MTB Tech Rumors and Innovation

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Sesame Seed
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3/29/2023 2:42am
Sir HC wrote:
Mr.Nally wrote:

Do you think they are simple tube "counter weights"? Would certainly take a few runs to get used to the technology.

 

Why are quotes generated around counter weights?  Do I now need to go to the other, other-site to obtain cavalier use of AI?

h8eUL.gif?VersionId=P3qK9OQDGuYsXOt

 

3/29/2023 5:30am

Formula is teasing new product launch on Friday. Is this the elusive Selva XL dual crown enduro fork? If so, I am tempted - very tempted.

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Losifer
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3/29/2023 7:11am
baronKanon wrote:

Formula is teasing new product launch on Friday. Is this the elusive Selva XL dual crown enduro fork? If so, I am tempted - very tempted.

Oh… I certainly hope so. Dual crowns just make an awful lot of sense for >160mm forks.

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jonkranked
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3/29/2023 8:16am

speaking of product that's yet to materialize on sale for the public..... anybody know what's going on with the box stealth hubs?

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hardbash
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3/29/2023 9:00am

Read in the pinkbike comments that the new SRAM Maven brakes will be mineral oil. Interesting

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Primoz
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3/29/2023 10:14am Edited Date/Time 3/29/2023 10:19am

Doubt it. The block is unsprung on the rear but sprung on the front. It would also have to be a tuned mass damper to achieve this functionality and I think a tuned mass damper might be quite heavy to do anything, depending on the frequencies that were intended to be filtered out.

To be completely honest, not thinking it through completely, I don't see much of a use for an interter-type unit on a mountainbike, except for pedalling performance. In F1 (and prototypes) Inerters were used to take off the spikes in forces in suspension to ensure as constant force as possible on the tyre patch as that gave the most grip. And I think one of the effects was it made the car seem much heavier to the suspension than it actually was, effectively improving the sprung/unsprung ratio.

For what it's worth, they were banned in the new 2022 set of rules: https://www.formula1.com/en/latest/article.tech-tuesday-how-2022s-suspe…

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The-Hoff
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3/29/2023 10:16am
jonkranked wrote:
Not a rumor or innovation per se but thought this was worth sharing (apologies if I missed it previously)  

Not a rumor or innovation per se but thought this was worth sharing (apologies if I missed it previously)

Screenshot 1 bd7a2ede-da8b-41e8-a683-14598ad4e691 1600x.png?VersionId=B

 

Kusa wrote:

Homage to Hayes DH Purple edition circa 25 years ago 🙃… damn I’m old lol.

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Primoz
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3/29/2023 10:22am
hardbash wrote:

Read in the pinkbike comments that the new SRAM Maven brakes will be mineral oil. Interesting

Considering it's being run on existing levers, kinda doubt this one. But if true, I guess it's time to stock up on current (old?) Codes Smile

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kcy4130
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3/29/2023 10:46am
Primoz wrote:

Considering it's being run on existing levers, kinda doubt this one. But if true, I guess it's time to stock up on current (old?) Codes Smile

Code levers could probably run mineral oil just fine. Worst case they'd have to change material of some of the rubber parts. So they could be mineral and look the same. 

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Losifer
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3/29/2023 10:49am
Primoz wrote:

Considering it's being run on existing levers, kinda doubt this one. But if true, I guess it's time to stock up on current (old?) Codes Smile

kcy4130 wrote:
Code levers could probably run mineral oil just fine. Worst case they'd have to change material of some of the rubber parts. So they could be...

Code levers could probably run mineral oil just fine. Worst case they'd have to change material of some of the rubber parts. So they could be mineral and look the same. 

The only issue would be the rubber- EPDM for DOT fluid, buna for mineral oil.

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Primoz
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3/29/2023 10:52am

But the reservoir membrane would require a new tool for it. That's why I find it kinda unlikely. It's not a problem as long as we're talking about O-rings, but when custom seals come into play it becomes a bit different. Not impossible, a new tool (to cover different molding characteristics of a different material) is a few grand at most and most prototypes cost more than that, but still...

I guess we'll find out sooner than later.

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louiesquared
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3/29/2023 11:11am
Primoz wrote:
But the reservoir membrane would require a new tool for it. That's why I find it kinda unlikely. It's not a problem as long as we're...

But the reservoir membrane would require a new tool for it. That's why I find it kinda unlikely. It's not a problem as long as we're talking about O-rings, but when custom seals come into play it becomes a bit different. Not impossible, a new tool (to cover different molding characteristics of a different material) is a few grand at most and most prototypes cost more than that, but still...

I guess we'll find out sooner than later.

They could be using the same internal soft parts as the DB8. The outer body is similar to the Code. 

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sethimus
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3/29/2023 12:56pm
hardbash wrote:

Read in the pinkbike comments that the new SRAM Maven brakes will be mineral oil. Interesting

told you so

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Uncle Cliffy
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3/29/2023 1:35pm Edited Date/Time 3/29/2023 2:26pm
DirtyHal wrote:
I don't think this has already been posted in here but this is some pretty cool tech: https://en.nicolai-bicycles.com/custom-bike-gt1-eboxx-3x3-miracle-topaz/ Personally I'm pretty excited about gearbox and belt...

I don't think this has already been posted in here but this is some pretty cool tech: https://en.nicolai-bicycles.com/custom-bike-gt1-eboxx-3x3-miracle-topaz/

Personally I'm pretty excited about gearbox and belt drives rather than expensive new chains and derailleurs. 

I looked it up. That hub weighs 2kilos! (4 1/2 pounds.) Holy unsprung weight Batman!

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DirtyHal
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3/29/2023 1:43pm

I looked it up. That hub weighs 2kilos! (4 1/2 pounds.) Holy unsprung weight Batman!

48% heavier than a Transmission setup using my napkin math.  Would you really notice on an ebike though?  If you go through a cassette per year with a transmission setup you would potentially be saving quite a few bucks annually with the no maintenance claim on the 3x3.

Uncle Cliffy
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3/29/2023 2:00pm Edited Date/Time 3/29/2023 2:25pm

I looked it up. That hub weighs 2kilos! (4 1/2 pounds.) Holy unsprung weight Batman!

DirtyHal wrote:
48% heavier than a Transmission setup using my napkin math.  Would you really notice on an ebike though?  If you go through a cassette per year...

48% heavier than a Transmission setup using my napkin math.  Would you really notice on an ebike though?  If you go through a cassette per year with a transmission setup you would potentially be saving quite a few bucks annually with the no maintenance claim on the 3x3.

If you’re talking about the overall weight of the bike? No.


Unsprung weight on the rear wheel? That’s an extra 2 pounds the rear shock has to contend with…

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lickmycrinkle
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3/29/2023 2:07pm
Primoz wrote:
But the reservoir membrane would require a new tool for it. That's why I find it kinda unlikely. It's not a problem as long as we're...

But the reservoir membrane would require a new tool for it. That's why I find it kinda unlikely. It's not a problem as long as we're talking about O-rings, but when custom seals come into play it becomes a bit different. Not impossible, a new tool (to cover different molding characteristics of a different material) is a few grand at most and most prototypes cost more than that, but still...

I guess we'll find out sooner than later.

They could be using the same internal soft parts as the DB8. The outer body is similar to the Code. 

Perhaps something was introduced in the stealth update that facilitates mineral oil/uses DB8 bladder?

Anyway, can't wait to quote all of the hyperbole back to them from that extremely expensive video about why DOT is best once they come out sporting the superior fluid.

3
3/29/2023 2:13pm
DirtyHal wrote:
I don't think this has already been posted in here but this is some pretty cool tech: https://en.nicolai-bicycles.com/custom-bike-gt1-eboxx-3x3-miracle-topaz/ Personally I'm pretty excited about gearbox and belt...

I don't think this has already been posted in here but this is some pretty cool tech: https://en.nicolai-bicycles.com/custom-bike-gt1-eboxx-3x3-miracle-topaz/

Personally I'm pretty excited about gearbox and belt drives rather than expensive new chains and derailleurs. 

I looked it up. That hub weighs 2kilos! (4 1/2 pounds.) Holy unsprung weight Batman!

Unsprung. The wheels are unsprung. 

2
Uncle Cliffy
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3/29/2023 2:26pm
DirtyHal wrote:
I don't think this has already been posted in here but this is some pretty cool tech: https://en.nicolai-bicycles.com/custom-bike-gt1-eboxx-3x3-miracle-topaz/ Personally I'm pretty excited about gearbox and belt...

I don't think this has already been posted in here but this is some pretty cool tech: https://en.nicolai-bicycles.com/custom-bike-gt1-eboxx-3x3-miracle-topaz/

Personally I'm pretty excited about gearbox and belt drives rather than expensive new chains and derailleurs. 

I looked it up. That hub weighs 2kilos! (4 1/2 pounds.) Holy unsprung weight Batman!

Unsprung. The wheels are unsprung. 

You talk what I’m knowin’ about… Tongue (fixed)

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wacko88
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3/29/2023 3:33pm

Any common sense with that front pulley under BB ,lasting time any bets get smashed and in firing line for water and mud prune be on the way for a Thule car rack too 

TannerVal
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3/29/2023 4:09pm
hardbash wrote:

Read in the pinkbike comments that the new SRAM Maven brakes will be mineral oil. Interesting

Primoz wrote:

Considering it's being run on existing levers, kinda doubt this one. But if true, I guess it's time to stock up on current (old?) Codes Smile

4D95EFA6-48C1-442F-89AC-B6F558ED8330.jpeg?VersionId=ESAX4.wtIqCj

 Which existing lever is this? None I’ve seen

8
3/29/2023 4:27pm
Sir HC wrote:
Primoz wrote:
Doubt it. The block is unsprung on the rear but sprung on the front. It would also have to be a tuned mass damper to achieve...

Doubt it. The block is unsprung on the rear but sprung on the front. It would also have to be a tuned mass damper to achieve this functionality and I think a tuned mass damper might be quite heavy to do anything, depending on the frequencies that were intended to be filtered out.

To be completely honest, not thinking it through completely, I don't see much of a use for an interter-type unit on a mountainbike, except for pedalling performance. In F1 (and prototypes) Inerters were used to take off the spikes in forces in suspension to ensure as constant force as possible on the tyre patch as that gave the most grip. And I think one of the effects was it made the car seem much heavier to the suspension than it actually was, effectively improving the sprung/unsprung ratio.

For what it's worth, they were banned in the new 2022 set of rules: https://www.formula1.com/en/latest/article.tech-tuesday-how-2022s-suspe…

Another photo

EAC00881-E5FC-47B6-931C-A0F9EE332ADF

 

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SteveClimber
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3/29/2023 5:09pm

I doubt its an inerter, its not connect to the lower legs, so only way it could be if its a oil based j-damper (McLarens code for their original oil based inerter) running of the airpsring shaft somehow, way too complicated.

I think it could be there to monitor the airspring pressures for telemetry (explains why its bolted to air spring side.

Inerters aren't needed on a MTB, its what arms and legs are for. 

Gnougat
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3/29/2023 6:04pm Edited Date/Time 3/29/2023 6:05pm

EXT Aria air shock coming 4 April 2023.

 

 

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Outlawed
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3/29/2023 7:48pm Edited Date/Time 3/29/2023 7:58pm

Long time listener, first time caller. Happened to stumble across this (cannot link directly as the posts gets deemed as spam)
chainsawoopsie

chainsawoopsie1

 weight is said to be 16.35kg

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Verbl Kint
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3/29/2023 9:47pm
Outlawed wrote:
Long time listener, first time caller. Happened to stumble across this (cannot link directly as the posts gets deemed as spam)  weight is said to be...

Long time listener, first time caller. Happened to stumble across this (cannot link directly as the posts gets deemed as spam)
chainsawoopsie

chainsawoopsie1

 weight is said to be 16.35kg

I wonder why they chose the DHF MaxxTerra Exo+ over the much better Assegai MaxxGrip Exo+.  Note that the rear tire they chose is a DHR MaxxGrip. I can't imagine the price going significantly higher if they chose the Assegai over the DHF (someone please correct me if I'm wrong).

16.35kg OOTB is pretty good these days for a solid aluminum bruiser bike.  A few key upgrades down the line can easily shave this down to about 15kg.

3

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