MTB Tech Rumors and Innovation

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nskerb
Posts
335
Joined
3/3/2020
Location
Kelso, WA US
3/22/2023 8:05am

Hey we heard you like draggy high pivots, so we added a drag box to your high pivot!

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sspomer
Posts
6030
Joined
6/26/2009
Location
Boise, ID US
3/22/2023 8:06am

embedding kavenz insta post here for the deets. they need 20 orders to make the frame

 
 

 

7
Primoz
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4519
Joined
8/1/2009
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SI
3/22/2023 8:38am

I still don't get it how having the tensioner next to the tyre and so down low is a good idea. People constantly mention how low the derailleur cages are on modern drivetrains, but those are always protected by the rear wheel while the BB gets MUCH lower at bottom out. Add a rock in there and you have a slight case of hard touching.

15
puddinghead
Posts
11
Joined
11/22/2022
Location
Blairgowrie GB
3/22/2023 8:50am
nskerb wrote:

Hey we heard you like draggy high pivots, so we added a drag box to your high pivot!

Drag box sounds like a tv show I would probably watch!

4
Mugen
Posts
136
Joined
3/28/2014
Location
FR
3/22/2023 8:58am
Yes, thats been a thing on a few bikes over the last few years. Most likely a cue towards the upcoming Sram E-bike motor system.  Now...

Yes, thats been a thing on a few bikes over the last few years. Most likely a cue towards the upcoming Sram E-bike motor system. 

Now when your battery dies, you cant shift into a lower gear to get your ultra heavy bike up the hill back home!

To be fair, the way shimano do this is that the motor powers down with some charge left in the battery for the display and shifting to keep working. So you might get a few hundred meters less of range, but still plenty of shifts to get home. (That said, pedalling a full fat 24kg ebike in off is a miserable experience even on the flat.)

3
Simpancz
Posts
22
Joined
5/19/2022
Location
CA
3/22/2023 8:59am
nskerb wrote:
I keep commenting really dumb shit, but I'm thinking of a couple things, SRAM related.  -they have a 4 piston Level T now, between those and...

I keep commenting really dumb shit, but I'm thinking of a couple things, SRAM related. 

-they have a 4 piston Level T now, between those and the Codes, I'm assuming they will bail on guides right? Rip guide. 

-No Boxxer released. Wonder if its waiting until Sea Otter, along with the Vivid looking shock. 

Masjo wrote:
Guides/G2s are being discontinued. It was mentioned in one of the overview articles but I can't remember who said it.  That leads me to hope that...

Guides/G2s are being discontinued. It was mentioned in one of the overview articles but I can't remember who said it. 

That leads me to hope that more 'trail' bikes will get Codes instead (since it's such a small weight increase for way more power) but I have a feeling we will see especially low end bikes get the new Level 4 piston brakes instead. Here's hoping they're better than Guides.

If you compare the G2 caliper and the "new" level 4 piston caliper, it is same as G2. So the new Level is G2 without swingling.

2
3/22/2023 9:02am

Good chance SRAM knew when Trp was dropping and scheduled for same date to bury it in the news

Lol no, that embargo date for the SRAM Transmission was set early last fall. 
If anything TRP should have caught wind and not released on same day. Everyone in industry knew March 21st was end of SRAM's embargo. 

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3/22/2023 9:27am

Good chance SRAM knew when Trp was dropping and scheduled for same date to bury it in the news

Lol no, that embargo date for the SRAM Transmission was set early last fall.  If anything TRP should have caught wind and not released on same...

Lol no, that embargo date for the SRAM Transmission was set early last fall. 
If anything TRP should have caught wind and not released on same day. Everyone in industry knew March 21st was end of SRAM's embargo. 

I simply remember Santa Cruz doing so to we are one a few years back.  Hard to compete for eyeballs with Danny mac launching a product.  Guess my inner conspiracy theorist got the better of me  here 😂 

 

In reality it’s likely all these releases correspond with the big cycling convention going on right now.

2
kcy4130
Posts
319
Joined
7/14/2021
Location
MT US
3/22/2023 9:31am
Primoz wrote:
I still don't get it how having the tensioner next to the tyre and so down low is a good idea. People constantly mention how low...

I still don't get it how having the tensioner next to the tyre and so down low is a good idea. People constantly mention how low the derailleur cages are on modern drivetrains, but those are always protected by the rear wheel while the BB gets MUCH lower at bottom out. Add a rock in there and you have a slight case of hard touching.

Agreed. Having the tensioner in the place of a rear derailleur location would mean a tiny bit more unsprung weight, and the lower pulley will be pulled up when suspension is near bottom out. But still rear derailleur location for the tensioner seems a lot more sensible to me. 

2
Zuestman
Posts
189
Joined
10/27/2014
Location
Seattle, WA US
3/22/2023 9:32am

The only reason why everything was launched yesterday is Taipei cycle show to draw people to their booths there.  it's no different than Sea Otter launches....

7
sspomer
Posts
6030
Joined
6/26/2009
Location
Boise, ID US
3/22/2023 9:58am

speaking of taipei, saw this random video from the show. haven't watched it all yet, but at 8:00 - TRP ABS brakes? hardly any detail, but shows a dual-disc setup. is this old news?

 image-20230322105804-1

2
Primoz
Posts
4519
Joined
8/1/2009
Location
SI
3/22/2023 10:05am Edited Date/Time 3/22/2023 10:07am

@sspomer that's not a dual disc setup, the smaller, black 'rotor' is the speed sensor ring. There's an inductance (I think so?) sensor near the caliper sensing the holes and the solids thus calculating the rotational speed.

https://qph.cf2.quoracdn.net/main-qimg-0a674e586db066287752e63566f102ad…

Motor bikes have the same setup: https://www.revzilla.com/blog_content_image/image/62260/Honda_photo.jpg

6
coyoterun
Posts
12
Joined
6/7/2014
Location
San Francisco, CA US
3/22/2023 10:20am
ArchiRaph wrote:
 AXS directly powered by e-bike battery… ?

5481DFD4-D8D1-4AFB-9E2E-FFB23AF3787D.jpeg?VersionId=hSzglH

 AXS directly powered by e-bike battery… ?

Yes, thats been a thing on a few bikes over the last few years. Most likely a cue towards the upcoming Sram E-bike motor system.  Now...

Yes, thats been a thing on a few bikes over the last few years. Most likely a cue towards the upcoming Sram E-bike motor system. 

Now when your battery dies, you cant shift into a lower gear to get your ultra heavy bike up the hill back home!

It happened to me once, my AXS battery empty right after a long DH section, and I need to do a 3.5 miles slight incline climb out. Not a long climb, but it would have been painful since bike was in high gear. 

Luckily, it was a weekend. So I decided to just sit down and wait... sure enough, 3 mins later, a small pack came up, and I spotted 1 rider had AXS. I kindly asked for favor to borrow his battery to make a few gear shift. Made it back to the car in lower gear 😊.

9
sspomer
Posts
6030
Joined
6/26/2009
Location
Boise, ID US
3/22/2023 10:28am

LOL @coyoterun waiting for another axs user for battery. that's hilarious!

thanks @Primoz for info on the brakes.

here's another taipei vid just b/c they're fascinating even if not much MTB content

 

 

5
TimBud
Posts
530
Joined
2/29/2012
Location
GB
3/22/2023 12:20pm

823B1735-1C86-446C-9D6D-C0D0B25FBA42

 Hopefully this is not prophetic

4
Dave_Camp
Posts
460
Joined
8/25/2009
Location
CO US
3/22/2023 12:24pm

Pretty sure the axle is the main thing holding the derailleur in alignment (I have one and installed it).


 

9
3/22/2023 12:31pm
Dave_Camp wrote:

Pretty sure the axle is the main thing holding the derailleur in alignment (I have one and installed it).


 

Yup. DM-ed bee_kay77 about that. 

2
3/22/2023 12:34pm

New product tomorrow from Ochain:

0FA13E9A-9F64-4722-8267-F5DA9F8D820D.jpeg?VersionId=p0XGfB

 
maybe it’s the the adjustable external version?

A28104C0-8D38-401F-B11E-328662F73630

 

3
3/22/2023 12:40pm
TimBud wrote:
 Hopefully this is not prophetic

823B1735-1C86-446C-9D6D-C0D0B25FBA42

 Hopefully this is not prophetic

I watched this video yesterday, seems to bring about the same criticism: https://youtu.be/rDxgxHiijF0

He also mentions that there's a toothed washer facing the carbon frame, which in theory should wear into carbon dropouts over time and gradually push the derailleur out of alignment. Honestly I think most of the potential problems with this design would be solved if they just added limit screws, but no now if your frame tolerances aren't very tight (which seems to be a common issue) your shifting might be permanently screwed.

3
TimBud
Posts
530
Joined
2/29/2012
Location
GB
3/22/2023 12:41pm
Dave_Camp wrote:

Pretty sure the axle is the main thing holding the derailleur in alignment (I have one and installed it).


 

If manufacturers can fuck something up they will

9
slimshady
Posts
146
Joined
9/16/2011
Location
AR
3/22/2023 1:00pm Edited Date/Time 3/22/2023 1:42pm
New product tomorrow from Ochain:   maybe it’s the the adjustable external version?  

New product tomorrow from Ochain:

0FA13E9A-9F64-4722-8267-F5DA9F8D820D.jpeg?VersionId=p0XGfB

 
maybe it’s the the adjustable external version?

A28104C0-8D38-401F-B11E-328662F73630

 

Ochain???

20230322 170015 0.jpg?VersionId=lkrcqFaUW.hf3geA

 

1
7
3/22/2023 1:17pm
TimBud wrote:
 Hopefully this is not prophetic

823B1735-1C86-446C-9D6D-C0D0B25FBA42

 Hopefully this is not prophetic

How can a derailleur thats aligned to the axle be out of alignment with the cassette?

I feel like people are trying really hard to crap on this tech, but it seems pretty dang dialed.

22
1
3/22/2023 1:36pm

Rant mode on

1) How is standind o the derailleur body be a test of durability? Take a big rock and bang the derailleur and the cage with it, very hard, hand seee what happens (might be actually super tough, but when is the actual body the problem with durability?) 2) I get it that PB editors are just chasing money nowadays, but them keeping calling 4-bar frames 6-bar really grinds my gears.

Rant mode off.

On a more serious note, The saracen looks cool, they went away completely from their previous platform. Also interesting that it looks to be a split pivot.

5
brash
Posts
942
Joined
4/24/2019
Location
AU
3/22/2023 1:53pm
luisgutrod wrote:

I am patiently waiting for the new rockshox stuff, as I will need a new DH fork for this summer.... 

Have you tried a Dorado? If not, do try it - that’s how you’ll figure it out that you need one in your life! 😁

I'd love to try one, but been tall and hence riding bikes with large stack (and hence large head tube) it pretty much rules out a Dorado as you just can't fit one on most bikes. Seems like a great fork.

1
brash
Posts
942
Joined
4/24/2019
Location
AU
3/22/2023 1:57pm
ArchiRaph wrote:
 AXS directly powered by e-bike battery… ?

5481DFD4-D8D1-4AFB-9E2E-FFB23AF3787D.jpeg?VersionId=hSzglH

 AXS directly powered by e-bike battery… ?

My Merida E-mtb had this in 2019, Powered the Shimano Di2 mech via cable wired into motor wiring block, was so trick at the time. Ripped the cable out a few times but never severed it.

The issue with that Di2 was the mechs were so weak, it shifted so nice but any stick or mild topple over cost you $700 Sad  

Primoz
Posts
4519
Joined
8/1/2009
Location
SI
3/22/2023 2:05pm
TimBud wrote:
 Hopefully this is not prophetic

823B1735-1C86-446C-9D6D-C0D0B25FBA42

 Hopefully this is not prophetic

How can a derailleur thats aligned to the axle be out of alignment with the cassette? I feel like people are trying really hard to crap...

How can a derailleur thats aligned to the axle be out of alignment with the cassette?

I feel like people are trying really hard to crap on this tech, but it seems pretty dang dialed.

Axially.

3
coyoterun
Posts
12
Joined
6/7/2014
Location
San Francisco, CA US
3/22/2023 2:13pm
TimBud wrote:
 Hopefully this is not prophetic

823B1735-1C86-446C-9D6D-C0D0B25FBA42

 Hopefully this is not prophetic

How can a derailleur thats aligned to the axle be out of alignment with the cassette? I feel like people are trying really hard to crap...

How can a derailleur thats aligned to the axle be out of alignment with the cassette?

I feel like people are trying really hard to crap on this tech, but it seems pretty dang dialed.

Primoz wrote:

Axially.

I would assume you can adjust by using the "micro" adjustment", either on the Sram AXS App, or on the shifter/pod. 

 

Simpancz
Posts
22
Joined
5/19/2022
Location
CA
3/22/2023 2:16pm
Rant mode on 1) How is standind o the derailleur body be a test of durability? Take a big rock and bang the derailleur and the...

Rant mode on

1) How is standind o the derailleur body be a test of durability? Take a big rock and bang the derailleur and the cage with it, very hard, hand seee what happens (might be actually super tough, but when is the actual body the problem with durability?) 2) I get it that PB editors are just chasing money nowadays, but them keeping calling 4-bar frames 6-bar really grinds my gears.

Rant mode off.

On a more serious note, The saracen looks cool, they went away completely from their previous platform. Also interesting that it looks to be a split pivot.

Standing on the derailleur is marketing BS. Fanatik gues tried to be more realistic (I wish the dangle would be in a way of travel). Quite impressive how much impact survived even the old AXS gen

https://www.youtube.com/watch?v=i3QzPxdN1e4

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3/22/2023 2:27pm Edited Date/Time 3/22/2023 2:28pm

If your axle and cassette aren't aligned then the derailleur alignment is the least of your issues!

Its a worry when someone who is a bike mechanic has no idea.

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1
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