FOX RP3 SHOCK PRESSURE

[ark]

can someone please tell me what pressure to pump a fox rp3 shock. i weigh 86kg's

[ark]

HELLO HEllo Hello hello, anyone ???

[AndreZA]

Measure the sag. It should sag about 25-30% when you climb on. Don't bounce when you get on.

[ark]

oh ok, is there no chance of blowing any seals etc.. if i pump it too hard, cos i pumped it about 10 bar and it still sags about 60%

[MichaelI65]

Settings for RP23

Setting Sag

You can also view a Flash

video on Setting Sag.

To set sag:

1. Measure

   sag

   , and compare it to the recommended sag setting shown in the Air Spring Setting Guidelines table

   below. Continue if the sag is not to specification.

2. Locate the Schrader

   air valve on the shock and remove the air valve cap.

3. Screw the FOX

   Racing Shox High Pressure Pump

   onto the air valve until the pump shows

   pressure on the gauge. Do not over-tighten.

4. Add air pressure until

   desired pressure is shown on the gauge. Refer to the Air

   Spring Setting Guidelines table below for the proper sag setting.

5. Unthread the pump from

   the air valve and measure sag.

6. Repeat steps 2-5 until

   proper sag is achieved, then replace the air valve cap.

 

 

AIR SPRING SETTING Guidelines
Shock Travel (in./mm)	Sag (in./mm)
1.00/25.4	.25/6.4
1.25/31.7	.31/7.9
1.50/38.1	.38/9.5
1.75/44.4	.44/11.1
2.00/50.8	.50/12.7
2.25/57.1	.56/14.2

 

[splat]

oh ok' date=' is there no chance of blowing any seals etc.. if i pump it too hard, cos i pumped it about 10 bar and it still sags about 60% [/quote']

 

Your shock could possibly be 'stuck down'.

From Fox manual:

Under certain circumstances, a FLOAT or DHX AIR shock can become "stuck down. If your FLOAT shock has not returned to its original neutral length (eye-to-eye position),

DO NOT

attempt to disassemble the outer air sleeve or any other part of the shock. Air has become trapped in the air negative chamber and can cause serious injury if the shock is disassembled. This condition is known as stuck down.

If your shock is stuck down, immediately return it to FOX Racing Shox or an Authorized Service Center for service.

Procedure to check for a "stuck down" shock:

1. Release air pressure from the shock by removing the air cap and depressing the Schrader valve. You can use the top of the air cap to press in the Schrader valve.

2. Using a FOX Racing Shox High Pressure Pump, pressurize the shock to 250 PSI

.

3. If the shock does not extend, it is stuck down.

4. Contact FOX Racing Shox or an Authorized Service Center to obtain repair/service information.

[ark]

shot, ingsma & splat !!

really appreciate !

 

[AndreZA]

Okay, I checked mine last night as I have a little mark on my pump to take away all the guessing. I use 130psi and my weight fluctuates between 84-88kgs.

[Wyatt Earp]

oh ok' date=' is there no chance of blowing any seals etc.. if i pump it too hard, cos i pumped it about 10 bar and it still sags about 60%

 

[/quote']

 

10 bar is only around 140 psi.

[Wyatt Earp]

Okay' date=' I checked mine last night as I have a little mark on my pump to take away all the guessing. I use 130psi and my weight fluctuates between 84-88kgs.[/quote']

 

You must be quite light when you add kit.

 

What bike is this on ?

 

ARK

 

Silly question, are you using a shock pump ?Summit Cycles2009-04-21 00:21:09

[ark]

 

Okay' date=' I checked mine last night as I have a little mark on my pump to take away all the guessing. I use 130psi and my weight fluctuates between 84-88kgs.[/quote']

 

You must be quite light when you add kit.

 

What bike is this on ?

 

ARK

 

Silly question, are you using a shock pump ?

.

.

yip, it's a shock pump. i'm riding a GT i-drive four

 

[Wyatt Earp]

Ark

 

If you are only getting 60 % sag and you want the shock harder then add more air, 140 psi is not a lot and nowhere near the limit of the shock.

[ark]

ok, i pumped this thing 250psi, still no difference, but i notice that the shaft that sticks out is quite short as if the shock is not stretched out to it's full maximum when not in use. maybe it needs a service ?????

should i deflate it & then re-pump it to see if it pushes out ?

 

[AndreZA]

ok' date=' i pumped this thing 250psi, still no difference, but i notice that the shaft that sticks out is quite short as if the shock is not stretched out to it's full maximum when not in use. maybe it needs a service ?????should i deflate it & then re-pump it to see if it pushes out ?

 

[/quote']

 

 

 

that sounds like it is sucked in or stuck down as described earlier. It will need to be take apart, by someone who knows what they are doing, so that the air in the negative chamber can be released.

[Wyatt Earp]

ok' date=' i pumped this thing 250psi, still no difference, but i notice that the shaft that sticks out is quite short as if the shock is not stretched out to it's full maximum when not in use. maybe it needs a service ?????should i deflate it & then re-pump it to see if it pushes out ?

 

[/quote']

 

 

 

that sounds like it is sucked in or stuck down as described earlier. It will need to be take apart, by someone who knows what they are doing, so that the air in the negative chamber can be released.

 

Yip, and DO NOT try this yourself.

[turtlek]

i second summit's last words!!!!!!!