Posting it here because it seems pretty closely related. Has anyone done an air conversion on a Fox 40? I'm starting with a 2016 performance series that's been updated with the RC2 damper. Question is about whether or not I need to replace the coil/air side stanchion. The Fox tech seemed to suggest it due to potential wear from the spring as well as the replacement stanchion having "dimples" for some reason.
(Yes, I know that the air spring is arguably a performance downgrade but at this point I'm tired enough of battling the spring rattle to give it a try).
Posting it here because it seems pretty closely related. Has anyone done an air conversion on a Fox 40? I'm starting with a 2016 performance series that's been updated with the RC2 damper. Question is about whether or not I need to replace the coil/air side stanchion. The Fox tech seemed to suggest it due to potential wear from the spring as well as the replacement stanchion having "dimples" for some reason.
(Yes, I know that the air spring is arguably a performance downgrade but at this point I'm tired enough of battling the spring rattle to give it a try).
Hi, yes you must replace the stanchion, because the dimples in the new one pressurises the negative air spring, without the dimples it will work, but the fork will be too hard to compress.
Hi, yes you must replace the stanchion, because the dimples in the new one pressurises the negative air spring, without the dimples it will work, but the fork will be too hard to compress.
Posting it here because it seems pretty closely related. Has anyone done an air conversion on a Fox 40? I'm starting with a 2016 performance series that's been updated with the RC2 damper. Question is about whether or not I need to replace the coil/air side stanchion. The Fox tech seemed to suggest it due to potential wear from the spring as well as the replacement stanchion having "dimples" for some reason.
(Yes, I know that the air spring is arguably a performance downgrade but at this point I'm tired enough of battling the spring rattle to give it a try).
I tried a longer piece of shrinkwrap as well as a plastic cap on the top of the spring to keep it centered. Might have been some improvement but it's never been truly quiet and usually over the course of a day of riding it gets worse. Definitely open to alternate suggestions. Setup on the vorsprung soring conversion looks pretty slick.
Posting it here because it seems pretty closely related. Has anyone done an air conversion on a Fox 40? I'm starting with a 2016 performance series that's been updated with the RC2 damper. Question is about whether or not I need to replace the coil/air side stanchion. The Fox tech seemed to suggest it due to potential wear from the spring as well as the replacement stanchion having "dimples" for some reason.
(Yes, I know that the air spring is arguably a performance downgrade but at this point I'm tired enough of battling the spring rattle to give it a try).
The original spring stanchion won't work simply because the spring would scratch the inner surface, preventing the seals from doing their work properly.
The original spring stanchion won't work simply because the spring would scratch the inner surface, preventing the seals from doing their work properly.
On the plus side, if there's a good gouge where the piston sits at topout, it might serve the function of the negative chamber equalization dimple okay.
On the plus side, if there's a good gouge where the piston sits at topout, it might serve the function of the negative chamber equalization dimple okay.
Yup, might suck. Willing to try it and will keep the coil setup in case I hate it. Will also try a longer heat shrink tube. Any suggested variety/heat shrink material?
The trick for switching new forks back and forth is..
Swap stanchion sides,
Take an air fork, throw a coil in it, if you need to go back to air from some reason, switch the coil fubared stanchion to the damper side, use the damper side stanchion for the air piston.
Ps, if you did have a non butted tube without a dimple perhaps a mrp fulfill system could be employed for an adjustable negative spring
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