Front Fork pressure after following guide WMB issue No. 84

Edward Teach

Had a decent ride over the weekend and felt that my front suspension was too hard. So I thought I would follow the setup guide in WMB No.84, but I have a difference of 50psi on what the manufacture suggests and what I have after following the guide. Can this be correct? Or have I miscalculated.

Front Fork is a "Rock Shox Reba SL" 100mm travel (measured)
My weight is 98kgs with gear on.
Sag according to the guide should 25% ie 25mm

Suggested manufactures PSI for my weight is in the range 90kgs - 99kgs = 145psi - 160psi. I had the pressure set at 150psi. At this pressure there is no sag.

After following guide I have the pressure set at 100psi, This gives me my 25% sag when sat static on the bike.

Have I miscalculated?

supersonic

No, that is fine! Always go on sag. RS recommended pressures are usually way too high.

nicklouse

as Sonic says.

there is no magic and you do not need a gauge. just add air until the sag is correct.

you should bottom the suspension out once or twice on a ride.

Edward Teach

Thank you

toasty

I've never known anyone needing as high as the recommended figure on RS forks, crazy numbers. I had to take about 20-25% off the recommended as well to get anything decent (on both Rebas and Revelations).

dirtbiker100

phew. glad others have said this. RS said 50+ psi for totems at my weight whereas i'm happy at 40. thanks for peace of mind!

warrerj

I'm about the same weight as you and have 110-120psi + and - in my Reba's

I like my forks quite firm.

nicklouse

warrerj wrote:

I'm about the same weight as you and have 110-120psi + and - in my Reba's

I like my forks quite firm.

As i keep saying what person X uses is not any use. even if you have the same fork and way the same. UNLESS the bikes are the same (including size).

Air springs are very very simple you add air until the sag is correct for YOU and YOUR bike in YOUR normal riding clothes that is it. it does not matter if it is a fork or a shock.

stumpyjon

Well if only one thing is confirmed from this thread' it is that RS recommended pressures are way over the top. I'd been wondering this myself, I've set my Rebas up for the sag I wanted but it was way below the recommended pressure. I didn't expect them to be bob on for the recommeneded pressure but I did expect them to be plus or minus 10psi.

realnumber 1

I always thought you where meant to set the sag on the forks whilst in an aggressive (stood up) position rather than when sat on the seat like the OP says?

PhilSm

realnumber 1 wrote:

I always thought you where meant to set the sag on the forks whilst in an aggressive (stood up) position rather than when sat on the seat like the OP says?

That's intersting - I wondered whether that was the case, as I've also had to set my Fox fork much lower than the recommended settings to get the required SAG - but I've been doing this sat down.

Anyone got anything to add on the stand up / sit down point ?

TIA,
Phil.

nicklouse

normal riding position.

which is standing on the pedals over the bars for XC use. while DH it is not.