Mechanism to move the chain from one sprocket to another.

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3answers
546 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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3answers
349 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
7k 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: http://bike.shimano.com/media/techdocs/content/...
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1answer
610 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, ...
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1answer
49 views

Front derailleur takes 6 clicks to shift gears, instead of 3 [duplicate]

I've just stripped all cables and chain from a badly kept bicycle and replaced them. I've correctly adjusted the rear derailleur and it works great. However, front derailleur which only has 3 gears ...
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2answers
329 views

10 speed cassette/derailleur, but only getting 9 clicks?

I've got a 2013 Giant Escape 0 Hybrid with a stock 10speed Shimano Deore rear derailleur. My wife was riding the bike the other day, and somehow managed to shift in such a way that it popped the ...
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2answers
304 views

Road Front Derailleur / Shifter Tuning

I've recently converted into 2spd crankset so I've bought a new 2spd road lever. I'm really struggling now to tune the front derailleur. Could you please assist me by answering this questions: Why ...
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3answers
276 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
2k 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
2k 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
951 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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2answers
48 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 ...
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1answer
164 views

My calf catches my derailleur when I pedal

I wore cycling shorts for the first time since purchasing my Ridley Liz and I found that my right calf was catching on my derailleur to such an extent that I ended up with no skin left on my leg. Is ...
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3answers
376 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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3answers
576 views

Can't shift to gear one or two

I had an issue where every time I put my bike in gear 3, it would just keep "skipping". By this I mean that it wouldn't stay in gear 3; the chain would go onto it, then fall onto gear 4, then go back ...
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1answer
5k 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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3answers
2k 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
411 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
160 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
4k 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
10k 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
444 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
6k 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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2answers
66 views

Downshifting problems

My wife has a bicycle like this. It is only a few months old and it gets light use on weekends on (smooth) some dirt roads. Recently it sometimes fails to downshift at the rear (i.e. shift to the ...
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2answers
101 views

derailleur recommendation

I have been experiencing some issues with my rear derailer. I played around with it quite a bit to adjust it correctly. Finally after giving up, I took it to the shop and the guy showed me that the ...
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2answers
125 views

Chain rubbing on new derailleur and crankset

My bicycle is a Rockrider 520. I have replaced my front derailleur with Shimano Acera FD-M390 and my crankset with Shimano Acera FC-M391. But chain is rubbing inside of FD even when FD cable is not ...
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2answers
359 views

Bent front-derailleur

I biked to school today with my bike in perfect condition. Locked it up and went to class. When I went to my bike a couple hours later, the derailleur was bent out of position. My bike's front gear ...
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1answer
217 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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3answers
224 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
669 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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1answer
120 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
1k 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
158 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
209 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
564 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
228 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
40 views

Do all 10-speed chains fit 3x10?

I'm wondering if all 10-speed chains fit to 3x10. A lot of webshops say that the chain is "for road bikes 2x10" or something like that. Or nothing at all. The chain I have right now (Shinano CN HG-54) ...
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2answers
54 views

Can a double rear derailleur work?

I was wondering instead of a long cage rear dearailleur (RD), what would happen if 2 rear short cage RDs were used instead? I realize the 2nd one might cause some mounting issues but assuming there ...
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1answer
83 views

What is the relationship between block, gear speed and derailleur? With Pictures

I am buying a new bicycle. The seller tells me it is "14 speed with 8 speed block, but the derailleur won't reach the lowest gear, so I will switch to 7 speed block". How many gears will the bicycle ...
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1answer
61 views

New Shimano TX55 Not Shifting

I am having a problem with my rear derailleur. I installed as per instructions, adjusting the H and L limits to what I believe is proper. The problem I am having is that when I am in 7th gear, ...
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2answers
394 views

How to change 2x11 to 3x11 on mtb

Hey I was wondering how you would change a chainset from 2x11 to 3x11 on a Carrera Fury (SRAM components) Thanks
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2answers
52 views

Trying to find Derailleur hanger for Triace A310

As you can figure out from a quick google search, this bike almost does not exist. Finding info for this bike has been near impossible. If you can direct me to any info about which hanger I need to ...
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2answers
92 views

Chain Slip at front changing from large to small front chain wheel (with large cog at back)

I have a Pinnacle Neon 3 Hybrid, Shimano Sora 9 speed cassette and 2 chainrings at the front. The bike is 2 weeks old and I've cycled around 65 miles so far. Chain ring has come off 3 times at the ...
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1answer
156 views

Need help picking the right rear derailleur and chain for Giant Escape 2

Product page for the bike i have: http://www.giant-bicycles.com/en-us/bikes/model/escape.2/14810/75679/#specifications I'm not able to make sense of the variations of shimano altus derailleurs, here'...
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1answer
73 views

mix left shifter and font derailleur of different speed

I have a Shimano 5700 front derailleur and 5700 flat bar shifter (left) but for some reason I can't use the FD on my frame (too narrow, my driven train is 9 speed). After lot of research some people ...
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1answer
83 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
163 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 ...