How to tell if derailleur is bent A derailleur hanger, also known as a mech hanger or dropout hanger, is a small, replaceable part of a bicycle’s frame. In the future, build bikes better, know that the bike going out the door is working perfectly, and it will give you the confidence to explain to the customer what happened to their bike, so they are aware of what they did. Checking the highest and lowest gears will probably show you. Looking at the derailleur and hanger, it's really hard to tell which it is. This video covers the process for Shimano style derailleurs. Lastly, inspect the rear derailleur for damages, broken jockey wheels, bent parts, or broken springs. Sometimes, the bend is even visible if it is big enough. The derailleur must be taken off for that check. I put on a new hanger, and threw on my cage from my old X01 derailleur. Shifting troubles can be extremely frustrating, mostly because the main source of the problem is often overlooked. 1. Aug 3, 2017 · How to Straighten a bent DerailleurTo see our 2017 E-Bikes and conversion kits Visit us @ https://augustineebikes. BASIC REAR DERAILLEUR ADJUSTMENT ONE OF THE GREAT THINGS about modern derailleur drivetrains is that they're easily fine-tuned should the need arise. Sep 11, 2023 · A loose or bent hanger can allow the derailleur to shift into the spokes if you don't have a spoke protector. Is your rear D in the same plane/parallel with the back wheel? With 12 speed, if your derailleur is bent you will notice it in the shifting. Then you should replace it or have it repaired. The process is different for different generations of SRAM mechs. Impossible if you don't ( and no We would like to show you a description here but the site won’t allow us. Also, know that on bicycles with aluminum derailleur hangers, which is the most common type today, it doesn’t take much force at all to bend the hanger like this. How to Front Derailleur Troubleshooting and diagnosing. Bent derailleur hanger If your rear derailleur is shifting poorly, not staying in gear, and appears to be bent or out of alignment, check first whether the derailleur hanger is bent. Often when I can’t get a bike to shift quite right I throw the alightment fixture on even though the hanger looks quite good, I’m often amazed at how bent or twisted they are. How do I know if my derailleur is damaged? Quote from video: The key is to look at the rear derailleur we can If your derailleur hanger is bent it will be pretty much impossible to get your gears to index properly. Typically made from aluminum or other metals, the derailleur hanger is designed to be a sacrificial part that bends or breaks under stress, protecting the more expensive frame When a derailer hanger is bent, it is generally necessary to remove the derailer to straighten it. Finally, test the shifting and make any further adjustments until it runs smoothly. You click the shifter but the chain doesn't quite engage the next gear the way it used to. Maybe a little. com Feb 23, 2022 · Sometimes, you can visually confirm that a derailleur hanger is bent by looking at your bike from behind. May 30, 2023 · I would bent it a little back and see if it improves. Shift through all front gears while pedaling to confirm crisp, hesitation-free shifts without chain rub or overshooting May 19, 2023 · What should I do if my derailleur hanger is bent or broken? If the derailleur hanger has taken a knock, it can often be bent back using a specific derailleur hanger alignment tool. It's in pretty good shape. Tighten the bolt and test the gears. Ensuring Smooth Gear Shifting: The derailleur mech hanger holds the rear derailleur in place, allowing it to move the chain between gears smoothly. The rear should hang parallel to the plane of the bike. If you would rather buy the tool yourself, you can purchase it from any bike tool supplier. It can usually be bent back (with the appropriate tool preferably), or replaced if it breaks Your local LBS should be able to bend it back, as it’s only bent a little bit. Steps to diagnose a broken rear derailleur gear cable The derailleur rarely gets bent, it's the hangar that's the problem. Aug 16, 2023 · A braze-on derailleur is what the front derailleur attaches to. A slightly bent or damaged hanger can lead to misaligned gears, causing problems with shifting or even chain loss. The “Inline Cage” is angled by design. May 20, 2010 · If you find that you cannot find a balance between perfect upshifting and perfect downshifting through cable tension then your derailleur hanger may be bent. Here's how If you're new to working on bicycles, and want to troubleshoot a shifting issue, you likely will be short a few tools. You also need to check your high and low limit on that RD. Look for any visible signs of damage, such as fraying or a completely snapped cable. If this happens you will have broken or damaged spokes. If the derailleur is too damaged, it may need to be replaced. Feb 6, 2011 · What I'm curious to know is whether anyone is aware of other parts on the derailleur that can get bent and be responsible for an out of alignment derailleur? I've checked it over and nothing seems obvious. Yes. It is possible to The best way to check if your derailleur hanger is bent is by looking at it to see if it's bent, if it looks bent, your derailleur hanger is bent. I'd wager this is a derailleur hanger out of alignment and the derailleur adjusted to shift well. You can also tell if it’s bent by sighting from behind to see if an imaginary line that passes through both derailleur pulleys also bisects the cassette cog they’re beneath. How To Check For Bent Rear Derailleur Cage / Hanger - What Options You Have | 4K h Jan 11, 2024 · The hanger is weaker than the derailleur, by design, because it's inexpensive and meant to bend in order to protect the much more expensive derailleur. this would better with a dropper post and a touring-bike kickstand as it's a lot of getting on and off and throwing legs over things. After I installed everything, I tried out my shifting, and it's garbage. co Sometimes, you can visually confirm that a derailleur hanger is bent by looking at your bike from behind. Usually, this takes the form of poor shifting, but with a severely bent hanger, the rear derailleur could potentially jam into the rear wheel, resulting in catastrophic damage and likely a crash. Hanger alignment: you can see if your derailleur hanger is misaligned by looking at it from behind the bike. Looking closer, it looked like the derailleur hanger was bent. In part one we covered common ways they’re bent and the shifting problems caused by bent hangers. Dec 29, 2023 · Adjusting bike gears is essential for maintaining effective and consistent shifting performance and avoiding issues with the drivetrain. Take to shop and ask them to check with DAG. In order for your drivetrain to shift Are you having shifting problems? It’s way more likely your hanger is bent then your derailleur or your frame but if you are having shifting problems I’d take the bike to a quality shop and have them check the hanger and frame alignment to be sure. Feb 22, 2024 · Visual inspection: Take a close look at the rear derailleur and examine the cable. Bent derailleur or hanger? How to test it with no tools. My LBS owner says it's the SRAM chain. How to measure and correct alignment of the derailleur hanger, a common source of bicycle shifting issues. May 22, 2022 · The front derailleur is the mechanism that shifts the bike chain between the front chainrings, enabling smooth gear changes. Or you can replace the hanger if you have access to one. , Shimano, SRAM, Campagnolo), bike type (road, mountain, gravel, touring), mounting style (standard hanger or direct-mount), and shifting type (mechanical or electronic: wired or wireless), as these distinctions help match derailleurs to the correct drivetrain system, frame Aug 15, 2020 · How do you know you’re going to need to fix bent chainring teeth? A tell-tale sign of bent chainring teeth is the fact that your shifting doesn’t work as it should. Get to know your Derailleur Yes, it’s fairly straightforward. There are tons of video's on youtube showing how to adjust derailleurs (assuming you don't already know how). I have problems shifting from the largest cog to the smallest cog, despite messing with the limit screw. Do this by shifting through all the gears. Do you have the old derailleur? I've checked the derailleur cage and it seems straight, as you can see in photo 3 (maybe I'm not checking it right) and the pulleys are aligned, so is it possible that the "parallelogram" part of the derailleur is bent ? I couldn't find any technical documentation from sram to check the alignment and tolerances, so do you know how to control it? Cages will always look bent but your upper pulley wheel doesn't look aligned either. That will make it catch the chain and may throw it inside on downshifts. Oct 7, 2025 · Know when to seek professional help – If chain skipping persists across multiple gears, you notice bent derailleur hangers, or compatibility issues between components, don’t hesitate to visit a bike mechanic for proper diagnosis and repair. A shop can check the alignment with a gauge that screws into the hanger. Oct 29, 2021 · A bent hanger is going to affect shifting and put extra strain on the chain, and you risk the cage hitting the spokes when changing to the largest sprocket. Apr 19, 2018 · The derailleur cage appears twisted around a vertical axis (the 'front' of the cage seems to be pointing outwards). Aug 18, 2017 · Consequently, if either the derailleur or derailleur hanger are bent, it’s best to take it into your local shop for a remedy. Jan 27, 2025 · Learn how to adjust road bike derailleur gears with this guide. Crashing your bike or knocking it while moving can cause your rear derailleur to hang at an angle and wreak havoc on your gearing How To Install a Rear Derailleur How to True a Wheel How to Remove and Install Your Wheels Today we’ll learn how to straighten integrated derailleur hangers. By Jim Langley Jim’s Tech Talk This is the second article on repairing bent derailleur hangers. Then you don’t have to replace it! Purpose of a Derailleur Hanger The derailleur hanger connects the rear derailleur to the frame. Jul 3, 2020 · A bent derailleur hanger can be caused by a bike falling on the drive side. Once bent, the derailleurs and pulleys are not going to align with the sprockets. First, assess the Jun 11, 2013 · No, something's bent, probably the derailleur hanger. Apr 30, 2010 · Your bike's drivetrain is really a simple system, and if you know what to look for, you can easily repair your derailleur yourself. The hanger looks like it's still flat (and sits flush on a flat surface), but I guess it only has to be a fraction off to cause the derailleur to sit a Struggling with frustrating shifting issues like gear slippage, chain skipping, or poor derailleur movement? This comprehensive guide explores how a bent or misaligned derailleur hanger could be the culprit. 1 My rear derailleur took a knock from a fall, and the entire shifting range moved inwards by about one sprocket width. A bent derailleur hanger typically rotates the cage around a horizontal axis (kicks the lower jockey wheel inwards). Jul 29, 2021 · When your derailleur spring breaks or gets bent, it may be time to replace your derailleur. ) if your chain doesnt seem to be damaged, I would move onto the derailleur itself. When damaged (usually bent hanger is a as a result of a fall of the bike), it can be bent. And… Mar 18, 2022 · Derailleur Hanger Alignment In 10 Easy Steps Nothing will derail your ride more than rear-derailleur problems. It's important to notice however, because once the derailleur is bent, bad things can happen such as shifting into the spokes, which may ruin the derailleur and might seriously damage the rear wheel and frame. Jul 29, 2017 · Front Derailleur — Advanced Troubleshooting This article will review the common sources of poor front derailleur performance and how to fix them. Something is certainly bent, but it’s probably the derailleur hanger (which by design bends more easily than the derailleur or frame itself). When I started moving the bike the rear derailleur was caught in the Jun 6, 2025 · Table Of Contents Key Takeaways You’ll know your derailleur hanger needs alignment when you experience skipping gears, chain noise, and hesitant shifting that cable adjustments can’t fix—these symptoms indicate the small aluminum piece connecting your derailleur to the frame has been bent from crashes or rough handling. And… May 16, 2025 · If your derailleur hanger is even slightly bent out of shape, your drivetrain won’t work properly. The derailleur hanger is specific to the frame. A derailleur hanger (or mech hanger) is not a part most people are aware of, but the sacrificial mount for the rear derailleur can cause shifting to go completely wrong if even a little bent out Apr 8, 2021 · Top pic sure seems to show an angle that should not be there. And if your hanger is completely broken, basically your whole bicycle becomes rather useless. Adjust the limit screws and cable tension as necessary, ensuring the jockey wheel and chain are aligned properly. A bent or broken derailleur will never shift properly. Dec 12, 2017 · I got a stick caught in my derailleur and something is totally bent. This worked fine, as far as I can tell. Fix shifting issues, fine-tune performance, and keep your ride smooth and efficient! Apr 18, 2021 · showing you how i bent back my bent shimano xt rear derailleur rd-m750 check my patreon for exclusive videos! / garysprojects if you like, support the channel here! shop: https://garysprojects Aug 30, 2015 · How to measure and correct alignment of the derailleur hanger, a common source of bicycle shifting issues. Oct 11, 2015 · Started off trying to tweak straight a slightly bent derailleur cage (after checking the hanger was OK). Thought I'd take the derailleur off to pop the cage in a vice and do it "properly". I bent it back, but plan to order a better one off the derailleur website. Start by examining if your derailleur hanger is bent, as this can cause significant issues. Jul 29, 2017 · 3 Bent Hanger T he rear derailleur is attached to the frame with a hanger. I would just visit my LBS. I would suggest ParkTools. There are tools to bend it back and align it properly, a bike shop can do it in a few minutes. The good ones are a bit pricey. IEyeballing the hanger from the rear only gives you a part of the picture, if the hangar is twisted at all I've bent (again) my derailleur hanger. Some shops will That part of the frame that holds the derailleur is called the derailleur hanger. If this happens, you could be looking at even more problems: like broken spokes or a broken derailleur. For precise assessment, a control gauge or an alignment tool helps. Search Results for: how to tell if rear derailleur is bent Bent Derailleur Hanger A bent derailleur hanger is an extremely common problem which can cause shifting issues and even cause your chain to shift into the spokes. It always points the chain towards the chainring – in any gear, helping achieve the smooth and quiet operation of Eagle Transmission in all cogs. Then, loosen the derailleur bolt and manipulate the derailleur to straighten it out. I say check hanger alignment first and go from there. I'd say the derailleur cage does look bent in this photo, but that may be a distortion created by the too-close perspective. It gets the name "braze-on" from the brazing torch that's used to attach the front derailleur to the metal frame. A bent hanger will make your chain jump between gears unpredictably. I think the frame derailleur hanger is bent, and needs to be straightened, preferably with a proper alignment gauge for best results. Bike shops have a special tool, a bar with a sliding gauge on it, that screws into the hole in the hanger in place of the derailer. It’s a 1x11 drivetrain with a shimano slx derailleur and xt chain Oct 10, 2023 · The Easy How-To Guide for Adjusting & Tuning a Mechanical Rear Derailleur Mechanical rear derailleurs are easy to tune at home, as long as you know what each adjustment screw does. Aug 14, 2025 · There are many crucial parts of a bike, like the derailleur hanger. May 22, 2025 · What are the types of bike rear derailleur? The types of bike rear derailleur include classifications based on brand (e. My hanger was destroyed and my cage was severely bent. The beauty of the Park tools DAG is that it gives you enough leverage to tweak the hanger as well. You can adjust your bike derailleur to fix most problems with shifting gear. If the hanger isn’t bent too badly, you can straighten it out. If it is bent after a fall or hitting a rock, it is often no longer possible to adjust the gears properly. Jul 13, 2022 · If your derailleur is bent, poorly adjusted, or just a bit old, you will not get precise and accurate shifting when you need it. Here's how to diagnose most shifting issues on a rear derailleur with just Apr 21, 2019 · It does look bent, the inner and outer plates should present parallel faces to the chain. It’s the first thing I use when the rear isn’t shifting correctly. I'm wondering what you do when you bend a derailleur hanger -- do you replace only, bend back only, or bend back to ride while the replacement is on the way? May 12, 2022 · Replacing a derailleur hanger is a crucial bike maintenance task that ensures smooth shifting and protects your frame from damage. It’s a sacrificial piece for a good reason. That derailleur had already been abused, but it looked usable. Jan 11, 2024 · It is more likely that the hanger is bent. Discover essential tools like alignment gauges In this video I explain how to check for bent rear derailleur. Straightening your hangar is easy if you have the tool. May 31, 2024 · I am pretty tolerant of bad shifting, so I've run mine with a broken off barrel adjuster at the shifter, a kink in the cable, a kink in the housing, bent hanger, and bent derailleur. I'm not completely convinced but getting there. The derailleur hanger is the piece of metal that the rear derailleur attaches to near the rear axle. Maybe these bikes were transported in the truck of a car, and the derailleur hangers were bent during transport. When simple adjustments don’t fix your shifting woes, it’s time to check and see if your derailleur hanger is properly aligned. It checks that the hole is perpendicular to the plane of the rim. Just remove the derailleur mounting bolt (you can leave the cable attached) and screw the wheel into that hole - then compare how Apr 6, 2025 · This will hopefully show whether the derailleur and derailleur cage are parallel to the main plane, as they should be. The most likely cause for this is a shift • Rear Derailleur - Advanced Troubleshooting ︎ • Rear Derailleur - Advanced Troubleshooting • How To Align a Derailleur Hanger Using the DAG-2. One of the most common parts affected is the derailleur hanger. You would need a derailleur alignment tool and then likely have to redo your indexing. Ensure that the derailleur cage is parallel to the chainrings and the derailleur is properly A derailleur hanger alignment tool is about $40-$50 from Amazon. May 19, 2024 · To fix a rear derailleur on a mountain bike, start by shifting to the smallest gear, loosening the derailleur cable and checking for any chain damage. A spare derailleur hanger probably costs ~15€ and is always good to have because it can take weeks to ship 3 Bent Hanger T he rear derailleur is attached to the frame with a hanger. You can straighten one without any special tools you just can't know if it's actually straight without a special tool. If the bolt for the derailleur mount gets bent, you won't be able to thread your tderailleur back into the hanger. That’s the piece between the bike frame and the derailler. I suspect, but am not sure, that the mech hanger got slightly bent (could be completely wrong, not really sure how to tell). But i would always have a spare derailleur hanger on hand. The pictured derailleur cage is, without a shadow of a doubt, bent. Replacing springs on derailleurs can be difficult and sometimes the springs are attached to rivets on the derailleur, so it’s impossible to remove the broken/bent ones or fix new ones. If a hanger is straight, the rear derailleur pulleys and cage will be vertically aligned with the cassette cogs. Jun 6, 2023 · If your gears aren’t shifting properly and you can’t get them to index, a bent derailleur hanger can often be the culprit. Aug 14, 2021 · How can you tell if a hanger is bent? Most of the time, it’s not visible to the eye if a hanger is bent or not. As a mobile bicycle mechanic, I’ve seen countless cases where an unnoticed bent hanger leads to poor shifting, premature drivetrain wear, and even costly Aug 14, 2023 · Chain Drops: If your chain frequently drops off the chainrings, there might be an issue with the derailleur’s height adjustment. In this article, we'll guide you through the steps to identify, assess, and fix a bent derailleur hanger, ensuring your bike remains in top condition. i Find that even a slightly bent hanger can screw up shifting. It’ll pay for itself by avoiding just one visit to the LBS and gets you riding quickly. The derailleur hanger connects the rear derailleur to the bike frame and is designed to bend or break under impact, acting as a sacrificial part. If not, the derailleur or the hanger got bent and will need to be fixed. Asked by: Dan Aukuso What causes a derailleur to snap? Some common reasons for it breaking are: Hitting an obstacle (e. How do you know? Usually, the symptom that tips you off that adjustment is needed is hesitation during shifts. Jul 9, 2024 · If you’ve ever had to replace a bent or broken rear derailleur hanger, you’ll know how hard it is to find a spare. That makes me think the derailleur is bent rather than the derailleur hanger. Every bike seems to have a unique design. May 7, 2021 · (I know its pedantic but the cost of a chain vs replacing a der. If the shifting is good then you have nothing to worry about. Alternatively you can replace the derailleur hanger which is the part that bends. The rear shifting will be out of whack if the hanger got bent. Hope this helps. See full list on biketestreviews. First, loosen the pinch bolt and let the derailleur run on the smallest cog. SickBiker 368K subscribers Subscribe Apr 22, 2019 · Took a nice little spill on my Bronson earlier today and bent my derailleur cage. Bike rear derailleur adjustment is a fundamental part of tuning gears as the rear derailleur guides the chain from cog to cog on the cassette. And it’s made to bend or break on impact. The derailleur hanger is designed to bend in case of an impact. Determine if is the shifter, cable, and housing or th Bent derailleur hangers can cause several issues. Knowing how to identify, remove, and install a new hanger can save you costly repairs and keep your bike performing at First, a little background derailleur adjustment is dependent on three things: Derailleur alignment, this is the derailleur's alignment relative to the frame and drivetrain. It's easier to tell by looking at the derailleur cage. awin1. My other bike with Shimano 105 (run with shimano and KMC chains) does this Your rear mech is one of the most vulnerable parts of your bike. Once bent, you might not even notice that the shifting isn’t as crisp as it was before and just keep riding as usual. You can do that by holding down the button on the junction, but not too long. To check your work, eyeball the alignment first and then thread your derailleur back into the hanger and use the policing cage as a guide that you can compare to the cogs above it. It connects the derailleur (the mechanism that moves the chain between gears) to the frame itself. These are commonly aluminum but may also be steel. How To Check For Bent Rear Derailleur Cage / Hanger - What Options You Have | 4Khttps://amzn. Look for your tools at Wiggle through our link:Wiggle: https://www. The outer plate looks like its lower aft end is bent inwards. g. Oct 29, 2021 · If your derailleur takes a hit during the ride, the derailleur hanger (sos hanger) purpose to absorb the impact. I’ve straightened a few that are that bent. Sight from behind the bike and see if the hanger looks parallel to the wheel and sprockets. Jun 5, 2025 · I tore into it tonight, and sure 'nuff, my derailleur was bent. This article will help you understand what each part does, how to […] Accidents Happen If you do manage to crash or drop your bike and bend the derailleur, you might not notice. This quick guide explains what your rear derailleur adjustments are, and what they can potentially fix. In this video I explain how to check your bike for a bent rear derailleur. . Jun 6, 2011 · I can't tell you how this has vexed me. Inspection of the bike afterwards saw relatively minor damage to the handlebar grip, the saddle and the point where the rear derailleur is mounted on the frame. Luckily, Doddy has some tips on how to straighten a bent mech, get your gears working again, and avoid a long walk home. How to tell and/or fix a rear derailleur that's been bent inward I tried something silly the other day and took my bike w/racks and bags and biked a disc golf course using the bike as my caddy. Shifting problems caused by a bent derailleur hanger are quite common. But often, the real culprit is something small but crucial: your derailleur hanger. Fear, not people, where there is a "whe May 19, 2024 · To fix a bent derailleur on a mountain bike, first shift the bike to the smallest chainring and cog. You can eyeball the derailleur cage alignment by looking down the chain-line from the back of the bike – see image below from this question. But a typical symptom of a misaligned hanger is the rear derailleur will shift fine for a few gears, only to lose adjustment while shifting further up or down the cassette. The right way to straighten one is to replace the derailleur with a Park Tools DAG and use that to both measure alignment and provide leverage to bend it back. I was wondering if maybe my derailleur was bent, and if so, can I bend it back, or would I have to get a new one. The result is poor shifting even after all other When your bike isn’t shifting quite right, or your rear derailleur seems just a little off, you might assume it’s a cable issue or a bent derailleur. But after I take off the chain, I tried spinning the jockey wheels with my fingers (. tree branch) Going into the spokes (badly set low limit screw or the derailleur was wobbling enough for some reason to get caught in the spokes) Chain too short. This can happen if your bike is dropped, crashed or bumped, or if it was poorly aligned at the manufacturer. From all that you describe, it seems like you have a bent cage (even ever so slightly). for the derailleur itself, the outer part of the cage looks off, but the inner part looks fine and the jockey wheels look like they're pretty in line with each other. How could the chain have more to do with the shifting to the big ring than the derailleur, but maybe it does. tiny misalignments can make for bad shifting. Crashing or throwing the bike down on the right side can bend this hanger. To check your front derailleur, ensure it is properly aligned about 2mm above the largest chainring teeth, with the cage parallel to the chainring. Best thing to do here is bend it back so it's straight or buy a new one. If the gear hanger gets bent or damaged, you will need to replace it. It's a replaceable hanger but for this summer I can't get an original one and I know that the non-original one I can get is made in a harder material and could possibly damage the frame. Pro tip: Hold a ruler against the derailleur's pulleys to see if they align vertically; any discrepancy might indicate a bent derailleur or hanger. comIf you enjoyed this video, SUBSCRIBE to It's always hard to tell from a photo, but it doesn't look bent. In my case I actually heard a noise when I was in a certain gear and felt movement through the crank with each rotation. I have SRAM force but the problem you describe is exactly what I've experienced. Derailleur Hanger: The derailleur hanger should be exactly straight, and the rear derailleur should be firmly screwed into it. Mar 22, 2024 · Derailleur hangers are there to protect your frame from damage, but are prone to bending themselves. What to do with a bent derailleur hanger??So I bent my rear derailleur, and I don't have the correct tools to fix it. If they still do not shift properly, it may be necessary to adjust the limit screws. Fiddling with the derailleur without it being aligned is often useless. May 16, 2025 · If your derailleur hanger is even slightly bent out of shape, your drivetrain won’t work properly. Feb 17, 2025 · Symptoms of a bent derailleur hanger include difficulty shifting gears smoothly, chain skipping, and noisy operation. In most cases, if you find this kind of damage, the rear derailleur will need to be replaced. Oct 5, 2024 · The issue described Sounds like a bent hanger. 2 ︎ • How to Align a Derailleur Hanger We would like to show you a description here but the site won’t allow us. How to check the alignment of and if necessary adjust your rear derailleur hanger. In my case, the brakes on my front wheel locked it, flipping me over the handlebars. It absorb Feb 24, 2025 · From what I can tell from bench testing, the override clutch doesn’t seem to do anything in that direction, which is also substantiated by the number of outwardly bent derailleur cages I’ve personally experienced, in addition to the growing number of similarly bent cages I’ve seen and heard about. No matter what brand, model or style of rear derailleur you have the axes around which the pulleys rotate should be parallel to each other. It is possible to Jul 9, 2024 · Derailleur Cage Misalignment: If the entire derailleur cage appears to be misaligned, it could be due to the stress placed on the system by a bent jockey wheel. Jul 18, 2016 · Wow, that looks like a hot mess If you don't own a derailleur alignment tool to straighten your hangar, you need to take it to a shop. Aug 5, 2019 · A bent derailleur hanger means you’ll likely never get your rear derailleur shifting just right. The derailleur hanger keeps the rear derailleur aligned perfectly Aug 28, 2025 · How to check if your derailleur hanger is bent We take every step to make sure your Ribble bike arrives safely, but sometimes damage in transit can occur. but not necessary. Is it possible that I switched out my severely bent cage with a slightly less bent If you’ve tried adjusting your rear derailleur but still can’t get your bike to shift right, the most likely cause is a bent rear derailleur hanger. We would like to show you a description here but the site won’t allow us. The derailleur cage and jockey wheels should make a straight line with the sprockets at each gear position. This repair is meant for steel frames with integrated hangers. I am refurbishing a bike and am deciding how much to clean out the rear derailleur. They make a special tool for it or you can do it with a wheel (the front wheel of that bike if it is also bolt on). According to this diagram from SRAM on page 56, it doesn't look Aug 23, 2024 · A bent derailleur hanger can significantly affect the performance of your bike, leading to poor shifting and potential damage to your drivetrain. It looks like the derailleur hanger is bent. This derailleur is jammed or sticking in place. Front Derailleur — Advanced Troubleshooting This article will review the common sources of poor front derailleur performance and how to fix them. Here’s a basic overview for first timers. However, when checking if it's bent, if you see the hanger looks straight, it likely isn't bent, and the problem is something else. Have a look at your rear derailleur from behind your bicycle , it should hang down straight from your rear dropout; if it is tilted to either side; something is bent and your best bet is to take it to your local shop. There are tools to check for that and bike shops have them. Park makes a great tool for checking the alignment and adjusting it. I show how to fix a bent derailleur hanger without expensive tools like Park Tool's DAG-2 Derailleur Hanger Alignment Gauge. To identify a bent derailleur hanger, visually inspect it for any signs of Replacing a broken derailleur can be an intimidating project, but it’s really not that difficult. Inspecting the Derailleur Carefully examine the front derailleur for any visible damage, such as bent or broken parts. It’s a simple device that easy to use and money well spent. The hanger is a sacrificial component that connects your rear derailleur to the frame. Step 2, A man has got to know his limitations Before attempting to adjust the derailleur properly, set its usable range. How to check if your derailleur hanger is bent We take every step to make sure your Ribble bike arrives safely, but sometimes damage in transit can occur. There is a specific tool found at most bike shops that allows you to diagnose and fix a bent derailleur hanger. By identifying these signs, you can confirm if a snapped rear derailleur gear cable is the root cause of your bike’s shifting issues and proceed with the necessary repairs. I know your post isn’t current, but I just got the new T-Type - previously had gen 1 AXS GX and loved it - the bike is new in stand still being assembled and the derailleur looks bent to shit and shifts terribly and micro shift doesn’t do much. It keeps the rear derailleur perfectly aligned with the cassette cogs. Derailleur hangers are made of soft metal and can bend easily. Learn to identify telltale signs such as inconsistent shifting, chain rubbing, frequent derailments, and visible hanger damage. However, I have just popped the mech back on the frame, and it is now failing to take up any of the chain slack. The derailleur pulleys should be in perfect alignment (parallel) to your cassette cogs. I noticed the derailleur seemed to be sitting at different angle than the cogs on the cassette. I've flipped bikes that saw a crash or two with something bent in the rear mech, and if the derailleur is low end I just replace the whole thing for the sake of time and guaranteed smooth shifting. Find out how to straighten your bent mech hanger with this guide No, your derailler hanger is bent. Mar 13, 2022 · only way to tell for sure regarding hanger alignment is to put a hanger alignment tool on it. Alignment tool is a good investment. Apr 21, 2024 · Did you know that 90% of derailleur issues stem from poor shifting adjustment or worn parts? If your derailleur still isn’t shifting properly after adjustment, common problems include bent hangers and cable tension issues.