Questions tagged [derailleur]

Mechanism to move the chain from one sprocket to another.

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1answer
47 views

What's the difference of SHIMANO SORA and SHIMANO DURA-ACE?

I have a bike front derailleur and rear derailleur are Shimano Sora, I don’t know if it can be replaced with Shimano DURA-ACE
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38 views

Front Derailleur / Gears not working [duplicate]

When I push the lever to change up the chainrings, I physically can't push it as it is like something is making it stuck, so I tried loosening the cable but had to do this so much that when I pushed ...
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2answers
321 views

I want to covert my bike from a 7 to 9 speed. I have a Shimano 600 derailleur. Will this work or what would you advise as affordable upgrade?

I want to covert my 7 speed to 9. Currently I have a Shimano 600 derailleur. What parts do I need to make this work?
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0answers
88 views

Rear Derailleur Noises

When I pedal on my bike there is a loud noise that increases as I go into easier gears on the cassette and in the easiest gear I can see the chain catching on the derailleur jockey wheels, why is this?...
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1answer
90 views

If my max cog is 50t and I got a 52t cog

Hello I just bought a ltwoo groupset on ebay because I want to go cheap for my first ride since I'm not sure if I will be riding a lot. I went on the ltwoo website later on and found on that their max ...
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1answer
102 views

Upgrading gearing help, currently running a 1x9 with a 30t crankset and 11/36t cassette. Can I upgrade to a 11-42t cassette?

I have a 1x9 that I really dislike and want to upgrade. I was told to get a "Shimano Deore FC-M625 Double 2x10 Speed MTB Bike Crankset 38/24T" to upgrade my 1x. I additionally caught a ...
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1answer
78 views

Should I Upgrade my MTB Rear Derailleur? (After Crash)

I mashed my 8 speed Shimano Acera rear derailleur in a crash over the weekend and need to get it replaced. Is it worth spending a little extra money and installing a slightly higher-end derailleur, ...
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1answer
71 views

Will a shimano acera rear derailleur work with a shimano altus cassete?

Got sick of breaking rear axles. Im going to convert to a freehub. Currently i have a shimano acera 9 speed rear derailleur. I found a shimano altus cassete which has a huge 36 tooth sprocket which is ...
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2answers
612 views

Rear derailleur moves forward when pedalling stops

Can you please help me to resolve the issue I am having? When I stop pedaling rear derailleur moves forward by inertia. This happen almost every time i stop pedaling and start coasting. I have a video ...
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1answer
73 views

My bike is not shifting to the proper gear

So I have a Shimano derailleur and it shifts up decent only problem is it does not shift to the gear it's supposed to shift to. On my bars it will say I'm in gear 5 for example but the back of my bike ...
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1answer
71 views

Which downtube friction shifters work with 2021 Campagnolo 11-speed cassettes, and how well?

Another question from a few years ago asks about Shimano 11-speed derailleurs; I have a related question about current (2021) Campagnolo equipment - I'd like to understand what downtube (friction) ...
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2answers
217 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 ...
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1answer
72 views

Is my bike safe to use if cogs and crank is not that aligned?

Hey guys is it fine if my freewheel bike which is single speed is not that straight with its chain line, because my cogs and crank arent that straight but it is also not that far, im thinking if it is ...
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2answers
294 views

What are the long-term effect of riding with a chain that's too short?

I bought my bike late November 2017, and have been riding it with the same chain ever since. I've only done very light riding with the longest rides I've ever done amounting to 60km. Last week, I took ...
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0answers
73 views

SRAM Yaw Front Derailleurs

Can anybody help me with any tips on fine-tuning the adjustments on this derailleur (Force 22)? The positioning as far as I can tell is good, I can stick a penny between the teeth of the big ring and ...
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1answer
67 views

Gears slipping when back peddaling

So i was out on my bike racing this weekend and i had a pretty fun time but on one of my practice runs my chain fell off so i quickly got off and put it back on and worked perfectly fine from there. ...
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2answers
79 views

Can no longer shift to lowest gear

I recently worked on my derailleur a bit to fix some issues in high gears, however, now I can no longer shift down to my lowest in the cassette when in either crankset. I have tried the L screw at ...
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1answer
62 views

Front derailleur replacement

I'm not a pro cycler and I bought this Schwinn hybrid bike at a local shop, the front derailleur is not working properly and it seems very cheap and I'd like to change it for something more durable. ...
0
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1answer
81 views

Adding a derallieur hanger extender

So I have bought a bike but the easiest gear on the cassette is a 30 tooth and the derailleur is a short cage derailleur, the chain keeps falling off this gear and back to the next easiest gear, is ...
4
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4answers
965 views

Can my belt drive frame be converted to a derailleur setup?

I want to know whether my frame is compatible with any kind of derailleur hanger, as I want to install standard gears. Due to my Nexus 8 speed hub being really quite uncomfortable and faulty since ...
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2answers
109 views

Claris 2400 rear derailleur paint touch up

I was planning to do a touch up paint for my 2400 claris rear derailleur. Does anybody have an idea on what palette of paint closely resembles this particular rear derailleur?
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2answers
162 views

Chain “jumping” every few crank rotations

After a few pedal-strokes the rear derailleur completely gives out and the pedals drop to catch up. After much googling it says the most common thing is rear derailleur adjustment is needed, so I have ...
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2answers
351 views

Chain hitting front derailleur cage with H limit screw fully loosened

I followed the Park Tools guide to set up my gears. The rear derailleur was a success but I can't manage to adjust the front derailleur so that the chain stops grinding on the guard. There's no more ...
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2answers
151 views

What will be the easiest/cheapest way to get lower gearings on my “new to me” road bike?

I've recently become the proud new owner of a lovely late 90's steel road bike with some not so lovely "old school" gearing (53/39 chainrings and 11-25 8 speed cassette). As someone who both ...
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1answer
94 views

Wahoo KICKR Core Smart Turbo Trainer and Giant CONTEND 1 2017 - Cassette options

I would like know which Cassette should I get for the Wahoo KICKR Core Smart Turbo Trainer I own this cycle: Giant CONTEND 1 2017 - https://www.giant-bicycles.com/gb/contend-1-2017 It has a Rear ...
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2answers
151 views

8-speed MICROSHIFT shifters and ultegra RD-R8000-SS derailleur

I have Decathlon B'Twin Triban 500 with 8-speed MICROSHIFT shifters in the back. I am in the process of turning this commuting bike into my gravel bike. I already added new wheels and 35mm tires, ...
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5answers
2k views

I failed to replace my chain at the proper interval. Will I have to replace my whole drivetrain?

My bicycle is a 2012 Specialized Secteur. It has 6000 miles (10000 km), and I have never replaced the chain. I recently began noticing that the chain always seems out of alignment with the rear ...
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3answers
94 views

GT aggressor 1 frame from 2004/2005 derailleur [closed]

It's a 2004 or 2005 GT aggressor 1. I have looked but can not find the answer. Which derailleur do I need?
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2answers
94 views

Will a 3x10 or 3x9 front derailleur work on a 6/7 speed chain?

Will a 3x10 or 3x9 front derailleur work on a 6/7 speed chain? Can't seem to find a good MTB front derailleur for 6/7 speed chain. Tourneys won't do it for me
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0answers
27 views

Broken Rear mech inner plate

My chain got caught in the guide plate and broke the encircled part of the rear mech (See photo) I'm using Shimano GRX 810 Rear derailleur. There are no observable misalignment. Question, is it safe ...
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1answer
128 views

Will Shimano Acera 8 speed derailleur work on 6 speed freewheel?

I want to get a higher quality rear derailleur from the Tourney which I have right now(it broke). I want a Shimano Acera RD-M360-SGS. The problem is that its 8 speed. Will it work on my 6 speed ...
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3answers
425 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&...
3
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1answer
294 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 ...
4
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3answers
692 views

Can I fit a compact cassette with a long cage derailleur?

my bike currently has a combination of 50X34 crankset and an 11x32 cassette and it looks like my rear derailleur is a long cage. I'm buying new wheels and I want to take the opportunity to try and buy ...
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2answers
70 views

Using a cassette and derailleur with different sprocket/cog specifications

I am trying to make a cheaper (500ish) bike work with a Tacx Flux (2018 version). According to their website, the Tacx Flux only supports 8-11 speed cassettes, but my bike has a 7 speed freewheel (14-...
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2answers
664 views

Rear derailleur max capacity exceeded?

My MTB is a Lapierre X-Flow 512 2012. It has a Shimano RD-M980-SGS 10v rear derailleur which has a total capacity of 41t (see official specs). But it comes with a 11-36 cassette and a 24-42 crankset (...
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3answers
815 views

Rear derailleur at limit, chain still rubbing

I gave my bike a thorough service recently by pulling it apart and cleaning/re-greasing everything. Now everything is back together and I just can't get the rear derailleur to work properly. The H ...
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1answer
180 views

What thread does the b-screw on a shimano rd-6400/6401 have?

What thread does the b-screw on a shimano rd-6401 have? I need to recut the thread but am not entirely sure if it's an M4 fine pitch or something else.
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3answers
667 views

Shifting direction is different for front and rear shifters

I have been riding singlespeed and 1x setups for decades. The last time I had a front derailleur was over 30 years ago, and the shifter was on the downtube then, and I don’t have any memory of how it ...
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2answers
149 views

Can an 8 speed chain fit inside an 11 speed Shimano 105 (RD-R7000 ) rear derailleur?

I am using downtube friction shifters, I know my shifter's pull of 28.5 mm multiplied by the Shimano 105 RD's pull ratio of 1.4 gives me 40mm of travel, enough to traverse the entire width of my 35 ...
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2answers
164 views

Explanation on the lineup of SRAM Derailleurs

@thelawnet has given a very descriptive answer to my previous question which seeks an Explanation on the lineup of Shimano Derailleurs. I am pretty sure that there are people who confuse about the ...
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2answers
147 views

How to increase the durability of gear-shifters

I am not a professional cyclist and may not even be a good rider but it seems like I tend to break my shifters way too often. I initially had a SRAM-X4 8x3 Shifters which ripped apart in an accident. ...
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2answers
424 views

Imprecise shifting on a Shimano 9 speed set

Edit: Jeff’s answer - replace the cable housing - fixed the problem. I made sure the highest and lowest alignments were correct, that the cogs lined up with the gears, and then replaced all cable ...
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2answers
170 views

Shift lever and rear derailleur compatibility

I have got MTB with Shimano RD-M410 Alivio Rear Derailleur 8 speed. It has brake/shift lever for it model ST-EF50-8R. I would like to move to disc brakes and therefore want to change to ST-EF505 ...
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2answers
98 views

8 speed flat bar set up with Dura Ace RD-7700 or new Claris RD-2400

I'm buying a new drivetrain (cranks, cassette, chain) for my flatbar commuter that was mostly built of parts. I currently have a Dura Ace 7700 short cage derailleur on it, I got it from a friend a ...
7
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2answers
1k views

9-Speed Ultegra (6500) with Mountainbike Derailleur

I want to go bikepacking with my old road bike. The road bike has a standard crankset (53/39, double not triple), and an 11-28 cassette. The groupset is Shimano Ultegra 6500. Because I want to do some ...
1
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1answer
91 views

Different Derailleurs with different shifters

I want to install hydraulic disk brakes on my bicycle, however I also need shifters as shifters and brakes are integrated on my bike. I have 3 speed tourney FD TY 500 triple in front and Altus MD310 ...
4
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1answer
65 views

SRAM Red eTap on Ultegra bike

I own a 2018 Cannondale SuperSix EVO Ultegra. When I bought the bike I upgraded the crank set to the Cannondale Spider 52/36. I recently decided to go to SRAM Res eTap. During my install the FD is at ...
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3answers
83 views

How to check and ensure parallelism of front derailer and chainrings?

Various instructions of front derailers with clamp want me to ensure that the derailer cage is parallel to the chainrings. What is the preferred way to do this? Since the derailer cage has quite a ...
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0answers
179 views

Using 11-36t 9 speed derailleur with 11-40t 9 speed cassette

So I've got the shimano altus rd-m2000 and it says that it only supports 11-36t. However, I've seen people on forums say that it's possible with this derailleur. Even it I was wondering if with a ...

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