MTB Tech Rumors and Innovation

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kcy4130
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1/24/2023 11:53am

What are the chances that sram switches all brakes to mineral oil but makes sure to use a mineral oil that’s incompatible with shimano’s mineral oil. That’d be just like the bike industry!

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nskerb
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1/24/2023 12:13pm

Pretty big assumption saying that either Shimano or Mangura produce their own mineral oil lol. 

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TimBud
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1/24/2023 12:35pm
nskerb wrote:

Pretty big assumption saying that either Shimano or Mangura produce their own mineral oil lol. 

In the same way that  all DOT 5.1 is the same right, lol.

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bulletbass man
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1/24/2023 4:21pm

I’ve been working thru the same bottle of shimano mineral oil for sometime now.  Even have used it to sharpen a knife when the honing oil i use was backordered.

 

not remotely expensive.  Put in smaller bottles for travel.  Infinitely more convenient than dot in practice.

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dolface
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1/24/2023 5:10pm

Can we table the "pick a brake fluid and be a dick about it" discussion and get back to tech rumors please?

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1/25/2023 12:32am

Has anyone heard something new about the supposed highish-pivot Trek Slash? Smile

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C-LION
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1/25/2023 5:46am

New BoXXer not Blackbox anymore…

5CBF3C12-1ED3-40C2-A5D6-173C6288DE40

 

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metadave
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1/25/2023 7:11am
C-LION wrote:
New BoXXer not Blackbox anymore…  

New BoXXer not Blackbox anymore…

5CBF3C12-1ED3-40C2-A5D6-173C6288DE40

 

Def looks like 38mm. Bring on March23

15x110 axle too?

That would be a sad day when 20mm completely goes away.... 

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1/25/2023 7:24am

Def looks like 38mm. Bring on March23

15x110 axle too?

metadave wrote:

That would be a sad day when 20mm completely goes away.... 

Dunno, am no engineer but the move to 38mm stanchions and different lower casting could maybe help with the stiffness/compliance and negate the need of such a beefy axle? I've been riding a Zeb in some pretty rough stuff and never wanted a stiffer feeling fork. I remember the older fox 40's being way too stiff

1/25/2023 7:34am

Depends on what stiffnes you’re talking about. I’ve gone from a 40 to the Dorado and the fore-aft stiffnes is massively different (in a very good way) which you immediately notice on the trail.


I don’t think these 38mm chassis really help you because it is more or less neglectable because the crown/steerer interface is what’s making the biggest difference. You could have the biggest stanchions in the world but if they’re only so „weakly“ attached to the crowns/steerer interface thats quite pointless.

Anyway that’s just my opinion Smile

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dylanjp006
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1/25/2023 10:51am

Interesting about the new boxxer post above. Just saw something else from canyon and mille on the current normal boxxer Ultimate 2BC35EFB-39B8-48F9-904A-EF86DF22564F

 

1/25/2023 11:06am
dylanjp006 wrote:
Interesting about the new boxxer post above. Just saw something else from canyon and mille on the current normal boxxer Ultimate   

Interesting about the new boxxer post above. Just saw something else from canyon and mille on the current normal boxxer Ultimate 2BC35EFB-39B8-48F9-904A-EF86DF22564F

 

Its pretty common for early press photos to be on whatever bike they could get to them immediately, so its often the previous years stock-standard bike thats a size too small with a few minor parts that aren't sponsor-accurate. Then you'll slowly start seeing new content with the proper spec for the new year. It always seems to be way more manic to get riders their proper kit in time for the race season than it would appear from the outside. 

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shreda
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1/25/2023 11:44am

15x110 axle too?

Looks like 20mm x 110mm Boost to me

The video for the Forbidden dh-pro to build stated the fork had a 15x110 axle. And the fork was a Boxer prototype…

The video for the Forbidden dh-pro to build stated the fork had a 15x110 axle. And the fork was a Boxer prototype…

5:25… I would say this is a 20mm axle and just a typo in the spec sheet.

https://youtu.be/j2bAF4KXMi8

FullSend
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1/25/2023 12:22pm

Looks like 20mm x 110mm Boost to me

The video for the Forbidden dh-pro to build stated the fork had a 15x110 axle. And the fork was a Boxer prototype…

The video for the Forbidden dh-pro to build stated the fork had a 15x110 axle. And the fork was a Boxer prototype…

shreda wrote:

5:25… I would say this is a 20mm axle and just a typo in the spec sheet.

https://youtu.be/j2bAF4KXMi8

There was talk of RS wanting to ditch the 20mm axle though. Would probably allow them to use the same lower chassis for the ZEB and the Boxxer. They already use the same stanchions. That is also in line with that leaked SRAM pdf that mentioned a 200mm air shaft kit for the ZEB which someone posted in the PB forums some time ago.

Primoz
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1/25/2023 1:39pm Edited Date/Time 1/25/2023 1:41pm
Depends on what stiffnes you’re talking about. I’ve gone from a 40 to the Dorado and the fore-aft stiffnes is massively different (in a very good...

Depends on what stiffnes you’re talking about. I’ve gone from a 40 to the Dorado and the fore-aft stiffnes is massively different (in a very good way) which you immediately notice on the trail.


I don’t think these 38mm chassis really help you because it is more or less neglectable because the crown/steerer interface is what’s making the biggest difference. You could have the biggest stanchions in the world but if they’re only so „weakly“ attached to the crowns/steerer interface thats quite pointless.

Anyway that’s just my opinion Smile

There's a certain topic on this forum covering this.

The new Boxxer being 38 mm and 15x110 would make some sense as it would mean reusing ZEB lowers as they come with no modifications.
EDIT: of course I did not read through to the next page where exactly this comment is already covered... Right above mine of course.

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lickmycrinkle
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1/25/2023 5:00pm
FullSend wrote:
There was talk of RS wanting to ditch the 20mm axle though. Would probably allow them to use the same lower chassis for the ZEB and...

There was talk of RS wanting to ditch the 20mm axle though. Would probably allow them to use the same lower chassis for the ZEB and the Boxxer. They already use the same stanchions. That is also in line with that leaked SRAM pdf that mentioned a 200mm air shaft kit for the ZEB which someone posted in the PB forums some time ago.

My guess is if it isn't coming, it was definitely planned (outside of your mentioned leak). When fully extended a Charger 2.1 shaft hangs down at least 20mm longer than a 190mm air spring.

If it was shelved, it's probably because even 190mm Zebs already eat their stanchions due to too much leverage, not enough bushing.

Remains to be seen for the new ones though. I cooked an original set of stanchions in a season at 190. I'll see this summer if it happens to my new Ultimates with their longer bushings.

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Onawalk
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1/26/2023 8:19am
The video for the Forbidden dh-pro to build stated the fork had a 15x110 axle. And the fork was a Boxer prototype…

The video for the Forbidden dh-pro to build stated the fork had a 15x110 axle. And the fork was a Boxer prototype…

shreda wrote:

5:25… I would say this is a 20mm axle and just a typo in the spec sheet.

https://youtu.be/j2bAF4KXMi8

FullSend wrote:
There was talk of RS wanting to ditch the 20mm axle though. Would probably allow them to use the same lower chassis for the ZEB and...

There was talk of RS wanting to ditch the 20mm axle though. Would probably allow them to use the same lower chassis for the ZEB and the Boxxer. They already use the same stanchions. That is also in line with that leaked SRAM pdf that mentioned a 200mm air shaft kit for the ZEB which someone posted in the PB forums some time ago.

Cant be the same stanchions from the Zeb to the Boxxxer, as one is a dual crown and one is a single crown, same diameter is prolly likely.

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FullSend
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1/26/2023 10:57am Edited Date/Time 1/26/2023 10:58am
shreda wrote:

5:25… I would say this is a 20mm axle and just a typo in the spec sheet.

https://youtu.be/j2bAF4KXMi8

FullSend wrote:
There was talk of RS wanting to ditch the 20mm axle though. Would probably allow them to use the same lower chassis for the ZEB and...

There was talk of RS wanting to ditch the 20mm axle though. Would probably allow them to use the same lower chassis for the ZEB and the Boxxer. They already use the same stanchions. That is also in line with that leaked SRAM pdf that mentioned a 200mm air shaft kit for the ZEB which someone posted in the PB forums some time ago.

Onawalk wrote:
Cant be the same stanchions from the Zeb to the Boxxxer, as one is a dual crown and one is a single crown, same diameter is...

Cant be the same stanchions from the Zeb to the Boxxxer, as one is a dual crown and one is a single crown, same diameter is prolly likely.

No, they are the same. The fact that they are pressed into a crown on one fork and clamped in the crown on the other fork doesn't make a difference. 99,9% sure that the new Boxxer will even feature exactly the same airspring design as the Debonair+ from the new ZEB.

What do you think why the old Boxxer had 35mm stanchions for ages? Because that way SRAM could use a lot of the same parts on the Boxxer, Lyrik, Pike, Yari and Revelation. It's all modular.

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Onawalk
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1/26/2023 11:01am
FullSend wrote:
There was talk of RS wanting to ditch the 20mm axle though. Would probably allow them to use the same lower chassis for the ZEB and...

There was talk of RS wanting to ditch the 20mm axle though. Would probably allow them to use the same lower chassis for the ZEB and the Boxxer. They already use the same stanchions. That is also in line with that leaked SRAM pdf that mentioned a 200mm air shaft kit for the ZEB which someone posted in the PB forums some time ago.

Onawalk wrote:
Cant be the same stanchions from the Zeb to the Boxxxer, as one is a dual crown and one is a single crown, same diameter is...

Cant be the same stanchions from the Zeb to the Boxxxer, as one is a dual crown and one is a single crown, same diameter is prolly likely.

FullSend wrote:
No, they are the same. The fact that they are pressed into a crown on one fork and clamped in the crown on the other fork...

No, they are the same. The fact that they are pressed into a crown on one fork and clamped in the crown on the other fork doesn't make a difference. 99,9% sure that the new Boxxer will even feature exactly the same airspring design as the Debonair+ from the new ZEB.

What do you think why the old Boxxer had 35mm stanchions for ages? Because that way SRAM could use a lot of the same parts on the Boxxer, Lyrik, Pike, Yari and Revelation. It's all modular.

The length matters, the stanchions on the Zeb are shorter than the Boxxxer.

Again, same dia, which is all but confirmed, but not the same length….

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FullSend
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1/26/2023 11:04am

No way the seat tube is going to survive the torsional load transmitted by those huge upper rocker link levers over a season of hard racing. There's just honestly no way the seat tube is not going to snap.

Maybe they don't even expect the frame to last an entire season because they'll have the next prototypes ready by the time these break apart.

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1
1/26/2023 11:29am
FullSend wrote:
No way the seat tube is going to survive the torsional load transmitted by those huge upper rocker link levers over a season of hard racing...

No way the seat tube is going to survive the torsional load transmitted by those huge upper rocker link levers over a season of hard racing. There's just honestly no way the seat tube is not going to snap.

Maybe they don't even expect the frame to last an entire season because they'll have the next prototypes ready by the time these break apart.

It's an Intense alu frame, they're used to their frames lasting two weeks or less

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TimBud
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1/26/2023 11:33am

And it’s a DH frame.

If you’re sitting down you’re doing it wrong! Laughing

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FullSend
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1/26/2023 2:08pm
TimBud wrote:
And it’s a DH frame. If you’re sitting down you’re doing it wrong! 

And it’s a DH frame.

If you’re sitting down you’re doing it wrong! Laughing

By "seat tube" I meant the tube above the BB, onto which the main pivot and the upper pivot are attached. The force I'm talking about isn't transmitted into that piece by sitting on the saddle, but by the suspension compressing and the rear end flexing laterally.

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Stewyeww
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1/26/2023 2:30pm
TimBud wrote:
And it’s a DH frame. If you’re sitting down you’re doing it wrong! 

And it’s a DH frame.

If you’re sitting down you’re doing it wrong! Laughing

FullSend wrote:
By "seat tube" I meant the tube above the BB, onto which the main pivot and the upper pivot are attached. The force I'm talking about...

By "seat tube" I meant the tube above the BB, onto which the main pivot and the upper pivot are attached. The force I'm talking about isn't transmitted into that piece by sitting on the saddle, but by the suspension compressing and the rear end flexing laterally.

Wow that sarcasm went straight over your head hey

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Rbags
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1/26/2023 7:03pm

Jess Blewitt riding the new GT fury? She’s been hiding it on Instagram lately but looks like coronet have let the cat out of the bag. 9ABDED86-7C87-4A65-B725-8869E3DFBC28

 

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