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Discussion starter · #21 ·
To follow up on my post about derailleur issues…

The derailleur was warrantied. It was out of alignment from the factory and there was no fix. The new derailleur was installed (by me) and has been flawless. I am now at micro adjust setting 5 and everything is working as intended. The shop that warrantied the derailleur sent it back to sram and they were very interested in what caused the issue. We should hear back from them at some point.

I have since installed another transmission group (XO) level on a 2022 stumpjumper pro S3 frame. It is running perfectly in trim position 5 as well.

Sram did an incredible job with a quick warranty turn around on the derailleur and are eager to review the issue once they have it back.
 
Interesting. Thanks for the follow up. One thing that’s happened to me was that I think I sheared a shift ramp off my XX SL cassette on the 44t cog. Currently discussing possible warranty w the place I ordered the kit from (Tree Fort).
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Running Xx-SL on my '22 stumpjumper s-works s4 w/ eewings, one-up 0 offset switch DM 32t (disclaimer, likely, slightly increased chain wear). This is verified via caliper of closer to 56mm chain line, I dropped the chain guide for now but may build a 3mm spacer or triple washers, the clutch is so strong I'm not sure I need the chain guide. Im going to check a transmission stumpy at the specialized store with a caliper to validate, hard to accurate call 55mm vs 56 mm, seems closer to 56mm.

My micro adjust is at 7 and shifting feels great. I had previously ridden a couple rides using a 53.5mm chain line and it was good but wanted it optimal as I could get until a solid 0 degree, 55mm chainline, sram 3-bolt, flat top ring was available.
 
Running Xx-SL on my '22 stumpjumper s-works s4 w/ eewings, one-up 0 offset switch DM 32t (disclaimer, likely, slightly increased chain wear). This is verified via caliper of 55mm chainline, I drop the chain guide for now but may build a 3mm spacer or triple washers, the clutch is so strong I'm not sure I need the chain guide.

My micro adjust is at 7 and shifting feels great. I had previously ridden a couple rides using a 53.5mm chainline and it was good but wanted it optimal as I could get until a solid 0 degree, 55mm chainline, sram 3-bolt, flat top ring was available.
Why do you think the chain wear will be increased with the OneUp chainring?
 
Why do you think the chain wear will be increased with the OneUp chainring?
Cause they said so (oneUp). I even measured before that, the profile is slightly off by like 0.5mm if i remember correctly, i measured new chains eagle xx1 and xx-sl. The flat top is slightly wider from pin to pin,
 
I've been trying to set up a T-type on a mullet Stumpjumper S3 with a Hunt wheelset. I was lucky enough to have help from SRAM's folk during Crankworx at Whistler and they also weren't able to set it up properly. We think it might be a case of the cassette sitting too much toward the outer side such that not even with the micro-adjustment on position 14 I can get the chain to sit properly in its corresponding cog. Has anyone else experienced something similar?
 
Interesting. Thanks for the follow up. One thing that’s happened to me was that I think I sheared a shift ramp off my XX SL cassette on the 44t cog. Currently discussing possible warranty w the place I ordered the kit from (Tree Fort).
Well, warranty won't really help. This is just how an alu sprocket will look like after a while when used with a chain made from steel. Harder material bites softer material. Even a $600 cassette cannot change that. Alu sprockets don't last long. Think of them a race parts but not suitable for everyday use.
 
Well, warranty won't really help. This is just how an alu sprocket will look like after a while when used with a chain made from steel. Harder material bites softer material. Even a $600 cassette cannot change that. Alu sprockets don't last long. Think of them a race parts but not suitable for everyday use.
SRAM warrantied it. New one after about 10x more rides on it looks to be fairing much better
 
2021 SWORKS SJ S5
XXSL 34T Chainring
Micro adjust is at 3

I had the going from 3rd to 2nd in the bike stand and out on the trail today. It did it one time and seem to sort itself out. Other than that the system has been great.

I've had most of the digital systems
DI2 - Fastest and smoothest of all just not under load
Sram force road - Solid system all the way around
Sram AXS - Good in all areas but not as smooth or as fast as DI2 and crunchy under load as well
Sram transmission - Smooth under load and in general, fast response is a moot point the way it's designed to shift.

Image
 
To follow up on my post about derailleur issues…

The derailleur was warrantied. It was out of alignment from the factory and there was no fix. The new derailleur was installed (by me) and has been flawless. I am now at micro adjust setting 5 and everything is working as intended. The shop that warrantied the derailleur sent it back to sram and they were very interested in what caused the issue. We should hear back from them at some point.

I have since installed another transmission group (XO) level on a 2022 stumpjumper pro S3 frame. It is running perfectly in trim position 5 as well.

Sram did an incredible job with a quick warranty turnaround on the derailleur and are eager to review the issue once they have it back.
Sorry for the thread necro but i'm thinking about buying a previous-generation epic evo like yours in the sales and if I do, I would like to fit transmission as I love the way it shifts under load.

Is there any reason why only the new epic evo is listed on the compatibility website: Bike Finder | SRAM ?
Or is it just not well maintained and the previous gen epic evo is compatible as well?
 
Sorry for the thread necro but i'm thinking about buying a previous-generation epic evo like yours in the sales and if I do, I would like to fit transmission as I love the way it shifts under load.

Is there any reason why only the new epic evo is listed on the compatibility website: Bike Finder | SRAM ?
Or is it just not well maintained and the previous gen epic evo is compatible as well?
The previous 2021 - 2023 Specialized Epic Evo is on the SRAM Transmission setup page and is fully compatible.

You need to scroll down the list and it is there called “Epic Evo - 2021”. :)


The SRAM page you’re looking at links to the Specialized website and only lists current models, not the previous older discontinued bikes.
 
The previous 2021 - 2023 Specialized Epic Evo is on the SRAM Transmission setup page and is fully compatible.

You need to scroll down the list and it is there called “Epic Evo - 2021”. :)


The SRAM page you’re looking at links to the Specialized website and only lists current models, not the previous older discontinued bikes.
Awesome! Thank you!
 
Just got a new stumpjumper and transmission XO drivetrain and eewings plus a Praxis 0 offset ring for a 55 chainlink and it all works fine but I can feel the cage moving when going over roots and rough terrain plus a constant rattling sound that might be the chain? Not sure yet. It's making the new bike hard to want to ride. Had my shop guy, who I trust, go over it and he talked to SRAM tech guy and improved the cage movement just slightly but the rattling noise is almost constant on a trail ride. Anyone have this issue?
 
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