwanted 
high speed damping forces being generated at higher compression velocities such as square edged bumps 
and surface irregularities. 

On track, professional riders have praised the system describing new found levels of confidence particularly 
during high speed , hard edge bumps which combined with hard braking and cornering forces would 
normally unsettle a well damped set up. Likewise on the road this system has allowed new levels of 
compliance on bumpy poorly surfaced roads.

Содержание TVT22

Страница 1: ...TVT22 FORK CARTRIDGE Installation Instructions...

Страница 2: ...uld stop using the product immediately and contact Nitron for technical advice WARNING Failure to comply with the installation and maintenance procedures may result in avoidable damage caused to the s...

Страница 3: ...immed piston which provides significant improvements in performance over the OEM set up Function The damping system is divided between each fork leg with the right hand side cartridge controlling the...

Страница 4: ...flow through the TVT ports reducing overall damping for the higher fork speeds The main piston in a TVT fork cartridge can be valved to create firmer damping in the low to mid speed range of compressi...

Страница 5: ...er Tube 4 Upper Spring Seat 5 Spring 6 Bump Stop Spacer Tube 7 Plastic Spacer 8 Bump Stop 9 Lower Spring Seat 10 Cartridge Tube 11 Adaptor 12 Aluminium Lock Nut 13 M10 Lock Nut 14 M10 Washer 15 Piston...

Страница 6: ...ork has had it is recommended to replace the seals and to check the condition of the bushes For optimal performance of your fork it is crucial that these are in good condition and to tolerance You sho...

Страница 7: ...02 fully synthetic fork fluid please see specification sheet for quantity required NTT050473 Molykote 33 White Grease NTT050476 Loctite 243 Medium Strength Loctite NTT050477 Loctite 270 High Strength...

Страница 8: ...ury If there is preload adjustment make sure this is backed off first WARNING There will also be a copper crush washer with the bolt make sure you remove this and discard it as it may be stuck in the...

Страница 9: ...removed from the fork tube Remove the bottom out cone from the very bottom of the lower fork tube Step 10 Thoroughly clean the fork tubes Install the seals and bushes and then insert the inner tube in...

Страница 10: ...g and the compression cartridge in the left hand leg Be careful not to mix the two cartridges up it is advisable to work on one fork at a time WARNING Step 1 Install The Cartridge Into The Fork Instal...

Страница 11: ...be and the piston rod all the way down Using a suitable oil level tool add or remove oil to obtain the specified oil height refer to the specification sheet for your model specific air gap measurement...

Страница 12: ...of the piston rod to the top of the lock nut 12 Step 8b Setting The Lock Nut Install the aluminium lock nut and tighten securely against the steel M10 lock nut X It is imperative that the locknut is i...

Страница 13: ...d spring preload cap Pull the piston rod upwards and then insert a 17mm spanner through the window in the spring preload cap You can now remove the piston rod holder tool Final Assembly Instructions S...

Страница 14: ...ctions 14 Step 11 Top Cap Tightening Remove the 17mm spanner and then pull the inner fork tube up and screw the top cap into it Tighten to 10N m using the top cap specific tool for your model see spec...

Страница 15: ...wise position Adjusting spring preload will change the amount of initial force required to compress the springs a given distance in relation to their rate This will effectively raise more preload or l...

Страница 16: ...16...

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