i run this fork with so much preload i couldnt compress it .
i took them out and pumped it back up to the PSI i had in it with the coils . its a little liter and feels just like it did with coils STIFF !
iv done a few searches about it but nothing to answer my question , maybe one of you had heard or done the same .?
why are the coils in there again ? if im going to run it so stiff do i need the coils ?


- 110mm lowered to 80mm
- Open Bath SSV damping
- Dual coil springs
- Mg FR monolite one piece arch & sliders
- Forged FR crown w/cryofit "M" design
- Single external rebound adjuster
- External air preload
- 32 mm steel stanchions
- 20 mm QR 20 Pro drop-outs

I did a similar thing with my Old boxxer that I had converted to air assist. I only had to add a few psi's extra to get it ride able. WHen I ran it w/o coils it didn't have any damping, so it was WAY springy and bouncy. If your fork has rebound damping that still works w/o the coils, it might not be too bad. (I'd bring the coils to Ray's in a toolbox just in case)

Oh , iam .

I didn't doubt that.

While I don't know for sure, my guess is that coils are air are used together for a couple reasons:

1) Allows tuning of the overall spring force-displacement curve

- coil springs are linear, this helps fork stay "up" in the travel, but poor bottoming resistance (neglecting effects of the damper, of course, which is a whole other discussion)

-air springs are exponential - the spring RATE actually increases as you compress them, where a coil the rate stays constant. some air suspension you hear about how it tends to sag down in the travel, but has good bottoming characteristics.

Using blend of Air & Coil allows coil to give smooth plush initial travel while maintaining ride height, while air provides good ramp as the fork gets deeper into the travel.

2) Seals - if you are using a coil helper, it might let you run lower air pressures in the shock overall, and therefore you might get away with air seals that are less "tight" without leaking. Looser seals are good for reducing stiction, and again the combo of looser seals and coil helper lets you have good small bump sensitivity while maintaining ride height.

Since you've got it pumped up so hard, the air shock is overwhelming the coil basically throughout the travel, so you don;t notice much difference. If someone (like me for example) was running the fork setup for trail instead of DJ and had air pressure settings more in the middle of the intended range, you would probably notice more of a difference in response.

That is all I got.