Journey to the AXS of evil.....

[yinzerniner]

Decided to pick one of these up on a whim, and will post thoughts, pics, measurements, and other observations.

If anyone has a question please let me know and I'll do my best to answer.

First, the crankset - 172.5 with 46T narrow wide 1x
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Weights
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Comparison pics with 42t Force X-Sync NW Chainring

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Measurements:
-Inner axle width is ~102mm from inside to inside of the crankarms when tightened down, and has a roughly 6mm thick preload adjuster. For comparison, a GXP Etap crankset I have lying around has 96mm from inside to inside of the crankarms with no preload adjuster. So the DUB cranksets look to work anywhere a GXP crankset used to, and possibly in other fitments if the preload adjuster is removed

Observations:
The crankset looks really nice out of the box, but I expect it to dullen quite quickly after riding. It uses the new 8 bolt interface
The chainring teeth are MUCH more profiled than the previous-gen X-Sync NW rings. Don't know why this is, maybe it improves the performance, needed to be done for the different chain specs, to look cool? Who knows.

Second the cassette - 10-33

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Comparison shot vs 11-25 Dura Ace 9100 cassette
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Weight
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Measurements:
~1.5mm per cog thickness, ~2.1mm space between cogs, so roughly 3.6mm cassette pitch. I believe 11s SRAM is 1.6mm cog thickness with 2.14mm spacing for a 3.74mm cog thickness.
Observations:
The cassette is stupid light and a marvel to look at. Who knows how well it'll hold up in the long run, but new it's like holding a piece of jewelry.
While some other 12s chains and maybe even some 11s chains might be able to "work" I'm not sure how well they will shift/retain/last.

And finally, some chain measurements:
Roller diameter: 7.9mm. I measured a SRAM Red22 chain roller to be 7.7mm so the roller is in fact noticeably larger
Outer width: 4.95mm
Outer plate thickness: .7mm at mid point, ~.84mm at roller. The outer plat is concave in shape, where the midpoint is skinnier than the ends which connect to the pin
Inner plate thicness: .5mm. Really, really thin. Almost looks like two pieces of tin foil folder over.
Gap between outer plates: ~3.4-3.5mm. Tiny bit of flex here
Gap between inner plates: ~2.2-2.3mm. Tiny bit of flex here
Observations:
There's a lot less "play" in this chain than the Red22 chain I measured it against. The flex of the inner and outer plates is much less, and the tolerances seem to be tighter. The rollers are noticeably wider though - while I think the chain should be able to "work" on existing 11s and 12s cassettes and chainrings I'm not sure how well they will shift/retain/last.

Later: Shifters and Derailleurs

[Andy sti]

I support the AXS.

Was so pretty when it was new...

[Clean39T]

Originally Posted by Andy sti

I support the AXS.



Was so pretty when it was new...

Geez, it's almost like you actually ride your bike or something

Sent from my Pixel 2 XL using Tapatalk

[teleguy57]

Now that's a well-loved bike!

[FlashUNC]

eTap AXS is awesome. Well loved eTap AXS is even awesomer.

[Mark McM]

Originally Posted by yinzerniner

For comparison, a GXP Etap crankset I have lying around has 96mm from inside to inside of the crankarms with no preload adjuster. So the DUB cranksets look to work anywhere a GXP crankset used to, and possibly in other fitments if the preload adjuster is removed

Except, apparently, for Trek frames that use BB90/95 bottom bracket shells with press-fit bearings. But it has been rumored that Trek will be switching from BB90/95 (press-fit) to T47 (threaded) bottom bracket shells, so that may become moot.

[FlashUNC]

Originally Posted by Mark McM

Except, apparently, for Trek frames that use BB90/95 bottom bracket shells with press-fit bearings. But it has been rumored that Trek will be switching from BB90/95 (press-fit) to T47 (threaded) bottom bracket shells, so that may become moot.

https://sram.zendesk.com/hc/en-us/ar...cket-standard-

[yinzerniner]

Originally Posted by FlashUNC

https://sram.zendesk.com/hc/en-us/ar...cket-standard-

That's just affirming what Mark McM said. They make GXP spindle Red ETAP AXS crankarms specifically to work with a few legacy BB standards.

A video from Glory Cycles goes over when you'd want to opt for the GXP over the Dub

https://www.youtube.com/watch?v=2IgXrWuDwxI

[Brusselsprouts]

Originally Posted by Andy sti

I support the AXS.



Was so pretty when it was new...

It adds character! The first nick's are the most painful, but once the battlescars are won the riding is so much more enjoyable without having to worry about riding around a pristine piece of art

Sent from my Pixel 3a using Tapatalk

[Andy sti]

Originally Posted by Brusselsprouts

It adds character! The first nick's are the most painful, but once the battlescars are won the riding is so much more enjoyable without having to worry about riding around a pristine piece of art

Truth!

[quickfeet]

Originally Posted by Mark McM

Except, apparently, for Trek frames that use BB90/95 bottom bracket shells with press-fit bearings. But it has been rumored that Trek will be switching from BB90/95 (press-fit) to T47 (threaded) bottom bracket shells, so that may become moot.

Sram made custom gxp axs cranks for Trek. Their race team is sponsored by SRAM. They are available for consumer purchase.