All Questions
Tagged with derailleur maintenance
30 questions
3
votes
3
answers
648
views
Is Mean Time To Retune FD and RD a major distinguishing factor between Sora and Ultegra?
Having gained experience riding both Sora and Ultegra, I'm puzzled that 2x9 already provides such narrow gaps that I'm entirely comfortable riding Sora (it helps that the cassette is 12-25), and that, ...
- 10.3k
4
votes
2
answers
438
views
What do I need to change on the rear derailleur to match with the new cassette?
I'm going to the Alps soon and thought that it is a good idea to change my cassette from 11-30 to a 11-32 (with a fresh chain).
I started with replacing the chain, so I used like 3 different 'chain ...
- 819
7
votes
5
answers
3k
views
Is it common for derailleur limit screws to drift over time?
I've just been adjusting my front derailleur, and found that the upper limit screw was severely impeding my shifting. My trouble getting into the big ring has been steadily growing, so it seems like ...
- 274
6
votes
2
answers
1k
views
I lost one of the rear rear derailleur hanger screws, what could be the cause, and is it safe to ride before I replace the bolt
I noticed that I lost one of the two small screws on the rear derailleur hanger attaching the hanger to the frame on my road bike. Might there be something wrong with my shifting that caused that? ...
- 295
5
votes
3
answers
4k
views
Barrel Adjuster Strategy - What's the best way to use barrel adjusters?
I was taught that barrel adjusters are to be used as an on-the-road way to adjust brakes or derailleurs. I think the exact quote was "Leave the barrel adjuster for the customer to use on the road&...
- 24.2k
3
votes
1
answer
2k
views
Chain skipping on upper pulley of rear derailleur
Background: I have a full suspension mountain bike with SRAM GX Eagle components. I snapped my chain recently, and replaced it with a new one of the same model. Made sure to size it the same as the ...
- 31
0
votes
1
answer
809
views
Chain crunching after degrease and lubrication
I did the usual degrease and lubrication on my mountain bike today but when I tried to ride the bike later on I heard pretty bad crunching sounds.
The sound is definitely coming from somewhere around ...
26
votes
11
answers
9k
views
Are there real-life alternatives to the chain+derailleur combo?
I was reading an article about the CeramicSpeed’s Driven concept and, while not interested in the efficiency part, the chainless system reminded me of something I was wondering for some time: are ...
- 1,135
9
votes
5
answers
23k
views
Derailleur adjustment: front or rear first?
When adjusting both front and rear derailleurs, which should be done first?
- 1,205
2
votes
1
answer
2k
views
Shimano 105 11 speed rear derailleur won't shift
It happened the last time I washed the bike. It's happened again this time. The rear derailleur won't shift the chain up even though I was careful about not pushing the cog wheel up or down. Last time ...
- 21
2
votes
2
answers
13k
views
How to re-tension front derailleur cable
Bike is a mid 80s Miyata with early Shimano 105 components. It's a 10 speed, 5 speed cog and 2 chain rings.
I recently had my front derailleur set up again by a good mechanic after it stopped ...
- 21
1
vote
1
answer
202
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 ...
- 1,445
5
votes
2
answers
4k
views
How to adjust cable length on integrated brake/shift levers, when there is no barrel adjuster?
I feel bad asking this question because I've been doing bicycle maintenance for over 20 years and this seems like a noob question. I was unable to find a Shimano manual to answer this question. I ...
- 1,472
2
votes
1
answer
501
views
Front derailleur adjustment
I need some advice on properly adjusting the front derailleur (shimano -tourney) of my bike.
I did watch youtube videos and stuff on the internet but was not able to adjust it properly.
When I ...
- 123
3
votes
3
answers
18k
views
Slippage Under Load [New Bike]
I got a new bike a three or four weeks ago and have noticed the issue arise this last week or two.
When I'm going up a hill (or any heavy load), my gears will slip. I don't think it's moving gears,...
- 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 ...
- 4,879
7
votes
3
answers
2k
views
What are the most common causes for hysteresis in the rear derailler?
I have often seen derailleurs on cheap MTBs to degrade in performance by showing hysteresis. By that I mean that to switch to a certain cog, one needs to shift one cog further and then immediately one ...
- 14k
3
votes
2
answers
2k
views
How do I find the right derailleur (gear-mech)?
I have a 9 x 3 speed mountain-bike. The derailleur got broken (and was since lost), I'm trying to find a new one. What do I need to go by to ensure I get a good fit? The rear-casette (sprokets) range ...
- 133
10
votes
1
answer
339
views
Setting light to a derailleur
At 3:30ish in this video, they set light to a front derailleur. Why? Degreasing it? Waxy lube that needs melting in? I can't think of a good reason. Any ideas?
- 5,814
3
votes
1
answer
1k
views
Why is my front Derailleur not shifting as smooth as it used to?
I have a Specialized Hard Tail 10' Model. When I ride and am shifting to the bigger gear on my front derailleur it isn't as smooth as it used to be or sometimes doesn't shift to the gear I'm going for....
- 33
4
votes
1
answer
4k
views
How can I adjust index shifter so it doesn't skip the second chainring?
I recently replaced my chain and cassette on my commuter bike. It was a first time operation for me, as I am a new to doing bike maintenance. That part seems to have gone fine. While I was at it, I ...
- 151
3
votes
2
answers
1k
views
Biopace chain rings and front deraileur rub
Turns out my front chain rings are biopace, after I thought they had disappeared!
I've got a problem with the chain rubbing the front deraileur at a certain point every rotation. I only get this in ...
- 924
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 ...
- 163
3
votes
1
answer
1k
views
ideal dérailleur height for a Deore on non-round/oval Cranksets (e.g. a Biopace)?
Reading on every site about front dérailleur adjustment, the distance from the bottom of the outer dérailleur plate to the bigger crank cog should be "one penny".
Mine is around 1cm! it does shift ...
- 1,465
2
votes
4
answers
12k
views
Determining front & rear derailleur compatibility
I have a 2009 Kona Dew and I'm just wondering how to figure out what front and rear derailleurs are compatible with my bike.
Do I just have to find a matching Shimano part that fits 8-speed gearsets? ...
- 797
3
votes
6
answers
13k
views
Adjusting rear derailleur - shifts to lower gear, but not to higher
Well, it will shift to a higher gear, but it takes two clicks of the shifter and it skips over a gear when it does shift. With one click the chain hangs on the current gear by the slimmest if threads. ...
- 133
5
votes
7
answers
15k
views
What to use to clean a derailleur?
I'm not sure what type of solvent to use to clean a derailleur.
user1196
18
votes
2
answers
45k
views
When to change derailleur pulleys?
A friend said me that if you have one part in a very bad condition like a cassette and then you put a new stuff like a new chain it will destroy the new stuff very quickly. A LBS said that I should ...
user652
11
votes
3
answers
39k
views
How do I adjust my rear derailleur (Shimano SIS) when it is only slightly out?
It has been a while since I had my bike serviced and the gears are sometimes slightly out of perfect alignment. This results in the occasional mis-shift. I also think the change in seasons have ...
- 6,283
38
votes
5
answers
12k
views
Perfectly setting up gears - how?
Every time I have my bike serviced, the bike shop sets up the gears on a stand in their workshop. The gears change perfectly on the stand, but when the bike is on the road, the rear derailleur doesn't ...
- 481