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Just been tinkering with the air in my dual air revelations and it got me thinking. Does the frame and geometry change the amount of pressure required?
I tried to set the sag with NO negative air and ended up with about 50psi in the positive chamber (i am 12 stone) this cannot be right, so how do yous et the pressure correctly in air revelations (dual air)
anyone help?
To answer the first question, probably, to answer the second, isn't there a label on the fork? there is on Rebas.
Set the two chambers equal and tweak from there. On a 100mm reba at 11st i am running around 100psi in both if that helps any.
Technically frame and geometry, and positioning will all affect pressure, but in such a small way as to be unimportant. I'm guessing by the tag you've got full sus...in which case if your rear shock pressures are too low then your forks wont be responding properly. If your getting about 20% sag at the back, then its right. 50psi up front does sound low...
You are trying to set them up right though, so possibly theres another issue with them.
easiest way is to get the bike to a shop that actually knows how to set suspension up properly (lots dont!) and get it balanced for you.
Hope that helps
To be honest their cannot be anything wrong with the forks as this has always been the case and i have had full travel before etc. How can the sag be set with no negative air
Oh have set em at 120+ve and 130-ve
negative pressure shouldn't be higher than positive pressure...otherwise you're decreasing available travel! The negative counteracts the positive side to allow for easier breakaway from static. If you have higher negative pressure then it'll overcome the positive side and squash your forks down...
Sag should be set once you've setup both positive and negative pressures...since those pressures will affect sag!
So try them at 120+ & - and adjust from there...
Loco recommend setting the -ve 5-10psi higher for small bump compliance