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Dyad RT2 REAR PULL SHOCK

General Maintenance | Before You Ride | Sag Setup | Adjusting Rebound | Adjusting Travel | Remote Control Lever and Cable Installation | Maintenance Service Intervals | Important Safety Information 


features

Factory-tuned & fully independent rebound & compression damping controls for long and short travel modes, patented oil flow circuitry, travel adjust, rebound adjust, positive & negative air chamber adjust (spring curve configuration)

spring

air

intended use

XC, AM, Freeride

Parts Legend

ELEVATE - Short Travel Rebound
FLOW - Long Travel Rebound
Negative Air Valve
Positive Air Valve
Valve Cap
Long Travel Chamber
Short Travel Chamber
Spool Chamber
Spool Chamber End Caps
Fixed Eyelet
Shaft Eyelet
Cable Anchor
Cable Set Screw
Remote Lever Cable
Cable End Cap
Ferrule
Remote Lever Cable Housing
Bridge
DU Bushing
Reducer
Main Chamberreleasing

General Maintenance

CAUTION:  Internal servicing must only be performed by FOX Racing Shox or an Authorized Service Center.

WARNING:  THE DYAD RT2 SHOCK IS NOT USER SERVICEABLE, OTHER THAN REMOTE CONTROL CABLE REPLACEMENT. NEVER ATTEMPT TO REMOVE THE SPOOL CHAMBER END CAPS FOR ANY REASON! ATTEMPTING TO PERFORM ANY INTERNAL SERVICE PROCEDURE ON THIS SHOCK CAN POTENTIALLY RESULT IN SERIOUS INJURY OR DEATH.

Before You Ride

  1. Clean the outside of your shock with soap and water and wipe dry with a soft dry rag. Never use a high pressure washer on your shock.
  2. Inspect the entire exterior of the shock. The Dyad RT2 shock should not be used if any of the exterior parts appear to be damaged. Contact FOX for further inspection and repair.
  3. Check that quick-release levers (or thru-axle pinch bolts) are properly adjusted and tightened.
  4. Check the headset adjustment. If it is loose, adjust the headset accordingly with manufacturer’s service recommendations.
  5. Check whether the brake cables or hoses are properly fastened.
  6. Check the front and rear brakes for proper operation on flat land.

Adjusting Travel

Note:  To help improve the service life of the spool valve return spring, set the Dyad to long travel mode before storing your bike. Doing this will help overcome any friction buildup in the spool assembly as your bike sits unused.

Dyad RT2 Sag Setup

To attain the best possible performance from your Dyad RT2 shock, it is necessary to first set sag. The recommended sag range is 33%-40% of total travel.

The Dyad RT2 Travel Adjust feature enables you to set sag deeper than any other FOX air shock, without sacrificing the pedaling platform necessary for best climbing efficiency.

WARNING:  DO NOT SET POSITIVE AND NEGATIVE AIR PRESSURES OUTSIDE THE LOW AND HIGH AIR PRESSURE RANGE LIMITS ESTABLISHED FOR MAXIMUM PRODUCT SAFETY, AS SPECIFIED BELOW. SETTING AIR PRESSURES BELOW OR ABOVE THESE RANGE LIMITS CAN CAUSE SEVERE DAMAGE TO YOUR DYAD RT2 SHOCK, AND POTENTIALLY RESULT IN SERIOUS INJURY OR DEATH.

Note:  If positive pressure is ever released prior to releasing negative pressure, this will cause the shaft to extend from the shock, but by itself will not cause any permanent damage. If this happens, do not cycle or ride the shock in this state. To restore the shock to its normal pressure state:

  1. Release the negative air pressure.
  2. Attach the Cannondale high pressure pump and increase positive pressure until the shaft completely returns into the shock.
  3. Follow steps 2 through 5 in the Setting Up Shock Sag procedure below.

Air Spring Pressure & Rebound Settings

Total Rider Weight Air Spring Pressure Settings Rebound Setting Positions
# clicks counter-clockwise (CCW) out from closed
         
Positive Chamber Negative Chamber
lbs kg psi bar psi bar
100 - 109 45 - 49 188 13.0 159 11.0 12 CCW out
110 - 119 50 - 54 207 14.3 175 12.0 12 CCW out
120 - 129 54 - 59 226 15.6 191 13.1 12 CCW out
130 - 139 59 - 63 245 16.9 206 14.2 11 CCW out
140 - 149 64 - 68 264 18.2 222 15.3 10 CCW out
150 - 159 68 - 72 282 19.5 238 16.4 9 CCW out
160 - 169 73 - 77 301 20.8 254 17.5 8 CCW out
170 - 179 77 - 81 320 22.1 270 18.6 7 CCW out
180 - 189 82 - 86 339 23.4 286 19.7 6 CCW out
190 - 199 86 - 90 358 24.7 302 20.8 5 CCW out
200 - 209 91 - 95 376 26.0 318 21.9 4 CCW out
210 - 219 95 - 99 395 27.3 334 23.0 3 CCW out
220 - 229 100 - 104 414 28.6 349 24.1 2 CCW out
230 - 239 104 - 108 433 29.8 365 25.2 1 CCW out
240 - 249 109 - 113 450 31.1 381 26.3 0 CCW out (100% clockwise closed)

Note:  It is crucial to follow the setup procedure steps exactly in sequence as presented below. A failure to do this can result in poor performance of the Dyad RT2 shock.

Setting Up Shock Sag

  1. Set the shock into long travel mode by pressing the silver button with your knuckle to release the actuation lever.

  2. Release all the air pressure from the negative air chamber.

  3. See the Air Spring Pressure & Rebound Settings table above. Look up your total rider weight range (dressed to ride) to determine your air pressure settings for the positive and negative air chambers.
  4. Using the Cannondale high pressure pump supplied with your bicycle, set your air pressure in the positive air chamber.

    WARNING:  NEVER USE ANY HIGH PRESSURE HAND PUMP WITH A MAXIMUM TOTAL PRESSURE RATING OF LESS THAN 450 PSI (31.03 BAR) TO SET AIR PRESSURE IN THE POSITIVE AND NEGATIVE AIR CHAMBERS. DOING SO RISKS CAUSING PERMANENT DAMAGE TO THE PUMP BESIDES GETTING AN IMPROPER PRESSURE SETTING, WHICH CAN CONTRIBUTE TO A LOSS OF RIDER CONTROL RESULTING IN SERIOUS INJURY OR DEATH.


  5. Using the Cannondale high pressure pump, set your air pressure in the negative air chamber.

    WARNING:  NEVER USE A FLOOR PUMP TO SET AIR PRESSURE IN THE POSITIVE AND NEGATIVE AIR CHAMBERS. DOING SO RISKS CAUSING PERMANENT DAMAGE TO THE FLOOR PUMP BESIDES SETTING IMPROPER AIR PRESSURES, WHICH CAN CONTRIBUTE TO A LOSS OF RIDER CONTROL RESULTING IN SERIOUS INJURY OR DEATH.


  6. Set long travel mode rebound (flow). First, make sure the Dyad RT2 is in the long mode by pressing the silver button to release the actuation lever. Refer to the Air Spring Pressure & Rebound Settings table for your long travel rebound setting position, as a good starting point.
  7. Set the short travel mode rebound (elevate). First press the remote actuation lever down until it clicks into place, to place the Dyad RT2 into short travel mode. Refer to the Air Spring Pressure & Rebound Settings table for your short travel rebound setting position, as a good starting point.

CAUTION:  Do not ride or cycle the suspension with shock pressures outside the established pressure range (positive 100-450, negative 0-400), as these actions may cause damage either to the shock or you, or both.

If for any reason your shock pressure settings are outside the normal range, do the following to restore the shock to its normal pressure state:

  1. Release the negative air pressure.
  2. Attach the Cannondale high pressure pump and increase positive pressure until the shaft completely returns into the shock.
  3. Follow steps 2 through 5 in the Setting Up Shock Sag procedure.

Adjusting Rebound

WARNING:  DO NOT PLACE YOUR FINGERS WITHIN A MOVING LINKAGE. ATTEMPTING TO ADJUST REBOUND ON YOUR DYAD RT2 WHILE SITTING OR RIDING IN MOTION ON YOUR BICYCLE CAN LEAD TO A SERIOUS HAND INJURY OR A LOSS OF RIDER CONTROL, WHICH CAN RESULT IN SERIOUS INJURY OR DEATH.

With the Dyad shock, rebound controls the rate at which your rear wheel returns after it has been compressed. The proper rebound settings for long (flow), short (elevate), or both travel modes are of personal preference, varying with rider weight, riding style and terrain. A basic rule of thumb is to set rebound to be as quick as possible, without kicking back and pushing you off the saddle.

Tip: Start with your suggested rebound setting values in the Air Spring Pressure & Rebound Settings table. Spend some time experimenting with various long and short travel rebound setting combinations, to develop a better familiarity with your Dyad RT2 shock.

For slower rebound, adjust the red knob clockwise, long or short travel.

For faster rebound, adjust the red knob counter-clockwise, long or short travel.

Note:  Always be certain that your remote actuation lever is set to the travel mode for which you are adjusting rebound.

If you want more or less sag, choose the next lighter or heavier rider weight range in the Air Spring Pressure & Rebound Settings table. Repeat steps 1 through 7 of the Dyad RT2 Sag Setup procedure with the new air pressure settings.

Remote Control Lever and Cable Installation

  1. For the easiest, most efficient cable replacement operation, remove the Dyad RT2 from the bicycle frame.
  2. Thread a new derailleur cable (1.2 mm) into the remote lever.

  3. Feed the cable under the bridge, through the shock spool chamber, and out the shock cable anchor.

    Note:  If you're having trouble feeding the cable through the spool chamber and past the anchor set screw, make sure that you have a new or cleanly snipped cable, or the anchor set screw is backed out far enough.

    WARNING:  NEVER ATTEMPT TO REMOVE THE SPOOL CHAMBER END CAPS FOR ANY REASON! UPWARDS TO 450 PSI (31 BAR) CAN PROPEL AN END CAP WITH EXTREME FORCE AND VELOCITY, POTENTIALLY RESULTING IN SERIOUS INJURY OR DEATH.


  4. Pulling the cable taut, tighten the cable anchor set screw firmly (4-6 in-lb torque).

  5. Snip the cable ~0.5" above the cable anchor, and cap it.

  6. Install the Dyad RT2 back into the bicycle frame.

  7. Test for normal functionality.



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