**new** Fox DHX proto

[Eren]

dont know if any of you have seen this yet?

sicklines is filled with new juicy parts right now :biggrin:

http://www.sicklines.com/gallery/data/748/medium/2009_fox_dhx.jpg

http://www.sicklines.com/gallery/data/748/medium/2009_fox_dhx1.jpg

[dhmike]

looks good to me .

[Damo]

looks good to me .

How so?

[Rafael-DH]

the blue knobs looks like a high/low speed compression adjustment
i like it

[Kevin]

How so?

It says prototype so it has to be supersweet...

But I guess this means they cant get the DHX Air to work huh?

[cesar_rojo]

Doesn't look very nice to me...

Huge piston axle and the huge tank for the oil and air... I'm sure this will be worst with cavitation than the older one (or will be running higher min pressure on the tank) So will be a more progressive shock probably and less sensible.. But this are just my personal thoughts...

I think nothing can compare right now to twin tube tech... But... lets wait for first real opinions to come...


dont know if any of you have seen this yet?

sicklines is filled with new juicy parts right now :biggrin:

http://www.sicklines.com/gallery/data/748/medium/2009_fox_dhx.jpg

http://www.sicklines.com/gallery/data/748/medium/2009_fox_dhx1.jpg

[Bulldog]

Wow. Knobs. Cool.

I'll take one of those stickers for my shock though, just to throw people off...

[FCLinder]

Its about time they do something to change it up and make it better. I bet this is not the only Prototype you will see this year. In the early 2000's when Fox was testing what is now the DHX there were about 3 to 4 different Pototypes out there that all looked different. If they are smart it will have a H/L Adjs for both R and C.

[fred.r]

*Waits patiently for a specific unnamed friend of mine with ridiculously tight lips to step in and unload all his wisdom on us, now that the cat's 2 paws outta the bag.*

[SpasticJack]

:eek:It's a good thing the Sunday is done after 08, or we'd probably have another shock specific link to buy.

[tatankainlondon]

dont know if any of you have seen this yet?

sicklines is filled with new juicy parts right now :biggrin:

http://www.sicklines.com/gallery/data/748/medium/2009_fox_dhx.jpg

http://www.sicklines.com/gallery/data/748/medium/2009_fox_dhx1.jpg

Yeti 303

yeah :happydance:

[darex]

Yeti 303

yeah :happydance:

No way, sherlock! :clue:

[tatankainlondon]

No way, sherlock! :clue:

yes my dear Watson :biggrin:

[ronan]

the size of the reservoir is going to cause problems with some frames is it not?

looks nice though, burly

[General Lee]

the size of the reservoir is going to cause problems with some frames is it not?

looks nice though, burly

hence the reason it is a prototype :lighten:

[ridiculous]

I like the bike! I wonder if thats the best platform to test that shock on though.

[davetrump]

I like the bike! I wonder if thats the best platform to test that shock on though.

right, because that's the only bike one of those is mounted to...

this shock has been on top Fox factory rider's bikes for months now. i am suprised it took this long for people to notice. beaumont, all three atherton's and a host of other wc riders have been testing it all spring in europe and photos have been up on the internet for quite some time

[MrPlow]

I like the bike! I wonder if thats the best platform to test that shock on though.
Yeti has always been the testers for proto fox stuff, if you like their shocks so far then thats your question answered.

[norbar]

right, because that's the only bike one of those is mounted to...

this shock has been on top Fox factory rider's bikes for months now. i am suprised it took this long for people to notice. beaumont, all three atherton's and a host of other wc riders have been testing it all spring in europe and photos have been up on the internet for quite some time

Athertons even state it at their website for quite some time. They also have a Float proto for their 4x fullys.

If I'm not wrong nico had also some proto DHX in the 07 season. Not sure if it was it.

[Tomac_racer]

Its about time they do something to change it up and make it better. I bet this is not the only Prototype you will see this year. In the early 2000's when Fox was testing what is now the DHX there were about 3 to 4 different Pototypes out there that all looked different. If they are smart it will have a H/L Adjs for both R and C.

It is impossible to have a true high and low speed rebound adjuster. The Cane Creek Hi/Lo rebound is just a compression adjuster working on compression when the shaft extending (rebounding)

[Ian Collins]

How so?

standard moto style hi/lo speed compression clickers....the largest diameter shaft i've seen as of yet.....

LOOKS cool to me

also, that silver adjuster looks cool to me to, but that's because i already know what it does

[Ian Collins]

*Waits patiently for a specific unnamed friend of mine with ridiculously tight lips to step in and unload all his wisdom on us, now that the cat's 2 paws outta the bag.*

any day now........

[Udi]

It is impossible to have a true high and low speed rebound adjuster. The Cane Creek Hi/Lo rebound is just a compression adjuster working on compression when the shaft extending (rebounding)

That's what rebound damping is, genius - damping in the direction opposite to compression.

[bent^biker]

also, that silver adjuster looks cool to me to, but that's because i already know what it does

o rly? (somebody want to grab that owl pic for me?)

[Slater]

I like how you guys assume just because its a proto that it must be awesome.

When in fact most protos of parts suck and have problems, hence the many revisions.

And on top of all that its a DHX. Which is rapidly being sent to the bottom of the list of good shocks.

Oh and the piston being so big isn't necessarily a good thing. It creates more friction on the larger seal, and is just a bandaid to try and make a monotube shock perform better. It should not be stressed so there is no "stiffness" gained by having it bigger.

Oh and can't forget this:
http://www.azillionthings.com/lookytouchy/orly_owl.jpg

[Ian Collins]

I like how you guys assume just because its a proto that it must be awesome.

When in fact most protos of parts suck and have problems, hence the many revisions.

And on top of all that its a DHX. Which is rapidly being sent to the bottom of the list of good shocks.

Oh and the piston being so big isn't necessarily a good thing. It creates more friction on the larger seal, and is just a bandaid to try and make a monotube shock perform better. It should not be stressed so there is no "stiffness" gained by having it bigger.

Oh and can't forget this:
http://www.azillionthings.com/lookytouchy/orly_owl.jpg

first off regardless of what this damper is being labeled as, i can assure you it is NOT a DHX, and it's nothing like it.....so comparing it to one is retarded....its a total departure.....good job making assumptions based on the past......

also, re: larger piston......you're wrong

a larger piston means larger orifices for oil to pass through, meaning more control and adjustment available via shims...the oil will also break down less quickly because it isn't being forced through such small holes......

re: stiffness gained from a larger piston......

you're wrong again....the piston itself is not stressed by side to side load, but the glide ring around it(piston band?) is a larger one and will create more lateral stiffness....

oh yeah, i might add, i think you're way off track in saying that proto stuff "sucks and has problems"......one of the sickest forks i had ever ridden to this day was a prototype......

[MttyTee]

standard moto style hi/lo speed compression clickers....the largest diameter shaft i've seen as of yet.....

LOOKS cool to me

also, that silver adjuster looks cool to me to, but that's because i already know what it does
I'm not so sure that's a Hi-Lo adjuster. The knob looks similar to the old Boost Valve adjuster which was knurled and had holes in it to make it easier to turn under pressure. It would be cool if it adjusted the preload on the Boost Valve and had a separate bleed circuit.....kinda like a Hi-Lo adjuster, hmm.

[Ian Collins]

I'm not so sure that's a Hi-Lo adjuster. The knob looks similar to the old Boost Valve adjuster which was knurled and had holes in it to make it easier to turn under pressure. It would be cool if it adjusted the preload on the Boost Valve and had a separate bleed circuit.....kinda like a Hi-Lo adjuster, hmm.

hmmm....a mutual friend said it was hi/lo....but he's been wrong in the past....can't wait til all of this "stuff" unveils!

[Socket]

So what's the silver adjuster at the bottom?

[MtnbikeMike]

looks good to me .


Looks like it lost 50 grams. And will make any bike ride like a Sunday. :clue:

[MttyTee]

So what's the silver adjuster at the bottom?
Could be a volume adjuster or could just be a fancy air cap. I really don't know. I've heard bits and pieces of info but am just speculating like the rest.

[MorewoodKid]

It is impossible to have a true high and low speed rebound adjuster. The Cane Creek Hi/Lo rebound is just a compression adjuster working on compression when the shaft extending (rebounding)

In theory you are 100% correct as the force on the shock is consistent due to the linear nature of the spring [forgetting shock rates and spring curves for the time being], and thus the shaft speed can not change.

BUT what shock mfg's generally refer to when they claim high/ low speed rebound is the shaft displacement/ undisrupted flow of oil through the rebound circuitry. When the rebound circuitry is "overwhelmed" by a large flow of oil [long rebound stroke] this causes the oil to bypass the main circuitry and divert to a secondary circuit. By offering adjustments on these two circuits one is able to fine tune their "high/ low speed" rebound.

[ilfreerider]

cant upload for some reason :


http://www.pinkbike.com/photo/1884362/

http://www.pinkbike.com/photo/1884358/

[Socket]

In theory you are 100% correct as the force on the shock is consistent due to the linear nature of the spring [forgetting shock rates and spring curves for the time being], and thus the shaft speed can not change.

BUT what shock mfg's generally refer to when they claim high/ low speed rebound is the shaft displacement/ undisrupted flow of oil through the rebound circuitry. When the rebound circuitry is "overwhelmed" by a large flow of oil [long rebound stroke] this causes the oil to bypass the main circuitry and divert to a secondary circuit. By offering adjustments on these two circuits one is able to fine tune their "high/ low speed" rebound.

No, that's pretty well all wrong. The force on the shock is NOT consistent, it is linearly decreasing through the rebound stroke (moving from bottom out to top out). All hydrodynamic dampers are speed sensitive, however because the maximum speed the shock can return at is dictated by its position in the stroke (it will always reach maximum speed somewhere close to bottom out, heavier rebound damping means this speed will be reached closer and closer to bottom out), it can be somewhat legitimate to call the high and low speed rebound adjusters start and end stroke rebound adjusters. Oil displacement has nothing to do with any rebound circuits on any shock (unless they use a control valve a la SPV, DHX etc in rebound, which none do).

[Damo]

Here y'go:

Gee Atherton's Commencal, Maxxis Cup, Gouveia 2008.

http://i1.pinkbike.com/photo/1884/pbpic1884362.jpg

And Dan's:

http://i4.pinkbike.com/photo/1884/pbpic1884358.jpg

Note his front tyre.

[Damo]

Athertons testing heavily by the looks of this:

http://i2.pinkbike.com/photo/1819/pbpic1819313.jpg

[norbar]

I'd kill to get one of their bikes (minus the rims maybe)

[JohnnyC]

first off regardless of what this damper is being labeled as, i can assure you it is NOT a DHX, and it's nothing like it.....so comparing it to one is retarded....its a total departure.....good job making assumptions based on the past......

also, re: larger piston......you're wrong

a larger piston means larger orifices for oil to pass through, meaning more control and adjustment available via shims...the oil will also break down less quickly because it isn't being forced through such small holes......

re: stiffness gained from a larger piston......

you're wrong again....the piston itself is not stressed by side to side load, but the glide ring around it(piston band?) is a larger one and will create more lateral stiffness....

oh yeah, i might add, i think you're way off track in saying that proto stuff "sucks and has problems"......one of the sickest forks i had ever ridden to this day was a prototype......


He's talking about the shaft diameter, fox made it bigger to displace more oil through the adjusters. More oil through the adjusters makes the adjusters have a greater effect, making it easier for riders to tune the shock to different bikes.

I agree that it does seem like a bit of a band-aid fix, a twin tube shock like the double barrel would be better for for tuning one shock to different bikes, as the lower reservoir pressures and smaller shaft would create much less friction inside the shock.

[cesar_rojo]

Wow, telemetry on the bike...


Athertons testing heavily by the looks of this:

http://i2.pinkbike.com/photo/1819/pbpic1819313.jpg

[mredrock]

Sort of looks like x-fusion http://www.x-fusion-shox.com/vector_dh2.html

[ArthurDH]

yeah, they both have a piston, a reservoir and a spring, winn0r!

[MttyTee]

He's talking about the shaft diameter, fox made it bigger to displace more oil through the adjusters. More oil through the adjusters makes the adjusters have a greater effect, making it easier for riders to tune the shock to different bikes.

I agree that it does seem like a bit of a band-aid fix, a twin tube shock like the double barrel would be better for for tuning one shock to different bikes, as the lower reservoir pressures and smaller shaft would create much less friction inside the shock.

The small increase in surface area amounts to just about nothing when your talking about friction. Especially when you take into account the leverage ratio. There is a minor increase in stiffness, not so much from the increased surface area but from the increased cross section off the shaft, mainly when the shock is fully extended. As stated the big benefit is moving more oil across the adjusters, making them more affective.

I wouldn't call it a band aid fix, it been used as a tuning feature in MX for a few years now, and twin tube technology is not a perfect benchmark to compare all to.

[General Lee]

The small increase in surface area amounts to just about nothing when your talking about friction. Especially when you take into account the leverage ratio. There is a minor increase in stiffness, not so much from the increased surface area but from the increased cross section off the shaft, mainly when the shock is fully extended. As stated the big benefit is moving more oil across the adjusters, making them more affective.

I wouldn't call it a band aid fix, it been used as a tuning feature in MX for a few years now, and twin tube technology is not a perfect benchmark to compare all to.

there you go again confusing all the ridemonkey suspension experts with actual facts. don't you know it is physically impossible to make a shock equal to or better than the cane creek double barrel? people on here have been to the factory and they've seen the dyno results you know.