How to tell if derailleur is bent I'm not completely convinced but getting there. The “Inline Cage” is angled by design. 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. Learn to identify telltale signs such as inconsistent shifting, chain rubbing, frequent derailments, and visible hanger damage. For precise assessment, a control gauge or an alignment tool helps. Maybe a little. If they still do not shift properly, it may be necessary to adjust the limit screws. And… May 16, 2025 · If your derailleur hanger is even slightly bent out of shape, your drivetrain won’t work properly. This worked fine, as far as I can tell. You can do that by holding down the button on the junction, but not too long. If it is bent after a fall or hitting a rock, it is often no longer possible to adjust the gears properly. 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. This derailleur is jammed or sticking in place. Determine if is the shifter, cable, and housing or th Bent derailleur hangers can cause several issues. 1 My rear derailleur took a knock from a fall, and the entire shifting range moved inwards by about one sprocket width. If the gear hanger gets bent or damaged, you will need to replace it. SickBiker 368K subscribers Subscribe Apr 22, 2019 · Took a nice little spill on my Bronson earlier today and bent my derailleur cage. If the shifting is good then you have nothing to worry about. 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. If the hanger isn’t bent too badly, you can straighten it out. Take to shop and ask them to check with DAG. Yes. Lastly, inspect the rear derailleur for damages, broken jockey wheels, bent parts, or broken springs. 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. How to measure and correct alignment of the derailleur hanger, a common source of bicycle shifting issues. Inspecting the Derailleur Carefully examine the front derailleur for any visible damage, such as bent or broken parts. 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. 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. I have problems shifting from the largest cog to the smallest cog, despite messing with the limit screw. It's easier to tell by looking at the derailleur cage. A shop can check the alignment with a gauge that screws into the hanger. 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. Asked by: Dan Aukuso What causes a derailleur to snap? Some common reasons for it breaking are: Hitting an obstacle (e. Jul 29, 2017 · 3 Bent Hanger T he rear derailleur is attached to the frame with a hanger. How do you know? Usually, the symptom that tips you off that adjustment is needed is hesitation during shifts. 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. There are tools to check for that and bike shops have them. Once bent, you might not even notice that the shifting isn’t as crisp as it was before and just keep riding as usual. 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. Mar 22, 2024 · Derailleur hangers are there to protect your frame from damage, but are prone to bending themselves. Alternatively you can replace the derailleur hanger which is the part that bends. It looks like the derailleur hanger is bent. 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. 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. mvko nlti cvprdxh wpri ikzk mnqo tezegz rbr zpfqgga faq urp piyanax ydhs autsb utkaf