Rear Derailleur - Advanced Troubleshooting

[@becyk_du_quebec]

Totally did not expect him to show us an example of a bent derailleur by smashing a rock on it 😂

[@leonarddomingo2091]

But he did it for us, for the video, afterall, he aligned it after that

[@wtf1570]

Have to hit the like for that

[@awesomexistence]

Calvin neglected to give us the weight of the Park Tool special rock, the speed of momentum, and the point of impact (leverage point) on the rear derailleur to effectively bend the hanger. These values would be variable as to the brands and types of derailleur, and hangers. Perhaps he should create a cross reference chart for the force/angular deflection! I realize no one is perfect, but come on Calvin. 😂

[@WillG_MTB]

spoiler

[@dylansimoes4977]

I must have missed something, I thought he fixed it with the rock...

[@mustism]

Where can i buy that special rock tool

[@DrDrew1979]

As a limited time offer, DRT-1, or Derailiuer Rock Tool-1, is available at any construction site for free! Hurry to grab yours and enjoy the legendary Park Tool quality!

[@cameronblackbourn5081]

I'm lucky, I just found one lying on the side of the track today.

[@DannyGriffithsOnTV]

Be careful to only use a Part Tool rock, using a cheap, unbranded copy might cause damage to your bike.

[@armyguy686]

be wary of Chinese knockoffs, as sandstone and shale are unacceptable.

[@Relax-sb9pi]

🤣🤣I'm dead

[@sunshinealley]

these videos are so high in quality and education. a big thanks to everyone involved in making these videos.

[@shpetimzeqiri9765]

this channel breaks the taboo... i did always fear for breaking the part of the derailleur, now i have confidence and know it can be fixed.. always remember this : one day, you will have to break the taboo, it will be freedom x'D

[@lukeoxley7548]

This video has been great for helping me troubleshoot drivetrain noise on my ebike. I also like how the instructions are clear, precise and easy to follow, with examples of when something doesn't work

[@actual_nonsense]

These are, hands down, the most helpful videos for bicycle maintenance. Thanks Calvin and Park Tools!

[@briand40]

I've watched a few videos on rear derailleur adjustment and found them useless until this mechanics video. Absolutely priceless with detailed explanation. Completed the adjustment first time. Visual guidelands are exceptional.

[@Combat556]

This video was exactly what I needed to confirm that my Ultegra rear derailleur needs to be replaced. Thank you Calvin and Park Tool.

[@scaredshady]

2:00 Ugh that hurt me inside a little

[@felipefi]

I appreciate the honesty on what must be replaced and what can be fixed

[@MsCage9]

These videos are great. I really appreciate the time everyone puts into these. The highlighting of the parts, the visual guidelines added in after effects are sooooo helpful. I appreciate also how you explain not only what a part is for but how it works and how it interacts with other components really helps me understand why were' fixing what we're fixing. Thank you for taking all the time to make these.

[@JoeMama-jo4zx]

WOW, Dude you are the man….!! I have been dealing with a shifting problem for almost all of the last two years. I have viewed dozens of videos on troubleshooting derailleur in that time. Early this morning in another attempt to resolve this problem I caught your video and within minutes I was on my way to the solution. My ride this morning was the best trouble free ride I have experienced in years. Thank you bunches….!!!!!!

[@alfred576]

Calvin Jones is great

[@chrisby777]

Thank you so much for your time in producing videos that help me no end. I’ve not ridden a bike for many years because of a fused spine but recently I purchased a recumbent trike and I’m back on the road again even at my age (70). I appreciate your expertise and simplistic advice in correcting derailleur problems. The diagrams make it so easy to follow. My only issue is that my pedals are a long way from the rear wheel lol.

[@stanleytempro5401]

Many thanks to Park tool for sponsoring these videos and special thanks to Calvin Jones for taking the time to make them and giving such simple clear instructions......GREAT job Guys!

[@ivan_bland]

wow, love to see the detail and production quality of these videos. it really makes learning MTB maintenance so easy!

[@nonamegiven6271]

Bent hanger adjustment was excellent advice! Not spending on that tool for now. Having the base knowledge put me in decent shape! Thanks again!!

[@davisrides]

Love it thanks, I've watched your "Rear DR adjustment" video many, many times and found it to be extremely helpful. After following the steps in that one, and then lubing the cable my son yet again has crisp, accurate shifting- Thanks!

[@disaymec297]

almost all of the video helped me to fix the minute trouble of my MTB thanks a lot.

[@zaidhamid7269]

You are a life saver sir There's very little experienced people in this field so i don't trust them. Instead i watch your videos and do it my self 👏

[@MrSmasher27]

awesome! not one video could help me out in solving my problems, I watched yours and boom! I'm Rockin'and rollin

[@aguywhoreallywantsyoutokno8443]

Thanks! I find your videos very comprehensive and still intelligible and simple. The best explanation that I have found so far.

[@lreal4762]

I love these videos! I'm a newbie to the bike world and I had no idea how much work goes into keeping a bicycle maintained. The guys at Park Tool explain in simply and quickly :-)

[@H8Bully]

Hi Cal, I always stick to your video because guide through the troubleshooting very clear and easy to understand. Thank you.

[@russlee5500]

Brilliant video, informative and straight to the point, thanks.

[@montoyatony778]

I love this guy he explains it well

[@halicusnguyen8864]

Calvin: "This piece can be bent by crashing and bashing." Me: Ok now they're going to bring in a damaged- Calvin: *smashes derailleur hanger with a freaking rock* Me: :0

[@masterbert7098]

same hahaha

[@jeremyemilio9378]

*shocked Pikachu face*

[@halicusnguyen8864]

@@jeremyemilio9378 shookith

[@TheKlazar92]

perfect video, explaining a lot about bad symptoms

[@idhoppers]

Instant like after seeing rear derailleur got smashed with a rock😁 love park tool videos, they are right on point very informative, somehow feel very comfy and are really good to rewind something about bike repairs in memory. Big thanks to Calvin Jones for such an excellent narration! He is much better in narrating videos than 99.9% of professional narrators. Watched your videos years ago and decided to subscribe now.

[@Sicklehead88]

so in the "how to wash your bike" video they wash an almost perfectly clean bike, but in this one, they smash a rock to the derailleur to demonstrate the hanger bending :D great video nonetheless!

[@yuxuansun8271]

Maybe should also mention how the b tension screw affect chain tension and shifting sensitivity.

[@wittmf]

As usual, an excellent instructional video!!! Thanks for providing this great service!

[@declanjones8707]

Thankyou Calvin and parktool! I needed to know a quick way to check #6.

[@steveberube966]

Calvin crushes it again! Thanks for these fantastic videos

[@HarryRemer]

Literally crushes the derailleur hanger... :-D

[@delucerrr]

OMG, I got frightened when you smashed that rock into the bike 😂

[@monkeyhaters9258]

Me Too! Cuzz that looks like the bike they're supposed to be working on for me!!!👈 Just kidding???🙄

[@chadkline4268]

You guys are great 👍 excellent videos and descriptions with links.

[@tombolo22]

Excellent video, though I would have added a comment about how improper B-screw adjustment and inadequate chain wrap can adversely affect shifting. I see it all the time!

[@karstenknebel3244]

Dear Calvin, I was recently working on the rear derailleur of a MTB from 1991! After having set the H-limit screw and making the index adjustment I was observing that the shifting onto bigger cogs (smaller gear) was working fine. However when shifting back onto smaller cogs again, there was either a strong delay of shifting or the chain was remaining on the cog it was already on. In this case, it was sometimes making strong noises, sometimes it did not make strong noises and I had to shift a 2nd time towards smaller cogs before the chain would move a cog down. I lubricated the shifting cable and housing. I also made sure that I had no offset of one gear when doing the index adjustment. I also checked if the derailleur hanger was bent but it was not. I noticed that the derailleur of this bike was easily moveable (swinging) back and forward in riding direction and that the adjustment of the B screw seams to have no effect. My guess is a worn out derailleur spring. I checked the derailleur of a newer bike and it was stiff in one position and could not be moved easily back and forward in riding direction. What do you suggest?

[@parktool]

It is possible the spring is wore out, but not probable. It is also possible the pins in the linkage have developed a lot of play and this will cause it not to shift consistently. Try this. Shift up to the large sprockets and stop the wheel. Do not pedal and shift the lever back to the first position to get lots of slack. Now pedal to drop down to the smallest sprocket. Pedal and use your hand to push the lower rear pivot of the derailleur in just to shift to the next sprocket and release. You are testing the derailleur and the spring. If it goes up and down by push just fine, the cable should be able to simulate that.

[@DrummerElliott]

Just follow along with the video exactly how it's done and you'll do great! That's what I did and now my shifting is flawless. Saved me some money too by not taking my bike to my LBS. 👍

[@robnijhof1978]

Thanks for this! I learned something new to check my shifting issues on my mountainbike :)

[@davidwatkins736]

Even though this is a 5yr old video, its still helpful today...ty

[@mitchhesselink3706]

Dude awesome video thank you so much! I was worried about fixing the chain on my brand new bike, frustrated that it was slipping and this totally fixed it! Thank you!

[@bierpreis4446]

Useful information in a short Video. This is great.

[@nblott]

These videos are really well designed and presented. Great job!

[@sprayfoam1552]

Amazing educational video. This helped me to fix my derailleur issues I was having. Thank you

[@oakinger]

thanks for the helpful tips! They allowed even a newbie like myself to fix gear shifting

[@massimouguzzoni8631]

Many many thanks. Best regards from Italy. ❤️❤️❤️💕🇮🇹🌈🇺🇸💕❤️❤️❤️

[@cansurmeli]

This video was extremely helpful! Many thanks.

[@StuffOffYouStuff]

This iwas really helpful. Didn't know about the chain types causing problems too!

[@cupunkinlove]

thankyou for the perfect explanation

[@brycehuff]

Calvin Jones is my hero!

[@esgknight2221]

thank you sir because I was able to make my gear shifting proper by your method thnk you soooooo much

[@billmarsh1971]

That hanger damage gets me every. single. time.

[@theundead1600]

Dam bent hanger and incompatible shifter with derailure. Great video. I got working for now lol kinda

[@meedowload795]

ADD: CHECK if the cable is properly attached to the derailleur

[@shaunsprogress]

That's my Rockhopper! Mine needs a lot of work and perhaps a new chain, F&R derailleur, cables etc!

[@Maveric72]

Big thanks from India

[@sean0611]

Calvins been working hard today!

[@veetrovic3430]

The best how to graphics. I'm still puzzled by a rear derailer that hesitates moving to the last 2 outside gears on a seven speed Shimano. I did not see that topic addressed. The Hi-side stop is not in the way. The spring simply does not have the push it appears to get it to the outside. All components have been lubed and moved. It was working fine just last week.

[@fergusdonaghy3124]

Calvin should get an Oscar

[@jaysoncordrey4272]

Thank you for the information, I was able to fix my bike.

[@masaharumorimoto4761]

Thank you! I think my derailleur is just worn out, going to get a new one for posterity :)

[@ThomasSlaney]

Would be good to mention (esp. for beginner home mechanics) to make sure the axle and rear cassette are on tight. I've encountered that once on my bike and on a friend's bike, resulting in ghost shifting and weird shifting performance.

[@keithscott9774]

Great video, thanks very much.

[@setzenmaxette5688]

excellent upload! thank you

[@cleandawg]

Very informative. Thank you. You helped me a lot.

[@allanbrogdon3078]

We used to carry spare rear derailleur hangers in case of trouble in the woods. My blur has a hanger that bolts to the seatstay and chainstay. Its beefy and with the removal of two bolts you can remove the chain without breaking it except for the derailleurs. My old steel road bike is about to get the crescent wrench on the rear derailleur hanger ......

[@DmitriySokhach]

Thank you for the videos - they are great and the only which helped me feel my derailleurs are 100% setup :-) Still have questions about "pulleys", cause mine got rusty: 1) Could you make video about them? 2) What is the difference between 8spd-11spd pulleys, and can we put 9-10-11 spd pulleys to 8spd derailleur? 3) Can we put 13T instead of 11T? 4) Why some of them have holes? 5) Why some of them have direction? 6) Is it worth buying somewhat more expensive ones for low-end casual derailleur?

[@kailash680]

you make really outstanding videos! Perfect videos.

[@SHIVRAJ-qi3fs]

thank u very much it was very helpful .plz upload more videos like this

[@Alysavos-rd4tp]

1:58: damn thats a good looking deraiileur 2:00: NAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOOOOOOOOOOOOOOOOO

[@tarlochansinghmarwaha3631]

Very useful to do trouble shooting

[@springstern]

Thanks for the video. I watched a bunch of other videos on derailleur troubleshooting but they are not as good as this one.

[@ivanvetcher]

Wow bent hanger, who would have though! Great Trouble Shooting!

[@fermium9231]

just awesome work sir you helped me a lot

[@cooker8310]

thanks for sharing your video's

[@benragg4754]

One more potential issue - when I assembled the cassette some cogs were back to front and this caused a lot of noise and misalignment. Discovered this after many hours troubleshooting!

[@bclarg3248]

First, I agree that these Park Tools videos are high quality and very informative. Now, my problem with my Shimano Tourney rear derailleur. I can get it to shift either smoothly up or down but not both. I can not seem to find that sweet spot on the cable adjuster for indexing. All original components. Thx

[@parktool]

That is a fairly common symptom of either a misaligned derailleur hanger or resistance in the housing/shift cable.

[@bclarg3248]

@@parktool I did recently have an "unplanned landing" but I thought I had straightened out the derailleur hanger. Thank-you for taking the time to answer my question. Unrelated: do you have a video on what to wear in warm and cold weather?

[@emmanuelbenehiwuogwu4074]

Thanks for getting back to me Park Tools, I really appreciate it. I will start by adjusting the derailleur first, then I will let you know how it goes when I'm done with it. Once again, thanks for your help.

[@HK-dd2bo]

This guys a legend!

[@Dinaltium]

This is why KZbin exist.

[@Dopeassbikevids]

S.O.S. I got a new bike,shimano tourney,won't shift for crap,tried every thing. Hanger looks straight, but derailed looks bent outward,not inward like you would think,I will try any thing at this point, I know tourney sucks.thx Kenneth

[@danfuerthgillis4483]

00:28 you have a bent derailleur cage ( bottom pulley section). This will be noticeable on the Cogs that are not perfectly in line with the Ring up front as you will get grinding on some gears and the barrel adjuster will be useless since the bottom pulley will always be pulling away from the adjustment.

[@jantkim]

"Chains don't last forever" (3:37) -- that's not just true, it easily makes it into my shortlist for "understatement of the decade". In fact, today's chains have design elements that serve no purpose other than causing chains to wear more quickly. Two such features are (1) rivets that are not straight (see 3:43), if they are thinner in the middle, the sideplates of the narrow links will be pulled towards the centre as rollers wear out, resulting in unnecessary elongation of the chain, and (2) sideplates that are not straight (see 3:27), as the use of the chain which is entirely normal and which it should be designed to withstand will straighten out any non-straight sideplates, thereby nullifying any clever effects the sideplate design may be intended for, and replacing that with the unintended (by the rider, but perhaps not by the manufacturer?) effect of chain elongation. I know this is a bit tangential to the main topic of this video, but thanks for illustrating these problematic design features anyway.

[@themehrdadsun]

♥ Thanks for All Your Great Videos. ♥

[@JustinCrediblename]

thanks. time for a new derailleur.

[@santo9269]

Myn makes Exive noise on one sprocket and I have turned the barrle as much as it can go clockwise

[@charlesbandini6650]

Excellent

[@AbderrahmenBesbes]

welp, after watching this, i can say i need a new derailer -_-*sight*

[@sonicstep]

02:07, My issue with a recently purchased second hand Colnago from an eBay bike trader.

[@richardggeorge]

bugger. i have a sloppy pivot! Thanks guys!

[@faethon21]

0:15 "The most common fixes for shifting problems are the basics": In my case it was how I was passing the cable from the cable (pinch) bolt! Before checking everything else, find the manual of your derailleur and understand every "minor" detail.

[@mikeymeboi]

Good day! My rear derailleur is hitting my spokes on the lowest gear. I have a sram sx group set. All the gear works fine after i followed your instruction in adjusting rear derailleur video but I’m having a problem on the lowest gear.

[@tsarouxaz]

noooo, not with the rock!!

[@casperl6812]

Does the stone follow with the alignment tool?

[@Heroic_Brine]

just had a big issue with my rear derailleur where I lost most of my gears depending on my front cogs position, so I looked at all your vis concerning chains and derailleurs and found nothing that helped so I went to my local bike shop and it turned out it was my pully wheel that where too old just posting this here in case anyone is in the same position.

[@holzwurm_hd7029]

My bike keeps readjusting itself. It runs perfectly fine until either the outside temperature changes considerably or sometimes out of nowhere. Then other times after the rain it runs perfectly fine just to be off again later. I keep re-adjusting it (the proper way) but somehow it always manages to be off again and again until none of my gears are running smoothly. The chain also starts skipping when I put even the tiniest amount of torque / stress on the gear system. so far i was able to adjust every single bike i owned with no problem. I checked multiple times before buying if my shifter was compatible with the gear set i bought and the derailleur i chose. The only thing im suspecting is maybe the cable housing being made of a cheap plastic that changes its rigidity at different temperatures.

[@parktool]

It could be cables or housing. Or possibly housing being too short.

[@user-qq5uu2rz2h]

Are you sure you Calvin Jones' finger pointed at an example of a sloppy pivot? And parallelogram??

[@RickBehun]

Thanks!

[@parktool]

Hey! You're welcome!

[@levibradley9170]

good stuff