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

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8
votes
3answers
3k views

Is my derailleur hanger too bent?

I bent the (steel) derailleur hanger on my 9spd cassetted (steel) Bianchi Volpe about 1.5 yrs ago, and I just did it again, but worse. This time the derailleur got sucked into the wheel and really did ...
6
votes
3answers
26k views

How can you identify if a Shimano rear derailleur is medium or long cage?

I have a 2013 Shimano XT rear derailleur. It is part of a 2x10 drivetrain. How can I find out if it is a medium or a long cage one? The picture below shows the derailleur.
0
votes
0answers
43 views

Rebuild Gary Fisher Mullet rear derailleur

I have a Gary Fisher Mullet from sometime between 2006 - 2008. I don't know anything about bike except the fact that I got one Hehe. My rear derailleur is in pretty bad shape. Well, I don't know for ...
3
votes
2answers
45 views

9 speed cassette to put 42 teeth

I like to start cycling again but I have a steep hill to arrive at home so I would like to put a 42 teeth. I have an Ideal mountain bike model hillmaster with a 9 speed cassette. All videos on you ...
4
votes
1answer
150 views

Choose medium or long cage?

I am upgrading (or downgrading ? :P) my MTB to 1x, currently on compact 2x10. I will be changing chainring, derailleur and cassette. I will get 11-42 Sunrace MS3 10-Speed Cassette. Also Shimano XT ...
2
votes
1answer
31 views

Rear Derailleur - getting stuck in largest rear cog

Bike is only about 4 months old. I was indexing my gears last night, and the rear mech cage is getting stuck when shifting from largest cog to second largest cog. If I shift to the third largest cog, ...
0
votes
1answer
49 views

Name of a certain modern rear-derailleur part at upper end of pivot [closed]

Some derailleurs, particularly "old style" drop-out-mounted ones have a pivot whose upper end is a kind of combination joint: it has a bushing that allows the pivot to rotate, under spring action, and ...
4
votes
1answer
120 views

Modded folding bike and strange chain skipping on most gears

I've a folding Tern Link D8 that I've started customize by replacing some parts...what is driving me nuts is a strange chain skipping that happens on some gears and only when I apply some force (...
5
votes
1answer
567 views

Can I just fit a cassette with more gears with the same derailleur?

I've got a Boardman Road Sport which I use for commuting and doing reasonable length rides during the week etc. I have Shimano Claris as my rear derailleur and so is some of my groupset. I would like ...
0
votes
3answers
83 views

Is there a technique/tool to assist with rear derailleur high, low, and index alignment?

Everything I read gives this picture like this: Yet the reality of this alignment, it can be somewhat difficult. Is there a better technique or tool to help get the high, low, and index shifting ...
5
votes
1answer
123 views

Stock 10 Speed Shifters with 9 Speed Transmission [closed]

I have a bike that was built with 10 Speed Campagnolo Veloce Shifters, 9 speed Veloce rear derailleur, and SRAM 9 speed cassette and chain. I found a page on the builder's website that states they do ...
0
votes
1answer
37 views

Changed shifters and chain isn't in same spot [duplicate]

My friend changed out the shifters on his bike and his rear derailleur isn't on the right sprocket based on what his shifter says. How can you fix this?
5
votes
2answers
426 views

How can I fix my rear derailleur's B-tension adjustment?

I've noticed that my rear derailleur (Ultegra 6700) will not return to where I've set the B-tension adjustment. Pulling it away from the hanger means it will just stick there, or maybe move back a ...
1
vote
1answer
57 views

Indexing 6 sprocket rear derailleur, having trouble reaching largest sprocket

I'm trying to index my rear gears after replacing my 6 sprocket freewheel. I've set the limit screws fine, but I didn't have enough play in the barrel adjusters to make much adjustment, so I undid the ...
3
votes
2answers
137 views

What to do about a broken rear derailleur inner cage plate?

The chain on my road bike got caught in the rear cassette and as it snapped it broke one of the guide tabs on the inner cage plate of my new Shimano Ultegra 6800-SS rear derailleur. My two questions ...
0
votes
2answers
93 views

How do I bend my rear derailleur hanger (part of frame) back into place

Somehow I bent my rear derailleur hanger, how would one suggest bending it back into line? In my case the rear derailleur hanger forms part of the frame and therefore if I snap it when bending it back,...
1
vote
4answers
10k views

9-speed system to 11-speed drivetrain upgrade?

I am currently upgrading my bike from a 9 speed to an 11 speed system. I am currently using shimano 105 components and will continue to use them within the new system. Current bike has a shimano 105 ...
1
vote
0answers
84 views

Shifting problems after removing and replacing rear wheel

I had a mysterious flat tire on my rear wheel after I had left the bike standing for the workday. I removed the wheel and changed the inner tube. I didn't think anything went wrong while doing that (e....
0
votes
0answers
26 views

Want stylish rear derailleur to match 1980s friction-shifting bike? [duplicate]

I've just crashed and bent the Suntour Cyclone long cage rear derailleur which I've used since 1985. (Damn.) Can anyone recommend a new model that meets the following requirement? This was a classy ...
4
votes
2answers
1k views

Derailleur guard on road bikes?

I live in an area with lots of debris, dodgy paving, and rain, and to make matters worse, I fall down sometimes (I know!). The main things that get damaged, of course, are the brake handles and the ...
4
votes
2answers
116 views

Rear derailleur lifespans

How should I know when my rear derailleur is getting worn? I can measure/inspect chains, tyres and brakes; gears tend to show problems on a new chain if they're worn. But when changing my chain at ...
2
votes
1answer
69 views

What cage is this

I have this rear XTR Shadow+ derailleur and I wanted to know if it's compatible with OneUp RAD Cage (which is for Shimano medium cage) : Will it work ?
2
votes
1answer
72 views

Can't find the B-tension screw in rear derailleur

I am trying to register my old rear derailleur (a 15-year-old Shimano "7sis"), and I'm trying to find what every guide calls the "B-tension screw". I looked everywhere and couldn't find anything that ...
4
votes
2answers
108 views

Chain skipping mid cassette after a clean

I have cleaned my chain and gears with rubbing alcohol and towels. Afterwards, I applied some chain lube on the chain. Now, when under a lot of torque, the chain skips and slips mid-cassette. Low ...
2
votes
2answers
840 views

Does the Shimano Tourney TX rear derailleur support an 8 speed cassette?

I would like to upgrade to 8 speed. Does the Shimano Tourney TX rear derailleur support an 8-speed cassette.
1
vote
1answer
31 views

How do I determine my Campy cage size? [duplicate]

I have a Campagnolo Chorus 9-speed rear derailleur. I am trying to determine the largest cassette I can use. The main question I have is how do I determine what size cage I have. It is not a new ...
4
votes
1answer
33 views

Tourney RD upgrade

I have a Shimano Tourney rear derailleur that has an extension claw (hanger). I would like to replace it with a Deore M591. Do I need to install an adapter to make up the length of the claw? ...
3
votes
1answer
213 views

Sachs- Huret derailleur (re)installation

Sachs - Huret derailleur installation So the learning curve continues on the '85 Peugeot P-16. The main lessons are to take pictures and time getting each thing done. I have the rear derailleur hung....
0
votes
1answer
50 views

Rear derailleur on this set

I have one KHS sixfifty 500, I want to upgrade my bike so I have already bought Shimano Deore XT M771 front derailleur Shimano Deore M590 shifter So I want to know your suggestion to rear ...
2
votes
1answer
39 views

Can I Upgrade shimono Ultegra 9 speed 12-27 cassette

I have a 2009 Trek 7.7 FX with Ultegra 12-27T cassette, 50/39/30 Front triple. I want to upgrade the rear cassette to give better hill climbing gears. Can I fit an 11-34 Rear cassette and if so what ...
2
votes
1answer
138 views

Shimano Rear Derailleur Max Capacity

I need to get a new rear derailleur. My chain rings are 53/39 and my cogs are 28/11 so if I am not mistaken I need a total capacity of (53-39) + (28-11) = 31. I need a 11 speed compatible rear ...
7
votes
7answers
304 views

why would my chain slip on the road, but not when the bike is on a stand?

The chain on my bike has started to slip a lot -- every couple of seconds when riding. It happens, as far as I can tell, in every gear, and is unrelated to shifting. The precise nature of the problem ...
4
votes
2answers
87 views

Diagnose grinding sound from single rear cog

I've got a '70s-era ten-speed road bike with (what I think is) a Huret Eco rear derailleur which shifts well, but for some reason a loud grinding sound emits from the rear of the bike when using the ...
3
votes
1answer
49 views

Cable pull, indexing of Shimano's IGH vs. deraileur

What's the exact cable pull and indexing of Shimano Alfine SG-S700 SRAM G8/9 Shimano ROAD RD-5800 SRAM Force Rear dérailleur other... The idea is to use ST-RS505 brifter with an IGH. Not entirely ...
4
votes
1answer
285 views

Vintage 1979 Peugeot roadbike rear derailleur change

Hello guys, The rear derailleur (6 speed) on my bike (picture attached) shattered all of a sudden while biking uphill after a few months of problems with the chain not fitting immediately on the ...
1
vote
1answer
614 views

Why 9 speed front derailleur cannot handle 10 speed rear derailleur?

Some people are using non compatible components on their bikes. For example, using Tiagra's old 3x9 speed FD (4503?) with a 10 speed RD. And it works. So what is the point of saying "Dear customer, ...
1
vote
2answers
52 views

Rear derailleur does not shift down

I'm working on a bike where the right shifter was not working and I replaced it. it's a 7 gear cassette and the problem now is that the rear derailleur would not shift down past 3. When I manually I ...
3
votes
1answer
115 views

Indexing issues on new build, shimano 105 5800

I am in the process of building a road bike. I currently setting up my rear derailleur. I can't seem to index the gears. I have set the high and low limit screws. I can shift up the cassette (small ...
3
votes
3answers
196 views

When down-shifting my rear derailleur (Campagnolo 10spd) is skipping multiple gears.

The problem feels like it is in the shifter as it just "lets go" when I press it. I'm told it could be the G spring. Is it something in the derailleur or the shifter? If its the shifter is replacing ...
0
votes
1answer
80 views

Rear derailleur needs a couple pedalstrokes to change gear

As of late I'm having some trouble with my rear derailleur. When I shift specific gears (most likely to happen to the middle gears), the rear derailleur feels like it doesnt have enough power and ...
2
votes
2answers
459 views

Shimano sora shifter no longer shifts

On my commute yesterday, I noticed that my right shifter was no longer 'clicking' when shifting my rear derailleur up into a larger sprocket. It still shifted fine, but I noted that I should look into ...
1
vote
0answers
73 views

Campagnolo Cambio Corsa

Does anyone make this sort of system and sell it today, or is my only option looking for someone selling theirs? I've googled whether similar systems are being made today but found nothing to my ...
4
votes
1answer
55 views

Correct setup of Huret rear derailleur

I've got (what I think is) a Huret Eco rear derailleur which seems to somehow get "stuck" in an "open" position when shifting on the front chainrings, i.e. the return spring somehow stops "working" ...
4
votes
1answer
52 views

Lowering my Tour bike gearing to MTB gearing

I am going on cycling tour on the Himalayas through Tibet, Bhutan, India, Nepal and Pakistan on my Araya FED touring bike. Now I am thinking in changing my gear, crank which is SR-SUNTOUR XCT 48-38-...
1
vote
1answer
83 views

Shimano STX RD-MC30. Replacement

Apparently there is too much play, indicative of it being too worn to function properly. Would the RD-MC31 be compatible or is there a newer compatible set that I could use?
1
vote
1answer
59 views

Shimano Altus Rear Derailleur for single speed to 3 speed conversion

I am converting my Sonders eBike from a single speed to a three speed and I need some help finding the best Derailleur. I would like to use a Shimano Altus as I understand that they are a step up from ...
5
votes
1answer
10k views

Which pulley is which on my Shimano STX RC derailleur?

I disassembled my rear derailleur to clean it; when I removed the sprockets they basically looked the same; both jet black and caked with all sorts of black grease-like-stuff. I figured they were the ...
2
votes
1answer
96 views

Can I change the cage on a Campagnolo Chorus derailleur?

I have a Campagnolo Chorus 10 speed rear derailleur that will not shift properly. I've aligned the frame, adjusted the high and low settings and attempted to fine-tune the shifting with the barrel ...
1
vote
1answer
663 views

Shimano Tiagra Rear Derailleur - Barrel Adjuster Won't Screw In

My rear derailleur barrel adjuster has unscrewed completely and now I can't get it back in. Is it likely that I've damaged something here, or is there some special technique to screw in barrel ...
1
vote
2answers
371 views

Rear derailleur shifts all gears at once

I've got Campagnolo Veloce gear system and I recently changed my worn-out rear cassette to a new one. Since then I've experienced issues when shifting to higher gears. When I shift, the cable moves ...