Destroyed Derailleur/Bent Twisted Hanger

Destroyed Derailleur/Bent Twisted Hanger - I Can Fix This!

Рет қаралды 331,357

7 жыл бұрын

I found a free Trek dumpster bike with a broken mangled derailleur. It was ripped in half! And the derailleur hanger was twisted around almost 45 degrees. The bike was trashed, but hey, it was free! I am guessing the derailleur hit something, and the cage was torn from the body. Maybe the cage got caught in the spokes, though no spokes seemed damaged. I am just guessing. Anyway, I managed to straighten the hanger, and replaced the derailleur with a similar model. I also replaced the rusty chain. The bike will come back to life. The bike is a Trek 820.
This is the derailleur hanger alignment tool I used (Park Tool DAG 2.2):
www.amazon.com/exec/obidos/AS...
How To Make A Derailleur Hanger Alignment Gauge Tool:
• How To Make A Deraille...
How To Make DIY Dropout Alignment Gauge Tools:
• How To Make DIY Dropou...
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Пікірлер: 517

@RJTheBikeGuy 5 жыл бұрын

For more bike repair videos hit the subscribe button 🛑 and click the notification bell ► bit.ly/SubRJTheBikeGuy

@bellavia5 5 жыл бұрын

Just watched this again. What a score. "One man gathers what another man spills". -The Grateful Dead

@BulletmanDoom 4 жыл бұрын

Have you seen the price of Park Tolls in the UK? 😲😲😲😲!!!!!!!!

@armandolauder6598 4 жыл бұрын

don't have high tech tools like you but .. i restored alot of BMX's and 10 /18 speed bikes with other parts i find and hope parts fit other parts.. and of course .. then some idiot steels it ..why ???

@petert3535 4 жыл бұрын

@@armandolauder6598 I feel your loss bud... You should definitely check out some more of RJs videos though, he's got a lot of videos on how to help yourself out when you don't have the proper tools on your hand!

@bikeboy6674 6 жыл бұрын

Your videos are like therapy! It's great how you can take rejected and discarded machines, and breath new life into them. Skills!

@eruetifoster5162 7 жыл бұрын

Good on you fixing this bike instead of allowing it to be thrown out. Far to often we're just disposing of items due to some minor damage.

@rakso_ddl8677 7 жыл бұрын

Erueti Foster 'minor' its not minor if you can't afford the tools to fix things like this

@eruetifoster5162 7 жыл бұрын

It's not not so much a case of being unable to afford repairing but is it worth repairing? Due to mass produced goods they're so cheap it's more expensive to repair than buy another. Maybe that's a challenge we can put to RJ The bike Guy? Can he come up with ways to repair bikes without average cyclists having to purchase specialized tools he used in this video.

@rakso_ddl8677 7 жыл бұрын

Yeh, I want to see him use some really cheap tools if any proper tools whatsoever

@RJTheBikeGuy 7 жыл бұрын

I have videos on making many tools too replace more expensive ones. Often cheaper tools can be used. Like in a recent video, I used a DeWalt Compound Miter Saw. I could have used a handheld hacksaw. It just would have been a PITA, taken longer, and given not as nice of results. But it could be done. I am showing you how to do things. If you don't have a tool, think it out. What else can you use?

@kxlucifer 7 жыл бұрын

RJ The Bike Guy my state got alot of people sell them minor damage bike to the scrap yard..me personally i invest money on buying vintahe bikes from ebay and restore them for either pedals and making it a motor assist bike.

@w.m.aslam-author 7 жыл бұрын

We live in a throw away society. Good to see people like yourself value and recycle such bikes.

@lekhapratap1652 4 жыл бұрын

Saving an old discarded boy is always a cool thing. Letting it live. There’s something very cool and satisfying about bringing discarded and old things back to their former glory. I love it!

@navi-charlotte 7 жыл бұрын

ouch... so that is why replaceable hangers were invented... well, I just wish there weren't like 10 thousand types of them.

@buckhorncortez 7 жыл бұрын

The fix isn't "dangerous." It's steel and won't fatigue from straightening it out one time. Steel degrades gracefully. Before it broke, you'd see the place that was straightened work-harden first (a line would form), then it would crystalize, and finally a crack would form. It WILL NOT suddenly break off.

@buckhorncortez 7 жыл бұрын

What "damage" does it receive from the road? The hanger is at least 3/16 or 9mm in thickness. It is a low stress point on the bike as the forces (weight of the derailleur) and tension applied by the chain to that point are very small in comparison to the thickness. The modulus of elasticity of steel in 3x that of aluminum - about 30 x 10^6 ksi. Look up "Young's Modulus of Elasticity for Metals and Alloys," or reference ASME B31.1-1995. Yeah, having owned a machine shop and worked with steel, aluminum, titanium and other metals - I'm sure the repair is just fine.

@buckhorncortez 7 жыл бұрын

No, it's not "just for fun," it's called attempting to protect yourself from product liability law suits. Body-on-frame automobiles are popular with police departments specifically because the maintenance shop can straighten the steel frame - as cop cars get a lot of non-standard usage and frames get bent regularly. The frames are straightened multiple times before the car is declared unfit for service. I will guarantee that the police car frames are put under a whole lot more stress than a bike derailleur hanger.

@RJTheBikeGuy 5 жыл бұрын

@Camiboy 1p There are a ton of different flavors of replaceable hangers. Your best bet is to use google images and start looking for matching hangers. Or google the brand/model of you bike and see if you can find what hanger your bike takes.

@dallasdandigitalproduction393 5 жыл бұрын

@Yard Sale Dale Thanks for this link . Really helps me rn. Cheers

@yosisoyshi 7 жыл бұрын

Thanks for sharing your love of bikes RJ! The quality of your videos improve each time you upload (the editing, the flow and the speaking too) I now work as a bike mechanic and watching your videos with your attention to detail has helped me improve my skills. Great find! I also love bringing old forgotten, broken bikes to life :)

@johnhampson7 7 жыл бұрын

While it's true that the "Park Tools" aren't cheap, the bike itself was. The tools however can be used again and again, and if you can continue to pick up cheap or even free bikes like this one, then the process is extremely cost effective. Nice one RJ keep em comin'.

@bogdanchitu6292 7 жыл бұрын

Well, cheap tools tend to wear/break a lot faster :)

@chester371 7 жыл бұрын

Bogdan Chiţu they can also damage new parts

@nealdew71 6 жыл бұрын

John Hampson No I cannot agree buying Park tools defeats the purpose unless you are a bicycle mechanic.

@markburns4777 3 жыл бұрын

RJ’s repair videos are the best I have seen online. Good camera work, good editing, good topics, and actual repairs being done. He doesn’t use $5000 tools and he doesn’t have volume or lighting issues. He makes it all look so simple and if you do what he tells you then it works.

@TheGeffry 7 жыл бұрын

Give this man a cookie! Before I've found RJ's videos, I took my road bike to the mechanic with every small issue, now there are only a few things I can't do on my own, mainly because of the lack of tools.

@robkunkel8833 Жыл бұрын

Thanks. A clear guide to trying to repair my 8 speed derailer that derailed after a fall with my 3 day old bicycle. 76 years old and my first new bike with a derailer. It went down after a minor accident avoiding a car. Damn … but good to have this video.

@trooperthatsall5250 5 жыл бұрын

Hay RJ - I would like to say thanks for your very instructive videos- I completely repaired my on 1993 - Marin, its like new (purchased from new) it was damaged in a move and was left neglected in a shed for 5 years. I have completely changed the cables, trued wheels, straightened the derailed hanger all from watching your vids and had fun doing it. I now have my bike for commuting again and I am loving it.. smooth shifting - quite, smooth. RJ you are the man thanks ~ Trooper

@BikeItUK 7 жыл бұрын

Great work and another bike saved, big thumbs up! Good advice as always all the best Andy

@MoPoppins 7 жыл бұрын

What a satisfying "rescue." I learn so much from you, RJ. You make bike repairs fun by demystifying it all and making everything an exciting ADVENTURE.! :)

@phieryone 7 жыл бұрын

You are a master of your craft RJ. Keep the videos coming. You helped me restore my own bike, your knowledge is invaluable sir. Thank you.

@tonyjarnigan9714 7 жыл бұрын

Love the change in pace and this type of video - mixture of you finding deals and detailed fix instructions.

@joen3992 7 жыл бұрын

Finally a video I can show friends that proves that if your RD hanger is out of aliment, then your RD will never shift right. Thanks RJ.....Also, the Trek 820 was the last bike they made until 2015 that was made of steel. Cheap, solid and if taken care of right, runs for years and years....

@sitflyer2661 5 жыл бұрын

Thanks for this one RJ, my bike guy has given me a couple wrecks to mess around with, a Nashiki which yielded some good friction shifters, derailer breaks and some bearings and square taper crank, along with other sundry bits, and now a Raleigh about the same vintage with a bent derailer hanger but otherwise serviceable frame. I used an small anvil and ball pein hammer to straitened out the derailer hanger as close as I could by eye, and to close the gap where the axle fits to the frame because that had got widened when when the derailer got into the spokes. I have the derailer from the Nashiki which if I can get everything aligned and functioning there in the back I will continue to restore the old Raleigh street bike ( 12 speed). I learned a lot of what got me to this point from surfing through your videos, you have given much to us shade tree mechanics...thank you for your sharing of knowledge.

@schlooonginator1227 7 жыл бұрын

Great video. I do most of my own work on my bikes but you are on another level as far as repairs go. I wish I had all the tools you have.

@stilianivanov3377 7 жыл бұрын

The thing I love to do is bringing bikes back to life. RJ, you are the man !

@jimgray3346 3 жыл бұрын

-no need for fancy background -no useless closeups of rj talking -useful bike fixing help -common bikes and bike parts, not high end carbon and perfectly lubed-up components RJ's videos are just awesome and realistic

@johnpossum556 7 жыл бұрын

Nice save! I rescued a Ross so old I think it is one of the first mountain bikes ever. Nothing wrong with it at all, just age-rotted rubber. Put some wide cruiser handlebars on it, new seat, cargo carrier and milk crate and it makes for a decent grocery getter. Also high visibility puncture resistant street slicks for added safety while doing those late night grocery runs -- I never skimp on the rubber! (I'm almost wondering if it'd be worth more to some one if left original?) I'm constantly amazed at the stuff inner city folk throw away. Microwaves that work. I even got a digital soldering iron because the tip was bad. Brand new with the box. Studio quality microphone, too.

@jameswilson2815 2 жыл бұрын

When you say I think I can fix it, I KNOW you can fix it! Your skill and knowledge of bicycles inspiring! Gotta go fix my fork now. Keep it going brother. Aloha

@nameless4284 7 жыл бұрын

must say that destroyed derailleur made for one of the most epic thumbnails I have ever seen! so awesome to see you breathing life back into that beautiful bike!

@sabalisabali4952 3 жыл бұрын

This happened to me today. Luckily, I was able to bend it into shape with a few pieces of wood and made it home. I know I can fix it now. Thank you for this video.

@JesusChavez-gt4qt 7 жыл бұрын

I learn something new everyday! The bike world is truly amazing!

@pgbokhari 7 жыл бұрын

Any problems with my bikes, you're the go to guy. Saved me tons of anguish end cash.

@patrickhouk2715 4 жыл бұрын

Glad I found this video! I snapped the rear derailleur off just like this and have been searching for the video on this- thanks!

@chrisbruce1925 4 жыл бұрын

Fantastic bit of work. It's always good to fix things and make good use of them again.

@damntuff62 7 жыл бұрын

top job RJ good to see those alignment tools being put to good use

@greenscobie86 7 жыл бұрын

Best deal on a bike ever. Nice one too. Great tips and instructions, I find your videos really helpful.

@christidmas3995 4 жыл бұрын

So good.Enthusiasm plus.Love it.Old school but just love steel.I once totally destroyed a friends bike by taking my girlfriend on the tube between headstock and seatube.Broke the down tube.No injuries.But my dad a welder sleeved the tubes and brazed them together.Steel is so versatile.Keep up the good work.

@laurentiussoepomo7747 4 жыл бұрын

".....its coming back alive"....Hohoho....very clever and efficient Mr RJ. Good Luck

@avoirdupois1 4 жыл бұрын

Nice tips on how to use these tools! Great to see a dumpster bike restored to operation.

@tskedition 7 жыл бұрын

Your videos are great man keep em coming something to learn every time.

@eiserntorsphantomoftheoper2154 7 жыл бұрын

What a great find!....That will be an awesome bike after you do the magic that few can do..........Thanks RJ

@bellavia5 7 жыл бұрын

Well done RJ !!!

@MrCamohoj 3 жыл бұрын

Brilliant video , just wreak my derailler and hanger when the chain went into spokes . Loosened some spokes and destroyed the mech and hanger. Went to local bike repair shop to be told it would cost £200 to put right. Needless to say i am going to do it myself. Wish me luck but your video will help, cheers.

@michaelmay9728 7 жыл бұрын

Great work RJ, glad you Were able to save it, and it was the best price

@Chrisisbiking 7 жыл бұрын

you are such a bike wizard love what you do inspires me to do something like this keep it up you're amazing!!

@joeg3741 5 жыл бұрын

Nice save! Had to straighten out one or 2 derailleur hangers back in the day. But was long ago. Nice to see the skill atill in use and another bike saved

@camfg8908 5 жыл бұрын

Great job. You should fix all the rusty and broken bikes that are laying around here throughout year. It's sad to see them like that.

@danmidkiff5416 6 жыл бұрын

Great video! Keep them coming!

@cschuh4695 2 жыл бұрын

Nice bike, and definitely worth saving... Excellent video, as are all of your videos... Thanx, RJ...

@ZER0value 7 жыл бұрын

RJ loves a good Trek!

@jsollien127 6 жыл бұрын

8:03 “it’s going to live”. You’re a good person RJ, saving the world one bike at a time.

@robofatcat 7 жыл бұрын

Great work as always

@bruceb7222 7 жыл бұрын

Great job RJ, this is exactly what I love to do as well. Then someone would be the recipient of a nicely refurbished bicycle through my hometown FCSS group! Don't let them go to the landfill! 🚴

@robt6695 4 жыл бұрын

Nice one RJ. You saved this one from landfill. Good work.

@richardfabrizio8998 7 жыл бұрын

Nice job RJ. I like that model Trek too. Should work out fine

@John-P 7 жыл бұрын

Very interesting , look forward to you finishing the job

@TonyVeart 7 жыл бұрын

Good video which I enjoyed. Looking forward to see how this bike turns out.

@dateengineerazurecloud2904 2 жыл бұрын

Cool tools to make the alignments.Wow!

@johnwilmott8063 7 жыл бұрын

Really nice work, be interested in see the bike when it's totally fixed up.

@JacksJamz 7 жыл бұрын

great video. this bike is showing it's age a bit now with its geometry. it's crazy how quickly bike develop

@that70sschwinn 7 жыл бұрын

Another amazing rescue... nice job

@DannyBoy-vg6kp 7 жыл бұрын

Awesome, I hope you do more videos on this bike.

@timk9700 6 жыл бұрын

Outstanding save... Thanks Tim

@TypeVertigo 7 жыл бұрын

Great video RJ. Where I live, steel has the unfortunate stigma of being cheap and not so desirable as a bike frame material, but this and many of your other videos have illustrated just how workable and repairable it is (given the correct tools on hand, of course). The only real downside to me is its susceptibility to rusting - I don't even mind the weight penalty so much. Makes me wish I could restore/modernize that 1981-82 Peugeot P8 I asked you about earlier, since that was steel too...but oh well. Thanks again!

@MrRicardoax01 7 жыл бұрын

nice save RJ... thanks for the post.

@Vlasys 7 жыл бұрын

Good job RJ!

@mrJayGaragebikes 2 жыл бұрын

Amazing workmanship 🤟🔥🥰

@winnguyen443 5 жыл бұрын

Awesome RJ, most people would turn away from that bike. Hope your back and neck are coming along.

@CAN182403 5 жыл бұрын

It would have changed a persons life on the other side of the world, here we dump things even if its a very minor repair, great fix and a great video😊👍

@roberthsu94 7 жыл бұрын

RJ the bike guy is batman He has every tool to fix the bike lol

@nukedathlonman 7 жыл бұрын

Yay, - always good to see a bike saved and put back into into service (well, not just yet)

@irishtruther1013 4 жыл бұрын

great potential and great find nice fixx!

@vladimirjoovanovic1811 7 жыл бұрын

Greetings from Serbia. Great video as always. Continue like that .Please record and publish the entire TREK project.

@_gajewski3626 Жыл бұрын

I have the same problem with badly bent frame integrated derailleur hanger in a cheap Bianchi bicycle I bought. This video gave me hope that it can be repaired.

@dominikk.3706 7 жыл бұрын

More video with this bike! ;)

@michaelfabian2401 7 жыл бұрын

Definitely! Love this restore and rebuild! RJ has inspired me to thumb thru my local paper and CL looking for a project bike to rebuilt and play around with myself

@ShirimeCid 7 жыл бұрын

I rebuilt a pretty decent bike all from scrap parts following RJ's all tips. It was a bliss of a project and I'm really happy of the results. Good luck!

@michaelfabian2401 7 жыл бұрын

Nice! I've always loved riding my bike and just pissing around with them. But now I've gotten this urge to really get my hands dirty and rebuild a fork, change out some cranks and drivetrains and completely restore some lower end CL bike or something I find through the local paper. Just to learn some things about bikes and be able to provide my own service and maintenance, instead of taking it to my LBS. This will be my summer project for 2017 lol

@kodiward7730 7 жыл бұрын

I Wish you were my race mechanic. Nah this is why I watch these videos.

@selrod55 7 жыл бұрын

nice job! sad thing is the kid most likely was told by a shop the bike was beyond repair.

@dermee 5 жыл бұрын

great video! thank you very much. you are like dad to those who could not ask for help from their real dads.

@nealdew71 6 жыл бұрын

RJ my favourite & best cycle mechanic on KZfaq .My friends agree but the concensus is you are Park Tools demo man.

@RJTheBikeGuy 6 жыл бұрын

I use Park Tool tools because they are quality tools. I don't get anything from them at all.

@nealdew71 6 жыл бұрын

RJ The Bike Guy No disrespect intended & I believe you. Just park tools defeat the purpose for my friends & I. A bit like a budget motorist using Strap On tools .You are still the best .

@juniden6168 7 жыл бұрын

nice bike , great find

@mC-sl9ki 7 жыл бұрын

nice find and thats an awesume trek mtn bike

@msg360 2 жыл бұрын

Good job on this i learn a lot

@rubenpaolinelli3807 6 жыл бұрын

Great find!

@TheNickydee007 3 жыл бұрын

Wish I got Trek bikes for free lol. Great video, your the go to guy when I get stuck.

@guix7368 5 жыл бұрын

Great job Rg!

@stowjer 3 жыл бұрын

You made a lovely a job of that, mate 👍

@MarcosBarilatti 7 жыл бұрын

as always...so educational! THANKS

@julianbristow4793 3 жыл бұрын

Your repair videos are really cool.....I found a Mongoose mountain bike in similar condition. The chain was all rusted and in a knot. I took it to the police station and it sat there for a month and no one claimed it so they finally let me have it. I used WD40 on the chain and freed it, trued the bent rims, etc. i was able to repair it without buying any extra parts . It was as good as new, and legal!

@RJTheBikeGuy 3 жыл бұрын

If the chain is that rusty, replace it. They only cost $10.

@Carlos-the-cyclist 7 жыл бұрын

Once again with a good informative video. Also lucky find

@ursoulspure 6 жыл бұрын

Great find. Thanks for sharing the know how.

@Patstar777 7 жыл бұрын

Nice save!!!

@chrismad1344 7 жыл бұрын

Damn u have all the tools I like u videos I learned a lot thanks

@MarinStipkovic 7 жыл бұрын

I am bit disappointed. I expected you to fix the broken derailleur, not replace it... But this is the first video with something I do not like so nothing to be worried about. :P Keep posting, I love watching your videos. And thanks for all the tips.

@crumplezone1 7 жыл бұрын

You are the "Bike Whisperer " Dude ! another one saved from dumpster hell

@johnreese3762 Жыл бұрын

Must be nice to have the "Good" tools. Great video, thanks!!

@tommybdutton 4 жыл бұрын

RJ the Savior of bicycles

@OWK000 3 ай бұрын

I just scored a freebie late 90's, early oughts, Marin East Peak fsr full suspension bike with a bent derailluer hanger and a REALLY rusty chain. (If the chain is really rusted, the quickest way to remove is two vise grip pliers on the chain near each other and twist opposite directions). The derailluer wasn't as destroyed, but there was more rust. The Sunlite cassette was chrome coated and the rust cleaned off it nicely. There are rusty bolts all over. Unfortunately this is an aluminum bike shortly before removeable derailluer hangers, but it looks like they folded some steel into the aluminum hanger and were thinking about making it removable and I just straightened it with vise grips . . . The derailluer looks still useable. I hope. It's a nice bike. I am really stoked. Nothing like a bike resuce. May be going ebike eventually, but the wheels are in really good condition and I think I will just ride it as is for a while.

@mikespringer7894 7 жыл бұрын

sweet find

@drgenerico83 7 жыл бұрын

Very cool! I hope there will be a follow-up video on this bike.

@roythearcher 4 жыл бұрын

Not a bad job! Steel can also suffer from "metal fatigue" if its bent too many times but not as bad as aliminium. It's a good idea if you can, to heat the hanger up to red heat with a torch and let it cool down naturally to Stress relieve it after but this should only be done on welded frames, (not brazed!) and if you're planning to re-paint after. A good save of a nice bike!