Rear derailleur issues

sptimmy43

Well-Known Member
#1
I am having an iissue with my rear derailleur. The bike is 1x11 with an SLX derailleur, XT shifter and a e*13 9-46t cassette. The chain is nearly brand new as I just replaced it. I noticed that recently my shift quality was deteriorating a bit and certain gears were a bit noisy (middle of the cassette) and going from 11th to 10th (small/hard gears) and vice versa is not reliable. Sometimes the bike shifts, sometimes it doesn't. It goes up and down the rest of the cassette smooth as silk. I am pretty meticulous with keeping a clean bike and a thorough cleaning and lube job didn't take care of the issue. At first I thought the hanger was bent as the mis-shifts only happen on 2 gears. I replaced it with a spare I had as I don't have a derailleur hanger alignment tool. The new hanger made no improvement. So I replaced the inner and outer shift cable (curse the bastard who invented inner cable routing, by the way). The new cable did not fix anything, either. I am thinking the derailleur itself must be damaged. It visually looks fine and I assume the original hanger was ok but something isn't right.

Anyway, I'd appreciate any insight.
 

michael.su

JORBA co-VP
JORBA.ORG
#3
I am having an iissue with my rear derailleur. The bike is 1x11 with an SLX derailleur, XT shifter and a e*13 9-46t cassette. The chain is nearly brand new as I just replaced it. I noticed that recently my shift quality was deteriorating a bit and certain gears were a bit noisy (middle of the cassette) and going from 11th to 10th (small/hard gears) and vice versa is not reliable. Sometimes the bike shifts, sometimes it doesn't. It goes up and down the rest of the cassette smooth as silk. I am pretty meticulous with keeping a clean bike and a thorough cleaning and lube job didn't take care of the issue. At first I thought the hanger was bent as the mis-shifts only happen on 2 gears. I replaced it with a spare I had as I don't have a derailleur hanger alignment tool. The new hanger made no improvement. So I replaced the inner and outer shift cable (curse the bastard who invented inner cable routing, by the way). The new cable did not fix anything, either. I am thinking the derailleur itself must be damaged. It visually looks fine and I assume the original hanger was ok but something isn't right.

Anyway, I'd appreciate any insight.
How many miles are on the cassette?
Maybe it's worn/bent etc?

The derailleur cage could be a little tweaked. I usually eyeball the chain line and adjust accordingly.

Bolting a new hanger on doesn't guarantee that it's aligned. Best to check with an alignment tool.
 

sptimmy43

Well-Known Member
#6
How many miles are on the cassette?
Maybe it's worn/bent etc?

The derailleur cage could be a little tweaked. I usually eyeball the chain line and adjust accordingly.

Bolting a new hanger on doesn't guarantee that it's aligned. Best to check with an alignment tool.
The cassette has 488 miles on it. t doesn't seem to be excessively worn or bent. The chainline looks good by my eye.

I have heard that brand new derailleur hangers are not true something like 25% of the time. I may need to hit up @RSabarese or pony up for the DAG tool myself.
a) fire
2) new bike
iii) LBS

that's all I got.....
a) Pretty sure I didn't have a fire...but maybe I should.:mad:
2) Unless I have a fire and get some insurance $$$ a new bike will result in divorce at this particular moment.:eek:
iii) Not sure how many bike shops want me to roll in with my YT...again, fire may help.:p
 

sptimmy43

Well-Known Member
#10
The bike has an XD free hub body on it.

YT really sold the Frankenstein e*13/Shimano drive train as having more range, being more reliable, and being easier to adjust than Eagle and I drank the Kool-Aid but since I already have an XD free hub I will probably just grab some GX Eagle components if this persists or when cassette wears out.
 

Juggernaut

Master of the Metaphor
#11
How stretched was the old chain? I’m guessing it was pretty worn and the couple of troublesome gears are the ones you use the most..... maybe time for a new cassette. Assuming the free hub body isn’t a little loose that is.
 

jimvreeland

Shop: Hilltop Bicycles
Shop Keep
#12
The bike has an XD free hub body on it.

YT really sold the Frankenstein e*13/Shimano drive train as having more range, being more reliable, and being easier to adjust than Eagle and I drank the Kool-Aid but since I already have an XD free hub I will probably just grab some GX Eagle components if this persists or when cassette wears out.
Someone I know (me) just happens to have a GX Eagle group sitting around.
 

sptimmy43

Well-Known Member
#13
How stretched was the old chain? I’m guessing it was pretty worn and the couple of troublesome gears are the ones you use the most..... maybe time for a new cassette. Assuming the free hub body isn’t a little loose that is.
I replaced the chain right at .5% stretch. I am pretty sure it isn't cassette wear as this is occurring on the 9 and 10 tooth cogs. I wish I could say I use those the most but the truth is I am just way too slow.
Someone I know (me) just happens to have a GX Eagle group sitting around.
I saw that you took the GX Eagle off your bike in your thread. What was the problem? Derailleur cage was too long?
 

terrabike01

Well-Known Member
#14
I've been seeing issues with those E13 cassettes. The gap where the 2 halves come together have inconsistent tolerance and the derailleur skips around on 1 half or the other. Replace with a Sram.
I think I might have to 2nd this! Rode the bike today and it's still skipping around. But feathering the shifter seems to help a lot!
 

teabagger11

Well-Known Member
#15
had same set up on my krampus the only thing that fixed it was getting a new cassette, i'm assuming with the tight cog spacing it doesn't take much to cause shifting issues
 

sptimmy43

Well-Known Member
#16
So it turns out the derailleur itself was bent. I ordered a new one for giggles since that was way cheaper than a new cassette or group set at this point and the cage on the old one was way out of whack compared to the new one. I haven’t looked at it much closer to see what exactly is bent but a new one fixed the problem entirely. I now have silky smooth shifting across all 11 gears.
 

terrabike01

Well-Known Member
#17
So it turns out the derailleur itself was bent. I ordered a new one for giggles since that was way cheaper than a new cassette or group set at this point and the cage on the old one was way out of whack compared to the new one. I haven’t looked at it much closer to see what exactly is bent but a new one fixed the problem entirely. I now have silky smooth shifting across all 11 gears.
Good to hear everything worked out. My bike with the E13 still isn't 100% right. I'll have to check the derailler. It may be slightly bent. Its taken a few good hits!