Go Back  Bike Forums > Bike Forums > Bicycle Mechanics
Reload this Page >

Replacing SRAM GX Eagle 12-speed derailleur

Search
Notices
Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

Replacing SRAM GX Eagle 12-speed derailleur

Thread Tools
 
Search this Thread
 
Old 03-01-19, 05:22 PM
  #1  
Cyclist0108
Occam's Rotor
Thread Starter
 
Join Date: Jul 2013
Posts: 7,248
Mentioned: 61 Post(s)
Tagged: 0 Thread(s)
Quoted: 2366 Post(s)
Liked 2,331 Times in 1,164 Posts
Replacing SRAM GX Eagle 12-speed derailleur

My kid has busted his second SRAM GX Eagle 12-speed derailleur in under a year. I don't want to buy another one.

Would it be possible to replace this with (for example) a Shimano XT long-cage derailleur, or a Box 2 "extra wide" derailleur (both can cope with 50T) and keep the SRAM 12-speed shifter? Both are rated for 11-speed, but I assume a derailleur is agnostic, as long as the chain fits.

He has a 0-50 12-speed SRAM cassette currently, and ideally we would like to get a drop-in replacement without having to change the cassette or shifter.

(This is from a Canyon Spectral 8, 2018 model).
Cyclist0108 is offline  
Old 03-01-19, 05:44 PM
  #2  
trailangel
Senior Member
 
trailangel's Avatar
 
Join Date: Feb 2014
Location: Pasadena, CA
Posts: 4,848

Bikes: Schwinn Varsity

Mentioned: 22 Post(s)
Tagged: 0 Thread(s)
Quoted: 1931 Post(s)
Liked 742 Times in 422 Posts
Make you kid buy the new DR..... that way he won't break it so fast.
trailangel is offline  
Old 03-01-19, 09:52 PM
  #3  
Cyclist0108
Occam's Rotor
Thread Starter
 
Join Date: Jul 2013
Posts: 7,248
Mentioned: 61 Post(s)
Tagged: 0 Thread(s)
Quoted: 2366 Post(s)
Liked 2,331 Times in 1,164 Posts
He earns his own money, not that it is any of your business. Even though you are on my ignore list, I tried to give you the benefit of the doubt. Clearly that is a mistake.
Cyclist0108 is offline  
Old 03-01-19, 11:40 PM
  #4  
AnkleWork
Senior Member
 
Join Date: Jan 2013
Location: Llano Estacado
Posts: 3,702

Bikes: old clunker

Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
Quoted: 684 Post(s)
Likes: 0
Liked 105 Times in 83 Posts
Yeah, when I post a request for opinions in a public forum I just hate it when people offer their actual opinions. Can't respondents just tell me what I want to hear and/or some tangents all about themselves, in keeping with the traditions of this forum?
AnkleWork is offline  
Old 03-02-19, 01:33 AM
  #5  
jimc101
Senior Member
 
Join Date: Oct 2007
Location: West Yorkshire, United Kingdom
Posts: 5,773
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 454 Post(s)
Liked 104 Times in 87 Posts
The bike has a SRAM groupset, you need to buy a SRAM RD, if you want cheaper, buy an NX (it's a little much cheaper), either way, if your running any MTB, esp with the latest 12 speed, it will cost you in broken parts, and there is little to no compatibility between brands for deraileurs now.

If you want to replace the shifter & cassette, you would need to add a rear wheel to that, as the freehubs are not compatible.
jimc101 is offline  
Old 03-02-19, 06:41 AM
  #6  
dsaul
Senior Member
 
Join Date: Jan 2013
Location: South Jersey
Posts: 2,272
Mentioned: 18 Post(s)
Tagged: 0 Thread(s)
Quoted: 716 Post(s)
Liked 807 Times in 479 Posts
It has to be a SRAM X-actuation derailleur. The only ones that will work with the 50t cassette are the Eagle versions. The 1x Horizon derailleurs have a 42t max. As has already been stated, the NX version is slightly less than the GX.
dsaul is offline  
Old 03-02-19, 11:56 AM
  #7  
Cyclist0108
Occam's Rotor
Thread Starter
 
Join Date: Jul 2013
Posts: 7,248
Mentioned: 61 Post(s)
Tagged: 0 Thread(s)
Quoted: 2366 Post(s)
Liked 2,331 Times in 1,164 Posts
Originally Posted by AnkleWork
Yeah, when I post a request for opinions in a public forum I just hate it when people offer their actual opinions. Can't respondents just tell me what I want to hear and/or some tangents all about themselves, in keeping with the traditions of this forum?
So how does his opinion about the Kennedy assassination answer a question about interchangeability of derailleurs?

Not all opinions are equally relevant, snowflake.
Cyclist0108 is offline  
Old 03-02-19, 11:57 AM
  #8  
Cyclist0108
Occam's Rotor
Thread Starter
 
Join Date: Jul 2013
Posts: 7,248
Mentioned: 61 Post(s)
Tagged: 0 Thread(s)
Quoted: 2366 Post(s)
Liked 2,331 Times in 1,164 Posts
Originally Posted by dsaul
It has to be a SRAM X-actuation derailleur. The only ones that will work with the 50t cassette are the Eagle versions. The 1x Horizon derailleurs have a 42t max. As has already been stated, the NX version is slightly less than the GX.
Thanks!
Cyclist0108 is offline  
Old 03-02-19, 11:58 AM
  #9  
Cyclist0108
Occam's Rotor
Thread Starter
 
Join Date: Jul 2013
Posts: 7,248
Mentioned: 61 Post(s)
Tagged: 0 Thread(s)
Quoted: 2366 Post(s)
Liked 2,331 Times in 1,164 Posts
Originally Posted by jimc101
The bike has a SRAM groupset, you need to buy a SRAM RD, if you want cheaper, buy an NX (it's a little much cheaper), either way, if your running any MTB, esp with the latest 12 speed, it will cost you in broken parts, and there is little to no compatibility between brands for deraileurs now.

If you want to replace the shifter & cassette, you would need to add a rear wheel to that, as the freehubs are not compatible.
Thanks!
Cyclist0108 is offline  
Old 03-02-19, 12:08 PM
  #10  
Darth Lefty 
Disco Infiltrator
 
Darth Lefty's Avatar
 
Join Date: May 2013
Location: Folsom CA
Posts: 13,464

Bikes: Stormchaser, Paramount, Tilt, Samba tandem

Mentioned: 72 Post(s)
Tagged: 0 Thread(s)
Quoted: 3133 Post(s)
Liked 2,116 Times in 1,379 Posts
The NX derailleur is heavier because it’s made with more steel and less aluminum. Not sure if that relates to your son’s breakages. I’ve read it’s e-bike rated, this from a tandemist who was skeptical about the strength of the higher level cassette. I’d poke around a little more but I’m having a hard time with their website and my iPhone right now.
Darth Lefty is offline  
Old 03-02-19, 12:31 PM
  #11  
Cyclist0108
Occam's Rotor
Thread Starter
 
Join Date: Jul 2013
Posts: 7,248
Mentioned: 61 Post(s)
Tagged: 0 Thread(s)
Quoted: 2366 Post(s)
Liked 2,331 Times in 1,164 Posts
Originally Posted by Darth Lefty
The NX derailleur is heavier because it’s made with more steel and less aluminum. Not sure if that relates to your son’s breakages. I’ve read it’s e-bike rated, this from a tandemist who was skeptical about the strength of the higher level cassette. I’d poke around a little more but I’m having a hard time with their website and my iPhone right now.
OK, that is good to know. Unless the XT swap-out experiment goes really well, that seems like the path of least expense.

I'm no longer entirely convinced that the current one is broken, but in the case of the first one, a stick got tossed up into it, and twisted the cage, which we were never able to re-align properly. This is probably due to the softer aluminum, so a "downgrade" to NX might actually improve it (as long as the NX is otherwise as good). The tight tolerances for 12-speed magnify these issues and imperfections, and the bent (and subsequently straightened) derailleur never shifted well.
Cyclist0108 is offline  
Old 03-02-19, 01:49 PM
  #12  
jimc101
Senior Member
 
Join Date: Oct 2007
Location: West Yorkshire, United Kingdom
Posts: 5,773
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 454 Post(s)
Liked 104 Times in 87 Posts
Originally Posted by wgscott
OK, that is good to know. Unless the XT swap-out experiment goes really well, that seems like the path of least expense.

I'm no longer entirely convinced that the current one is broken, but in the case of the first one, a stick got tossed up into it, and twisted the cage, which we were never able to re-align properly. This is probably due to the softer aluminum, so a "downgrade" to NX might actually improve it (as long as the NX is otherwise as good). The tight tolerances for 12-speed magnify these issues and imperfections, and the bent (and subsequently straightened) derailleur never shifted well.
What about the (replaceable) hanger? these are usually sacrificial, and should bend before the RD does, have you looked to see what condition of it is?
jimc101 is offline  
Old 03-02-19, 02:50 PM
  #13  
Cyclist0108
Occam's Rotor
Thread Starter
 
Join Date: Jul 2013
Posts: 7,248
Mentioned: 61 Post(s)
Tagged: 0 Thread(s)
Quoted: 2366 Post(s)
Liked 2,331 Times in 1,164 Posts
According to my Abbey Tools HAG, it is ok.
Cyclist0108 is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
gregf83
Bicycle Mechanics
2
11-01-15 10:45 PM
mdilthey
Bicycle Mechanics
4
11-05-14 06:03 PM
tcoffey
Bicycle Mechanics
9
02-20-14 10:56 AM
tylsteve
Bicycle Mechanics
1
01-15-11 03:35 PM

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service -

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.