RS SID RLT PSI

welsh_14

I recently got my first air fork which is a 2011 RS SID RLT. I followed the air pressure guides on the side of the fork for my weight, but i dont seem to be getting use of the full travel. I put air in the +ve and -ve chambers and adjusted the rebound to half way between slow and fast. I've done about 150 miles on them so far so would have thought they would be bedded in by now. Have i missed something out in the setup stage?!
Since I've never had an air fork before can anyone suggest how I can get use of the full travel. I also wanted a more supple feel over small bump as they seem quite "stiff" over the smaller bumps.

benpinnick

I would reduce the air in the fork, and even more so the -ive chamber. I find the guide on the SID is way to high on the negative side, and too hard on the +ive side. Not that would stop you going through the travel, but as a general guide.

supersonic

Forget the guides. Set the fork up to give you 25% sag, then experiment with the negative chamber.

Greer_

try adding enough air to get the sag (usually 20-30%) you want rather than using the guide, then adjust the air in each chamber to suit your needs - if you're not using the full travel, it seems like you need to decrease the amount of air in both chambers

386ka

Yep, as above, follow the sag, 25% +-5%. And if your fork then feels stiff and not sensitive enough to small bumps, increase the pressure to the negative chamber relative to the positive one.

welsh_14

Thanks for that guys! so does the +ve chamber deal with the sag and -ve with the travel use and bump response?! I've got it set up so it has between 25-30% sag as suggested. So once the sag is set should I then leave the +ve chamber and just experiment with the -ve?
Sorry for the noob questions but i've only ever had coil forks before!
386ka so what you think is I need more air in the -ve than the +ve to increase sensitivity?

supersonic

Empty out the negative chamber. Then inflate the positive to 100psi. Inflate the negative to 100psi. Check sag. Then remove or add air in 5psi increments (one after the other) until you get 25% sag.

Then ride. If you want a more supple start, add upto 15psi to the negative chamber. Firmer, decrease by upto 15psi.

benpinnick

Ive found that having the same in +ive and -ive means that the forks sit into their travel without any weight on. Any ideas on that SS?

welsh_14

Thanks supersonic! i'll give that a go. Why cant RS just right that in a manual with the forks!!

supersonic

benpinnick wrote:

Ive found that having the same in +ive and -ive means that the forks sit into their travel without any weight on. Any ideas on that SS?

Release all the negative air. Do the forks fully extend?

benpinnick

Yeah, they are fine at around 75% of positive, but if totally balanced they sit about 20mm into the travel. Its 80mm of nice travel, but I lose the 20mm.

nicklouse

benpinnick wrote:

Yeah, they are fine at around 75% of positive, but if totally balanced they sit about 20mm into the travel. Its 80mm of nice travel, but I lose the 20mm.

Sounds perfect with 20% sag.

cooldad

nicklouse wrote:

benpinnick wrote:

Yeah, they are fine at around 75% of positive, but if totally balanced they sit about 20mm into the travel. Its 80mm of nice travel, but I lose the 20mm.

Sounds perfect with 20% sag.

But that's without weight on them.

benpinnick wrote:

Ive found that having the same in +ive and -ive means that the forks sit into their travel without any weight on. Any ideas on that SS?

nicklouse

Ah missed tht bit. Then something is wrong with them.

bails87

nicklouse wrote:

Ah missed tht bit. Then something is wrong with them.

Really? I'm sure my Revs (2011 RLT Ti) do this, my Rebas (2008 Race) did too

supersonic

Mine do a little, but is hard to judge exact pressures - but certainly not 20mm!

benpinnick

Of course, It might just be that one of the pumps is knackered, and by chance its always the same one I use on the negative