[Closed] Rockshox SID 2012 RL/RCT

A bit of sag is normal. Try adding more oil in10cc increments with a syringe, you will know when you've got too much, it locks out when open or closed, then remove with the syringe.

Damper sounds like a red herring to me - you do know how to correctly inflate/deflate a dual air fork, yes?

(2012 should be dual air)

Also have you tried increasing the floodgate threshold?

Hi,

Thanks for the responses.

I know how to correctly inflate the air chambers, - for sag then match it in the + (+/- 5psi for feel).

If i completely close off the floodgate and 'lock' the suspension, it will sag about 10mm.

what is odd, is if I release all the air and compress the fork it is still about 3mm from bottoming out, which makes me think too much oil..

Maybe the sag when locked is normal?

if I release all the air and compress the fork it is still about 3mm from bottoming out, which makes me think too much oil..

Remove the damper cartridge and try that ? again or try old cartridge and compare results.

The amount of oil sat on top of the air piston will affect travel too.

I imagine there would be a small difference in the amount of oil a cartridge would displace.

My point about the chambers is if you inflate the -ve first, or deflate the +ve before the negative, they can get stuck down a bit.

My 2012 sid RCT3 stay at their extended height when I lock them out.

Too much oil in the lowers can also stop them reaching full travel.

@dirtydog if I remove the damper and compress the fork, won't oil shoot out the top?

@IA the sat is when I put my weight on the bike, as opposed to the + sucking the fork down.

I'm assuming you keep typing + when you mean - (or I'm being an idiot and misunderstanding you), but you've done it twice now so I'll just be crystal clear to be sure:

-ve is the valve on the base of the fork. -ve sucks the forks down. You inflate the + then the - (+- 5 psi or so). When decreasing pressure, decrease the -ve first.

I've seen plenty make the mistake, so wanted to be clear.

What dirty dog says won't make oil shoot out if you compress the fork very slowly.

If you lock them out and then put weight on them, do they move? If not they're fine IMO. It's far easier to do something wrong and make them not lockout (too little oil etc). Too much oil might stop them bottoming but if you can get them within 3mm I'd say that's fine - remember there's the bumpers in the bottom of the lowers to compress before the crown hits the seals (which it shouldn't be able to do).

Yeah, my bad. I inflate the top chamber then the bottom chamber.
The bottom chamber has a slightly higher psi, so it does suck the stanchion down a small amount.
When I am in 'attack position' I get 20% sag, unlocked.
When locked and in 'attack position' I will get about 10-15% sag, but the fork will compress no further than this.
I wondered if this was so the wheel could keep in contact with the ground over small bumps in the road when locked.
Going from what everyone is saying, it sounds like this is not the case.

pjflo - Member

@dirtydog if I remove the damper and compress the fork, won't oil shoot out the top?

Cartridge displaces a lot of oil, was thinking there might be enough room for the oil if the cartridge was removed. You'd have to try it and see, if you where to compress the forks slowly it would be easy enough to see if it was about to overflow.

If i completely close off the floodgate and 'lock' the suspension, it will sag about 10mm.

what is odd, is if I release all the air and compress the fork it is still about 3mm from bottoming out, which makes me think too much oil..

Both sounds perfectly normal to me.

The lock out is not 100% stiff, it has a bit of give in the system to protect the internals from large hits when locked out.

Also stopping 3mm short again is normal. There is usually a o-ring on one stanchion so you can check the sag this needs some space at max travel. Also as IA said there are rubber bumpers inside that will be very stiff to compress so it will be hard getting max travel by just leaning on the bike.

I added about 5ml of oil and it now feels a lot firmer when locked.
It does move a little, but only 3mm or so.

unlocked it feels the same and 'bottoms out' around the same place.

All good. Thanks.