MTB Tech Rumors and Innovation

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segamethod
Posts
70
Joined
4/26/2024
Location
Anaheim, CA US
3/6/2025 2:29pm
Suns_PSD wrote:

That new cable Transmission derailleur in combo with the X01 cassette (355 grams) & chain should be a pretty dope set up.

Etney wrote:
Not sure how well the transmission derailleurs plays with the last gen eagle casettes.But a X0 or XX casette is right at 380 grams, an XX...

Not sure how well the transmission derailleurs plays with the last gen eagle casettes.

But a X0 or XX casette is right at 380 grams, an XX SL is 346 grams, so about 200 grams lighter than the SX casette linked earlier, but the SL one is VERY expensive, even at discount.

 

Im actually considering going fully battery free on my Enduro and "downgrading" to one of these derailleurs when they come out

 

The AXS T-type derailleurs absolutely do not play nice with old Eagle cassettes. There's physical interference long before you can even start worrying about shift quality.

5
1
JVP
Posts
207
Joined
4/20/2016
Location
Seattle, WA US
3/6/2025 2:38pm
segamethod wrote:

The AXS T-type derailleurs absolutely do not play nice with old Eagle cassettes. There's physical interference long before you can even start worrying about shift quality.

You can actually do the inverse with brilliant results on most?? UDH bikes. T-type cassette, chain and ring with standard Eagle derailleur. Just takes 15 minutes grinding down an all-aluminum UDH hanger to clear the chain.

I'm doing this on my last-gen Norco optic with a GX Eage derailleur (Hall-lock mod as well). Friggin brilliant setup!  Though now with mechanical T-type there will be something just as good from the factory.

7
1
bikelurker
Posts
172
Joined
3/23/2023
Location
Bilbao, Vizcaya ES
3/6/2025 11:46pm
Idk how much time anyone is really spending in the 10T gear with 34T and even 36T chainrings coming on modern eebs. Even in boost you'd...

Idk how much time anyone is really spending in the 10T gear with 34T and even 36T chainrings coming on modern eebs. Even in boost you'd hit 20mph pretty quick no?

Whenever I get another eeb I'm going to run a 30T with an 11-36T Zee drivetrain.

I worked for a manufactured that where usually forced by its dealers to warantee rear cassettes with sub 200 milles, because the 11t cog started slipping. And that was even in hybrid style ebikes with a 42t chainring

Javigutz
Posts
43
Joined
10/6/2022
Location
Beverly Hills, CA US
3/7/2025 6:19am

Hi guys

Anyone have news (or rumors) about the possible next generation Transition Spire? 

2
johann377
Posts
23
Joined
11/16/2024
Location
Mosfellsbaer IS
3/7/2025 6:35am
Javigutz wrote:

Hi guys

Anyone have news (or rumors) about the possible next generation Transition Spire? 

Saved this pic a ways back, no idea if it's the new one or if it's just a one off proto.

b51c468c-e835-4fd9-b5d9-c80283303417
2
roost66
Posts
111
Joined
2/4/2024
Location
Potsdam, NY US
3/7/2025 6:54am

More pics of the SRAM Motive brake: IMG 2938

9
Mitch7MTB
Posts
24
Joined
1/9/2025
Location
Bend, OR US
3/7/2025 8:30am
roost66 wrote:
More pics of the SRAM Motive brake:

More pics of the SRAM Motive brake: IMG 2938

That certainly isn't my color palette, but similar to the Maven launch edition, I like seeing a company as large as SRAM do something unique with the launch of a new product - even if it's "just" a non-traditional color. Also, the Maven Ultimate Expert Kit (if you could get your hands on one at launch) was a really excellent deal considering how much it came with for basically the same price as just the brakes alone. 

If only these were purple to match my current Sentinel accent color scheme... I'd be nervously waiting around with a credit card to replace my Code setup.

2
jonkranked
Posts
1175
Joined
5/5/2016
Location
Norristown, PA US
3/7/2025 8:36am
Mitch7MTB wrote:
That certainly isn't my color palette, but similar to the Maven launch edition, I like seeing a company as large as SRAM do something unique with...

That certainly isn't my color palette, but similar to the Maven launch edition, I like seeing a company as large as SRAM do something unique with the launch of a new product - even if it's "just" a non-traditional color. Also, the Maven Ultimate Expert Kit (if you could get your hands on one at launch) was a really excellent deal considering how much it came with for basically the same price as just the brakes alone. 

If only these were purple to match my current Sentinel accent color scheme... I'd be nervously waiting around with a credit card to replace my Code setup.

i hope they do the launch package deal like they did with the Mavens too, that was a killer deal.  

3
Jotegr
Posts
339
Joined
6/28/2024
Location
Interior, BC CA
3/7/2025 9:41am Edited Date/Time 3/7/2025 9:45am
segamethod wrote:

What do we have here? 

XS-1270 Eagle Transmission Cassette | CS-XS-1270-A1 | SRAM

10-52t compatible with an HG driver body, huh? Mech Tranny release imminent?

JVP wrote:
Integrated 10 tooth cog-lockring. I hope they offer a 1 meter breaker bar cassette tool with that. Going to be a lot of these on e-bikes...

Integrated 10 tooth cog-lockring. I hope they offer a 1 meter breaker bar cassette tool with that. Going to be a lot of these on e-bikes with squid riders camping out in boost in the10t. Fun removal, unless there's some clever detail I'm missing. That said, I'm stoked to see mechanical t-type is almost here!

Or Cog-ring, if you will. 

The one nice thing about XD for big torquey boys and ebikes is the fact the system held up much better to torque than soft HG freehub bodies. Not only are you going to have to use the enforcer lever to get the damn lockring off, you'll probably have to employ the hammer to remove the cassette from the body after they've fused together through torque warping. The writeup says EMTB and aluminum freehub bodies so maybe they've put a sleeve or something in the mounting interface to prevent this? 

Kinda funny that we've moved on from people wanting to replace the bigger rings in the cassette (like the original OneUp converter or some E13 options) as a product of spinning up climbs on non-electric MTBs on one by drivetrains to now the 10-14 being the replaceable side because presumably that's where you camp all the time on the ebike spinning at your top out of 32 km/hr. I don't think I've ever worn out that side of a cassette. 

2
WheelNut
Posts
2
Joined
9/7/2018
Location
CA
3/7/2025 10:40am
Idk how much time anyone is really spending in the 10T gear with 34T and even 36T chainrings coming on modern eebs. Even in boost you'd...

Idk how much time anyone is really spending in the 10T gear with 34T and even 36T chainrings coming on modern eebs. Even in boost you'd hit 20mph pretty quick no?

Whenever I get another eeb I'm going to run a 30T with an 11-36T Zee drivetrain.

People park the chain on the 10T, put it in max boost and pedal at a 30rpm cadence. If you're not putting out much power super low cadence is comfortable. 

3
Evil96
Posts
802
Joined
8/21/2014
Location
Portogruaro, VE IT
3/7/2025 10:43am
roost66 wrote:
More pics of the SRAM Motive brake:

More pics of the SRAM Motive brake: IMG 2938

Mitch7MTB wrote:
That certainly isn't my color palette, but similar to the Maven launch edition, I like seeing a company as large as SRAM do something unique with...

That certainly isn't my color palette, but similar to the Maven launch edition, I like seeing a company as large as SRAM do something unique with the launch of a new product - even if it's "just" a non-traditional color. Also, the Maven Ultimate Expert Kit (if you could get your hands on one at launch) was a really excellent deal considering how much it came with for basically the same price as just the brakes alone. 

If only these were purple to match my current Sentinel accent color scheme... I'd be nervously waiting around with a credit card to replace my Code setup.

What’s stopping you from getting some dominions or hope v4 in purple

2
metadave
Posts
1242
Joined
2/15/2016
Location
Revelstoke, BC CA
3/7/2025 10:46am
Idk how much time anyone is really spending in the 10T gear with 34T and even 36T chainrings coming on modern eebs. Even in boost you'd...

Idk how much time anyone is really spending in the 10T gear with 34T and even 36T chainrings coming on modern eebs. Even in boost you'd hit 20mph pretty quick no?

Whenever I get another eeb I'm going to run a 30T with an 11-36T Zee drivetrain.

WheelNut wrote:
People park the chain on the 10T, put it in max boost and pedal at a 30rpm cadence. If you're not putting out much power super...

People park the chain on the 10T, put it in max boost and pedal at a 30rpm cadence. If you're not putting out much power super low cadence is comfortable. 

This is why I get yelled at by customers at work because their month old full sus E-bike that they ride around the city is skipping in the small cog. 

6
3/7/2025 10:51am
p6pb27740493

 

The other place has this wild design (3D printed steel)

I get the point is an engineering exercise, not bringing a product to market, but man the torque on those pivots, wild internal leverage ratios

6
Suns_PSD
Posts
356
Joined
10/7/2015
Location
Austin, TX US
3/7/2025 11:33am
Idk how much time anyone is really spending in the 10T gear with 34T and even 36T chainrings coming on modern eebs. Even in boost you'd...

Idk how much time anyone is really spending in the 10T gear with 34T and even 36T chainrings coming on modern eebs. Even in boost you'd hit 20mph pretty quick no?

Whenever I get another eeb I'm going to run a 30T with an 11-36T Zee drivetrain.

You wouldn't spend any time in 10th with a 34 or 36, even more so with a 29er rear.

I have no use for above 20mph 98% of the time on my e-bike, but when you need it, you really need it. Jump lines being the best case, road transfers being the other situation. The fast jumps can be downright scary when your e-bike becomes this huge slow turd once crossing over 20 mph, right when you need it to not nose-dive.

I run a 32T front on my mid-power e-bike with a SRAM 11 Speed (10-42) with a mullet rear wheel, and here are some thoughts for you:

1) The gears are too close together and it's very common to have to shift 2x in immediate succession, with a mid-power and a 32T. For a full power, I'd absolutely want a 34T front chainring, just to spread out the gears.

2) Mostly, my gearing is fine, but there are occasions that I wish I had a lower gear than the 42/ 32 (1.31) low end ratio that I have. 36/ 30 is a 1.2, and you might be okay on a full power with less gear, but it's going to be a low cadence and put a lot of stress on parts. And with my preferred 34T up front the low-end gear is only a 1.06. That would be brutal on the bike AND the human.

3) Generally, I can't see a ton of use for a 52T 1st gear on a full power e-bike (unless the assistance breaks down way out on the trails!) but there is an argument to be made for getting more in the middle of the cassette because with my 32 front I spend a lot of time in the higher gears. A 34T combined with a 500% ratio cassette would be helpful for not having to shift so quickly, staying more towards the middle of the cassette, and having the gear range for all conditions. See Linkglide 11 speed for some good ideas, but she's a heavy gal at around 625 grams I think.

2
8
3/7/2025 12:15pm
Idk how much time anyone is really spending in the 10T gear with 34T and even 36T chainrings coming on modern eebs. Even in boost you'd...

Idk how much time anyone is really spending in the 10T gear with 34T and even 36T chainrings coming on modern eebs. Even in boost you'd hit 20mph pretty quick no?

Whenever I get another eeb I'm going to run a 30T with an 11-36T Zee drivetrain.

Suns_PSD wrote:
You wouldn't spend any time in 10th with a 34 or 36, even more so with a 29er rear.I have no use for above 20mph 98%...

You wouldn't spend any time in 10th with a 34 or 36, even more so with a 29er rear.

I have no use for above 20mph 98% of the time on my e-bike, but when you need it, you really need it. Jump lines being the best case, road transfers being the other situation. The fast jumps can be downright scary when your e-bike becomes this huge slow turd once crossing over 20 mph, right when you need it to not nose-dive.

I run a 32T front on my mid-power e-bike with a SRAM 11 Speed (10-42) with a mullet rear wheel, and here are some thoughts for you:

1) The gears are too close together and it's very common to have to shift 2x in immediate succession, with a mid-power and a 32T. For a full power, I'd absolutely want a 34T front chainring, just to spread out the gears.

2) Mostly, my gearing is fine, but there are occasions that I wish I had a lower gear than the 42/ 32 (1.31) low end ratio that I have. 36/ 30 is a 1.2, and you might be okay on a full power with less gear, but it's going to be a low cadence and put a lot of stress on parts. And with my preferred 34T up front the low-end gear is only a 1.06. That would be brutal on the bike AND the human.

3) Generally, I can't see a ton of use for a 52T 1st gear on a full power e-bike (unless the assistance breaks down way out on the trails!) but there is an argument to be made for getting more in the middle of the cassette because with my 32 front I spend a lot of time in the higher gears. A 34T combined with a 500% ratio cassette would be helpful for not having to shift so quickly, staying more towards the middle of the cassette, and having the gear range for all conditions. See Linkglide 11 speed for some good ideas, but she's a heavy gal at around 625 grams I think.

19
brash
Posts
941
Joined
4/24/2019
Location
AU
3/7/2025 12:25pm

yeah 34 with a 51T is perfect for e-mtb, I use every gear on a ride for sure, 51T in "trail" on a ep8 gets used a fair bit on super steep pinches around here, mostly rock slab stuff.

I ride like a normal bike cadence though, the shimano motor won't work well with the slow cadence like those Yamaha Giants of old, you literally just sauntered along and the thing was flying up the hill lol.

 

17
3/7/2025 1:48pm
Javigutz wrote:

Hi guys

Anyone have news (or rumors) about the possible next generation Transition Spire? 

johann377 wrote:
Saved this pic a ways back, no idea if it's the new one or if it's just a one off proto.

Saved this pic a ways back, no idea if it's the new one or if it's just a one off proto.

b51c468c-e835-4fd9-b5d9-c80283303417

Looks like the next tr-11 based on the mullet wheels and who was on it.  Saw another one with full 27.5 recently too.    Prolly won’t be for a while. Hope it actually comes with a dh shock unlike the last bike. 

2
Mitch7MTB
Posts
24
Joined
1/9/2025
Location
Bend, OR US
3/7/2025 3:06pm
roost66 wrote:
More pics of the SRAM Motive brake:

More pics of the SRAM Motive brake: IMG 2938

Mitch7MTB wrote:
That certainly isn't my color palette, but similar to the Maven launch edition, I like seeing a company as large as SRAM do something unique with...

That certainly isn't my color palette, but similar to the Maven launch edition, I like seeing a company as large as SRAM do something unique with the launch of a new product - even if it's "just" a non-traditional color. Also, the Maven Ultimate Expert Kit (if you could get your hands on one at launch) was a really excellent deal considering how much it came with for basically the same price as just the brakes alone. 

If only these were purple to match my current Sentinel accent color scheme... I'd be nervously waiting around with a credit card to replace my Code setup.

Evil96 wrote:

What’s stopping you from getting some dominions or hope v4 in purple

Do I have a meaningful reason? No. I do have all of the Shimano and SRAM bleed stuff, spare pads for every bike, etc that just makes it easy to stick with the big 2 - especially since I'd assume there's a good chance the Motive will use the same pad as the Code.

I know people who have run Dominions and Hope V4's with decent experiences, but not without their little issues or amazing enough performance reports over the normal Shimano or SRAM suspects for me to justify the change. Also, there's a decent chance I change my accent parts after a year to a different color, so while color matched brakes would be sweet, it would by far be the most expensive "accent" part I'd have to swap when I get tired of purple. I'm still tempted though...

4
AgrAde
Posts
196
Joined
5/21/2015
Location
AL US
3/7/2025 8:14pm

I used that logic for way too long before I finally bought some Dominions and realised I was being really stupid. Never going back to Shimano or Sram brakes. The only downside I've found is holding back the vomit whenever i have to use someone elses brakes.

17
10
GnarShred
Posts
25
Joined
4/25/2021
Location
Mars, CA US
3/7/2025 8:17pm
AgrAde wrote:
I used that logic for way too long before I finally bought some Dominions and realised I was being really stupid. Never going back to Shimano...

I used that logic for way too long before I finally bought some Dominions and realised I was being really stupid. Never going back to Shimano or Sram brakes. The only downside I've found is holding back the vomit whenever i have to use someone elses brakes.

Until you grab on some Trinitys

4
7
AgrAde
Posts
196
Joined
5/21/2015
Location
AL US
3/7/2025 8:30pm
GnarShred wrote:

Until you grab on some Trinitys

Yeah anything that Intend or Trickstuff do I'm sure is frikken awesome, but nobody I ride with is on that level of jewellery.

4
3
GnarShred
Posts
25
Joined
4/25/2021
Location
Mars, CA US
3/7/2025 9:05pm
AgrAde wrote:

Yeah anything that Intend or Trickstuff do I'm sure is frikken awesome, but nobody I ride with is on that level of jewellery.

Yeah the price on em is a little hard to stomach.  My trinitys are just about worth more than the rest of my bike combined 😅

1
10
3/7/2025 11:43pm
GnarShred wrote:

Until you grab on some Trinitys

Yup. I still "regret" trying my friend's Trickstuffs. Now I am on Trinity, and everything else is cheap 

5
7
TEAMROBOT
Posts
1348
Joined
9/2/2009
Location
Los Angeles, CA US
3/8/2025 10:11pm
baronKanon wrote:

Yup. I still "regret" trying my friend's Trickstuffs. Now I am on Trinity, and everything else is cheap 

Hey everyone, wouldn't it be cool if there was a thread for debating brake stuff? There is!

https://www.vitalmtb.com/forums/hub/nerding-out-brakes-shall-we-not-another-tech-deraliment?page=38#comment-585176

41
2
3/9/2025 6:36am
GnarShred wrote:

Sorry Pops

TEAMROBOT ain’t yo daddy. TEAMROBOT is your robot overlord. TEAMROBOT will not abide by your passive aggression. TEAMROBOT will direct you to the appropriate forum thread. May we all thank TEAMROBOT for his continued patience.

42
2
Cordall
Posts
6
Joined
12/21/2022
Location
Mawdesley GB
3/9/2025 8:50am

2 years ago some eagle eyed super nibblers on here spotted an ochain on saint cranks at a DH world cup,,,,, I figured enough time has passed that i can disclose how it happened. Am sure someone will be interested. https://www.mtbr.com/threads/modifying-saint-cranks.1237732/#replies

43
Onawalk
Posts
344
Joined
7/5/2021
Location
CA
3/9/2025 9:25am
Cordall wrote:
2 years ago some eagle eyed super nibblers on here spotted an ochain on saint cranks at a DH world cup,,,,, I figured enough time has...

2 years ago some eagle eyed super nibblers on here spotted an ochain on saint cranks at a DH world cup,,,,, I figured enough time has passed that i can disclose how it happened. Am sure someone will be interested. https://www.mtbr.com/threads/modifying-saint-cranks.1237732/#replies

Some incredible work, well done!

2
RaggedEdge
Posts
80
Joined
12/5/2017
Location
Austin, TX US
3/9/2025 9:34am

That awesome, great creativity and execution!

2
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