What PSI in rear shock for 14st rider

GrantyBoy

14st or 90kg
How much air should I be running in my rear 2006 Fox DHX 3 air shock on my Spesh Enduro. I keep pumping the thing up but my sag always seems to be at about half way.

Should I keep pumping air in untill I get the 1/3 travel for sag or can you blow the shock by pumping too much air in???
Is there a limit to this shock rider weight wise?

nicklouse

add air untill you get the correct sag.

that is all there is to do nothing else nothing more. Just set the sag and that is correct.

then you can start adjusting the setting of the damping and tweak the presure to your riding.

So to sum up. you need what ever presure you need to achive the correct sag.

GrantyBoy

Just warry I'm going to blow some seals or the like

nicklouse

nope you wont.

dave_hill

GrantyBoy wrote:

Just warry I'm going to blow some seals or the like

A good starting point is 75% to 85% of your body weight - as you weigh 196lbs (14 stone) you should start with a pressure of around 147psi to 166psi.

nicklouse

dave_hill wrote:

GrantyBoy wrote:

Just warry I'm going to blow some seals or the like

A good starting point is 75% to 85% of your body weight - as you weigh 196lbs (14 stone) you should start with a pressure of around 147psi to 166psi.

Unfortunatly that is not correct. As it all depends on the leverage ratio of the suspension design.

dave_hill

GrantyBoy asked what pressure he needed, I gave him a starting point.

All bikes are different and riders are different, but the bloke was asking for some advice so I gave him a more definite answer than, "you need to put in whatever is the correct pressure".

I'm sure that he isn't stupid and had probably worked that out for himself already! He's never going to learn anything if he doesn't know where to start!

deadpool2e

this link will give you the manual pdf which tells you the pressures for your weight.

http://www.specialized.com/bc/SBCGlobal ... anguage=US

go to the 06 enduro shock set up.

hope that helps

skyliner

dave_hill wrote:

GrantyBoy asked what pressure he needed, I gave him a starting point.

All bikes are different and riders are different, but the bloke was asking for some advice so I gave him a more definite answer than, "you need to put in whatever is the correct pressure".

I'm sure that he isn't stupid and had probably worked that out for himself already! He's never going to learn anything if he doesn't know where to start!

At 14st, his shock pressure would have been higher than that already to acheive 50% sag.
The best way to set up a shock is to sit on the bike in your riding kit, and look for 30% sag. Setup guides are just that, guides. To get it right for the idividual, you need to first get the sag right, and then adjust to your preferences. This, I feel is what Nick's post alluded to.
If you find the spring rate is too linear with the correct sag, you can tune it by getting your LBS to part fill the high volume chamber with grease to control the amount of air dumped across during compression.This can be done while the air sleeve maintenance is carried out, and will improve feel for the more aggressive, or heavier rider.