[reo-fahrer]

besides the news that EXT works on an air shock, the german guys from Chickadeehill presented their air shock with a floating piston twin airchamber design:

http://instagr.am/p/CYpInC0tKv3/
screenshot of the insta post:

seems like sort of a ring piston inbetween the two airsleeves, the valve at the eyelet pressurizes the main chamber, the 2. valve at the sealhead the IRT chamber.

 

[HollyBoni]

They went from an air spring "addon" to making a rear shock? That's badass!

 

[reo-fahrer]

their first prototype of an IRT was for a RS Totem in 2012

Rock Shox Totem Review - Teil 2

ah ok weil im text steht high speed zugstufe;). deshalb habe ich mich etwas gewundert. ohne floodgate kann man die standart beshimung der hsc meiner meinung nach total vergessen. ich habe ein anderes verbaut. sowohl in hsc als auch in hsr(die war mir etwas zu langsam). die gabel rauscht mit...

www.mtb-news.de

 

[TylerVernon]

Awesome! This is really going to impress my friends.

 

[romphaia]

Interesting that they decided to go production with this.
Personally, I've also experimented this and in the end I think it's not worth it, for a rear shock.

http://instagr.am/p/B31N4DyjeVF/

On forks, the two-stage positive chamber was a good way to significantly mitigate the effects of the undersized negative air chamber. At least, before better options started showing up.
But on rear shocks, once the suspension linkage is tuned to obtain, in combination with the shock's characteristics, a linear-to-progressive force curve, there's no point. The initial portion of travel can't get more supple, and I thought the extra mid-stroke support had benefits in some instances but was a problem on the steeps.

Different situation for forks. Even with a proper linear-to progressive air spring, I find the extra mid-stroke support of a dual stage positive chamber is a significant improvement without downsides.

 

[bansaiman]

Interesting that they decided to go production with this.
Personally, I've also experimented this and in the end I think it's not worth it, for a rear shock.

http://instagr.am/p/B31N4DyjeVF/ View attachment 1965531

On forks, the two-stage positive chamber was a good way to significantly mitigate the effects of the undersized negative air chamber. At least, before better options started showing up.
But on rear shocks, once the suspension linkage is tuned to obtain, in combination with the shock's characteristics, a linear-to-progressive force curve, there's no point. The initial portion of travel can't get more supple, and I thought the extra mid-stroke support had benefits in some instances but was a problem on the steeps.

View attachment 1965532

Different situation for forks. Even with a proper linear-to progressive air spring, I find the extra mid-stroke support of a dual stage positive chamber is a significant improvement without downsides.

Yes,No Matter what slight difference between Solo and Double positive Air Chambers a Graph Shows. In real world you can experience a very noticeable difference in Ride Feel.besides you can tune IT to your likings while you are Stuck With one curve at an solo Air Setup.