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Fox dhx air 5.0 stroke

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Fox dhx air 5.0 stroke

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flag keystonebikes
Posted: Nov 26, 2014 at 14:19 Quote
i have a fox dhx air 5.0 7.875 x 2.25 that seems to bottom out around 2" instead of going all the way to 2.25". air spring is around 170psi, and ive tried it with propedal full out, bottom out resistor full out, and boost valve set at 125 psi (the minimum) and it still wont go all the way through the stroke. and no its not my frame bottoming out either. any ideas?
flag Chuvak
Posted: Nov 26, 2014 at 17:28 Quote
release al the pressure from the spring. make 130PSI piggyback pressure. try to compress the shock to all the shaft travel. post here what happens
flag keystonebikes
Posted: Nov 27, 2014 at 8:45 Quote
took all air pressure out of can and went to 75 psi in boost valve, which is actually the minimum, not 125. with all air out, it stops with about 1/4" of stroke to go. I can hear and feel the shock bottom out. maybe that is the way they are? this is my first dhx air, and it might just be my last lol. other fox air shocks I have had, when I bottom them out, I blow the o ring clear off the shaft. this one stops 1/4" too soon imo.
flag Chuvak
Posted: Nov 28, 2014 at 6:53 Quote
that tells about wrong IFP piston setting. in your shock it must be 33mm. obviously you have less. turn your bottom-out adjuster all the way counter-clockwise and repeat that test. if result does not change, it is 99% wrong IFP depth.

it is very simple to fix (here are photos for coil version, but for air one it is all the same):
1) remove shock from the bike and release all the air from piggyback and air spring.
2) release 2 screws and remove blue bottom-out cap
Unsecure image, only https images allowed: http://biketrip.spb.ru/wp-content/uploads/fox-4.jpg3) unscrew piggyback cap
Unsecure image, only https images allowed: http://biketrip.spb.ru/wp-content/uploads/fox-8.jpg4) measure IFP depth. it must be 33mm.
5) if not, unscrew the screw in the IFP piston and gently push it to the 33mm depth.
6) place IFP screw back, tighten it a bit ans assemble all the stuff back. pump your piggyback to 100-120PSI and check it again
flag nordland071285
Posted: Dec 3, 2014 at 8:43 Quote
Legendary reply as always Chuvak, you really know your stuff Smile
flag keystonebikes
Posted: Dec 3, 2014 at 8:47 Quote
yes thanks chuvak, im gonna try this when i get a chance. the holidays are keeping me busy. so it is agreed that my shock stoke should go all the way to the end of the shaft? not a 1/4" before the end?
flag Chuvak
Posted: Dec 3, 2014 at 18:22 Quote
nordland071285 wrote:
Legendary reply as always Chuvak, you really know your stuff Smile
thanks mate, very pleased to hear that Rolleyes

keystonebikes wrote:
yes thanks chuvak, im gonna try this when i get a chance. the holidays are keeping me busy. so it is agreed that my shock stoke should go all the way to the end of the shaft? not a 1/4" before the end?
I am very sorry. when I read 1/4", I thought about 25mm. can't get used to imperial system of measurement. yes, when 1/4" (6mm) is left, that's OK, have no worries, your shock is operating well.

here is a proof picture of my girl's shock (200mm eye-to-eye length, just as yours). you can't see on photo, but slide calliper shows 6.5mm.
Unsecure image, only https images allowed: http://s7.hostingkartinok.com/uploads/images/2014/12/1d88c8bf8c8d6bc7c9ba17b4105f41cf.jpg
flag keystonebikes
Posted: Dec 4, 2014 at 9:03 Quote
wow thanks for posting that before i ripped into my shock! ok so my shock is normal then? i wonder why all my other fox shocks will blow the o ring off then? tecnically it only has 2" of stoke if it doesnt blow the ring off imo. thanks again for all your help.
flag Chuvak
Posted: Dec 4, 2014 at 16:44 Quote
it's fine. my girl had float RP23 once. and yes, it's O-ring was blowing off. DHX doesn't.
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