REVIEWS DEALS BIKESHOPS TRAILS

Attaining a "stable platform" with a regular air shock

764 Views 8 Replies 6 Participants Last post by frank daleview, Jul 15, 2004

RARES

Discussion Starter · Jul 12, 2004

I ride ( a year and half now ) a 03 Heckler with a fine durable Fox Float AVA RL. The shock is great but is not a stable platform. Not much bob but when the shock is unlocked the pedaling IS kind of "mushy".

Other than changing to a fifth coil here are my other thoughts:

Been thinking lately if it's possible to ride the Fox shock with no sag and attaining the stable platform effect. The fox AVA progressiveness can be controlled by the size of the air chamber. Creating a linear feel by increasing the air volume can compensate for the high air pressure made to avoid sag.

Is this fiction?? Has anyone tried this, thought of it??
What other consequences am I missing out here??

Though I I'll first get wiser here before trying this out.

All tips thoughts and theory are welcome,

Rares

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Hecubus

· #2 · Jul 12, 2004

www.pushindustries.com The only way to get stable platform out of a normal fox shock.

Some bikes are designed around a zero sag setup (Giant NRS) but they are harsher than other FS bikes. Sag is required for just about every other suspension design to run properly. The AVA volume control will change the ramp up of the shock as it sinks deeper into the end of its stroke. If you overinflate the shock to eliminate sag it won't matter what the AVA is set to because you will never even be getting past the initial part of its stroke.

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Jm.

· #3 · Jul 12, 2004

RARES said:
Is this fiction?? Has anyone tried this, thought of it??
What other consequences am I missing out here??

Rares

Yes, it's fiction, all you are able to do if you run it like that is run it over-sprung. Yes you can make it more linear, but it's still oversprung and because of that, it'll ride like crap.

The only way to make it pedal better with a "stable" platform is to add low-speed compression damping with some sort of blowoff. This is essentially how the romic, fox propedal, pushed shock, and 5th element work, although some of them use somewhat different means to acheive this.

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DeeEight

· #4 · Jul 12, 2004

well with some dual-chamber air shocks, where the negative spring pressure is adjusted seperately, you can run it with zero pressure in the negative spring (Sid XC rear shocks for example) and it'll take a bit more initial load to get the shock moving, without changing the pressure in the main chamber, but it really depends on what sort of leverage ratio the shock has to deal with for the frame and the suspension design.

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RARES

Discussion Starter · #5 · Jul 12, 2004

Hecubus said:
www.pushindustries.com The only way to get stable platform out of a normal fox shock.

Some bikes are designed around a zero sag setup (Giant NRS) but they are harsher than other FS bikes. Sag is required for just about every other suspension design to run properly. The AVA volume control will change the ramp up of the shock as it sinks deeper into the end of its stroke. If you overinflate the shock to eliminate sag it won't matter what the AVA is set to because you will never even be getting past the initial part of its stroke.[/QUOTE

Can the kit be insalled "at home" or does is shock beeing treated up at Pushindustries?

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RARES

Discussion Starter · #6 · Jul 12, 2004

Oops - Let me rephrase that :

Can the kit be installed "at home" or does the shock need to be treated up at Pushindustries?

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bmateo

· #7 · Jul 12, 2004

you have to send it to Push for revalving.... Look on the shock forum, I think you'll find overwhealming evidence that they are great CS and very responsive with quick turnaround.

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