MTB Tech Rumors and Innovation

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metadave
Posts
1242
Joined
2/15/2016
Location
Revelstoke, BC CA
4/20/2025 2:24pm Edited Date/Time 4/20/2025 2:25pm

Some of you never rode when we had no clutches so the loose, flopping chain smashed against every part of your aluminum bike and the fork knocked in the 1 1/8th head tubes and then echoed through your monocoque frame and it shows.

I can barely hear my current bike compared to the 3rd grade marching bands on wheels we used to ride pre-2012. I didn't even know you could hear what your tires were doing for the first 10 years I rode. 

45
4/20/2025 2:45pm
metadave wrote:
Some of you never rode when we had no clutches so the loose, flopping chain smashed against every part of your aluminum bike and the fork...

Some of you never rode when we had no clutches so the loose, flopping chain smashed against every part of your aluminum bike and the fork knocked in the 1 1/8th head tubes and then echoed through your monocoque frame and it shows.

I can barely hear my current bike compared to the 3rd grade marching bands on wheels we used to ride pre-2012. I didn't even know you could hear what your tires were doing for the first 10 years I rode. 

I did. But I still expect better. We are talking five figure bikes that can be solved with some clamps and mastic tape or a little oval thing. Why is that left to the customers to figure out where it goes? 

18
1
dknapton
Posts
54
Joined
11/5/2020
Location
CA
4/20/2025 2:52pm
metadave wrote:
Some of you never rode when we had no clutches so the loose, flopping chain smashed against every part of your aluminum bike and the fork...

Some of you never rode when we had no clutches so the loose, flopping chain smashed against every part of your aluminum bike and the fork knocked in the 1 1/8th head tubes and then echoed through your monocoque frame and it shows.

I can barely hear my current bike compared to the 3rd grade marching bands on wheels we used to ride pre-2012. I didn't even know you could hear what your tires were doing for the first 10 years I rode. 

My $8000 bike I bought a year ago with a clutch derailleur still sounds like garbage so I think they still need to work on it. 

17
Dave_Camp
Posts
460
Joined
8/25/2009
Location
CO US
4/20/2025 6:57pm

Agree. I think running a chainguide with a lower roller helps a ton, it eliminates a lot of metallic clinking noise of the chain tapping on the chainring as it bounces around.

6
earleb
Posts
351
Joined
3/23/2023
Location
North Vancouver, BC CA
4/20/2025 7:48pm

STFU guides. They actually work. They also help with the mythical pedal kickback.

External cables with proper guides/clamps.

Lastly a silent rear hub.

But none of it really matters when you ride solo with earbuds in 90% of the time. 

13
1
4/20/2025 11:54pm Edited Date/Time 4/21/2025 12:56am

Guess I found the new Levo Alloy in the wild. With a S-Works motor.


IMG 2998 0

11
1
willknisley
Posts
12
Joined
3/17/2025
Location
Provo, UT US
4/21/2025 12:11am
ruebinator wrote:
Guess I found the new Levo Alloy in the wild. With a S-Works motor.

Guess I found the new Levo Alloy in the wild. With a S-Works motor.


IMG 2998 0

I’m more confused on why they’re running xts with centerlines

5
4/21/2025 12:37am
ruebinator wrote:
Guess I found the new Levo Alloy in the wild. With a S-Works motor.

Guess I found the new Levo Alloy in the wild. With a S-Works motor.


IMG 2998 0

I’m more confused on why they’re running xts with centerlines

i guess parts bin build, maybe to not attract attention?

3
Konda
Posts
42
Joined
5/28/2023
Location
Kidderminster GB
4/21/2025 1:44am
ruebinator wrote:
Guess I found the new Levo Alloy in the wild. With a S-Works motor.

Guess I found the new Levo Alloy in the wild. With a S-Works motor.


IMG 2998 0

I'm more curious about the new bike rack that mounts to the front wheel of a car.

Is it available for older 4 bolt hubs? 

34
4/21/2025 2:06am Edited Date/Time 4/21/2025 2:08am
ruebinator wrote:
Guess I found the new Levo Alloy in the wild. With a S-Works motor.

Guess I found the new Levo Alloy in the wild. With a S-Works motor.


IMG 2998 0

Konda wrote:

I'm more curious about the new bike rack that mounts to the front wheel of a car.

Is it available for older 4 bolt hubs? 

Normal rack 4 bolts, S-Works rack 5 bolts.

14
4/21/2025 4:50am
ruebinator wrote:
Guess I found the new Levo Alloy in the wild. With a S-Works motor.

Guess I found the new Levo Alloy in the wild. With a S-Works motor.


IMG 2998 0

That's either a new model or a test mule! Nice spot!

3
ballz
Posts
464
Joined
7/30/2024
Location
Ouagadougou EH
4/21/2025 5:00am

This one goes to class 11.

2
4/21/2025 9:03am
hukriede wrote:

New TR11 build kits, colors, geo and kinematic updates on Transition's website

https://www.transitionbikes.com/Bikes_TR11.cfm

What do you mean, refined? It’s the exact same thing as it was before.  All they did was just choose two different colors. 

4
jma853
Posts
31
Joined
10/23/2022
Location
Kabul AF
4/21/2025 9:14am

What do you mean, refined? It’s the exact same thing as it was before.  All they did was just choose two different colors. 

I think the only difference is that the head angle got steeped by just one degree

1
bermed
Posts
80
Joined
6/28/2023
Location
Boston, MA US
4/21/2025 9:18am
earleb wrote:
STFU guides. They actually work. They also help with the mythical pedal kickback.External cables with proper guides/clamps.Lastly a silent rear hub.But none of it really matters...

STFU guides. They actually work. They also help with the mythical pedal kickback.

External cables with proper guides/clamps.

Lastly a silent rear hub.

But none of it really matters when you ride solo with earbuds in 90% of the time. 

My issue with my Rocky Mountain Altitude is actually that the Sram eagle axs rear deraillieur b-screw will violently slap against the hanger and make really loud clanking sounds. I've taken slow motion videos to confirm this - chain never makes contact with the frame. Has anyone solved this? 

In terms of rumors and speculation, I imagine that bike manufacturers could make a silent bike but the effort involved wouldn't translate to increased sales. 

2
4/21/2025 9:20am

What do you mean, refined? It’s the exact same thing as it was before.  All they did was just choose two different colors. 

jma853 wrote:

I think the only difference is that the head angle got steeped by just one degree

It’s probably just because it comes to the boxer, which is a different height than a 40. They also could have changed the spec to look better to consumers without changing the actual geo (lot of brands do this lol)  everything else looks the same but head tube angle   Or the person entering the data on the website coulda messed up lol  


   Speaking of rumors and tr-11 I saw a recently sponsored kiwi rider bouncing around on a “new” one.   Dig around and there’s some pics of it some pages back.  

2
seanfisseli
Posts
559
Joined
4/16/2024
Location
Santa Cruz, CA US
4/21/2025 10:36am
earleb wrote:
STFU guides. They actually work. They also help with the mythical pedal kickback.External cables with proper guides/clamps.Lastly a silent rear hub.But none of it really matters...

STFU guides. They actually work. They also help with the mythical pedal kickback.

External cables with proper guides/clamps.

Lastly a silent rear hub.

But none of it really matters when you ride solo with earbuds in 90% of the time. 

bermed wrote:
My issue with my Rocky Mountain Altitude is actually that the Sram eagle axs rear deraillieur b-screw will violently slap against the hanger and make really...

My issue with my Rocky Mountain Altitude is actually that the Sram eagle axs rear deraillieur b-screw will violently slap against the hanger and make really loud clanking sounds. I've taken slow motion videos to confirm this - chain never makes contact with the frame. Has anyone solved this? 

In terms of rumors and speculation, I imagine that bike manufacturers could make a silent bike but the effort involved wouldn't translate to increased sales. 

look up the hall lock mod. seems like a well-kept secret. havent done it yet but it seems to be the answer for a lot of us.

4
JVP
Posts
207
Joined
4/20/2016
Location
Seattle, WA US
4/21/2025 10:57am Edited Date/Time 4/21/2025 11:01am
bermed wrote:
My issue with my Rocky Mountain Altitude is actually that the Sram eagle axs rear deraillieur b-screw will violently slap against the hanger and make really...

My issue with my Rocky Mountain Altitude is actually that the Sram eagle axs rear deraillieur b-screw will violently slap against the hanger and make really loud clanking sounds. I've taken slow motion videos to confirm this - chain never makes contact with the frame. Has anyone solved this? 

In terms of rumors and speculation, I imagine that bike manufacturers could make a silent bike but the effort involved wouldn't translate to increased sales. 

Yep, solved if I'm understanding you correctly. Hall-lock mod so the b-pivot can't rotate. File the X01 b-bushing down slightly, a little bit at a time (test, file, test, file) until the derailleur can't rotate at the bolt. 

If you've got a GX there's no bushing to modify, it's a crappy steel-on-aluminum design that suffers from premature wearification. The X01 b-bolt with bushing is around $30 USD and works perfectly on the GX so get that and do the mod.

Your rear wheel will be slightly harder to remove as the derailleur doesn't pivot out of the way. But it's not too hard to get it off, easier than what we used to deal with back in the early '00s.

I really, really need to make a video about this mod, it's absolutely worth doing to silence the derailleur and it makes shifting nice and crispy, particularly on played-out GX derailleurs.

5
4/21/2025 11:05am

Does SRAM do the hall lock mod different than shimano? Shimano you just put a washer between the B screw bumper and the derailleur so that it bottoms out when you tighten it. To get your wheel off, just loosen your derailleur. Pic of shimano for reference. Insert 1-2mm plastic washer where red line is. I didn’t remove the c clip and b screw bumper, I just cut my washer so I could open it and slide it in there.76668900306  8E50B86A-5DEE-4473-B1BF-152A61047BA2

6
bermed
Posts
80
Joined
6/28/2023
Location
Boston, MA US
4/21/2025 11:54am
bermed wrote:
My issue with my Rocky Mountain Altitude is actually that the Sram eagle axs rear deraillieur b-screw will violently slap against the hanger and make really...

My issue with my Rocky Mountain Altitude is actually that the Sram eagle axs rear deraillieur b-screw will violently slap against the hanger and make really loud clanking sounds. I've taken slow motion videos to confirm this - chain never makes contact with the frame. Has anyone solved this? 

In terms of rumors and speculation, I imagine that bike manufacturers could make a silent bike but the effort involved wouldn't translate to increased sales. 

JVP wrote:
Yep, solved if I'm understanding you correctly. Hall-lock mod so the b-pivot can't rotate. File the X01 b-bushing down slightly, a little bit at a time...

Yep, solved if I'm understanding you correctly. Hall-lock mod so the b-pivot can't rotate. File the X01 b-bushing down slightly, a little bit at a time (test, file, test, file) until the derailleur can't rotate at the bolt. 

If you've got a GX there's no bushing to modify, it's a crappy steel-on-aluminum design that suffers from premature wearification. The X01 b-bolt with bushing is around $30 USD and works perfectly on the GX so get that and do the mod.

Your rear wheel will be slightly harder to remove as the derailleur doesn't pivot out of the way. But it's not too hard to get it off, easier than what we used to deal with back in the early '00s.

I really, really need to make a video about this mod, it's absolutely worth doing to silence the derailleur and it makes shifting nice and crispy, particularly on played-out GX derailleurs.

What about just affixing a piece of plastic or something where the b-gap screw touches the hanger, so that when it smacks against it, it's damped?

4/21/2025 12:12pm
Dave_Camp wrote:
Agree. I think running a chainguide with a lower roller helps a ton, it eliminates a lot of metallic clinking noise of the chain tapping on...

Agree. I think running a chainguide with a lower roller helps a ton, it eliminates a lot of metallic clinking noise of the chain tapping on the chainring as it bounces around.

Dude, Rali chain mag!! I’ll plug it if you won’t haha. I have it on two bikes and it works amazingly well

7
1
TEAMROBOT
Posts
1348
Joined
9/2/2009
Location
Los Angeles, CA US
4/21/2025 12:51pm Edited Date/Time 4/21/2025 12:56pm

I’m more confused on why they’re running xts with centerlines

Welcome to the wild and wonderful world of the bike industry, where you get worked to death and paid next to nothing, but there are literal piles of new and lightly used parts, even parts falling out the cracks of the building. What parts are you running? Whatever's in the pile. At least until you get laid off next week.

36
Finkill
Posts
225
Joined
9/2/2015
Location
GB
4/21/2025 12:55pm

I’m more confused on why they’re running xts with centerlines

TEAMROBOT wrote:
Welcome to the wild and wonderful world of the bike industry, where you get worked to death and paid next to nothing, but there are literal...

Welcome to the wild and wonderful world of the bike industry, where you get worked to death and paid next to nothing, but there are literal piles of new and lightly used parts, even parts falling out the cracks of the building. What parts are you running? Whatever's in the pile. At least until you get laid off next week.

100% accurate

4
4/21/2025 12:59pm
TEAMROBOT wrote:
Welcome to the wild and wonderful world of the bike industry, where you get worked to death and paid next to nothing, but there are literal...

Welcome to the wild and wonderful world of the bike industry, where you get worked to death and paid next to nothing, but there are literal piles of new and lightly used parts, even parts falling out the cracks of the building. What parts are you running? Whatever's in the pile. At least until you get laid off next week.

Quite often running used parts off returned/warrantied bikes that can't be resold. I've got a lot of kit that way.

5
TimBud
Posts
530
Joined
2/29/2012
Location
GB
4/21/2025 12:59pm
TEAMROBOT wrote:
Welcome to the wild and wonderful world of the bike industry, where you get worked to death and paid next to nothing, but there are literal...

Welcome to the wild and wonderful world of the bike industry, where you get worked to death and paid next to nothing, but there are literal piles of new and lightly used parts, even parts falling out the cracks of the building. What parts are you running? Whatever's in the pile. At least until you get laid off next week.

Hilarious, sad and true 

1
Evil96
Posts
802
Joined
8/21/2014
Location
Portogruaro, VE IT
4/21/2025 1:03pm
bermed wrote:
My issue with my Rocky Mountain Altitude is actually that the Sram eagle axs rear deraillieur b-screw will violently slap against the hanger and make really...

My issue with my Rocky Mountain Altitude is actually that the Sram eagle axs rear deraillieur b-screw will violently slap against the hanger and make really loud clanking sounds. I've taken slow motion videos to confirm this - chain never makes contact with the frame. Has anyone solved this? 

In terms of rumors and speculation, I imagine that bike manufacturers could make a silent bike but the effort involved wouldn't translate to increased sales. 

JVP wrote:
Yep, solved if I'm understanding you correctly. Hall-lock mod so the b-pivot can't rotate. File the X01 b-bushing down slightly, a little bit at a time...

Yep, solved if I'm understanding you correctly. Hall-lock mod so the b-pivot can't rotate. File the X01 b-bushing down slightly, a little bit at a time (test, file, test, file) until the derailleur can't rotate at the bolt. 

If you've got a GX there's no bushing to modify, it's a crappy steel-on-aluminum design that suffers from premature wearification. The X01 b-bolt with bushing is around $30 USD and works perfectly on the GX so get that and do the mod.

Your rear wheel will be slightly harder to remove as the derailleur doesn't pivot out of the way. But it's not too hard to get it off, easier than what we used to deal with back in the early '00s.

I really, really need to make a video about this mod, it's absolutely worth doing to silence the derailleur and it makes shifting nice and crispy, particularly on played-out GX derailleurs.

please do make that video, i miss my 1st oem GX eagle derailleur, it was silent as until it gave up, i had both xt and a new gx and they slap so much more, nothing else has changed, i'm thinking to go ViVo but damn it's an expensive piece of component, while for sure worth it i'd rather keep the cash

3
dolface
Posts
1656
Joined
10/26/2015
Location
CA US
4/21/2025 1:22pm
bermed wrote:
My issue with my Rocky Mountain Altitude is actually that the Sram eagle axs rear deraillieur b-screw will violently slap against the hanger and make really...

My issue with my Rocky Mountain Altitude is actually that the Sram eagle axs rear deraillieur b-screw will violently slap against the hanger and make really loud clanking sounds. I've taken slow motion videos to confirm this - chain never makes contact with the frame. Has anyone solved this? 

In terms of rumors and speculation, I imagine that bike manufacturers could make a silent bike but the effort involved wouldn't translate to increased sales. 

JVP wrote:
Yep, solved if I'm understanding you correctly. Hall-lock mod so the b-pivot can't rotate. File the X01 b-bushing down slightly, a little bit at a time...

Yep, solved if I'm understanding you correctly. Hall-lock mod so the b-pivot can't rotate. File the X01 b-bushing down slightly, a little bit at a time (test, file, test, file) until the derailleur can't rotate at the bolt. 

If you've got a GX there's no bushing to modify, it's a crappy steel-on-aluminum design that suffers from premature wearification. The X01 b-bolt with bushing is around $30 USD and works perfectly on the GX so get that and do the mod.

Your rear wheel will be slightly harder to remove as the derailleur doesn't pivot out of the way. But it's not too hard to get it off, easier than what we used to deal with back in the early '00s.

I really, really need to make a video about this mod, it's absolutely worth doing to silence the derailleur and it makes shifting nice and crispy, particularly on played-out GX derailleurs.

Evil96 wrote:
please do make that video, i miss my 1st oem GX eagle derailleur, it was silent as until it gave up, i had both xt and...

please do make that video, i miss my 1st oem GX eagle derailleur, it was silent as until it gave up, i had both xt and a new gx and they slap so much more, nothing else has changed, i'm thinking to go ViVo but damn it's an expensive piece of component, while for sure worth it i'd rather keep the cash

4
JVP
Posts
207
Joined
4/20/2016
Location
Seattle, WA US
4/21/2025 1:23pm
Does SRAM do the hall lock mod different than shimano? Shimano you just put a washer between the B screw bumper and the derailleur so that...

Does SRAM do the hall lock mod different than shimano? Shimano you just put a washer between the B screw bumper and the derailleur so that it bottoms out when you tighten it. To get your wheel off, just loosen your derailleur. Pic of shimano for reference. Insert 1-2mm plastic washer where red line is. I didn’t remove the c clip and b screw bumper, I just cut my washer so I could open it and slide it in there.76668900306  8E50B86A-5DEE-4473-B1BF-152A61047BA2

Haven't tried Shimano, been on SRAM lately. For SRAM I looked briefly for a washer that was the right size, but didn't fine one. Rather than spend a day looking for a washer I ordered the bushing and have been happy with the results having done it a handful of times.

What kind of washer did you use for Shimano?

1
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