My rear Suspension Problem??
Hello i recently been having some trouble with my rear suspension. well the shock is stuck at the lowest position. i have been trying diffrent things but i have no idea what i am doing i think it might have something to do with the rebound knob but i dont know
I think that needs to be sent back to rock shock to be fixed.
There's no app for this.
Oh, yeah, to say the least...
Originally Posted by Maida7
It's what happens when the owner's manual isn't followed, and I suspect that's what's happened here. From Rock Shox:
MA I N T E N A N C E
After Every 8 Hours of Riding
• Clean your shock with mild soap and a toothbrush. Keep the body clean and lubricated.
• Never use a high-powered washer to clean the shock.
• Keep mounting hardware clean and lubricated. Refer to your bicycle’s owner’s manual for correct mounting hardware torque values. Also be sure to verify that your
shock’s mounting hardware is properly torqued (60-in-lb).
• Over-torqued mounting hardware will cause the shock to bind and malfunction. Under-torqued mounting hardware can damage frame, hardware, and shock.
After Every 20 hours of Riding
Remove, clean, and grease mounting hardware.
AIR CAN SERVICE
1. Release air in shock. Remove valve stems.
2. Using RockShox Spanner wrench, loosen completely Lock can. Remove air can from shock.
3. Closely inspect the inside finish of the air can. Check for nicks or scratches that could cause damage to the o-rings. Check the leading edge of the can for any sharp
burs that could damage the can o-ring or fixed piston glide ring.
4. Inspect all o-rings, wipers and glide rings for damage. Lubricate each o-ring, wiper and glide ring.
5. Lightly lubricate the SID Rear shock body. Gently slide the air can onto the SID Rear shock body.
6. Orient the air valve properly and lightly snug the lock can.
7. Re-install valve stems.
S E R V I C E
The SID rear shock should be fully serviced every year by a qualified technician with proper tools. Please contact your local
RockShox dealer, RockShox Technical Services, or the nearest distributor in the International Distributors List.
Read the Warranty section for further warranty repair and contact information.
ya i get the point that it need to be sent back but i want to know what is wrong with it i have a race in a week and dont have time to sent it back
There's no app for this.
It's an air shock that
won't hold air. Find a local LBS that can help you out before the race.
Other than that, like a flat tire that won't hold air, repair/replace (the shock) is all you can do.
no it holds air fine it is almost like it is seased closed if i remove all the air should it move freeley?
Are you pumping up the negative spring chamber? If so the more air you add, the harder it will be to pry apart.
Try removing air from both chambers and then only filling the positive air chamber...see if it will come apart then.
ok i will try that but it is almost bottomed out if not it is. and it has about 200psi in the positive how much should be in the negative
I post too much.
The shock is getting old, it happens... I'd try and find a replacement while you are sending it back.
There's no app for this.
owners' manual here
Originally Posted by ryan44
Selecting Air Pressure (Spring Rate):
1. Depressurize the positive and negative air chamber by removing the air cap and depressing the valve
2. Because every bike is different, a good starting point is to pressurize the positive air chamber to an air
pressure equaling your body weight.
NOTE: AS BICYCLE DESIGNS DIFFER SIGNIFICANTLY, YOUR BICYCLE MAY REQUIRE DIFFERENT PRESSURES
OR SET UP TECHNIQUES. THESE INSTRUCTIONS ARE INTENDED AS A GUIDELINE ONLY.
3. After adding air to your shock based on your body weight, and without sitting on the bike, measure the
distance from the rear axle to the seat (rear height). Write it down.
4. While you sit in a normal riding position, have a friend measure the same distance. The difference
between the two measurements is sag. Determine what percentage of total wheel travel this sag
5. If the sag is less than your bicycle manufacturer’s recommendation, a lower air pressure should be used.
If the sag is greater than your bike manufacturer’s recommendation, a greater air pressure should be
IMPORTANT: DO NOT USE AIR PRESSURE OUTSIDE THE 100 TO 250 PSI RANGE.
6. Once sag has been set, pressurize the negative air chamber to match the positive air chamber pressure.
TIP: ADJUSTING THE NEGATIVE AIR CHAMBER DETERMINES THE EASE OF INITIAL COMPRESSION. THE
HIGHER THE AIR PRESSURE YOU PUT IN, THE EASIER IT IS TO COMPRESS THE SHOCK.
7. Measure the sag once again to make sure it is the same. Write down the measurement and air pressure
reading from the shock.
8. Install both air caps.
Example: If your bike has 4” of rear wheel travel and you want to set it up for cross-country
riding, your sag should be 0.6 - 1.2 in. If you weigh 175 lb., pressurize the positive chamber to
175 psi and measure your sag. Then pressurize the negative air chamber to 175 psi and
NOTE: IT IS IMPORTANT THAT THE SHOCK HAS THE AIR VALVE CAPS ON AT ALL TIMES OR THE SHOCK CAN
PREMATURELY LOSE AIR.
Rebound Damping Adjustment (Some Models)
The shock includes a red rebound damping adjustment knob. Rebound is the extension or return
stroke of the shock. Rebound damping adjustment allows you to control the rate at which the
shock extends after it is compressed. The shock’s rebound is quickest when the adjustment
knob is in the full counterclockwise position. Rebound is slowest when the adjustment knob is
in the full clockwise position.
When you are setting rebound, a good starting point is the “curb” test. Be sure this is done after
you set up your sag.
1. Set your rebound adjuster fully counterclockwise.
2. Ride the bike off the curb sitting in the saddle and count the number of times the shock bounces
before returning to nominal sag. You want to achieve one bounce.
3. Turn the rebound adjuster a quarter turn clockwise and ride off the curb again. Continue to do
this until one bounce is achieved.
4. Record the number of turns from the fully closed (full counterclockwise) position.
It's stuck closed. I think that happens sometimes to air shocks. In the manual for my fox shock it says if it gets stuck closed you need to send it back to fox to get fixed. Why not call rock shox or find a local dealer who knows how to service shocks.