How To Fix And True A Bent Disk Brake Rotor | Mountain Bike Servicing Essentials

Рет қаралды 90,989

3 жыл бұрын

Doddy is here to let you know how to stop that irritating noise when your brakes are rubbing! We show you how to straighten a bent disc brake rotor. This helps achieve good brake pad contact in order to eliminate brake rub and extend the life of your components. This video tutorial has all the information you need to make your disc brakes straight as can be! 🔧
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Пікірлер: 83

@sharpy182 3 жыл бұрын

Just did this the other day, but another small tip for people trying this for the first time... take your rear wheel off and then put it back on without putting the chain on to the cassette, this will allow you to spin the wheel with out the sound of the freehub body engaging, that way you can listen and hear it rub. It helps pin point where it’s rubbing. Another thing to point out, if it’s still rubbing it’s worth checking piston alignment. Great video Doddie, free speed!

@rtothes936 3 жыл бұрын

Oh boy, here it goes. I hope my bike doesn't turn into a basket case.🤔🤔

@niyaz3644 2 жыл бұрын

Does this work for the front brake disc

@bjorne46 3 жыл бұрын

I used a wooden beam, and sawed a slot in it. Worked fine for me.

@lakermark2006 2 жыл бұрын

Brilliant video, it saved me a bunch of frustration and repair costs. Thank you!

@curtisf.r6233 3 жыл бұрын

Cool video Doddy👍😎helpful as always💯

@saimen1024 3 жыл бұрын

Prayers have been heard... My rear brake started to singing just a little bit two weeks ago... what a day to find out that ol Doddy has the answer for it...

@lozetchells9164 Жыл бұрын

Great tip with the Sharpie, Doddy. Thanks!

@-Alex- 3 жыл бұрын

Bro this is perfect timing, I just bent my rotor yesterday and I needed help trying to bend it back!

@chiccorocker 3 жыл бұрын

Fun I had to do this a couple of weeks ago and I indeed used an adjustable wrench, worked like a charm.

@cheronoliver6508 3 жыл бұрын

Perfect I just bought this tool.

@kpokfposkf 3 жыл бұрын

my front disc brakes just started to make noises when riding, the same day you guys are releasing this vid, how convenient... thanks lol!!

@tigerbalm666 2 жыл бұрын

Thx! I was wondering if I needed a new, rotor...but this looks like best solution.

@a100267 3 жыл бұрын

Helpful video. Most caliper alignment instructions fail to mention that they are assuming the rotor is straight. It's easy if it is but if it's already warped you'll likely have to settle for a position where the rotor rubs the least as finding one with no rub at all will be unlikely. However as said in the video a couple of light kisses of the pad here and there are not a problem. It should also be mentioned that some brakes, such as Hope, allow the pad position to be adjusted (how far to either side the pad pair are offset - not the bite point). If they are too far to one side then adjusting the position rather than bending the rotor can also cure slight pad rub, though properly centered pads are preferable.

@1davidelcid 2 жыл бұрын

thanks very good instructions, worked on the back wheel of my scooter

@henoleo 2 жыл бұрын

Thanks GCN!! you saved me from buying a new set of rotors. Spend zero bucks by following this method!! :)

@lwittrock1 3 жыл бұрын

Great video!

@pinoy_pageants 2 жыл бұрын

Very helpful thanks

@johnjackson484 3 жыл бұрын

Superb, the exact video i was going to be searching for. 😁 Great timing.

@augu_3st613 3 жыл бұрын

Seriously great timing lol. Need to do this to my bike as well was just about to start researching

@alfons5861 3 жыл бұрын

Same

@xorg83 3 жыл бұрын

Myself as well!

@thom99 3 жыл бұрын

OH MY GOD, PERFECT TIMING

@virkelie2 3 жыл бұрын

I like at 8min35sec you say you don't need to get it absolutely perfect, a slight rub is acceeptable.

@Calispeedboi 3 жыл бұрын

Once had a very small rock weld it’s self to a rotor. It made a small cooling groove in my pad 😝

@JohnSmith-tz4on 5 күн бұрын

I have several rags and a rubber mouse pad in my toolbox to keep from scarring/scratching.

@jaredcourson5207 3 жыл бұрын

Can you do a video on finding color matched rotors and if they’re good quality?

@Lunarpollo5622 3 жыл бұрын

What has me laughing is the thumbnail of the other video on why are my disc rotors bent Doddy's face 😂😂😂 kzfaq.info/get/bejne/htJogZOB3peukqs.html

@fatalbrett 2 жыл бұрын

Cheers

@patricks6672 3 жыл бұрын

A pliers wrench (without roughened jaws) would be another option as well.

@nvkulk 3 жыл бұрын

Park tool is bankrupting me!!!

@conman1395 3 жыл бұрын

If you investigate enough, you can figure out where they buy most of their stuff from. Their torque wrench is famously the exact same wrench as Pedros and Shimano just with a different outer shell (and the Shimano actually comes with bits I believe). I was able to get their brake bleed kit for $20. Has same brass bits, nice syringes, and almost everything else. Just gotta look.

@dubwizezt 3 жыл бұрын

At first I was like what are you talking about but then he showed the bending tools.....

@Kaneyyy555 3 жыл бұрын

can a 27.5 medium size MTB fit a 29er medium size bottom bracket ? I'm planning to change my three by nine to a one by ten.

@TrevTrevorTrev 2 жыл бұрын

I have this same problem on my Emove cruiser scooter.

@nicolasmorey-chaisemartin9795 3 жыл бұрын

Got a pair of SM-RT99 that keep warping slightly and no clue why. I true them. Got out, couple of hard brakings and I can hear them drag again. It's minimal dragging: no slowing down, no feeling in the lever, sound is pretty low (cant hear it riding) but still. Have I damaged them somehow? Or is it just normal behaviour?

@mavirek 16 күн бұрын

My wheel appears to wobble. Would that be the cause of disc rubbing? Or can a wheel wobble independently from a disc rubbing? My bike was shipped to me for some assembly; I heard that the disc brakes can be damaged in transit. I could see the wheel wobble when I took my first spin, and I could hear the mechanical disc brake rubbing at the same time. My powers of observation were not strong enough to tell if the two things were in sync.

@jaysonroberts5413 Жыл бұрын

All this time I have been wondering what this noise was coming from my rim. I was thinking it was the whole or loose spokes. Come to find out I noticed a bent disc break. Would that cause a noise I'm hearing?

@ccmjonnyh8187 3 жыл бұрын

hiya guys , i know it's not a mountain bike.. but its more here than road. I have a Cannondale Bad boy 1, had to go for the small frame as their standover heights were a bit tall, everything is great, but i could really do with a longer stem to get super comfy, and this is my issue, i just cant seem to find stems that fit with the funky Lefty leg, any ideas please? ps. if it could have a the handle bar fixing on the front that comes off too, as i really like riser bars too eg. my nukeproof sam hill cheers guys :)

@Sibert_ 3 жыл бұрын

8:19 Thought for a split second Doddy started drooling badly there :'D

@mtbboy1993 3 жыл бұрын

3:51 I've never tried that, but have been using an adjustable spanner for years. I've never marked the rotor, but when rotor is quite messed up I put it in the truing stand. I find it easier, more comfortable to work on it, and it's easier to get a good result. I have Hope Floating rotors which perform well, but of course the rivets can get creaky after some years of use, but so far I haven't hit an rotor so hard I bent the spider. I haven't tried one piece rotors on my new bike , I just went up in size, swapped front for rear and got 203mm at front but i won't go past that, I will just risk damaging the rotors. I see some brands don't have floating rotors, for example Brake-Stuff, I see their lastet rotor has many small venting holes, but I don't know if it outperforms my rotors or not. they also offer 2.10 & 2.20mm rotors. shop.brake-stuff.de/en/brake-discs/6-hole-is2000/75/disc-rotor-in-punch-design-6-hole-shimano-compatibel They claim many small holes will reduce the wear.

@sebbodger9807 3 жыл бұрын

could you maybe do a bike repair with budget tools :) thanks

@conman1395 3 жыл бұрын

All tools are the same in function. Just because Park mashes a tool that's $50 doesn't mean the same tool made by someone else for $12 isn't going to work the same way. Doing the job is the same always.

@tychoMX 3 жыл бұрын

To a point. About 15 years ago I bought my first specific bike tool kit to start doing things like crank removal and BB service that are fairly bike specific. Icetoolz kit... And basically nothing has survived from that kit. The edges in the hex keys were too rounded in the common sizes (4-6), levers snapped, the prongs on the needle pliers were bent out of alignment, and so on. They did their job, but they were all gradually replaced with better quality tools. They don't have to be bike specific, but as the old saying goes only a rich man can afford cheap tools. As for the original question - I think Henry had a video of all the things you can fit with a multitool. Not quite the same, but close. There's a lot you can do with a basic kit!

@onionfx 3 жыл бұрын

I have to pull the brake lever regularly as bending the discs pushes the pads back in

@bilbo3474 3 жыл бұрын

So, one of the bolts on my disc break has become cross threaded. This means it cannot be tightened on to the disc properly which now means that when the wheel spins I hear rubbing noise every two seconds. Is there anyway to fix this because hubs are expensive.

@mattiethomson 3 жыл бұрын

If the bolts lose buy another bolt if its stuck on try glowing a cheap Allen key to the bolt and waiting over night then you should be able to undo it

@cristobalmunoz9222 3 жыл бұрын

Like to who so mantenchon in new #GMBN a thes. Disk Brakes Rotors in the #GMBNTech the #Moutainbiking thanks to hubliy video good joop. Saluds of chile 🇨🇱 🤘 😀 🤘

@heathv8558 3 жыл бұрын

Hey

@paloborcin 3 жыл бұрын

Is it normal or just my bad luck, that even a new rotor isn't perfectly true? I think, never experienced to "fit and forget", Doddy mentioned in the beginning.

@devinrybarz1508 3 жыл бұрын

I tighten the rotor in a cross pattern, and make sure its exactly centered, before using the torque wrench. I look for an even amount of "meat" around each bolt head. Thats the hard part, seeing that its even all around

@delyrium_ 11 ай бұрын

Also you can use a bent rotor as a pizza slicing tool 😅😅

@James-dn1hu 3 жыл бұрын

Would most riders notice the difference between a normal air shock and one with a piggyback or is it ploseabow effect

@devinrybarz1508 3 жыл бұрын

Placebo bro. And probably not, thats for more adjustment. I would notice, i like my suspension dialed in

@user-tj4tj5di8v 11 ай бұрын

No issues with assembly for me kzfaq.infoUgkxHL1v1R3NE5x4KiYfyt8dnQmyNYz7qi5L but I could see where some might benefit from using an experienced bike assembler/mechanic. I'm an older rider starting back after a 10 year break. This bike exceeds my capabilities and has been easy to get comfortable riding. I'm mostly on easy trails with almost no street riding and have not been disappointed with the performance of the bike. My fitness level is far below what I previously rode with and because of that the mileage is going on the bike slowly. While I'm losing weight slowly, the bike seems to tolerate my 220 pounds just fine. The bike has been used by several family members ranging from 5'5" - 5'9".

@stephenhyland5516 3 жыл бұрын

Once did it with a fork

@Chaseb911 2 жыл бұрын

I'm either going to love or hate this comment LOL

@mtnmyke 3 жыл бұрын

I use a hammer. Just give it a good whack where it's out of true. You may need a hammer with a longer head to reach through the other side of the wheel. Just be careful not to miss or you could damage a spoke.

@gnosismonk 3 жыл бұрын

Best to buy new if you can

@blvck______ 3 жыл бұрын

I think the same

@hunterwright386 3 жыл бұрын

if its not badly bent, try resetting your pistons/seals

@HIGHVILLELAUNCHER Жыл бұрын

How do you do this?

@epic_blaster1871 Жыл бұрын

I must be stupid or something cuz now my hydros are completely messed up kms take it to the shop instead

@BEAMERNOOB 3 жыл бұрын

I just bend them by hand lol

@hotrockin197 2 жыл бұрын

Couldn't get it to stop rubbing so i bent the rotor in temper. Silly me. Bikes can be an absolute pain in the arse at times😝🤢😅☺

@Jackbilecki 2 жыл бұрын

Weirdest thing happened out of nowhere all my bolts fell off And my rotor got bent like a taco

@mortonfrankfire5400 3 жыл бұрын

Man I had an absolute mare with mine. I spent 2 hours swapping out rotors and all of them seemed bent. I took it to Fin down a Full Factory and within 5 minutes he worked out it was the magnet (it’s an ebike). He did some magic and I’ll post the insta link below. instagram.com/p/CF99AaeHCrf/?igshid=12zoaahzjfx8h

@qozmiq 3 жыл бұрын

7:30 into the vid before he mentions that it wont work on centerlock...SMH

@Btothewill 3 жыл бұрын

Christopher Creley only on the lower arms. You can still bend them at the edge

@chiccorocker 3 жыл бұрын

I just did it with an adjustable wrench on my center lock. Works like a charm man. What you cannot do is bend the aluminum arms if your disk has some. And actually shimano has a 6 bolt disk with those the RT86, so that also holds for those.

@marcusvinney5219 3 жыл бұрын

Am I the only person who just uses their hands to straighten their rotor?

@heathv8558 3 жыл бұрын

Nope

@mitskoala0380 3 жыл бұрын

nope, everybody does, it's a thing to hold the tools

@devinrybarz1508 3 жыл бұрын

Its better to get a feel for the steel before going h.a.m. on it

@tychoMX 3 жыл бұрын

I do for small warps for sure. Almost always I start with fingers and then move to tools if that won't do it.

@blazed85 Жыл бұрын

I was blown away when he pulled out an actual tool for the job. I've always used my bare hands. Learned how to do it without cutting myself real quick 😂