Uni Posted August 9, 2014 Share Busy prepping my bike for early tomorrow notice the shocks have come back from service on Friday too soft, I.e just leaning on the handle bars it bottoms out. -30 psi Tried googling - there must be a formula - x kgs = X psi ? Edited August 9, 2014 by Uni Link to comment Share on other sites More sharing options...
Sepia Posted August 9, 2014 Share Hi Uni, Don't know what my fork pressure is but I pump it up, get on the bike in a doorway and then get off. My shock must go down 20-25% and then it is ok for me. After that I start fiddling with the rabbit/tortoise thingy at the bottom. Guess this does not help much but this is the way I do it. Uni 1 Link to comment Share on other sites More sharing options...
Vetseun Posted August 9, 2014 Share Busy prepping my bike for early tomorrow notice the shocks have come back from service on Friday too soft, I.e just leaning on the handle bars it bottoms out. Tried googling - there must be a formula - x kgs = X psi ?There should be a sticker on your shock. Guidlines for psi vs your body weight Edited August 9, 2014 by Vetseun Link to comment Share on other sites More sharing options...
floatfox Posted August 9, 2014 Share A good starting point as far as i know is to match it with your weight. If you weigh 80kg then Inflate to 80psi. Thats for the front. I have a fox ctd rear shock, in lock or climb mode activated you softly climb onto the bike and sit down. The rear shock should not move more than 20% of total travel. Link to comment Share on other sites More sharing options...
floatfox Posted August 9, 2014 Share The rabbit knob at the bottom is your rebound..it adjusts the fork to either come up slower or faster. Link to comment Share on other sites More sharing options...
Uni Posted August 9, 2014 Share Ok no stickers on the fork except for a cautionary thing. Hard tail bike, suntour air shock up front. I've set it for what feels sort of right, will just take the shock pump with tomorrow. Glad I checked it though. Thanks guys. Link to comment Share on other sites More sharing options...
floatfox Posted August 9, 2014 Share In that case follow sepia's instruction. Good luck. Link to comment Share on other sites More sharing options...
garrethk Posted August 9, 2014 Share Put a cable tie around one of the stanchions, just tight enough that it doesn't just slide up and down without being pushed. Push the cable tie down to the seal. Carefully get onto the bike without putting too much weight onto the fork, get off in the same way. Measure how far the cable tie has moved, should be about 20 to 25% of your forks travel. Link to comment Share on other sites More sharing options...
TheV Posted August 9, 2014 Share There should be a sticker on your shock. Guidlines for psi vs your body weight Stickers only on Rockshox. Real Forks, i.e Lefty or Fox don't come with stickers floatfox 1 Link to comment Share on other sites More sharing options...
arendoog Posted August 9, 2014 Share Good starting piont for Fox is your weight +10 psi front and double that for the rear Link to comment Share on other sites More sharing options...
Vetseun Posted August 10, 2014 Share   Stickers only on Rockshox. Real Forks, i.e Lefty or Fox don't come with stickers Strange that they havent thought of sometging so basic yet. BarHugger and Beast Tech 2 Link to comment Share on other sites More sharing options...
hyper7 Posted August 10, 2014 Share Busy prepping my bike for early tomorrow notice the shocks have come back from service on Friday too soft, I.e just leaning on the handle bars it bottoms out. -30 psi Tried googling - there must be a formula - x kgs = X psi ? http://www.lmgtfy.com/?q=fox+fork+pressure+setting http://www.ridefox.com/fox_tech_center/owners_manuals/013/Content/Intro/Correct_air_pressure_sag.html Link to comment Share on other sites More sharing options...
Wyatt Earp Posted August 10, 2014 Share That fork is an air assisted fork and can not bottom out.They run on very low pressures. Link to comment Share on other sites More sharing options...
droo Posted August 10, 2014 Share Strange that they havent thought of sometging so basic yet. That's because "recommended pressures" are a steaming pile.  Set pressure according to sag - 20% for short travel forks, 25 - 30% for longer travel as a guide, then see how much available travel is used during a decent ride and adjust so you bottom once or twice per ride. Anything else is guesswork. waveduke, TheV, garrethk and 1 other 4 Link to comment Share on other sites More sharing options...
Uni Posted August 10, 2014 Share I didn't get round to doing all the climb on, climb off cable tie tricks, but she retained the pressure today during a 30km not too bumpy ride so maybe it was just a once off weird thing. Tx those - will revert if we find out what happened for reference purposes. Link to comment Share on other sites More sharing options...
Vetseun Posted August 10, 2014 Share   That's because "recommended pressures" are a steaming pile.  Set pressure according to sag - 20% for short travel forks, 25 - 30% for longer travel as a guide, then see how much available travel is used during a decent ride and adjust so you bottom once or twice per ride. Anything else is guesswork.I am sure you have just helped the manufacturers out big time. Droo from good old RSA has just taught Sram that stickers in their shocks are a load of hogwash. Well done! Respect Edited August 10, 2014 by Vetseun Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now