MTB Tech Rumors and Innovation

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Shreddy
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8/14/2023 10:23am
Rose Bikes is making a giveaway of theire new DH bike bike that will be realeased in some days, but has any one Seen a picture...

Rose Bikes is making a giveaway of theire new DH bike bike that will be realeased in some days, but has any one Seen a picture of it?

367748721 689519356425086 7163509478121253512 n.jpg?VersionId=lak

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bizutch
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8/14/2023 12:38pm
Rose Bikes is making a giveaway of theire new DH bike bike that will be realeased in some days, but has any one Seen a picture...

Rose Bikes is making a giveaway of theire new DH bike bike that will be realeased in some days, but has any one Seen a picture of it?

Shreddy wrote:

367748721 689519356425086 7163509478121253512 n.jpg?VersionId=lak

Is this a trap?
Or...a Thirst Trap?

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Yoda
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8/14/2023 2:00pm

F7D6D154-68F0-4F6D-88C7-7BB680938DC3Adrien Dailly on the Lapierre dh proto same kind of single pivot with a lower linkage.

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shreda
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8/14/2023 2:06pm
Yoda wrote:
Adrien Dailly on the Lapierre dh proto same kind of single pivot with a lower linkage.

F7D6D154-68F0-4F6D-88C7-7BB680938DC3Adrien Dailly on the Lapierre dh proto same kind of single pivot with a lower linkage.

Sure it‘s not just an Antidote Darkmatter? 

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Yoda
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8/14/2023 3:06pm

He owns a Darkmatter he races DH with. 

Sorry false alert.

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8/15/2023 9:33am
While Loic and Finn's bikes are indeed oddly glued to the ground, to say that Fox and RS can only offer clicky adjustments is just not...

While Loic and Finn's bikes are indeed oddly glued to the ground, to say that Fox and RS can only offer clicky adjustments is just not true.  Fox offers multiple tune options on rear shocks to athletes and custom ones to the top athletes (most notably Greg). RS does the same.

ERGue wrote:
My hunch is that Ohlins has taken more of a motocross approach to tuning the suspension, and have set aside resources to develop tunes/setups for Specialized’s...

My hunch is that Ohlins has taken more of a motocross approach to tuning the suspension, and have set aside resources to develop tunes/setups for Specialized’s riders and bikes. The impression I get for Fox and RS is that the sponsored teams are provided with a selection of their available stock tunes and maybe a weekend of testing with someone like Jordi. Let’s say the stock tunes don’t suite their needs, then of course they will try and come up with something better, especially for a team/rider on the pointy end of the results, however the resources to do it properly, probably are not there. I know a lot of speculation here but like I said just a hunch. 

Yes but lots of “pro” who ride ohlins cannot get it set up right and complain constantly.  I wonder why this is 

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noodlenosteeze
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8/15/2023 9:46am Edited Date/Time 8/15/2023 10:13am

Bit late to the party on this one - the Vivid air is pretty sweet. It won't blow up on you after 2 weeks like the previous version Vivid, or the current gen Float X2 does. Smile

Primoz
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8/15/2023 10:10am
From the other site, right on time:

From the other site, right on time:

Screenshot 20230815 093354 Chrome

What happens when the lubricating oil passes from the damper side into the air spring? And do the wiper seals hold the pressures involved in air springs? And/or how much friction that creates on the wiper seals?

But yeah, not a bad way to increase the volume Smile

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Primoz
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8/15/2023 10:13am
Bit late to the party on this one - the Vivid air is pretty sweet. It won't blow up on you after 2 weeks like the...

Bit late to the party on this one - the Vivid air is pretty sweet. It won't blow up on you after 2 weeks like the previous version Vivid, or the current gen Float X2 does. Smile

For someone making these kinds of claims this is not enough information on the topic. We need more. Tongue

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noodlenosteeze
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8/15/2023 10:16am
Bit late to the party on this one - the Vivid air is pretty sweet. It won't blow up on you after 2 weeks like the...

Bit late to the party on this one - the Vivid air is pretty sweet. It won't blow up on you after 2 weeks like the previous version Vivid, or the current gen Float X2 does. Smile

Primoz wrote:

For someone making these kinds of claims this is not enough information on the topic. We need more. Tongue

Unfortunately that's about as much as I can say. You'll know more soon.

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TEAMROBOT
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8/15/2023 10:35am
From the other site, right on time:

From the other site, right on time:

Screenshot 20230815 093354 Chrome

Primoz wrote:
What happens when the lubricating oil passes from the damper side into the air spring? And do the wiper seals hold the pressures involved in air...

What happens when the lubricating oil passes from the damper side into the air spring? And do the wiper seals hold the pressures involved in air springs? And/or how much friction that creates on the wiper seals?

But yeah, not a bad way to increase the volume Smile

My first thought when I saw this post was that Fox should probably sort out their non-hollow normal crowns before they start casting cavities and holes in them.

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Primoz
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8/15/2023 10:45am
From the other site, right on time:

From the other site, right on time:

Screenshot 20230815 093354 Chrome

Primoz wrote:
What happens when the lubricating oil passes from the damper side into the air spring? And do the wiper seals hold the pressures involved in air...

What happens when the lubricating oil passes from the damper side into the air spring? And do the wiper seals hold the pressures involved in air springs? And/or how much friction that creates on the wiper seals?

But yeah, not a bad way to increase the volume Smile

TEAMROBOT wrote:
My first thought when I saw this post was that Fox should probably sort out their non-hollow normal crowns before they start casting cavities and holes...

My first thought when I saw this post was that Fox should probably sort out their non-hollow normal crowns before they start casting cavities and holes in them.

Pretty sure most crowns are forged and hollow already... Making this work would just require the lowers and the steerer tube to be sealed and glued to the crown to hell and back. Any movement, wear or oxidisation could cause a main chamber leakage. Not unlike what happens with Rock Shox SID carbon crowns to be honest... I think one was put back into action through liberal application of Loctite 243 (blue kind) to seal the cracked threads for the top cap (the fastest and easiest way to try something when I was asked if anything can be done to make it work).

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kcy4130
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8/16/2023 4:33am

Maybe it's just the skinny tire playing tricks on my eyes, but that last one looks like it might have 34mm stanchions. All the other photos look like a 32. Perhaps two new fox xc forks in the works? Having a super light 32 and slightly burlier but still xc 34 makes some sense. To compete with sid sl and the 35mm sid. 

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louiesquared
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8/16/2023 5:58am
kcy4130 wrote:
Maybe it's just the skinny tire playing tricks on my eyes, but that last one looks like it might have 34mm stanchions. All the other photos...

Maybe it's just the skinny tire playing tricks on my eyes, but that last one looks like it might have 34mm stanchions. All the other photos look like a 32. Perhaps two new fox xc forks in the works? Having a super light 32 and slightly burlier but still xc 34 makes some sense. To compete with sid sl and the 35mm sid. 

Fox already offers the Step Cast in 32 and 34 so I wouldn't be surprised if that continues on with the new forks.

dolface
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8/16/2023 6:28am
kcy4130 wrote:
Maybe it's just the skinny tire playing tricks on my eyes, but that last one looks like it might have 34mm stanchions. All the other photos...

Maybe it's just the skinny tire playing tricks on my eyes, but that last one looks like it might have 34mm stanchions. All the other photos look like a 32. Perhaps two new fox xc forks in the works? Having a super light 32 and slightly burlier but still xc 34 makes some sense. To compete with sid sl and the 35mm sid. 

Looks like a 34 to me too fwiw. It also doesn't have the see-through/skeltonized arch we've seen in some of the other pics..

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kcy4130
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8/16/2023 6:56am Edited Date/Time 8/16/2023 7:05am
dolface wrote:

Looks like a 34 to me too fwiw. It also doesn't have the see-through/skeltonized arch we've seen in some of the other pics..

The skeltonized part might just be behind the front part of the arch in the last photo. It looks to be like that on the other photos. But idk, just guessing? It'll be interesting to see if the 36/38/40 get the same treatment. 

Edit: It's also pretty interesting how they shaved the center knobs off of that tire for faster rolling. 

haen
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8/16/2023 8:19am

It's pretty cool that Fox appears to be using generative design to save weight on the arch and crown. If you're not familiar with generative design, here's a definition from Autodesk:

Generative design is a design exploration process. Designers or engineers input design goals into the generative design software, along with parameters such as performance or spatial requirements, materials, manufacturing methods, and cost constraints. The software explores all the possible permutations of a solution, quickly generating design alternatives. It tests and learns from each iteration what works and what doesn’t. 

generative-design-for-additive-sb-640x360 tcm27-57555.jpg?VersionId=AO1V71CuE6LwIL.9iLI28SNdBXxA

More info:https://www.autodesk.com/solutions/generative-design

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RBalicious
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8/16/2023 9:50am
From the other site, right on time:

From the other site, right on time:

Screenshot 20230815 093354 Chrome

Primoz wrote:
What happens when the lubricating oil passes from the damper side into the air spring? And do the wiper seals hold the pressures involved in air...

What happens when the lubricating oil passes from the damper side into the air spring? And do the wiper seals hold the pressures involved in air springs? And/or how much friction that creates on the wiper seals?

But yeah, not a bad way to increase the volume Smile

Wiper seals are meant to keep dirt/grime OUT. Not air in, that is what the seals on the air spring side do. Yes, air can/will get trapped in the lowers. This design should not have an impact on how air could potentially pass from the uppers into the crown if in the event of this hollow crown being developed. AND it would be highly unlikely the design would allow damper oil to pass to the air side (I could be wrong), patents are typically drawn up in a way that could show the options/possibilities to cover full breadth of designs for patenting purposes.

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Primoz
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8/16/2023 12:42pm

Using the crown as a connection could potentially make it possible to use the damper side lowers as a spring as well. In that case the wipers would have to hold the pressure. Unlikely, but the catch is that sealing the stanchion into the crown (and sealing the crown-steerer interface) would be a bit of a challenge, that's why I imagined a connection all the way across could be made. Thus also the lubricating oil.

Searching for how Fox made the 38 spring (they use a cartridge instead of relying on the stanchions as the spring housing) I came across Luft Fusion, which I think makes a lot of sense - a chamber within a chamber layout adding another tube for the piston to seal against with the tube sealing against the stanchion and creating an outer sleeve. The change in volume can easily be tuned to achieve the desired compression ratios both on the positive and negative side, the smaller diameter of the piston requires a bit higher pressure, there is some more weight in the system, but overall it might just work with the likes of a 180 mm Zeb and the progressiveness it's experiencing.

https://www.ebay.com/itm/124593036229

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RBalicious
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8/16/2023 2:09pm
Primoz wrote:
Using the crown as a connection could potentially make it possible to use the damper side lowers as a spring as well. In that case the...

Using the crown as a connection could potentially make it possible to use the damper side lowers as a spring as well. In that case the wipers would have to hold the pressure. Unlikely, but the catch is that sealing the stanchion into the crown (and sealing the crown-steerer interface) would be a bit of a challenge, that's why I imagined a connection all the way across could be made. Thus also the lubricating oil.

Searching for how Fox made the 38 spring (they use a cartridge instead of relying on the stanchions as the spring housing) I came across Luft Fusion, which I think makes a lot of sense - a chamber within a chamber layout adding another tube for the piston to seal against with the tube sealing against the stanchion and creating an outer sleeve. The change in volume can easily be tuned to achieve the desired compression ratios both on the positive and negative side, the smaller diameter of the piston requires a bit higher pressure, there is some more weight in the system, but overall it might just work with the likes of a 180 mm Zeb and the progressiveness it's experiencing.

https://www.ebay.com/itm/124593036229

Had a feeling you were going to bring this up. If I recall correctly, the primary reason for the tube within a tube design for the air spring had more to do with spring rates than anything else... Again, I could be wrong, but that is what I recall learning about that system.

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RBalicious
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8/16/2023 2:46pm
Primoz wrote:
Using the crown as a connection could potentially make it possible to use the damper side lowers as a spring as well. In that case the...

Using the crown as a connection could potentially make it possible to use the damper side lowers as a spring as well. In that case the wipers would have to hold the pressure. Unlikely, but the catch is that sealing the stanchion into the crown (and sealing the crown-steerer interface) would be a bit of a challenge, that's why I imagined a connection all the way across could be made. Thus also the lubricating oil.

Searching for how Fox made the 38 spring (they use a cartridge instead of relying on the stanchions as the spring housing) I came across Luft Fusion, which I think makes a lot of sense - a chamber within a chamber layout adding another tube for the piston to seal against with the tube sealing against the stanchion and creating an outer sleeve. The change in volume can easily be tuned to achieve the desired compression ratios both on the positive and negative side, the smaller diameter of the piston requires a bit higher pressure, there is some more weight in the system, but overall it might just work with the likes of a 180 mm Zeb and the progressiveness it's experiencing.

https://www.ebay.com/itm/124593036229

Also, that graphic doesn't make much sense. Doesn't seem feasible for the air chamber above the air spring piston (typically the +) to be a both negative above and below the air spring piston. Something is a bit out of whack there, but I am not an engineer either so...?

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Aksel_Lfft
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8/16/2023 3:53pm
Kapolczer wrote:
Assuming this will be the new vivid air shock??

Assuming this will be the new vivid air shock??IMG 6771

Yeah saw the story from RS with the rethorical question: "What impressed Jesse Melamed ?" So I guess it's coming out soon. Smile

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