Questions tagged [derailleur]
Mechanism to move the chain from one sprocket to another.
765 questions
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What type of mount do i have?
Planning to buy a SRAM X.3 not sure what mount I have though. The model is a red and white Mongoose XR75 mtb.
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Simultaneous clang, hesitation and drop when I pedal with any weight
Background: New chain, new bottom bracket, new front derailleur, new shifters, new brakes.
This is a cheap Walmart Mongoose that I'm trying to keep riding and upgraded some of the components recently, ...
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microshift 26 rear derailur won’t shift after adjusting at home
Okay so i broke my bike and had to buy new things, i bought a replacement rear derailur (same one as before) and after looking at multiple youtube videos it still won’t shift. I tried going all the ...
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Derailleur clunks into 7
I have a Shimano 7speed. The shifter goes full range, but when putting it into 7, the derailleur clunks down in a stepwise fashion, especially with increased power applied.
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Rear derailer missing and needing correct one, schwinn with numbers on bike in question..it is a newer model .maybe a trailways but not certain of mo
I have been gifted a schwinn that needs a rear derailer with numbers 365505 snxds 21h16996. Can you assist me in getting the correct derailer?
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SRAM Gx 10 sp detailleur rotates when bolt tigtened?
It seems to be part of the design of the derailleur? Before I had the X7 which stayed put. Unless I have a non compatable dropout for the Gx?
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I can hear the rear wheel spokes brushing on rear derailleur
I have relatively new Shimano Tiagra WH-RS100 700C wheels compatible with 8 to 11 speed, it has 11-32T eight speed cassette. The bike originally came with seven speed freewheel. Although I've changed ...
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Need to know compatible derailleur to my Shimano RD-M3000 Acera 9 Speed
It’s a 2019 Raleigh E-Bike Detour
I have two of these bikes and could not figure out why shifting to high gears would get no response on first click then jump 2 on the next click.
Going to low gears ...
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Compatibility of Shimano Deore SLM570 shifters
My front derailleur is broken. The front derailleur is of the shimano group Nexave, which apparently they don't produce anymore. I am trying to find out which type I should buy that is compatible with ...
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DEORE vs XT derralieus and other components
I've been told that XT is better than DEORE.
Is it only the weight is different or XT are better in other meaning ?
And some follow-up, if XT is better. Does a bike with a used XT is better than a new ...
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Rear derailleur won't shift up from smallest cog to next smallest cog but then shifts ok
I have a 1x10 Deore setup and recently I have been having shifting problems when I am moving up from the smallest cog to the next cog. It won't shift to the 2nd cog but if I shift twice up to the 3rd ...
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Rear shifter cable wont stay in anything but the highest gear
I'm a beginner and I have just bought a Kona sutra, everything was going fine until yesterday when the rear shifter cable developed a problem. When I try to shift up into higher gears it just kicks me ...
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Crank arm rubs on front Deralier
I have a Giant Talon MTB.
I find when I select the largest chain ring at the front, the crank arm rubs on the derailleur.
I've managed to dial it out by using the barrel adjuster.
Now when the middle ...
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How to properly adjust rear derailleur for Wahoo Kickr?
I have a Merida Escultura 100 connected to a Wahoo Kickr (with the rear wheel removed, of course). I've ridden this combination for over a year and had the derailleur adjusted more or less so there ...
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Is it safe to move a di2 derailleur manually?
From my understanding, doing this will damage both the front and the rear derailleurs' servos and / or gears:
https://youtube.com/clip/UgkxQsBoKA0qG0Mfgwo435Xr6aLnD8TOTrRB
However, this is fine since ...
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Is my new M5100 rear derailleur bent, or are they not in line by design?
I just got a new M5100 rear derailleur and when I mounted it on the bike it seems like the cage is not inline. Is this by design or did I got faulty unit?
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Need Hanger Adapter for Acera Rear Derailleur for Hero Sprint rx2 bicycle frame
First I had the Tourney derailleur. Which is somehow destroyed, and I've lost it. I promptly bought an Acera online, expecting to upgrade. A lot has been spent. Here's the issue: I wasn't aware the ...
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How to properly adjust front derailleur height when it can sway significantly once the clamp bolt is loosened up?
I'm trying to adjust derailleurs myself, for the first time .)
the model is DEORE XT
following the how-to
https://www.wikihow.com/Adjust-a-Shimano-Front-Derailleur
the very first step - adjusting its ...
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What derailleur hanger is this and what is actually compatible and what needs changing?
Bought this bike second hand. Obviously these are not stock components here, the rear derailleur should not be direct mount. I can not seem to find the specifications for the hangar anywhere. Also I ...
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Shimano 11/42 cassette, 11 speed derailleur compatibility
Existing trek domane SL6 (2021) with ultegra 11speed mechanical gruppo
shifters r8020
fd r8000 with 2x 46/34
rd r8000 11spd 11/34
To get shorter gear inches, looking at changing to 11/42 ( or 11/46) ...
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pedals only move bike at highest gear
Recently my bike will only move if I’m in the highest gear. I can pedal at lower gears but it will not move my bike forward at any reasonable speed and when I get up to even a very low speed the ...
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Sram AXS derailleur does not shift
Have you encountered a problem where a rear AXS derailleur stops shifting? Any suggestions?
I bought a mint 2023 GX AXS derailleur on Marketplace, it worked for the first short test ride on a road but ...
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Vintage derailleur identification
I have a vintage Shimano derailleur that I'm trying to identify, specifically to figure out which jockey wheel set is compatible as mine badly need replacing. The derailleur is marked "Shimano ...
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Order of setting up new shifting system
I'm getting close to being finished with my Trek 520 frame-up build (with custom drivetrain). The only thing that remains is cabling the front and rear derailleurs, setting the limit screws and ...
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SRAM 1:1 shifter + Shimano 11 speed MTB RD
I'm planning my next bike build with an 11-50 cassette but I don't want more than 10 gears for personal preferences. I've seen Chinese-brand drivetrains (LTWOO) that can do this but I want something a ...
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What size front derailleur do I need for a 11/32 cassette and medium rear derailleur?
Upgraded 11/32 cassette. looking for replacement front derailleur
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Which rear derailleur can I put instead of Shimano Acera
My rear derailleur on Cube Aim Race 29" has broken on the holder. Except for this (and prior to the holder breakage) the derailleur has completely stopped working for some reason. It twists into ...
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How can you determine that your derailleur is bent?
I have no experience adjusting the derailleur until recently. I followed the nice instructional video from Shimano. After I finished with the bike, a final test on the rack showed I was able to spin ...
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Slight play in rear derailleur
for the first time I am doing basic drivetrain maintenance and I noticed slight play in my rear Shimano XT 12SPD mech. It does not occur at the place where the derailleur is connected to the hanger ...
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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, ...
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What's going on with the bonkers derailleur?
My friend changed her tyre with the bike upside-down, struggling to slot in the axle and the derailleur just fell off from pressure with her bare hands.
She is far away so I need to understand what ...
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Any fixes for pinch bolt crimp refusing to lock in place?
My cable shifter couldn't be secured in place because the stub of the metal shifter clamp keeps sliding over the derailleur's metal surface when applying torque to the bolt.
The clamp, instead of ...
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Does anyone make dummy batteries for eTap AXS derailleurs?
I just got a new Specialized Roubaix Expert with SRAM parts. I discovered that lengthy car rides drain the batteries because the derailleurs are triggered into activity by motion.
Solution? Take the ...
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Sora front derailleur cannot reach top chainring cleanly
I bought a new bike specced with a sora front derailleur and left brifter. I've been unable to make the front derailleur shift properly. I sent a message to the manufacturer (no response yet) but I ...
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Altus 9-speed shifters&derailleur paired with a 10-speed road bike cassette
My family has a road bike, set with Altus 9-speed shifters and a rear derailleur, paired with a Shimano HG200-9 cassette.
Recently, I replaced the cassette with a 10-speed road bike cassette,
As a ...
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rear derailleur installation
Today I installed my new rear derailleur and chain. I am not completely satisfied. My questions are..
Is my cable clamp routing correct? I know my cable is frayed, i will use a new one.
Did i install ...
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Chain repeatedly slips on rear cogs to next higher gear...and sometimes back and forth. What to adjust?
EDIT: Just to be clear, everything has worked fine with the bike and the Kickr up until a few weeks ago (that is, for about six months the combo has worked fine). So something's gone a bit out of ...
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Shifter only clicks in one direction
My bike shifters on both the front and rear derailleurs suddenly stopped wanting to shift down. They both shift up no problem and the cable looks fine but when I try to shift down on either of them ...
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Replacing a hanger mount derailleur with a direct mount derailleur
I got a low-quality walmart bike for free in decent condition. I am trying to make it rideable. I have given up on the stock derailleur and bought a cheap shimano tourney direct mount derailleur to ...
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Unable to backpedal - jockey wheels on Campagnolo derailleur
I have Campagnolo Athena rear derailleur on my road bike. Never gave me a hint of trouble. Always kept clean and lubed. Never ridden in the rain or in dirty conditions.
Yesterday I was not able to ...
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Beginner breaks rear derailleur, what might have gone wrong?
I broke the rear derailleur on a borrowed bike. I'm trying to understand why.
Until two months ago I knew nothing about bicycles. I bought a worn down cheap second hand bike. It took me way more time ...
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Chain Links remain raised (i.e. sticky link)
I was trying to adjust my rear derailleur but I heard a noise. I found that when the chain went through the pulleys one link of the chain stayed up and made a noise.
How do I fix this?
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Derailleur hanger repair interferes with highest gear
Bike was in the shop recently and they said they needed to repair the derailleur hanger threads, which is integrated with the frame. They said they would repair the threads with a helicoil.
When I ...
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9 speed chain on 8 speed derailers to reduce chain rub
I'm getting some chain rub on the hardest gear in the front and 2 hardest gears in the back where the chain hits the front derailer cage outer side. When I spin the pedal it seems like the chain is ...
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Changing a derailleur
Can I change a deraiileur? Where is one suitable for this bike?
I commute about 40km round trip. Both my bikes were stolen last night and I recovered one dumped nearby with the derailleur broken and ...
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Why aren't derailleur hangers made into standard shapes?
That small piece of metal can render a bike unrideable, and sometimes a repacement is impossible to find.
There are standards for headsets, bottom brackets, brake mounting points, OLD and dropouts, ...
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Shimano 105 r7000 front derailleur hard and clunky shifting, shifter harder to shift
A total newbie to DIY bike repair here, and my Shimano 105 r7000 FD is shifting really harshly after a wash. Washed it with dish soap plus water solution, however I did not give the FD any specific ...
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Upgrading my shimano road groupset, compatibility issues
I'm in the process of upgrading my road bike's groupset, since it's quite old now.
I don't want to blow my budget so I wish to upgrade as little as I can with the most impact. I currently ride my road ...
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Can any front shifter be used for 3 x 9?
I want to buy a new front shifter for my 3x9 speed MTB. The XTR M970 shifter is rare and expensive. Can I just use the front shifter from a 2/3 x 10 system? e.g. Shimano XTR M980 ? Are Shimano front ...
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My ultegra front 3x derailleur adjustment screws are seized and the shift is unreliable into the small cog. Can I replace it with something similar?
I need to replace my 15-year old Ultegra triple front derailleur. I can't find the same model for sale online. What alternative options can I try please?
