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Questions tagged [derailleur]

Mechanism to move the chain from one sprocket to another.

4 votes
1 answer
10k views

Very stiff front derailleur

My girlfriend has been having problems with her front shifter/derailleur since she got her bike. For some reason, moving the chain from the middle ring to the big ring at the front, is very stiff. ...
Sergio Romero's user avatar
4 votes
1 answer
10k views

Upgrade Shimano Sora shifters to 105

I want to upgrade my 3x9 Sora shifters to 3x10 105s. However, looking at the Shimano Compatibility Chart, it appears to indicate that I'll have to replace my front and rear derailleurs in addition to ...
Carey Gregory's user avatar
3 votes
1 answer
1k views

How do I properly adjust a front derailleur?

I have a Shimano FD-TX50. How should I adjust it?
Razvi's user avatar
  • 229
3 votes
3 answers
3k views

What causes my chain to derail at the rear when I accelerate?

I recently bought a beat-up old mountain bike for commuting. I've tried to clean and adjust the derailleurs and everything seems to work well enough in my garage. But when I put heavy weight on the ...
Larry OBrien's user avatar
3 votes
4 answers
24k views

11-42t cassette with a 9 speed derailleur, will it work?

I'm trying to figure out if my 9 speed derailleur (Shimano Deore) will work with a 11-42t cassette (note that it is a specific 9 speed cassette). It is for a MTB 1× setup I previously had a 3×9 ...
Tiaan's user avatar
  • 31
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-...
halfer's user avatar
  • 215
3 votes
4 answers
30k 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 ...
Lindsay's user avatar
  • 131
3 votes
3 answers
18k views

Front derailleur doesn't seem to be moving

I'm trying to troubleshoot my 24 speed hybrid bike. As it was, the front shifter was having very little effect. I would change gears and not much would happen. When I had a chance to look at it, I ...
Damon's user avatar
  • 525
3 votes
2 answers
567 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 ...
Lynn Pañares's user avatar
3 votes
3 answers
1k views

Can I put a lower geared cassette on my bike?

I bought a bike recently that has a 34 front 28 rear gear ratio. It is an Elfama E2500, which is a Korean brand I believe. It has a Shimano Claris (which is rated for up to 32 teeth) rear derailleur ...
Joff's user avatar
  • 133
3 votes
3 answers
42k views

Front derailleur won't spring back to lower gears

The front derailleur on my mountainbike sometimes gets stuck in high gears. When this happens and I want to shift down I can nudge it a bit with my foot and it will spring back to the lower gear. I ...
jilles de wit's user avatar
3 votes
2 answers
4k views

Front Deraillleur Barrel Adjustment

I'm working on adjusting my front derailleur; Shimano 105 group set 5700 series. On reading on the net and also watching a couple of online youtube videos there is comments about the barrel ...
Grant Sayer's user avatar
3 votes
3 answers
338 views

Rear derailleur looking abnormally contracted – What is wrong?

The derailleur is not extended. The cable tension seems ok. What could be the problem?
Erwann's user avatar
  • 250
3 votes
1 answer
8k views

9 Speed Road STI + MTB Derailleur

Apologies if this is is obvious or has been answered before. I'm looking at setting up a touring bike, using road STI levers (Shimano or equivalent, looking at Tiagra 3x9 or possibly the Microshift ...
Rob's user avatar
  • 31
3 votes
2 answers
7k views

Adding front derailleur vs upgrading the rear one on a (ladies) bicycle

What I want to achieve is going from having some gears to having more gears. To be more specific I would like to get more gear ratio range in both low and high end. First of all I tried to look for ...
user391035's user avatar

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