All Questions
Tagged with derailleur derailleur-rear
116 questions
0
votes
1
answer
77
views
How to properly adjust rear derailleur for Wahoo Kickr?
I have a Merida Escultura 100 connected to a Wahoo Kickr (with the rear wheel removed, of course). I've ridden this combination for over a year and had the derailleur adjusted more or less so there ...
- 1,081
4
votes
0
answers
1k
views
Sram AXS derailleur does not shift
Have you encountered a problem where a rear AXS derailleur stops shifting? Any suggestions?
I bought a mint 2023 GX AXS derailleur on Marketplace, it worked for the first short test ride on a road but ...
- 141
3
votes
2
answers
193
views
Vintage derailleur identification
I have a vintage Shimano derailleur that I'm trying to identify, specifically to figure out which jockey wheel set is compatible as mine badly need replacing. The derailleur is marked "Shimano ...
- 153
0
votes
1
answer
105
views
Which rear derailleur can I put instead of Shimano Acera
My rear derailleur on Cube Aim Race 29" has broken on the holder. Except for this (and prior to the holder breakage) the derailleur has completely stopped working for some reason. It twists into ...
0
votes
1
answer
204
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Chain repeatedly slips on rear cogs to next higher gear...and sometimes back and forth. What to adjust?
EDIT: Just to be clear, everything has worked fine with the bike and the Kickr up until a few weeks ago (that is, for about six months the combo has worked fine). So something's gone a bit out of ...
- 1,081
3
votes
2
answers
1k
views
Replacing a hanger mount derailleur with a direct mount derailleur
I got a low-quality walmart bike for free in decent condition. I am trying to make it rideable. I have given up on the stock derailleur and bought a cheap shimano tourney direct mount derailleur to ...
- 382
4
votes
2
answers
438
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What do I need to change on the rear derailleur to match with the new cassette?
I'm going to the Alps soon and thought that it is a good idea to change my cassette from 11-30 to a 11-32 (with a fresh chain).
I started with replacing the chain, so I used like 3 different 'chain ...
- 819
10
votes
4
answers
3k
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Is it okay for my rear derailleur to be as "compressed" as this when in the lowest gear on the bike?
Recently replaced the cables on this old road bike. When indexing the cable I notice how compressed this derailleur is and the two cogs are almost touching - it certainly doesn't look right to my ...
- 101
2
votes
2
answers
180
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Using Burley Coho XC on road bike with Magic Speed Release axle
I have purchased a Coho XC trailer to use with my 2021 Orbea Avant H-60 (disc brake) bike.
I ordered a Burley Thru-Axle after following the Burley axle guide, but on attempting to install it (without ...
- 235
5
votes
3
answers
1k
views
Can I use a vintage derailleur adapter claw on a modern derailleur
I am restomoding a vintage Hi-C branded Schwinn road bike. There is no derailleur hanger on the drop outs so I am in need of an adapter claw. Can I remove this claw from the old derailleur or is the ...
- 141
3
votes
3
answers
361
views
Rear derailleur looking abnormally contracted – What is wrong?
The derailleur is not extended. The cable tension seems ok. What could be the problem?
- 250
3
votes
2
answers
722
views
Derailleur hanger bent
How can I bent it back
Because its one of those the hanger is a part of the derailleur
If I want to get a new one its the whole derailleur replaced with it
- 33
1
vote
1
answer
95
views
Multiple gears shifted while not pedaling
It happened again, but much worse this time. Someone shifted the front derailleur from 2 to 1 and the rear derailleur from 5 to 9 without pedaling when I was in school. Does this do any significant ...
- 165
5
votes
1
answer
2k
views
Rear derailleur compatibility for friction shifting
I have a mid-1980s road bike with downtube friction shifters. I'd like to install a freewheel with a larger cog (something like 32 or 34T), but my current rear derailleur won't accommodate that. So I'...
- 153
2
votes
2
answers
888
views
Modify/hack rear derailleur cage size
I've listened that it is possible to modify the cage size of a rear derailleur.
For instance reducing a long (SGS) to a medium (GS) or short (SS) cage size.
Is it possible on all brands?
Just shimano?
...
- 376
3
votes
1
answer
1k
views
Recommendation for rear derailleur replacement for a hybrid bike
I recently broke my rear Derailleur in my Super Sport 700c SCHWINN S35408M10DSG-LG 7-speed hybrid bike. I tried the Shimano Altus MTB rear Derailleur but I don't like it as much, it feels a bit harder ...
- 31
2
votes
3
answers
854
views
HELP with derailleur upgrade question
I just bought this Aventon Level ebike https://electricbikereport.com/aventon-level-review/
I was wanting to upgrade the derailleur, but I'm not sure which one to get.
I don't want the entry level/...
- 21
4
votes
1
answer
3k
views
New bike is making rattling noise
Brand new specialized rockhopper 2022 is making rattling noise.
Sample:
Is this normal or could it be a manufacturing defect?
- 51
1
vote
1
answer
634
views
9 speed Shimano Deore derailleur compatibility
Will a 9 speed Shimano Deore derailleur be compatible with my 13-32 tooth freewheel?
- 91
0
votes
1
answer
612
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Can I replace a broken Alivio M410 8speed rear derailleur with Acera T3000 9speed?
Damage to a bike resulted in a broken hanger and a damaged derailleur. I can't get hold of a like-for-like replacement derailleur (Alivio M410). Have seen others state that a 9speed derailleur will ...
- 3
8
votes
1
answer
737
views
Why did Shimano change their rear derailleur design going from a torsion spring to a tension spring inside the parallelogram?
The older Shimano rear derailleurs (pre 7700) use a torsion spring inside the parallelogram. But with the release of the 7700 group they switched to a tension spring which they continued using ever ...
- 733
-3
votes
1
answer
295
views
How to adjust rear derailleur indexing in a mix-and-match drivetrain in the easiest manner?
I have a touring bike where the drivetrain has been built not according to Shimano's instructions. For example, the shift lever is SL-BS64-8 Ultegra 8-speed bar end shifter that according to Shimano's ...
- 21.2k
2
votes
1
answer
1k
views
Will a shimano acera rear derailleur work with a shimano altus cassete?
Got sick of breaking rear axles. Im going to convert to a freehub. Currently i have a shimano acera 9 speed rear derailleur. I found a shimano altus cassete which has a huge 36 tooth sprocket which is ...
7
votes
2
answers
5k
views
Rear derailleur moves forward when pedalling stops
Can you please help me to resolve the issue I am having? When I stop pedaling rear derailleur moves forward by inertia. This happen almost every time i stop pedaling and start coasting. I have a video ...
- 71
3
votes
2
answers
604
views
What kind of Rear derailleur do i have and what RD should I buy as a replacement?
I have an old mountain bike (21 speed) and I'm not sure what kind of rear derailleur i have. So far the performance is still okay but I was planning to replace it with my spare RD (SunRun Index) but ...
- 31
1
vote
1
answer
1k
views
Will Shimano Acera 8 speed derailleur work on 6 speed freewheel?
I want to get a higher quality rear derailleur from the Tourney which I have right now(it broke). I want a Shimano Acera RD-M360-SGS. The problem is that its 8 speed. Will it work on my 6 speed ...
4
votes
2
answers
3k
views
Rear derailleur max capacity exceeded?
My MTB is a Lapierre X-Flow 512 2012. It has a Shimano RD-M980-SGS 10v rear derailleur which has a total capacity of 41t (see official specs). But it comes with a 11-36 cassette and a 24-42 crankset (...
0
votes
1
answer
1k
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What thread does the b-screw on a shimano rd-6400/6401 have?
What thread does the b-screw on a shimano rd-6401 have?
I need to recut the thread but am not entirely sure if it's an M4 fine pitch or something else.
- 733
2
votes
3
answers
846
views
Can an 8 speed chain fit inside an 11 speed Shimano 105 (RD-R7000 ) rear derailleur?
I am using downtube friction shifters, I know my shifter's pull of 28.5 mm multiplied by the Shimano 105 RD's pull ratio of 1.4 gives me 40mm of travel, enough to traverse the entire width of my 35 ...
- 163
0
votes
2
answers
251
views
8 speed flat bar set up with Dura Ace RD-7700 or new Claris RD-2400
I'm buying a new drivetrain (cranks, cassette, chain) for my flatbar commuter that was mostly built of parts. I currently have a Dura Ace 7700 short cage derailleur on it, I got it from a friend a ...
- 11
2
votes
0
answers
432
views
Using 11-36t 9 speed derailleur with 11-40t 9 speed cassette
So I've got the shimano altus rd-m2000 and it says that it only supports 11-36t. However, I've seen people on forums say that it's possible with this derailleur. Even it I was wondering if with a ...
- 21
3
votes
3
answers
1k
views
Shift lever tight when cable clamped in derailleur, adjustments seem futile
I have a 2020 Giant Trance 2 I purchased new at the beginning of June 2020. Recently I had to replace my shifter cable (I broke a ferrule and the cable was fraying and very short, so I figured the ...
- 133
3
votes
2
answers
777
views
Can someone help me identify this old Shimano derailleur?
I want to poke around online a bit and see if I can find anything out about it. It's a long cage, on an old 18 speed Univega MTB. Thanks.
2
votes
1
answer
503
views
Can I change my derailleur without changing my shifter?
I have Shimano V-Brake 8-speed shifters on my bike. These have the brakes and the shifter in one component. I'd like to change my derailleur can I put in a newer 8 speed Shimano derailleur that will ...
- 23
0
votes
1
answer
1k
views
Direct mount vs. hanger derailleur
Currently repairing a bike that I got off the road for free years ago. Around three years ago, a stuck link caused a chain jam while pedaling at high speed, causing the metal around the b-knuckle on ...
3
votes
2
answers
5k
views
Can I use Shimano 105 rear derailleur from 11-speed bike with 10-speed Tiagra shifters?
I have a 10-speed 2013 Specialized Allez Elite with Tiagra componentry (and an 11/28 105 cassette) and would like to install my old Shimano 105 rear derailleur in the back to replace the Tiagra one. ...
- 163
1
vote
1
answer
393
views
How do I determine the "length" of this derailleur?
What length is this derailleur please. Cannot determine if its a short, medium or long.
- 11
2
votes
1
answer
2k
views
Can I reorient my dérailleur so the top jockey doesn't hit the cassette?
I was running a RD-M7000 dérailleur on my Scott E-Genius 730 and I recently received some good advice here that the Deore RD-M6000 is a drop-in replacement. I have now purchased and fitted that, but ...
- 215
3
votes
3
answers
2k
views
Is my Shimano Deore SLX dérailleur a medium or long cage?
I have a Scott E-Genius 730 Plus and would like to replace the rear dérailleur (the probable cause of difficulties described in my last question). It's a Shimano Deore SLX Dyna-sys unit, it's for a 10-...
- 215
3
votes
2
answers
8k
views
Bottom jockey wheel on rear derailleur keeps skipping chain
Basically the angle between the bottom and top wheels is too great causing the chain to skip to the outside of the bottom wheel under force. If I use the higher adjustment screw on the shimano ...
- 31
0
votes
2
answers
363
views
Why does my Shimano Deore SLX dérailleur not rotate into the expected (vertical) position?
I have a Scott E-Genius 730 Plus mountain bike (around three years old). I had a chain snap recently, so I have replaced the rear 10-speed cassette, and am now trying to route a new chain correctly. I ...
- 215
3
votes
1
answer
919
views
Chain pops off guide pulley when pedaling
I re-installed new tires for the first time yesterday. Now I'm having problems with my rear derailleur. The chain keeps popping off the derailleur guide pulley when I pedal forward. I can re-seat it ...
- 131
1
vote
1
answer
2k
views
Sprocket touching the biggest cog no matter B screw...how do I fix?
My Shimano rear derailleur was destroyed, for some reason got into the rear wheel, so I had to buy a new one. Hanger was a little misaligned but I think I fixed it.
I bought the new derailleur, ...
3
votes
2
answers
952
views
Is it possible to move my rear derailleur so that it does not touch the chain?
My chain is touching part of the rear derailleur. Is it possible to move the derailleur so the chain does not touch it?
1
vote
1
answer
63
views
Jamis Commuter 4 conversion to derailleur geared
I'm trying to convert my Jamis Commuter bike with an IGH to a 10 speed derailleur setup.
I've got a bit stuck on the project with the rear derailleur. Here's what I want to verify. Looking at the ...
- 13
3
votes
3
answers
550
views
Bike derailleur, keeps flicking back when I pedal
I have changed the derailleur on my daughters back, bought like for like.
Now fitted.
When I try to pedal the derailleur, it flicks backwards and the bike won’t pedal forward, it remains stuck.
...
- 31
2
votes
1
answer
240
views
Seating the rear derailleur cable housing
Unpacked road bike. Assembly is simple enough, except that the rear derailleur cable housing is not in its groove (I'm sure there is a specific term).
Here is a picture.
No matter how much I tug (...
- 10.3k
1
vote
3
answers
192
views
My bike shifting won’t surpass 6
I own a Scott Aspect 740. On the shifter it says it is on gear 7, 8 or 9 however in reality on the rear derailleur the chain is only on 6 and won’t go past this.
I’m looking for a fix as it is very ...
- 11
2
votes
2
answers
2k
views
Vintage bike, new chain
I've refurbished a vintage bike and I switched the old derailleur with a new medium cage tourney derailleur, the chain is also new and is 114 links long, which should be fine since me largest cog on ...
- 31
3
votes
3
answers
345
views
Cage Length (Rear Derallieur) and Total Capacity
My drivetrain required total capacity is 14.
(folding bicycle Dahon Eco C6, 14-28 rear, 1x front)
The rear derailleur (Shimano TZ50, which I purchased), has total capacity = 34 and a long cage. Are ...
- 1,012