Questions tagged [derailleur-rear]

Questions referring to the derailluer responsible for moving the chain along the cassette

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9 views

Can i use claris R2000 rd on 14-34T mega range sprocket?

I have sprocket 14-34T with mega range. I planned to change my old (maybe 1990's) shimano tourney rd to shimano claris R2000 medium cage. Some of my local bike shop said that i can replace with claris ...
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1answer
58 views

Rear derailleur movement where it is bolted to hanger

I've checked the hanger and that seems solid. There is some movement/wobble in the derailleur at the bolt that connects it to the hanger, like it's not quite tight enough even though it's tightened as ...
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3answers
241 views

Can I 'upgrade' a 9 speed Tiagra RD to Sora to lower my gears?

My girlfriend has an oldish Cannondale CAAD8 bike with Tiagra 9 speed triple. The rear derailleur is the RD-4500 GS with a 12-26 cassette. The front is a 50-39-30. She'd like to get a lower bottom ...
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122 views

Shimano 105 Rear Derailleur Housing Frayed

While adjusting my rear shifting cables I noticed that the small piece of housing, which emerges from where the barrel adjuster is threaded in, was broken. Is it necessary to replace this or is it ...
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3answers
146 views

How to know and which to use?

I have these shifters and derailleurs: front shifter Shimano ST-EF41, 3spd front derailleur Shimano FD-TZ500, 3spd rear shifter Shimano ST-EF41, 7spd rear derailleur Shimano RD-TZ31, 7spd I want to ...
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2answers
117 views

Overtightned the rear derailleur cable clamp. It is now blocked

I have over-tightened the bolt on the rear derailleur clamp (Shimano tourney). There is no resistance on the bolt, when tightening it or untightening but the clamp does not move anymore. I don't want ...
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3answers
93 views

Rear derailleur doesn't go to smallest cog

I'm sure it is a simple fix to this, but please bear with me. I have recently swapped my rear wheel on my bike (with an identical one, keeping the same cassette). Upon putting it back in, I noticed ...
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4answers
465 views

Swapping wheels and cassettes with Shimano GRX 600/800

I am in the market for a gravel bike. I plan on getting a second set of wheels for road rides. This bike will most likely have Shimano GRX 600 or 800 2x and an 11-34 cassette. Assuming the rear ...
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1answer
70 views

Derailleur indexing problem - doesn't change from 8 to 7 but skips form 3 to 1

I just fitted a new 8 speed Shimano cassette (CS-HG41-8) and chain (CN-HG40) to my new turbo trainer (Elite Suito). Answers to my previous question suggest that this should work OK (see Can I put a 8 ...
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2answers
250 views

Problem with cassette and derailleur

I am a newbie and this is probably a simple question. I have a new Trek Domane 2. It is the 2020 model. From what I can tell on the Trek website, it has a Shimano Claris R2000, 8 speed shifter. Based ...
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1answer
74 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 ...
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2answers
156 views

Resealing bearings in chinese OSPW

I am currently rebuilding an old steel bike with some modern parts and am searching for a OSPW because it looks quite cool. However a "real" one from CeramicSpeed seems way to expensive for ...
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2answers
93 views

Is the Shimano SL-M590 shifter compatible with XTR RD-M900 rear derailleur?

Shimano is known for making their high end components incompatible with their lower ranges (e.g. dura-ace 7400). How do they handle this on their mountain bike range? In my case, I'd like to run a RD-...
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3answers
81 views

Which Rim Size will Fit My MTB?

I just got an old MTB, I need to replace all the parts except the frame since the parts are in broken condition, except the sprocket and cassette I'm a total newbie and LBS here cost crazily high, so ...
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1answer
82 views

Is my Tiagra rear derailleur missing a screw?

Just flipped my bike over, spotted this hole in the underside of my Tiagra derailleur. Looks like a screw should be in there, but there it is not. Should there be? Should I worry? What is this screw ...
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2answers
219 views

Change chain with cassette or do nothing?

Sometimes as a hobby I repair entry level bikes for myself or for friends and family. The rear derailleur is working fine (no skipping/ slipping etc..). But than I discover (with a chain checker), ...
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1answer
83 views

Apparently too much rear derailleur cable pull

I have a Deore XT RD-M761 GS medium cage derailleur on my touring bike that seems to move too much per shift. It shifts the chain on a 11-30 8-speed cassette with chainrings being 36/48 and the ...
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2answers
324 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 (...
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1answer
79 views

Anyone tried piggy-backing one Wolf Roadlink on top of another?

I want to get a 46t sprocket on my old 9 speed Shimano Deore derailleur. The Wolftooth Roadlink only allows for a 40t, could I double-up two Roadlinks and get that extra capacity, or...?
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3answers
238 views

Can the SRAM Rival 1 rear derailleur be used with an 11-46T cassette?

I want to put the SRAM Rival 1 group on my next bike. Somewhere I heard that the rear derailleur can handle 11-46T cassettes despite the official documentation. Is that true? Are there any limitations ...
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2answers
300 views

11t-40t/42t cassette on 3x9 system

I need your help about gear ratio. I am currently riding 3x9 drivetrain, Deore m592 rear (SGS-Shadow), Deore XT m770 front. My gear ratio is: 11t-32t (rear) and 22t-34t-44t (front). My local hills and ...
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2answers
1k views

Derailleur-shifters compatibility Shimano GRX

Shimano writes in the description of the Shimano GRX Shadow Plus RD-RX812 11-speed rear derailleur that it is compatible with shifters GRX ST-RX810 and ST-RX600 shift/brake levers. Should I understand ...
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1answer
187 views

Shimano Sora: switching cassette from 11-32 to 11-34

I have a Triban RC500, about 8 months old. I want to add a lower gear below 32T. Is it possible to swicth the cassette? will I need a new chain? I am not an experienced bike maintenance guy, but want ...
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3answers
634 views

Will brand matter between a rear derailleur and front derailleur?

I had a crash recently that destroyed my 8 speed sensah reflex rd. I replaced it with a 9 speed shimano sora for a bit of upgrade but after 4 tune ups by the mechanic its still not right. Just so ...
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3answers
571 views

11-speed cassette, freehub and wheel compatibility

I have two wheels and two 11 speeds cassettes. With one combination of cassettes and wheels, shifting is reliable. With the other combination, the position of the cassette relative to the derailleur ...
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1answer
89 views

Which replacement pulley wheels fit a Shimano RD-6400/6401?

I'm looking for replacement pulley wheels for my RD-6401. It needs to have 10 teeth and a thickness of about 7.2mm. I do have a set of Shimano 10 teeth pulley wheels in front of me (Y56398030) which ...
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4answers
412 views

Rear derailleur not in line with cassette

I have just installed a new rear derailleur (Shimano Acera - RD-M360-SGS), and I feel like that the pulley has a weird angle (image below). It does shift but not sure if it's healthy. Any idea what ...
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1answer
71 views

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.
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2answers
94 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 ...
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2answers
192 views

XT 11 speed derailleur (RD-M8000-GS) rubbing 46T cog with b-screw all the way in?

I've broken my rear derailleur so I've decided to upgrade from my 2x10 to a 1x setup. For that, I've initially bought: Deore XT 11 speed derailleur RD-M8000-GS (I've read it can work with 10s, but ...
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44 views

Fixing up a rusty old Rallye mountain bike

I bought a Rallye mountain bike from Facebook Marketplace last year and did most of the major overhauling then as well. It was covered in mud, gunk, rust, had broken pedals, etc. So I had replaced the ...
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2answers
58 views

SRAM X01 Eagle 12s RD adjustment to work with 11s cassette + shifter?

I want to buy: X01 eagle 12s rear derailleur Garbaruk 11s 10-50 cassette I have: GX 11 speed gripshift KMC 11 speed chain How do you adjust the 12s rear derailleur to the shifter and cassette? ...
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1answer
104 views

Shimano Tourney “Rapid Rise” Rear Derailleur Installation

I'm trying to set up an old mountain bike that has a Shimano Tourney "Rapid Rise" rear derailleur which appears to operate in the opposite direction to the Shimano Acera derailleur on my own ...
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1answer
169 views

KMC Z7 chain for 8 speed cassete

Can I use KMC Z7 chaing (1/2 x 3/32) on 8 speed cassete Sunrace MFM-56? When I changed the old chain with KMC Z7, the smallest sprocket and the largest are fine. But in the between the shifting is ...
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1answer
60 views

Mix Match Using Wolftooth Tanpan

My current setup are using a full Shimano 105, medium cage GS 11-34t, crank are 50-34t. Through some digging, I want to upgrade the RD using Deore XT M8000 SGS Long, paired using wolftooth tanpan. ...
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2answers
82 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 ...
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3answers
610 views

Why rear derailer has limit on front chainring difference?

Just as an example, Shimano RD-M786-SGS (as most other RDs) specification says "Max. front difference: 22T". Why is rear derailler limited in front max difference? It is clear that it is ...
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1answer
166 views

Chain alignment on jockey wheel

Going over the lower jockey wheel (see first picture), my chain rubs against the inboard side of the cage and sometimes snags. It is a brand new derailleur (Shimano Acera M360) and a new derailleur ...
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1answer
60 views

Drivetrain problem!

I have had issues with the drivetrain on my bike. I believe I've pinned it down to two issues. The Shimano Deore XT SGS (long cage) 9 speed rear derailleur needs replacing. It was either damaged when ...
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3answers
489 views

My derailleur completely “opened” up. It is now almost a straight line. What have i done to my derailleur?

I had a flat on the side of the road. So I took my wheel off to replace the tire with a temp to get me home. When I reinstalled the wheel, the derailleur "opened up" completely...what have ...
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0answers
36 views

Bracket axle for Shimano RD-2300 rear derailleur

Where can I find a bracket axle for Shimano RD-2300 rear derailleur? I searched everywhere and I didn't find one. I need to mention that the frame type is Speed Fitness Alloy and bike is a Focus ...
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1answer
136 views

Is it possible that a too tight rear wheel quick release can cause shifting issues?

It seems that is the case with my rear QR/derailleur. If QR is really tight it's impossible to get the shifting quite right. Could it be because of material fatigue in my derailleur hanger? It's been ...
3
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1answer
202 views

Derailleur can't shift to 51-T sprocket. Deore CS-M5100 + RD-M5100

ISSUE: When attempting to shift to the largest cassette sprocket, the side of the derailleur cage contacts the 51t sprocket, so the chain is not able to go up the gear. WHAT I DID: My drivetrain was ...
4
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1answer
522 views

Shimano Acera hits spokes. Which screw to turn?

I have a Shimano Acera that hits the spokes in first gear (largest rear sprocket.) I found three screws on the derailleur Which one should I turn, in which direction? The bike (Specialized Sirius 2.0) ...
4
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1answer
66 views

Shimano TZ rear derailleur cable entry at strange angle causing wire rub

I have a cheap (but very nice!) secondhand bike I bought that I am slowly servicing/repairing using YouTube, forums etc. I am stuck on the rear derailleur, I can index it properly and it shifts fine, ...
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1answer
89 views

Rear derailleur adjustment

I have a 7 speed Shimano derailleur. It shifts really good from 1 to 6 but when I try to shift from 6 to 7 it just doesn't want to shift. Can someone help me?
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0answers
102 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 ...
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3answers
80 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 ...
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2answers
856 views

Can Shimano Claris R2000 shifters be paired with Claris 2400 derailleurs?

Can I use the modern looking shifters with the older model derailleurs without any problems in shifting?
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1answer
101 views

Chain slips off chainrings with a lot of pedal force

I have a 2001 Raleigh R600 road bike. It wasn’t ridden much when I got it, and I’ve recently been putting some miles on it. It was a 3x9 speed with 9 speed components. I just changed: Wheels Cassette:...

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