How to True a Bicycle Disc Brake Rotor

[@Solarsystem50]

This video is so good that makes me want to buy a disk truing stand, even though I only have rim brakes.

[@jadenr.11]

Lol

[@bobstokoe1332]

😀😃😄

[@lazurm]

Juan Araque: I agree. I got it so bad that I wanted to bend my rotor just to fix it.

[@Juos10kustu]

agreed !

[@damonh82]

😂

[@mikeyskitchenfoodporn1171]

Calvin is the man! Parktools have a fantastic line of equipment, but for me what really makes this company shine are its technicians and their ability to teach someone like myself who's willing to learn all I can. Thanks guys, you set your company apart from the rest!

[@arvismac]

No one comes closer to calvin and park tools in term of viewer-friendly, easy to understand video tutorials. Thumbs up!

[@tonymet]

There's something almost meditative about Calvin's tutorials. Another top video bud thanks again.

[@mattbruneau8215]

I accident removed the inboard pad adjuster set screw and it came out along with a spring and bearing. This is on a Tektro Airies disk brake system. How do I get this reinstalled? I don’t see a place for the spring and bearing. I also heard that they may not be needed. I adjust se set screw to the rotor, backing off about 1/4 turn. No rubbing and brakes were good. I rode my bike for 106 miles with no issues. But noticed, the pad adjuster set screw was missing, meaning it came loose and fell out.

[@alexguiver815]

Been building a 2005 Specialized Stumpjumper with reconditioned forks and shock, every pivot bearing replaced, brand new drivetrain, headset, wheelset and brakes. Today I found the rotors I installed on the wheels 3 weeks ago were out of true new out of the box which tested my Anglo-Saxon vocabulary to its absolute limit. Watched this vid, followed the instructions and problem solved in under an hour, thanks!!!

[@lewismaynard4]

What this guy doesn't know about bikes. Isn't worth knowing! My go to when looking for any repair. Very informative and simply explained.

[@larryeaston2152]

This is a great video. I used the dial indicator method and was able to get my warped rotor to within +/- 0.003". Love your videos. Thanks!

[@polydeuces8747]

I hope you get more and more subscribers. Your channel REALLY is very helpful. Simple yet very effective tutorials. Thank you.

[@HenrichHostak]

Calvin is the best. Thank you for great tutorials.

[@etp3746]

Henrich Hostak 

[@brucexu5972]

setting the bar this high for videos, also covering any possible situation, Park Tool simply the best👑👑

[@picuszesranej5891]

You guys are absolutely AMAZING, THE BEST. I LOVE YOU. Im kinda newbie and dumb about bikes and such. Especially whole brake system was kinda hard to understand for me, but i wanted to fix myself. I was reading some articles etc, few videos and it didnt help me at all.But every each one of your videos is so well made, nicely and easy explained.. Only thank to your videos, i got it all now. I fixed everything i needed. Simple, easy and compared to some services very cheap. Thanks so much. Amazing job, good luck fellas.

[@mikeboston421]

Calvin Jones, you are the king of bike repairs, thanks!

[@klienmrng7019]

excellent video as usual. didn't have the tools he mentioned. just used long nose pliers and a flashlight

[@rodneyjohnson4794]

whatever fits your budget. i do the occasional work-around, too.

[@baiatulcomentator7966]

has a mustache , i trust him

[@MATAS711]

i bet if he gave you candy, you'd jump into the van

[@adeh503]

Some of the best videos on KZbin by a mile very professional

[@jimio5832]

I ever tried putting the rotor on a flat working table , and looked from the side , after spotting the bended area ,I marked and used mallet knocking several times and it worked 🤫

[@Mr.Leeroy]

requires disassembly, but sure.. best to use glass as is most flat while has least roughness, which helps as well

[@canadalife3983]

i use an adjustable wrench to bend rotors. it works like a charm. plus there are thicker rotors out there that dont work with this rotor bending tool

[@justLedeben]

Very helpful tutorials for a beginner's like me.

[@brucexu5972]

@Ian Brown why?

[@brucexu5972]

@Ian Brown damn, thanks. I'll be more careful with leaning my disc-brake bike. cheers

[@cata4ardeal]

Definetely follow Calvins advice...

[@MustardDonkey]

A botch for truing on a bike at 2:50 is to use an adjustable wrench! just make sure the jaws are clean of oils.

[@Mr.Leeroy]

It works most of the times, but it sure is not a pleasant process since you are constantly limited by touching spokes because jaws are so wide. Dedicated tool is like $3-4

[@GNX157]

It seems like the ideal thing to have would be a way to have a reference plane of the rotor down by the hub to better determine if a deviation needs to come in or out at the braking surface.

[@tonycorner9779]

Wow i saw all videos of your park tool its fully awsome it is very useful for me thank u so much

[@canguy10]

oh man Park Tool.. another Dynamite video... well explained and great to watch.... thanks

[@mavirek]

How do I distinguish whether it is the wheel or disc that needs truing? I put together a new Walmart Hyper Ebike with 700c wheels and mechanical brakes. You can hear the disc rub, but you can also see the wheel wobble. At first KZbin convinced me I have to true by going spoke to spoke, but I hadn't even thought of the disc being the culprit until I saw your video.

[@dej121]

Fantastic tutorials! Wish the search algorithm displayed Park Tool videos before SickBike garbage.

[@Uojomo]

Really very helpful Park Tools 👍🏽

[@kellenstuart4698]

That was super helpful. I've spent hours making a rotor seemingly worse. I'm going to try to use the trick of sharpie numbering and I have the park truing stand and the rotor truing tool

[@happyhusband312]

with those tools, i spent even more hours to make it worse.. i hate rotors.

[@michaelrobinson9643]

Using a runout gauge seems very precise!

[@3Max]

~10:30 "If the rotor doesnt improve in a few minutes ... " Calvin over-estimates my mechanical speed :P Thanks for the great video as always!

[@passerby-z]

This guy clearly know his stuff. I hope I can send my bike for him to repair

[@dwampss]

The point is to do it yourself using the tools you buy from them

[@clearcreek69]

Your bike will be returned with a quality control sheet signed by Calvin

[@rocnikrocnik-zy9tz]

Perfektně, profesionálně zpracovaná videa! Díky!

[@ahoohoochen]

very well demonstration，multi angles is awsome

[@13yearsaprepperr.jtilbury.51]

that's like me trueing my 4 jaw chuck on my lathe , a little at a time , Great vid , Rob NSW Australia

[@michaelpritchard1249]

Calvin, is the swamy of bike repairs...always good videos. 👍

[@joreemmcmillan7145]

A small or medium size adjustable wrench is a good alternative for the Park Tool DT-2C Rotor Truing Fork.

[@LvcianoN]

Wow that dial indicator is awesome! How do you know when to replace a worn out rotor? I don't mean bent, I mean like it gets used up. (If that's the case at all)

[@parktool]

Each manufacturer has their own wear specifications. However, if you can see that the rotor thickness at the braking surface is different from the rotor arm thickness, it likely needs replacement. - Calvin

[@LvcianoN]

Park Tool Awesome! Thanks Calvin

[@PeterEllmanMD]

These videos are incredible. Thank you so much ... I’m buying all the stuff !

[@rewind9536]

I tried all methods on my Shimano saint brakes with Hope Floating rotor and red Gaffer pads. First I tried to straighten the rotor by looking straight down at it. This worked rather well actually. I had just done service to the fork so the caliper was not in place. Once I was satisfied with how straight it looked, I braked with the lever and fastened the caliper in that position. This helped a lot, but.I still had some minor rubbing here and there. I couldn't be certain of which direction, even when I looked inside the caliper, so I just chanced it and straightened it in any direction. If the rubbing got worse I straightened it in the other direction. Lil' bit'll do ya!

[@parktool]

I find that the two piece floating rotors tend to wander a bit and cause a small amount of rubbing. Not a big deal. Just a lil noise.

[@rewind9536]

@@parktool Thanks for the input, and you may be right. I have even had to straighten the Hope vented rotors, even though Park tools doesn't make the tool for such a big rotor. I just wanted to mix and match saint and hope parts to reduce the on and off feel of the saints. But after trying it today, the saints are too darn powerful to not have quite a lot of on off feel still. Could be the saint levers that pushes too much oil at once. I can try with XT levers and see how that feels. The Hope Tech 3 levers should be mounted on a harley davidson, being quite big and slow 2-finger levers. Hope uses DOT 4/5.1 and cant be mixed with shimanos mineral oil sadly.

[@parktool]

What size rotors are you using? I find that sometimes one step down in rotor size can gain quite a bit of modulation, if you are willing to give up some power and heat dissipation.

[@rewind9536]

@@parktool I weigh 110kg/242Ibs geared up. I can feel when a brake is to weak to stop me. :P This is the reason why I started modding my brakes in the first place. Even new Shimano XTs on 180mm rotors are to weak for my fat bottom. Now I use 203mm rotors exclusively with Saint or Hope V4, and sometimes a bit of both.

[@WilliamCronin]

@@rewind9536 my friend is 115kg and he uses xt they are they powerful!

[@johnaliposa3339]

Tnx so much calvin, have a good day

[@genedillman7811]

This was a majorly helpful video. I can do this!

[@knowledgeseeker2720]

Thanks again Calvin.

[@hemantgaikwad1389]

Nice presentation and easy to understand... Thank you

[@marcg611]

Awesome video.. sucks that both of my new RT86 rotors are warped causing actual wheel slow down.. I bought the park tool bendy tool but have a Bike Hand truing stand so probably do on bike ..

[@skatershaner]

This was super therapeutic.

[@jolynnathan8475]

I love this guy. He explains so clearly and comprehensible. And don’t ever shave away that mustache :-)

[@uno23sleep]

This is extremely helpful. Thank you! 👌

[@tokosepedamajuroyal]

yes... good info... nice presentasion...

[@that70sschwinn]

Amazing tools, great info!

[@zoumzoumzou]

life saving as usual

[@explorethebush]

Great video thanks Calvin

[@CATAPOE65]

It easy wend you have a good tool ! Thanks for video ! Regards !

[@renesteenstrup3470]

I would never a tool for that, and i´ve done it thousands off times the past 30 years.

[@rossejera1661]

how about a bent axle on a freewheel? does it affect the rotor going back and forth?

[@Shaun_Remington869]

Calvin should be brand manager

[@wanderbr1988]

Isso que eu chamo de serviço bem feito!

[@godwingodfrey5982]

How to use dt-3 tool without truing stand!?? Tnx parktool....

[@parktool]

If you sight the gaps on either side of the rotor in between the brake calipers you can true a rotor very well.

[@JuanEnriqueSerra]

Very Very helpfull! THANKS A LOT!!

[@1959DGF]

Nice one very helpful

[@mel5301954]

u can do the alignment laying down the disc to smooth heavy metal then place a piece of wood 1x2 on top of the disc and try pounding it with a rubber hammer but not so hard, start with a light pounding going harder and harder as you examine the improvement.

[@parktool]

It would be surprising if that worked, as it is hard to check the small tolerances needed against a flat surface. However, there is only one way to find out. The worst thing that will happen is you end up buying a new rotor.

[@laarrl]

0:55 for a moment i thought that was his finger lol

[@rangell281]

eu tava esperando esse vídeo, era umas das coisas que faltavam!

[@Ahmad-ll8rl]

I'm still waiting a kit that have every single product of park tool

[@charliemccloskey8358]

PascalGame indonesia lmao they have thousands of tools

[@renatochipolini4510]

Benotto México oficial page has one, it's named park tool master kit.

[@ytkb8401]

Never had the need to retrue my hope V4 vented rotors... 😎

[@zap...]

Hey Calvin! How is it that you got so warped and is there a tool for that?

[@soldier2gud4me]

Just wondering who would put their sausage close to a running disk brake.....if you know what I mean ;)

[@zwitch7635]

Underrated comment

[@notmycupotea]

better question is... who wouldn't?

[@nervy4362]

Hey, is rubbing alcohol good for cleaning disc rotors?

[@parktool]

Yes, it works fine.

[@nervy4362]

Park Tool ok thanks!

[@Skimeric]

Can i use needle nosed pliersinstead of the mtb3.2 3:30

[@hypermaniksk534]

Can this be done in local bike shop? Or can it cause some long term damage?

[@McMaxW]

I'm thinking about installing a disk brake on my brake calipers bicycle but a didn't find any good video about it. Any recommendations? Thanks in advance!

[@parktool]

Our series on disc brakes is still in the works at this time.

[@babayaga8419]

How does it bends?

[@amirajabi813]

Sram x7 or slx set? Which one suggest?

[@Calquon]

Would heating the rotor help at all?

[@parktool]

No, that will not help with alignment.

[@JesusSavesKJB]

Loved the hotdog!!

[@ronnielaxinto2818]

wow youre the man!

[@bobstokoe1332]

Nice one 👍 👌 👏 😀

[@evan6.7]

Can i use a cresent wrench?

[@ScoutJoe]

that's what I use and it does the job done just make sure it's not contaminated with oil or grease

[@MrJohnQCitizen]

you guys know how to make a video. Long live Hollywood

[@parktool]

We're actually based in Saint Paul, Minnesota, but we'll take the compliment!

[@ShermanSitter]

if it was Hollywood, Sam Elliot would play Calvin.

[@mikechivy]

Always remember to never get your pee pee stuck in the rotor

[@kolobcanyon8920]

P P Rotor. That's my next video game characters name

[@chasedeery1665]

Instructions unclear...

[@debbiejones4118]

Mike Chivy I know right I’m glad I don’t have that problem with the va-jay-jay

[@danielgumajob2589]

Where can I get that wheel aligner?

[@salvatoremazzola7945]

Can't wait to win the Park Tool Tech Tuesday #100 Giveaway! I already have the DT-3 Rotor Truing Gauge in my Cart!

[@foodformind9134]

Your a Pro!!!

[@PunjabiFoodAndTravel]

Nice

[@marcg611]

Any tips of getting brand new M8120 Shimano 4piston XT brake pads to not rattle ?? Driving me nuts..

[@parktool]

I have the same brakes and am dealing with the same issue. Will keep you posted on the solution. As of now increased spring tension and added a bit of protective tape where the fins meet the caliper body.

[@marcg611]

@@parktool lol yeah there are tons of forum threads on it but best advice was wait till they get full of brake dust. I have 2 other bikes with single pistons and the pads are def tighter in the caliper. I was thinking about either cutting and apply strips of gorilla tape or applying liquid electric tape (liquid rubber). I talked to 2 bike shop techs in passing, they thought I was crazy...it is driving me nuts..

[@marcg611]

@@parktool what tape did you use? Protective frame tape? I just don't want anything to heat up and get sticky..

[@darraghtierneymtb2116]

What giant wheels are they

[@ak_vg9715]

Great tools.👍

[@vinceking7878]

Looks Fun.

[@Phaidrus]

Apologies for chiming in but I don't know who else could give me reliable advice. I recently bought - not yet installed - a Deda Elementi 120mm stem (model: Superzero), which has a clamp height of 36mm instead of the usual 40 or 41mm. Will the reduced contact area between stem and carbon steerer tube (Cannondale SuperSix Evo) potentially endanger the integrity of the carbon steerer tube? Thank you in advance for your reply.

[@foodparadise5792]

A big fat negative. The steering tube is not made by paper, just don't over tighten it.

[@BasicUtuberNo.1990]

How do you determine the starting point of the DT 3. I see how u started here but what if the rotor was bent in not out to start with? The DT 3 obviously can't mount going thru the spokes?

[@parktool]

The starting point is the largest deviation as that will touch the indicator first.

[@BasicUtuberNo.1990]

@@parktool thanks for the response. more specifically i meant. what if the entire rotor is coned inward and the entire rotor only needs to come back out away from the bike? then the tool wouldnt touch it anywhere.

[@parktool]

This is not going to help you repair a cone shaped rotor. This will help true a rotor that is not straight.

[@pabloalbertolopez3909]

Excelente video pero sería bueno que lo pudieran subtitular o traducir al castellano , éxitos saludos desde Argentina

[@MrPhotomorgana]

Full professional video! Thank you very much!

[@oldgorillascooterclub2597]

It's Movember and he has a mustache. I trust

[@liciying]

Someone recommended me to simply ride off a hill while pressing brake, it worked lol

[@exoiwnl]

I'll try that with full brake k? 😂

[@cheryee3659]

Dump the QR... use thru bolt or thru axle less rotor bending

[@eidBike]

good

[@junboo8730]

My new bike from big box came with the front rotor vented. It is cheaper and faster just to buy a new one?. Thanks.

[@parktool]

An inexpensive one is great to practice on. Give it a shot straightening and then you have a little more knowledge. Then if you cannot get the rotor straight or it is not going well, then replace the rotor. Many rotors are slightly bent from the factory and need to be fine tuned. I find this to be true at any price point for rotors.

[@junboo8730]

Park Tool Thankssss. I will watch this video again. You are my source for my new hobby. A lot to learn here.

[@mr.wizeguy8995]

1:43 Is that black "nut" cracked on bearing plate hub?

[@parktool]

Thats just a hair. No fun cracks to deal with unfortunately.

[@jasonwu9287]

If I'm ever out on a ride and need to cut a hotdog, I'll know what to use.

[@GooDSouL-vc9hj]

😂

[@rsrakib2682]

thanks

[@riadmerou9688]

This is good with a little patience

[@MikeFavila]

I wish Calvin lived in my neighborhood and I could trade him food or beer for regular zen help