Mechanism to move the chain from one sprocket to another.

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2k views

Replaced chain, bike makes grinding noise?

Recently, I started going to a community bike shop to learn how to maintain and service my own bike. Ever since I changed the old, worn-out chain to a new chain with a master link, I've been ...
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3answers
4k views

Is there any functional point of using alloy jockey wheels?

Jockey wheels seem like the most pointless thing to upgrade on a bike. I can see swapping out the usual grey ceramic jockey wheels for an anodized alloy one to match the look of the rest of the bike, ...
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1answer
82 views

Front shifter has three positions, but front chainring is only double. Is this a problem?

My Merida Cyclocross 3 bike has a double chainring at the front. After a few weeks of being a little annoyed about the awkward shifting when going up steep hills, I realized that the front shifter and ...
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3answers
358 views

How do I stop my rear derailleur from rubbing against my chassis?

I have a fairly new Shimano rear derailleur on a cheap department store MTB a friend gave me. Recently the derailleur (particularly the jockey wheels) have started to rub against the chassis in high ...
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1answer
5k views

Sora front derailleur set up

I'm trying to get my front derailleur to stop rubbing in the high gears, smallest sprockets. To do this I am attempting to follow this guide by shimano: ...
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1answer
90 views

Touring Drivetrain Dilemna

I own a 2015 Specialized AWOL Elite and love it except when I am fully loaded and lumbering up a pass. I'm looking for a way to get more range without completely replacing my drivetrain. This ...
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1answer
168 views

Upgrading cassette - what do I need to be aware of?

I'm looking to replace my rear cassette and reduce the tooth count between the sprockets in order to make my gear changes less dramatic. I currently have a 11/26 9 speed SRAM cassette, and a stock ...
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3answers
220 views

Can I modify the gearing on a 2009 Jamis Aurora?

I have a stock 2009 Jamis Aurora. I'm looking to modify my gear set-up to make climbing hills with large loads a little easier on my knees, as I constantly find myself wishing I had one or more low ...
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2answers
846 views

I need help identifying my derailleur

I want to replace my rear derailleur shown in the photo above. I don't know what kind it is and and I was hoping someone could tell me which cage it is?
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1answer
1k views

front derailleur slipping?

I recently started to have a problem where the chain randomly goes from the large front gear to the smaller one. Ive been trying to work out the reason for this and would like some input on the more ...
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4answers
863 views

is it worth to change slx 2011 rear derailleur for xtr 2009?

I bought a bicycle last summer a Specialized camber comp and it mounts Shimano SLX as rear derailleur. My intention is to change it for a xtr derailleur (from 2009) which is mounted in a bicycle I ...
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2answers
1k views

Is it possible to reverse cable direction in Shimano M770 shifter?

I tried to set up the perfect shifter + derailleur. For the last part it is better (for me) to have low-normal version, because reducing gears is essential for me (I bike mostly within city). So I ...
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1answer
37 views

Not sure which limit screw is H vs L

I'm using a Devinci silverstone s.1 that's having trouble getting up to the highest/largest gear on the front. I checked the tension and it didn't seem to make a difference. Read I should check ...
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2answers
2k views

I want to remove my front derailleur?

I'm new to biking only doing it since the past 3 months. I don't use my front gears much since i'm pretty tall and lower gears means going at a very high cadence for little output. so wondering if i ...
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1answer
340 views

First time buying parts ( derailleur, chain, rear axel, shifters) need help!

I have a 21 speed (3 front, 7 rear) NEXT bicycle ( model number 8568-49, year 2007.12.06) sitting in my back yard at the moment a few missing parts and I was hoping to get some help on what to get and ...
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1answer
156 views

No more chainguide from Sram?

I remember I saw somewhere new Sram system that does not require chainguide. Don't remember the model, but could you please tell me more about it? How does it work?
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3answers
2k views

Gear up-shift not smooth

When I am pedaling hard and shift to a larger sprocket, the shift is not smooth or sometimes doesn't happen at all. Sometimes even double up-shifts don't work. There is no problem shifting when I test ...
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3answers
7k views

Front Derailleur Not Working

I recently bought a new bike off of BikesDirect. http://www.bikesdirect.com/products/windsor/wellington2_IX.htm However, no matter what I do, I can't seem to get the front derailleur to do anything. ...
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1answer
420 views

Fitting a rear derailleur

I'm building a bike from old bikeparts, but i've got a problem. The part that connects the derailleur with the frame doesn't fit, and I thought I would find something on chainreactions, but I can't ...
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2answers
1k views

Installation of the simplex SX410

The Simplex SX410 rear derailleur on my bike was dirty, so I got it off to clean it. Yet, now I can't quite seem to get it on again in a correct way. Specifically, I can't get the spring to be ...
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4answers
5k views

How do I know which derailleur I need?

The derailleur on my sons mountain bike is mangled, how do I know what to replace it with? I understand they aren't one size fits all. There are 6 sprockets on the rear cassette and 3 on the front.
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46 views

Campagnolo Athena - Lost plastic part on front derailleur. Now the chain is droping on upshifting

Somehow the plastic part on the side/front of the derailleur is lost. Now I can't shift properly because the chain drops to the outside on an up shift. The plastic part is visible in this image. Its ...
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3answers
187 views

Campagnolo Crank Compatibility 11 speed crank to 9 speed chain/deraillieur/shifters

I need to replace my 9 Speed Campagnolo Racing T Crank with a new one which uses the power torque system. Is a 11 Speed Athena (or 10 speed Centaur) crank compatible with the racing t front ...
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1answer
103 views

Shimano XT-Alivio compatibility

I am going to buy a Shimano XT rear derailleur, but currently I am using Shimano Alivio M4000 shifter. I would like to know if these two components are compatible?
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813 views

Can a 7 speed Derailleur work on a 8 speed cassette

Can a 7 speed Derailleur work on a 8 speed cassette I have a extra 8 speed shifters? and a wheel that has a 8 speed cassette.
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1answer
3k views

Can a 10 speed rear derailleur be modified for 9 speed and then modified again to a 10 speed deraileur?

I have Shimano RD-5700 105 Rear Derailleur (10-Speed, GS Medium Cage, Black). I bought it to use on my 9 speed bike, but now what to add new shifters (3x10). My bike shop wants to replace the ...
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136 views

Rear shifting - Unable to shift to toughest gear

I was adjusting my rear shifting following the advice in this video: It was when I took off the wire tension and screwed the high limit all the way out that the chain ...
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2answers
467 views

Shimano FD-M191 replaced with Shimano FD-M590

just replaced Shimano front derailleur (FD-M191) to FD-M590. And problem appears, on smallest cog chain rubs lightly on left side, and on biggest cog on right side. Just can't lower derailleur more ...
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2answers
952 views

chain getting stuck between chainrings

I have an old Cannondale road bike with Suntour shifters. When I shift from the front middle ring to the small inner-most ring, the chain falls into the gap and binds tightly between the two rings. ...
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1answer
97 views

Chain brushes derailleur

I just got my ever first road bike, Revenio 3.0. I'm so excited. Already got my ever first road bike injury as well - those damn cleats are hard to unclip, springs on those shiny new pedals are too ...
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3answers
920 views

Can I replace the front front derailleur with chain guide?

My front derailleur (Shimano LX T670 / 34.9mm) has been stuck on the highest gear for a couple of weeks now which has got me thinking about how little I use it. To save weight could I replace my front ...
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2answers
132 views

Looking for a narrow-cage 16T capacity FD

I'm putting a 46x30 chainring with a pretty narrow tread on a frame. On the advice of my LBS I got a Sun XCD double FD, but I'm starting to think it's not right for this application. When I have the ...
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1answer
178 views

Did the Giant Trinity A1 come with a derailleur hanger?

I am putting a bike together and have it all apart but don't see the derailleur hanger anywhere. Did I lose it or did the bike not come with it? If it didn't come with it, why not? Thanks.
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1answer
360 views

derailleur P-screw/B-screw does absolutely nothing

I know dérailleur adjustments are frustrating, but this is the 4th day i'm working on this... i stop working just before the rage kicks in and leave everything to continue another day :) The problem ...
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1answer
200 views

Front derailleur cable change

I changed my shifters and need to change my front derailleur cable. I just don't know how to proceed exactly. A guide I found told me to: on big sprocket, small plate (is that the english word?? ...
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1answer
1k views

Is an Acera cassette compatible with an 8-speed Deore rear derailleur?

Is this Shimano Acera 8-speed cassette and chain compatible with a Shimano Deore 8-speed rear derailleur on my mountain bike?
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1answer
90 views

what lubricant should I use?

The Jockey and idler of my derailer, are not spinning as freely as I would like. What type of lubricant should I put on these derailer pulleys to make them spin more freely?
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1answer
60 views

Why is part of this Derailleur loose? (Sun Tour Cyclone II)

As you can see from this picture, part of my Derailleur is loose. Notice how the gear is not in flush with the cylinder. It has a no other parts (that I can find!) than a threaded screw to go in ...
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3answers
127 views

Why does my front derailleur not work when it is cold?

When it is warm outside my front derailleur works just fine. But when it gets colder (40F) the lever on the handle bar does not catch and I can move it without any resistance the whole way without the ...
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1answer
205 views

Chain Slipping?

I am not the most knowledgeable when it comes to bikes so please bear with me. I have a Claud Butler and after fixing a puncture I decided to ride it. As I was riding, I could hear a sort of rattling ...
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3answers
267 views

My front deraileur needs adjustment after every ride

I have a Cannondale Women's Adventure 1 that I got this spring and have been riding on local (paved) trails every weekend. I started off riding about 6 miles a weekend and recently have progressed to ...
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1answer
2k views

Shimano RD TX55 Tourney TX 6/7 Speed Compatibility

I currently have a 7 speed bicycle, and recently changed my rear derailleur to a Shimano RD TX55 Tourney TX for a 6/7 speed compatibility. My shifter is Shimano Rapidfire for 7-speed. The current ...
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1answer
160 views

Trek 6500 rear derailleur

I am rebuilding a Trek Mountain Bike model 6500 built in 2005. I don't see a model number on the Shimano Deore rear 8 speed derailleur that needs replacing. Is there a hidden model number somewhere ...
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1answer
668 views

How long does a shifter, rear mech and front mech last?

I am talking about absolutely dirt cheap components which are non-branded. In terms of number of kilometres how long do they last? The bicycle is ridden on city and country roads and maintained ...
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2answers
2k views

Are Shimano R440 road flat bar shifters compatible with a mountain bike front derailleur?

The Shimano shifter flat bar series have the same cable pull length than the mountain bike shifters. Is this series compatible with a mountain bike front derailleur, Deore, for example?
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1answer
804 views

Chain guards for front derailleurs: Metal alternative to SKS chainboard?

Can anyone recommend an aftermarket, front-derailleur-compatible chainguard (along the lines of the SKS chainboard) that's not made of plastic? Maybe something like the one on the Marin Bridgeway ...
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1answer
4k views

How to setup triple front derailleur with a double crankset

I want to use my front derailleur which is a tiagra on a 3x10 speed setup with a compact double crankset making it a 2x10 setup. What is the proper procedure for setting up the triple chainring ...
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1answer
180 views

Rear derailleur speed number interchangability

I have a bike with an 8-speed cassette and would like to switch to 9-speed cassette. Can I keep my rear derailleur? which is a Shimano Alivio one? I understand the indexing might mess up this, but I ...
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1answer
2k views

Can you use a 6/7 Speed Derailleur on a 5 speed bicycle?

I bent my derailleur beyond repair today. I'm an inexperienced cyclist. I have a 5 speed Takara. Can I/Should I replace it with a 6/7 speed rear derailleur? I am having trouble finding a 5 speed one ...
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1answer
448 views

34.9mm front derailleur on steel frame?

Can I fit a 34.9mm front Shimano derailleur on my steel frame? I understand that steel frames are narrower. However, is there some sort of adapter that I can use, or can I even wrap the frame around ...