Replacing Broken Derailleur Hanger
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- Опубликовано: 30 сен 2024
- I show the process of replacing a broken derailleur hanger, including how I identified the replacement part. I bought this Specialized Rockhopper Comp a few years ago. I got a good price on it, but it was in rough shape. It had a broken derailleur hanger. The chain was also twisted a bit. Not sure how it happened. But it looked like something catastrophic happened.
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Please can I pick your brain. I have a carbon hybrid running 48/32 with 11-32 on the rear. Would a 1x 46 with a 46-11 work or would it look stupid? Is the ratio on a 46ring to 46 rear the same as a 42ring 42 rear?
@@Leo-gt1bx yes to the last question
Fantastic job as always RJ. We get so many cool tips and incredible instructions here. May God bless you!
Derailleur hangers started to need replacement with the introduction of aluminum and carbon frames. The steel ones were more malleable and less likely to break and could often be straightened slightly several times. Cheap bikes often came with steel separate hangers with the derailleur anyway. Too many proprietary standards out there!
Happy to hear "Hey viewers!" in my feed again. I always learn something from your videos. Thanks RJ
Derailluer hangers are just something the bike industry made up for mountain bikes to make consumers buy new bikes. It's pretty dumb there isnt a standard
I'm surprised there isn't a universal part.
I've Actually used that same Rockhopper hangar to replace/fix a broken hangar on a non replaceable drop out (Gary Fisher hoo koo e koo) You have to carefully grind/dremmel the dropout into shape including removing the raised bit on the inside, widening the slot and drill for the holes (I think I removed a bit of the external lip of the hangar too) but it worked a treat, I see no reason you couldn't do the same with a lot of older steel frames. I see gorgeous lugged "mid range" (for the time) road frames with snapped off hangars all the time for chump change, too good to throw away but not worth the expense to have the dropout replaced. Seems like a fix that might be up your street RJ, if you can manufacture one of those quill seat-posts you could do that no problem.
Nice to see you back RJ. I watch your videos even when I don't need to.
Great video...I have be working on bicycls for about 30 years. Thanks for your advice.
Would you use a derailleur hanger alignment tool before putting the derailleur back on?
No. That is for non replaceable hangers. And if the dropout is straight, the hanger should be.
Good to know, thanks!
I would, but I'm a professional mechanic and RJ is not. A hanger alignment tool can (and should) be used on any hanger that's known or suspected to be bent. That includes a new hanger, because the hanger itself, and/or the frame, may not be perfectly straight. A 7 or 8 speed drivetrain can tolerate a lot more misalignment than higher numbers of speeds, but it's still best practice to use the hanger alignment tool first.
And on a hanger like this, if you tried to adjust it, you will likely snap it it right off again. Great job! If the drop outs are straight, the hanger should be straight. Better to use dropout alignment tools.
@@RJTheBikeGuy Not if you know how to use the tool properly.
Glad to see you back! I've returned to the Philippines. Up side is that skilled labor is very cheap. Custom paint and machining is often less than you'd pay for materials in the states. Down side is that everything but the most basic generic parts are special order from outside the country and may take ages to arrive. (China is only a week out, a package from Great Britain can take months.)
Good to see new content… your channel has been my go to for info and tutorials for a long time. Hope you’re doing well. Take care!
I never had a problem with the frame permanent hanger or damaging the derailleur. This is just another example of a bad idea gaining traction industry wide like bottom stay mounted U-brakes in the late eighties and nineties.I had people give me bike because the breakable, not replaceable little hanger broke. Not being bike people they were unable to locate one. Yeah, I don't ride as gonzo as you see people riding these days but with those guys they end up buying new frames because their multi-grand carbon fiber bike snapped. Stick with steel and brazed on hangers, you will enjoy your bike much more often, much longer.
This exact problem happened to me on my last ride! I changed gears and there was a lot of noise. Suddenly I wasn't able to pedal. I thought my chain had come off, and then I realized the whole rear derailleur was hanging off! The hanger had broken exactly as in your video. I mostly walked and occasionally rolled (risky and awkward) to a bike shop. Surprisingly, they gave the option to just replace the bracket; but the derailleur was a basic one and I upgraded to a better one for just over three times the cost of the bracket alone.
Another valuable RJ the Bike Guy tip. I couldn’t have rebuilt any of my bikes without his videos.
It happened to me also. So, my geardrop have broken, during a city ride ( not off road) on a very good bicycle lane (infrastructure ) in the city of Aarhus, in Denmark. Due to an intense wind, a plastic bag flying around have twisted on the derailleur. So, when the chain putted presure of the derailleur, I think was the moment when the hanger have broken 🤔
I suggest truing your hanger (Part Tool DAG, Abbey HAG etc.) before reattaching the derailleur, as it's very possible that whatever impact caused the derailleur to snap off possibly caused the rear tip of the chainstay to also get bent and out of alignment.
Not the hanger. Aligning the dropouts. The hanger is aligned with the dropout. If the dropout is straight, the hanger will be straight.
@@RJTheBikeGuy Agree,. But, in absence of frame alignment tools (or skills), I believe it would be necessary to properly align the hanger,
@@mrvelro No chance Bobby, that hanger will break in half if you try and bend it!
@@Bikeops2021 It isn't by much so it doesn't take a lot of force, but just about any bike has a misaligned hanger. Even new bikes fresh out of the box.
@@cccpkingu Totally agree mate..
Thank you so much, this was the exact problem with my bike, wouldn't have done it without you.
Great job
This happened to me it’s either when you change gears because that’s what happened to me or it was trying to shift a gear and it broke
this happened to me lmao, me and my mates were riding down a hill, and my chain had got caught up and I didn't realise cause I couldn't hear it, when I rid down the hill it started snapping off so I had to wait until I was at the bottom and I found out it had fully snapped off, 2 hour walk home
@@bluuuzs That sucks
Next time you could use Google Lens to search images based on your image.
Taking a photo of the existing hanger and then reverse google image search can help ID the part.
I am going to an insane bike camp this year and they say that this is a common problem and issue.
i had 8 bikes and i broke the hanger on all of them so yes it is true ;))))))))))))))))))))))))))))))))
How do you know what angle to mount the derailer on the hanger at?
love seeing the video's again i missed them
My rear derailleur is the same like in the video...but it starting to getting loose... chain flops everywhere...no tension...should I cut the chain shorter or is there any other trick?
new mech. springs fucked. or add some tension to b limit. Screw in the B limit screw (screw touching hanger)
Welcome back!🤓
Perfect 👍
Hot damn that is a spike in video quality. Iphone pro?
I have improved my cameras over the years. Been using this one for a while. I started rendering my vids in a higher res. Shot in 1080p, but rendering in 4k. I think it helps.
Very hood
Thanks again
awesome man
I wonder if the chain doesn't have a master link??
The chain was garbage, so it didn't matter.
Just use a photo to search. It's not like we live in the year 2015 or so.
Great bike mechanic?... Search your feelings, you know it to be true
If you are going to be a mechanic , then do the job right , instead of using bolt cutter , use a chain breaker tool to break the chain, do not use pliers to squeeze to put the new hanger onto the frame. You wasted 3 minutes of your time searching for it , which you should have done before you did the video. And last thing use a blue locklite on the bolts to keep them from working back out. if you can not do this , then don't do videos and give people bad advice.
Nope bolt cutters are the way, when the chain is done. I've stripped hundreds of bikes for rebuild. I'm not going to waste time or add wear to my chain breaker.
Imagine telling RJ who has many years of RUclips repair videos, what to do when you likely don't know.
@@stitchilalu I disagree, he should use the chain breaker, if going to do videos, then he should do it right for the people who is viewing the video.
This RJ chap is all about 'how to', and will happily show you the 'boring bits'. I'd avoid giving his other videos a look, you might be more offended thann you are now.
In fairness, RJ's work is much better than your grammar!
@@Bikeops2021 You leave my Gramma out of this.
I'm sorry, but it's absurd that you cut the chain without checking if it was in no condition for use. From what I saw, the chain was perfect and it was enough to distort it. at worst, you should have opened the chain and then reinstalled it with a new link. another absurdity is to tighten the new hook with pliers. unbelievable. finally, you spent an enormous amount of time explaining how to search for the dropout on google and did not explain that after placing the derailleur, it has to be adjusted and carefully checked whether or not it is warped, in order to avoid damage to the wheel and even a horrible accident due to a possible lock of the rear wheel. I think the video needs to be redone. , in order to maintain the quality and excellence of your posts.
I disagree. I see nothing wrong with his methods. You are doubting a man who likely has decades of bicycle mechanic experience.
100% disagree with this comment.
What??? You can see that chain is knackered and half seized it doesn't hang in a smooth curve under its own weight and it's rusted, its trash, besides steel is 100% recyclable the nasty chemicals you would need to try (and likely fail) to bring it back to life, not so much. He didn't tighten anything with pliers he just squeezed the hangar into place, those hangars are drop forged and are made slightly undersized by design for a tight fit, they need a little encouragement to seat, totally normal, if you don't do that and rely on the tiny bolts to pull it into place you risk stripping the threads. Even though its good practice to check derailleur hangar alignment, the idea that a very slightly misaligned hangar is going to cause a catastrophic failure is laughable, most new bikes come with slightly "off" hangars.
9 speed chains are like 20 bucks what are you on about? I’ll replace a chain if it looks at me funny they’re consumable!
@@connormonahan6979 🤣🤣🤣🤣
Broke mine today. Yep shifed ton1 and it got caught in the spokes. Derailleur was a 9 speed on a 8 speed cassette
Someone didn't adjust the screws to stop it from going an extra gear