MTB Tech Rumors and Innovation

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noodlenosteeze
Posts
219
Joined
1/12/2023
Location
Salt Lake City, UT, USA
4/2/2025 10:37pm
What do you mean baby a long travel rig? Have you seen what material gravity race bikes have been made from for the last........10 years? I've...

What do you mean baby a long travel rig? Have you seen what material gravity race bikes have been made from for the last........10 years? I've seen more catastrophically broken alloy bikes in that time, and Pivot/Santa Cruz customers just plain don't want Aluminium anyway

I'm not talking about catastrophic failure. Carbon is kind of pain in the butt long term esthetically IMO, and it eventually looks really hagard once enough...

I'm not talking about catastrophic failure. Carbon is kind of pain in the butt long term esthetically IMO, and it eventually looks really hagard once enough paint is chipped or worn. An A.L. frame you can just take all the paint off and go raw if the paint gets too bad. I feel like people with carbon bikes always go out of their way to make sure it's not rubbing up on anything, ect. I can deal with that special treatment for short travel bikes, but it kind of gets old and feels weird  doing it for a burly long travel bike. I don't mind having a weaker, heavier bike if it's a lot easier to live with, I'm not a pro rider so I don't need to ride the same bike a pro does. 

yahmon wrote:
Nothing screams “claptrap” quite like a stripped-raw production bike that was covered in logos when it left the showroom floor 6 years prior.And if you’re chipping...

Nothing screams “claptrap” quite like a stripped-raw production bike that was covered in logos when it left the showroom floor 6 years prior.

And if you’re chipping so much paint off of a bike that it looks haggard due to its paint long before the components become outdated enough for those to be the sore thumb sticking out, maybe it’s a personal problem…

 

You can tell us that you care too much about what other people are riding.

3
1
Primoz
Posts
4680
Joined
8/1/2009
Location
SI
4/3/2025 2:58am
I'm not talking about catastrophic failure. Carbon is kind of pain in the butt long term esthetically IMO, and it eventually looks really hagard once enough...

I'm not talking about catastrophic failure. Carbon is kind of pain in the butt long term esthetically IMO, and it eventually looks really hagard once enough paint is chipped or worn. An A.L. frame you can just take all the paint off and go raw if the paint gets too bad. I feel like people with carbon bikes always go out of their way to make sure it's not rubbing up on anything, ect. I can deal with that special treatment for short travel bikes, but it kind of gets old and feels weird  doing it for a burly long travel bike. I don't mind having a weaker, heavier bike if it's a lot easier to live with, I'm not a pro rider so I don't need to ride the same bike a pro does. 

yahmon wrote:
Nothing screams “claptrap” quite like a stripped-raw production bike that was covered in logos when it left the showroom floor 6 years prior.And if you’re chipping...

Nothing screams “claptrap” quite like a stripped-raw production bike that was covered in logos when it left the showroom floor 6 years prior.

And if you’re chipping so much paint off of a bike that it looks haggard due to its paint long before the components become outdated enough for those to be the sore thumb sticking out, maybe it’s a personal problem…

 

It's probably a Cali-Centric problem, because they put 1/4"-1/2" granite aggregate on all the fire roads around here. You get rock chips from CLIMBS around here...

It's probably a Cali-Centric problem, because they put 1/4"-1/2" granite aggregate on all the fire roads around here. You get rock chips from CLIMBS around here if you're not a total squid.

And if you have a problem with a raw aluminum mtb frame, that sounds like a very serious personal problem. You should probably seek professional help with that one🫡

What's wrong with a raw carbon frame then? 

1
notthatbryan
Posts
435
Joined
3/8/2023
Location
Acworth, GA, USA
4/3/2025 3:08am Edited Date/Time 4/3/2025 3:13am
Primoz wrote:

You need an inert atmosphere to print aluminium... 

Industrial 3D printers fill the print chamber with nitrogen while printing. Titanium also needs inert gas atmosphere when 3d printing.

The one at work we use has a built in nitrogen generator. 

5
4/3/2025 5:43am
Primoz wrote:

You need an inert atmosphere to print aluminium... 

Industrial 3D printers fill the print chamber with nitrogen while printing. Titanium also needs inert gas atmosphere when 3d printing.The one at work we use has...

Industrial 3D printers fill the print chamber with nitrogen while printing. Titanium also needs inert gas atmosphere when 3d printing.

The one at work we use has a built in nitrogen generator. 

Interesting to hear that some use Nitrogen, I don't know much about the operation of laser sintering machines so I assumed Argon would be the gas of choice.

4
Flo7
Posts
17
Joined
4/6/2023
Location
Biedermannsdorf, AT
4/3/2025 6:43am

The new Reverb AXS will come with max 250mm travel!

WhatsApp Image 2025-04-03 at 13.14.46.jpeg?VersionId=V1zTMgpGkEvthcUgj90EW
1
notthatbryan
Posts
435
Joined
3/8/2023
Location
Acworth, GA, USA
4/3/2025 6:47am
Primoz wrote:

You need an inert atmosphere to print aluminium... 

Industrial 3D printers fill the print chamber with nitrogen while printing. Titanium also needs inert gas atmosphere when 3d printing.The one at work we use has...

Industrial 3D printers fill the print chamber with nitrogen while printing. Titanium also needs inert gas atmosphere when 3d printing.

The one at work we use has a built in nitrogen generator. 

Interesting to hear that some use Nitrogen, I don't know much about the operation of laser sintering machines so I assumed Argon would be the gas...

Interesting to hear that some use Nitrogen, I don't know much about the operation of laser sintering machines so I assumed Argon would be the gas of choice.

I assume argon would work but require separate tanks. The nitrogen generator pulls nitrogen out of the atmosphere so you don't have to worry about tanks, just turn it on and let it build up before starting the print. Our laser welder uses argon and metal 3D printing is basically laser welding. 

1
4/3/2025 6:50am Edited Date/Time 4/3/2025 6:51am

New reverb AXS is up on the red site.. RRP is shockingly reasonable...

3
bmiliu
Posts
6
Joined
6/16/2011
Location
CA
4/3/2025 7:03am Edited Date/Time 4/3/2025 7:03am
JerseyMojo wrote:

New reverb AXS is up on the red site.. RRP is shockingly reasonable...

Yet stack height of 237mm at 175 drop is horrid

2
TEAMROBOT
Posts
1582
Joined
9/2/2009
Location
Los Angeles, CA, USA
Fantasy
4/3/2025 7:59am Edited Date/Time 4/3/2025 2:18pm
bmiliu wrote:

Yet stack height of 237mm at 175 drop is horrid

This is a wild guess, but I've been looking at the chart on the website and I think that the 237mm stack height you're referencing on 175mm drop posts might be referring to the entire top of the seatpost, not just the "collar to saddle rail" stack height that we're used to measuring. For instance, I'm looking at the 250mm seatpost and the total post length is listed as 652.8mm, the minimum exposed height is 314.2mm, and the maximum frame insertion is listed as 338.6mm. 

314.2mm exposed height + 338.6 frame insertion = 652.8mm, which is the entire length of the post, and doesn't leave any room for the tippy top of the seatpost (the portion above the saddle rails). If I had to guess with my eyeballs how tall that portion is, I'd say 12mm and I'd take that much off that stack height measure. So your 175mm post would have a stack height of 225mm.

image 252.png?VersionId=gZ2rOpuZi

 

Still, at 652.8mm long, that 250mm seatpost is longer than the 26" wide handlebars I learned to ride dirt jumps and downhill on, so it's going to require a special combination of frame and rider to accommodate the full 250mm seatpost

 Just for funsies I measured the dimensions on the XL Transition Sentinel I have in for testing and while it looks like I have 400mm of insertion depth, with 302mm exposed from seat collar to saddle rails I'm just short on the stack height to run the 250mm. Santa Cruz doesn't list max insertion depth on my Megatower, but eyeballing it looks like maybe 270mm, plus I run an enormous 347mm of seatpost sticking out of my frame (collar to rail), and that (617mm combined) won't accommodate the 652mm length. So even with my very large 820mm seat height (center of BB to top of saddle), it doesn't look like I'd be able to run the new 250mm Reverb on either of these bikes.

I think it's cool that they still went ahead and offered the 250mm drop post, because it will be a very niche product and they could have easily vetoed it due to smaller projected sale numbers. But some riders will be able to fit it, and they'll be stoked.

7
dolface
Posts
1715
Joined
10/26/2015
Location
USA
4/3/2025 7:59am
JerseyMojo wrote:

New reverb AXS is up on the red site.. RRP is shockingly reasonable...

For those who don't wanna click:

Price: $549 USD / €600 EUR / $945 AUS / £535

10
Carraig042
Posts
86
Joined
3/4/2013
Location
Jonesborough, TN, USA
4/3/2025 8:07am
JerseyMojo wrote:

New reverb AXS is up on the red site.. RRP is shockingly reasonable...

dolface wrote:

For those who don't wanna click:

Price: $549 USD / €600 EUR / $945 AUS / £535

Plus $150 for a remote if you do not have one. 

15
nskerb
Posts
372
Joined
3/3/2020
Location
Kelso, WA, USA
4/3/2025 8:15am
JerseyMojo wrote:

New reverb AXS is up on the red site.. RRP is shockingly reasonable...

dolface wrote:

For those who don't wanna click:

Price: $549 USD / €600 EUR / $945 AUS / £535

Is that really that good? IDK man.. I have pretty much just rode whatever dropper comes on my bike, I just don't really care to buy a nicer one but isn't like the best of the best cable droppers costing around 250 bucks?

4
seanfisseli
Posts
596
Joined
4/16/2024
Location
Santa Cruz, CA, USA
4/3/2025 8:19am
JerseyMojo wrote:

New reverb AXS is up on the red site.. RRP is shockingly reasonable...

dolface wrote:

For those who don't wanna click:

Price: $549 USD / €600 EUR / $945 AUS / £535

nskerb wrote:
Is that really that good? IDK man.. I have pretty much just rode whatever dropper comes on my bike, I just don't really care to buy...

Is that really that good? IDK man.. I have pretty much just rode whatever dropper comes on my bike, I just don't really care to buy a nicer one but isn't like the best of the best cable droppers costing around 250 bucks?

But this one has Active Ride

7
dolface
Posts
1715
Joined
10/26/2015
Location
USA
4/3/2025 8:22am
JerseyMojo wrote:

New reverb AXS is up on the red site.. RRP is shockingly reasonable...

dolface wrote:

For those who don't wanna click:

Price: $549 USD / €600 EUR / $945 AUS / £535

nskerb wrote:
Is that really that good? IDK man.. I have pretty much just rode whatever dropper comes on my bike, I just don't really care to buy...

Is that really that good? IDK man.. I have pretty much just rode whatever dropper comes on my bike, I just don't really care to buy a nicer one but isn't like the best of the best cable droppers costing around 250 bucks?

Bike Yoke Revive, which is the best dropper out there IMO, is $410ish for the longest version, 213mm, does not include the remote. Add in a PNW Loam Lever for ~$69ish...

3
4/3/2025 8:32am
bmiliu wrote:

Yet stack height of 237mm at 175 drop is horrid

TEAMROBOT wrote:
This is a wild guess, but I've been looking at the chart on the website and I think that the 237mm stack height you're referencing on...

This is a wild guess, but I've been looking at the chart on the website and I think that the 237mm stack height you're referencing on 175mm drop posts might be referring to the entire top of the seatpost, not just the "collar to saddle rail" stack height that we're used to measuring. For instance, I'm looking at the 250mm seatpost and the total post length is listed as 652.8mm, the minimum exposed height is 314.2mm, and the maximum frame insertion is listed as 338.6mm. 

314.2mm exposed height + 338.6 frame insertion = 652.8mm, which is the entire length of the post, and doesn't leave any room for the tippy top of the seatpost (the portion above the saddle rails). If I had to guess with my eyeballs how tall that portion is, I'd say 12mm and I'd take that much off that stack height measure. So your 175mm post would have a stack height of 225mm.

image 252.png?VersionId=gZ2rOpuZi

 

Still, at 652.8mm long, that 250mm seatpost is longer than the 26" wide handlebars I learned to ride dirt jumps and downhill on, so it's going to require a special combination of frame and rider to accommodate the full 250mm seatpost

 Just for funsies I measured the dimensions on the XL Transition Sentinel I have in for testing and while it looks like I have 400mm of insertion depth, with 302mm exposed from seat collar to saddle rails I'm just short on the stack height to run the 250mm. Santa Cruz doesn't list max insertion depth on my Megatower, but eyeballing it looks like maybe 270mm, plus I run an enormous 347mm of seatpost sticking out of my frame (collar to rail), and that (617mm combined) won't accommodate the 652mm length. So even with my very large 820mm seat height (center of BB to top of saddle), it doesn't look like I'd be able to run the new 250mm Reverb on either of these bikes.

I think it's cool that they still went ahead and offered the 250mm drop post, because it will be a very niche product and they could have easily vetoed it due to smaller projected sale numbers. But some riders will be able to fit it, and they'll be stoked.

Seems like Oneup is at 610mm for 240mm drop, so there is still at 30mm ish difference in stack 

image 253.png?VersionId=xIYSfDVY
5
4/3/2025 8:39am

More details on Reverb AXS - https://www.vitalmtb.com/news/press-release/all-new-rockshox-reverb-axs-dropper-post

Highlights
- Wireless, integrates with AXS ecosystem
- New 'air-over-air' design
- New 'ActiveRide' built-in compliance
- Two-bolt saddle clamp for round/oval rails
- Uses same AXS battery, charger, and controller
- Travel options: 100mm, 125mm, 150mm, 175mm, 200mm, 225mm, and 250mm
- Seatpost diameter: 30.9mm, 31.6mm, 34.9mm
- MSRP: $ 549 // € 600* // £ 535* // AU$ 945* (*includes VAT)

I've only got 3 rides in on the post ~5hrs ride time. It works great, as it should at the beginning of its life. A few things that have stood out:
- I was reminded how fast the post extends compared to cable droppers. Feels like a pro or con depending on how often you like riding at half-mast, as it can be tough to not get punched by your saddle when trying to stop it from extending.
- There is zero side-to-side play. 
- I ride flats with my feet tight to my cranks and my legs are size medium-large knee pad. The inside of my knee/thigh have occasionally bumped the new battery location. Not really an issue, but something that didn't happen with the previous Reverb
- The 'ActiveRide' feature, where the post has ~10mm of travel when not fully extended, has been useless on an acoustic bike. Not that it's bad, I've just not had a use for it. I played around with pedaling a flat dirt road with the post halfway up (or down?) and it did add some comfort. About as much comfort as you get going from riding with your shock locked out to open. It made me wish there was a way to engage the feature with the post fully extended, such as holding the controller longer. I think I'd use that for chattery, fast climbs when you want a little bit more cushion but need to get full pedal strokes. 
- It's still expensive, but it is cheaper than before. The obvious benefits for me are that it cleans up your cockpit, it's easy to install, and you don't have a cable or housing that wears out over time/needs replacing every so often. However, I still think I'd buy a cheaper mechanical dropper and save my money for other components. You know, like one of those 3D printed Specialized saddles Wink  

4
4/3/2025 8:58am
And since I know everyone here freakin' loves purple anodized parts and spending $10k+ on bikes, Yeti released its 40th Anniversary ASR - https://www.vitalmtb.com/news/press-release/yeti-releases-40th-anniversary-asrIt does...

And since I know everyone here freakin' loves purple anodized parts and spending $10k+ on bikes, Yeti released its 40th Anniversary ASR - https://www.vitalmtb.com/news/press-release/yeti-releases-40th-anniversary-asr

It does look pretty BALLER

MY25 YetiCycles ASR 40 Detail Link-2100x1575-599fcdcf-4cbf-41a4-82e7-9216d078eebfMY25 YetiCycles ASR HERO Front 40Anniversary-2100x1400-0acc71f7-f310-45a7-972a-89b406c5f502.jpg?VersionId=CKGDBTX

I really love these projects, especially because they always prove that "retro" colourways still look great on modern frames.

Every time, they make me check what the current colourways are because surely I just don't remember how good the modern colours are and no every time the retro colourway wins.

 

Oh and RM should build that alloy Pipedream bike with the linkage plates. 

15
nskerb
Posts
372
Joined
3/3/2020
Location
Kelso, WA, USA
4/3/2025 9:03am
nskerb wrote:
Is that really that good? IDK man.. I have pretty much just rode whatever dropper comes on my bike, I just don't really care to buy...

Is that really that good? IDK man.. I have pretty much just rode whatever dropper comes on my bike, I just don't really care to buy a nicer one but isn't like the best of the best cable droppers costing around 250 bucks?

Ah gotcha, yeah I was way off. Further solidifies my ethos of "don't upgrade droppers" lol.

Masjo
Posts
251
Joined
11/25/2014
Location
Ancaster, CA
4/3/2025 9:03am
More details on Reverb AXS - https://www.vitalmtb.com/news/press-release/all-new-rockshox-reverb-axs-dropper-postHighlights- Wireless, integrates with AXS ecosystem- New 'air-over-air' design- New 'ActiveRide' built-in compliance- Two-bolt saddle clamp for round/oval...

More details on Reverb AXS - https://www.vitalmtb.com/news/press-release/all-new-rockshox-reverb-axs-dropper-post

Highlights
- Wireless, integrates with AXS ecosystem
- New 'air-over-air' design
- New 'ActiveRide' built-in compliance
- Two-bolt saddle clamp for round/oval rails
- Uses same AXS battery, charger, and controller
- Travel options: 100mm, 125mm, 150mm, 175mm, 200mm, 225mm, and 250mm
- Seatpost diameter: 30.9mm, 31.6mm, 34.9mm
- MSRP: $ 549 // € 600* // £ 535* // AU$ 945* (*includes VAT)

I've only got 3 rides in on the post ~5hrs ride time. It works great, as it should at the beginning of its life. A few things that have stood out:
- I was reminded how fast the post extends compared to cable droppers. Feels like a pro or con depending on how often you like riding at half-mast, as it can be tough to not get punched by your saddle when trying to stop it from extending.
- There is zero side-to-side play. 
- I ride flats with my feet tight to my cranks and my legs are size medium-large knee pad. The inside of my knee/thigh have occasionally bumped the new battery location. Not really an issue, but something that didn't happen with the previous Reverb
- The 'ActiveRide' feature, where the post has ~10mm of travel when not fully extended, has been useless on an acoustic bike. Not that it's bad, I've just not had a use for it. I played around with pedaling a flat dirt road with the post halfway up (or down?) and it did add some comfort. About as much comfort as you get going from riding with your shock locked out to open. It made me wish there was a way to engage the feature with the post fully extended, such as holding the controller longer. I think I'd use that for chattery, fast climbs when you want a little bit more cushion but need to get full pedal strokes. 
- It's still expensive, but it is cheaper than before. The obvious benefits for me are that it cleans up your cockpit, it's easy to install, and you don't have a cable or housing that wears out over time/needs replacing every so often. However, I still think I'd buy a cheaper mechanical dropper and save my money for other components. You know, like one of those 3D printed Specialized saddles Wink  

Any chance you could measure/confirm the stack height of the new Reverb to see if what Robot mentioned (stack being measured to top of post, not saddle rails) to be true? It's odd/annoying that all of the seatpost manufacturers have not agreed upon a set of actual umbers and measurements to make on their posts.

I can just about fit a 210mm OneUp on my bike, but it's almost slammed (maybe +5mm). I would love a 200mm Reverb but given the simplifications that it comes with (and if it reviews well) I would consider dropping to a 175mm post to gain access to those benefits.

2
Masjo
Posts
251
Joined
11/25/2014
Location
Ancaster, CA
4/3/2025 9:53am
More details on Reverb AXS - https://www.vitalmtb.com/news/press-release/all-new-rockshox-reverb-axs-dropper-postHighlights- Wireless, integrates with AXS ecosystem- New 'air-over-air' design- New 'ActiveRide' built-in compliance- Two-bolt saddle clamp for round/oval...

More details on Reverb AXS - https://www.vitalmtb.com/news/press-release/all-new-rockshox-reverb-axs-dropper-post

Highlights
- Wireless, integrates with AXS ecosystem
- New 'air-over-air' design
- New 'ActiveRide' built-in compliance
- Two-bolt saddle clamp for round/oval rails
- Uses same AXS battery, charger, and controller
- Travel options: 100mm, 125mm, 150mm, 175mm, 200mm, 225mm, and 250mm
- Seatpost diameter: 30.9mm, 31.6mm, 34.9mm
- MSRP: $ 549 // € 600* // £ 535* // AU$ 945* (*includes VAT)

I've only got 3 rides in on the post ~5hrs ride time. It works great, as it should at the beginning of its life. A few things that have stood out:
- I was reminded how fast the post extends compared to cable droppers. Feels like a pro or con depending on how often you like riding at half-mast, as it can be tough to not get punched by your saddle when trying to stop it from extending.
- There is zero side-to-side play. 
- I ride flats with my feet tight to my cranks and my legs are size medium-large knee pad. The inside of my knee/thigh have occasionally bumped the new battery location. Not really an issue, but something that didn't happen with the previous Reverb
- The 'ActiveRide' feature, where the post has ~10mm of travel when not fully extended, has been useless on an acoustic bike. Not that it's bad, I've just not had a use for it. I played around with pedaling a flat dirt road with the post halfway up (or down?) and it did add some comfort. About as much comfort as you get going from riding with your shock locked out to open. It made me wish there was a way to engage the feature with the post fully extended, such as holding the controller longer. I think I'd use that for chattery, fast climbs when you want a little bit more cushion but need to get full pedal strokes. 
- It's still expensive, but it is cheaper than before. The obvious benefits for me are that it cleans up your cockpit, it's easy to install, and you don't have a cable or housing that wears out over time/needs replacing every so often. However, I still think I'd buy a cheaper mechanical dropper and save my money for other components. You know, like one of those 3D printed Specialized saddles Wink  

Masjo wrote:
Any chance you could measure/confirm the stack height of the new Reverb to see if what Robot mentioned (stack being measured to top of post, not...

Any chance you could measure/confirm the stack height of the new Reverb to see if what Robot mentioned (stack being measured to top of post, not saddle rails) to be true? It's odd/annoying that all of the seatpost manufacturers have not agreed upon a set of actual umbers and measurements to make on their posts.

I can just about fit a 210mm OneUp on my bike, but it's almost slammed (maybe +5mm). I would love a 200mm Reverb but given the simplifications that it comes with (and if it reviews well) I would consider dropping to a 175mm post to gain access to those benefits.

I now see that they actually have a fitment calculator on their website: Calculator | RockShox

Looks like a 175mm post for me, if I get one. 

4
4/3/2025 10:21am
More details on Reverb AXS - https://www.vitalmtb.com/news/press-release/all-new-rockshox-reverb-axs-dropper-postHighlights- Wireless, integrates with AXS ecosystem- New 'air-over-air' design- New 'ActiveRide' built-in compliance- Two-bolt saddle clamp for round/oval...

More details on Reverb AXS - https://www.vitalmtb.com/news/press-release/all-new-rockshox-reverb-axs-dropper-post

Highlights
- Wireless, integrates with AXS ecosystem
- New 'air-over-air' design
- New 'ActiveRide' built-in compliance
- Two-bolt saddle clamp for round/oval rails
- Uses same AXS battery, charger, and controller
- Travel options: 100mm, 125mm, 150mm, 175mm, 200mm, 225mm, and 250mm
- Seatpost diameter: 30.9mm, 31.6mm, 34.9mm
- MSRP: $ 549 // € 600* // £ 535* // AU$ 945* (*includes VAT)

I've only got 3 rides in on the post ~5hrs ride time. It works great, as it should at the beginning of its life. A few things that have stood out:
- I was reminded how fast the post extends compared to cable droppers. Feels like a pro or con depending on how often you like riding at half-mast, as it can be tough to not get punched by your saddle when trying to stop it from extending.
- There is zero side-to-side play. 
- I ride flats with my feet tight to my cranks and my legs are size medium-large knee pad. The inside of my knee/thigh have occasionally bumped the new battery location. Not really an issue, but something that didn't happen with the previous Reverb
- The 'ActiveRide' feature, where the post has ~10mm of travel when not fully extended, has been useless on an acoustic bike. Not that it's bad, I've just not had a use for it. I played around with pedaling a flat dirt road with the post halfway up (or down?) and it did add some comfort. About as much comfort as you get going from riding with your shock locked out to open. It made me wish there was a way to engage the feature with the post fully extended, such as holding the controller longer. I think I'd use that for chattery, fast climbs when you want a little bit more cushion but need to get full pedal strokes. 
- It's still expensive, but it is cheaper than before. The obvious benefits for me are that it cleans up your cockpit, it's easy to install, and you don't have a cable or housing that wears out over time/needs replacing every so often. However, I still think I'd buy a cheaper mechanical dropper and save my money for other components. You know, like one of those 3D printed Specialized saddles Wink  

Masjo wrote:
Any chance you could measure/confirm the stack height of the new Reverb to see if what Robot mentioned (stack being measured to top of post, not...

Any chance you could measure/confirm the stack height of the new Reverb to see if what Robot mentioned (stack being measured to top of post, not saddle rails) to be true? It's odd/annoying that all of the seatpost manufacturers have not agreed upon a set of actual umbers and measurements to make on their posts.

I can just about fit a 210mm OneUp on my bike, but it's almost slammed (maybe +5mm). I would love a 200mm Reverb but given the simplifications that it comes with (and if it reviews well) I would consider dropping to a 175mm post to gain access to those benefits.

Masjo wrote:

I now see that they actually have a fitment calculator on their website: Calculator | RockShox

Looks like a 175mm post for me, if I get one. 

I dont understand how that works because according to there calc I can fit a 200 dropper but right now I have a 160 one up and its maxed out.

1
dknapton
Posts
54
Joined
11/5/2020
Location
CA
4/3/2025 11:26am

Literally went away from Reverbs cause I hated that play and losing what felt like a cm or two when I sat down on it, and now they’re advertising it as a feature lmao. We’re riding on suspension bikes but now we need suspension in our seat post too? No thanks. 

9
1
Primoz
Posts
4680
Joined
8/1/2009
Location
SI
4/3/2025 12:08pm Edited Date/Time 4/3/2025 12:09pm
bmiliu wrote:

Yet stack height of 237mm at 175 drop is horrid

TEAMROBOT wrote:
This is a wild guess, but I've been looking at the chart on the website and I think that the 237mm stack height you're referencing on...

This is a wild guess, but I've been looking at the chart on the website and I think that the 237mm stack height you're referencing on 175mm drop posts might be referring to the entire top of the seatpost, not just the "collar to saddle rail" stack height that we're used to measuring. For instance, I'm looking at the 250mm seatpost and the total post length is listed as 652.8mm, the minimum exposed height is 314.2mm, and the maximum frame insertion is listed as 338.6mm. 

314.2mm exposed height + 338.6 frame insertion = 652.8mm, which is the entire length of the post, and doesn't leave any room for the tippy top of the seatpost (the portion above the saddle rails). If I had to guess with my eyeballs how tall that portion is, I'd say 12mm and I'd take that much off that stack height measure. So your 175mm post would have a stack height of 225mm.

image 252.png?VersionId=gZ2rOpuZi

 

Still, at 652.8mm long, that 250mm seatpost is longer than the 26" wide handlebars I learned to ride dirt jumps and downhill on, so it's going to require a special combination of frame and rider to accommodate the full 250mm seatpost

 Just for funsies I measured the dimensions on the XL Transition Sentinel I have in for testing and while it looks like I have 400mm of insertion depth, with 302mm exposed from seat collar to saddle rails I'm just short on the stack height to run the 250mm. Santa Cruz doesn't list max insertion depth on my Megatower, but eyeballing it looks like maybe 270mm, plus I run an enormous 347mm of seatpost sticking out of my frame (collar to rail), and that (617mm combined) won't accommodate the 652mm length. So even with my very large 820mm seat height (center of BB to top of saddle), it doesn't look like I'd be able to run the new 250mm Reverb on either of these bikes.

I think it's cool that they still went ahead and offered the 250mm drop post, because it will be a very niche product and they could have easily vetoed it due to smaller projected sale numbers. But some riders will be able to fit it, and they'll be stoked.

Apparently I'm one of the lucky few that could fit it - 445 long seat tube with a 320 mm max insertion and my saddle height is at least 810 (that was on 175 mm cranks, might be even more now with 165 mm cranks, depending on the pedals and all) and the calculator it might fit.

Bird's Aeris line has nice and straight seat tubes almost all the way down to the BB.

But I'll be sticking with my cable actuated 240 mm Oneup.

1
Eae903
Posts
466
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Location
Not Saying., WY, USA
Fantasy
4/3/2025 12:17pm
Primoz wrote:

You need an inert atmosphere to print aluminium... 

Industrial 3D printers fill the print chamber with nitrogen while printing. Titanium also needs inert gas atmosphere when 3d printing.The one at work we use has...

Industrial 3D printers fill the print chamber with nitrogen while printing. Titanium also needs inert gas atmosphere when 3d printing.

The one at work we use has a built in nitrogen generator. 

I mean, that's true of almost all welding now though. The I G in TIG and MIG mean inert gas. Sure you can weld steel without it, like with oxy acetylene welding, it welds better with it. 

3
sethimus
Posts
954
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9/20/2014
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CH
4/3/2025 12:25pm Edited Date/Time 4/3/2025 12:26pm
dolface wrote:

For those who don't wanna click:

Price: $549 USD / €600 EUR / $945 AUS / £535

Correction: Price: $549 USD + whatever the Orange Mussolini is charging up for that day / €600 EUR / $945 AUS / £535

8
4/3/2025 12:33pm
dolface wrote:

For those who don't wanna click:

Price: $549 USD / €600 EUR / $945 AUS / £535

sethimus wrote:

Correction: Price: $549 USD + whatever the Orange Mussolini is charging up for that day / €600 EUR / $945 AUS / £535

and add $150 for the remote

1
4/3/2025 12:53pm
Masjo wrote:

I now see that they actually have a fitment calculator on their website: Calculator | RockShox

Looks like a 175mm post for me, if I get one. 

Why would you trade a 200 OneUp for a 175 mm Reverb? It makes no sense to me that losing 2.5 cm of drop, having a battery I can hit my knees on, and spending $$$ is worth getting rid of a cable. 

22
4/3/2025 1:47pm

Wireless droppers seem like a huge compromise. Longer overall length for the same drop as the market leading cable posts but the advantage of one less cable. I think I will stick to the cable post thanks.

7
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