Rockshox SID setup

[Pfennig]

Can anyone help me with how to setup some SIDs? I've never had any of these and am a bit puzzled by the number of air valves... There seems to be one on the top of the drive side fork leg and two on the non-drive side, one at either end.

Can anyone tell me what each of these do? I presume the one at the bottom of the non-drive side is for the negative air spring... are the other two both the positive air spring? Should they all be at the same pressure?

The forks are the ones shown on the bike below. Any help with the setup would be great! I don't really want to just dive in and ruin anything.

cheers

 

[Blackstar]

I read somewhere about these...

[wrong info deleted]

Best find a manual on the net to figure out which is which.

Unless someone on here has experience with them. :?:

 

[warpedboy2]

Try this- http://www.birota.ru/manuals/rockshox/s ... awings.pdf

FWIW, I have two pairs of SIDs, but mine don't have the negative air chamber in the bottom of the leg. From what I can gather, the left leg is the negative chamber, and I have it set up with around 40% of the pressure in the compression chamber.

Hope this helps.

 

[Anthony]

You have a 1999 fork there. It has positive chambers at the top of each stanchion and a negative chamber at the bottom of the non-drive side.

 

[Pfennig]

Cool, any tips on setting them up?

 

[Anthony]

This is from the owners manual (it must be on the web somewhere, but I can't remember where - not the site that Marcus quoted though)

63 and 80mm Travel SID XC/SL
Rider Weight lb. (kg)-------Main Air Spring (psi)---Negative Air Spring (psi)*
<130 (60kg)------------------------ 40 ------------------------- 60
120 to 150 (55 to 68 kg)--------- 50 ------------------------ 80
140 to 170 (64 to 77kg)---------- 60 ----------------------- 100
160 to 190 (73 to 86kg)---------- 70 ------------------------ 130
180> (82kg)------------------------- 80 ------------------------ 150

* Negative air pressure selected based on more supple ride

 

[Pfennig]

Thanks Anthony, so just to check. is that the same pressure in both of the top air chambers?

cheers

 

[Anthony]

Thanks Anthony, so just to check. is that the same pressure in both of the top air chambers?
cheers

Yes, same each side. Also add pressure in the negative chamber if you want more comfort, reduce if you want a livelier ride.

This TMB feature may be helpful, but please note that for some reason they recommend pressures different from those in the owners manual. If you want that, just send me your email in a PM.

 

[Brettels]

Sids

I have the same Sids on my Xizang.

I have about the same pressure in all three chambers, about 85psi.

Pump up the negative chamber first, then pump up the 2 top chambers.

See the below link as I found this very useful:

http://www.drystonepaul.com/maintenance ... t_1999.jpg

 

[Pfennig]

Thanks guys, exactly what I needed!!