How To Clean And Resurface Disc Brake Rotors

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  • Опубликовано: 30 окт 2024

Комментарии • 123

  • @tri-seeker2753
    @tri-seeker2753 Год назад +127

    There is exactly ZERO reasons for car disc brake cleaner to contain ANY lubricant. They serve to exactly SAME purpose as bike disc cleaners do, so only difference could be retail price.
    Also, automotive segment do not sponsor GMBN Tech, so perhaps...

    • @derTeddy
      @derTeddy Год назад +21

      the comment i was looking for. I buy mine in 5L canisters an use a pump bottle. Also WAY less waste then buying 300ml aerosol sprays.

    • @LaurentiusTriarius
      @LaurentiusTriarius Год назад +3

      Exactly 🎉

    • @tt-rs1457
      @tt-rs1457 Месяц назад +1

      So, you're totally wrong.
      These Brakecleaners are using a protection, you can clearly see leaving a resedue on the brakes.
      For automotive, it will be a no problem.
      But the tiny Brakes on the bike can not handle it.
      Always using something without any protection, like Acetone.

  • @andrewturnbull9304
    @andrewturnbull9304 Год назад +47

    Automotive brake cleaner may contain lubricants. I’ve never laughed so much since I saw Ebike specific cleaner advertised.

  • @mistreku
    @mistreku Год назад +56

    I'm sorry, but I don't think I need specific bike brake cleaner. Any automotive cleaner will do the job. What's that with it might have lubricant in it? It's made to clean disks!

    • @TriqxterRB
      @TriqxterRB Год назад

      Lubricant is made to reduce friction, I for example usually use WD-40 for my suspension and it usually drips down onto the discs. The result is brakes that barely get any grip at all, they also sound terrible.

    • @akamarinos
      @akamarinos 10 месяцев назад +3

      I'm using automotive disk brake cleaner, works fine and it's much cheaper.

    • @jjmmjj9999
      @jjmmjj9999 10 месяцев назад +6

      @@TriqxterRB yeah, exactly. Why do you want lubricant on your brakes? You don't... Automotive brake cleaner doesn't have any lubricants, as again, yon do not want lubricants on your brakes especially on a car.... Yet the host said "don't use automotive brake cleaner" which is just fake information

    • @locksnpropsfpv7255
      @locksnpropsfpv7255 9 месяцев назад +3

      Brake clean is brake clean . Lube is lube

  • @CharlesHanesIV
    @CharlesHanesIV Год назад +63

    The bike industry is so weird, I've been working on cars and bikes for 25+ years and I've never bought any bike specific cleaning or lube products except carbon friction paste. Also sanding those rotors without using a flat surface could lead to high/low spots which will cause chatter...

    • @snappyfish
      @snappyfish Год назад +3

      Yep it's a faff the bike trade..

    • @geovanemaia9307
      @geovanemaia9307 4 месяца назад

      Concordo plenamente!🇧🇷

  • @slavnyan1152
    @slavnyan1152 Год назад +37

    Quite a bit of misleading info here.
    - No disc brake cleaner will have lubricant in them, especially the automotive types.
    - Sanding rotors like that will damage them if sanded too hard or won't do a thing if sanded too lightly.
    - Discoloration comes from overheating the rotors. The worst ones I've seen had all the rainbow until blue, meaning they've reached above 300 Celcius at some point. That will not affect your braking at all (excluding time they are hot in the form of brake fade), but in rare occasions excesive heat can warp the rotors if they are cheap, or get in contact with water while heated.
    Just clean and check the width of your rotors from time to time and throughly clean them if you are changing pads. That's all the maintenence you will need

    • @mtbboy1993
      @mtbboy1993 Год назад +2

      Great info. You are correct.

    • @sd5458
      @sd5458 Месяц назад

      Thanks I think you saved me from getting specific sandpaper and a bunch of unnecessary shit. I'm changing pads, different type even, (organic over to sintered). I'm going to thoroughly clean the rotors with the brake cleaner I already have, swap pads, bed them in and move on with my life.

  • @rogerortegamoline5880
    @rogerortegamoline5880 Год назад +53

    I find it a bit sad that GMBN is turning into a product advertising site... Peaty's is a business venture by Steve Peat... Any brake cleaner for the automotive industry with trichlorethylene works perfectly. If your brakes work well, do not touch them, you only have to clean them if you know they have been contaminated. And if you sand the discs as you teach, what you are going to kill is the flat disk surface...

    • @markhagal
      @markhagal Год назад +2

      Ok mom🙄

    • @Shawn-in-da-Canyon
      @Shawn-in-da-Canyon Год назад +3

      Do you expect them to do these videos for you for free? I don’t see you chipping in any money! This is their business. They have to make money to run the business, pay the bills and feed and house the family. And no, it’s just about impossible to kill the flat surface with sandpaper.

    • @murrijuana2842
      @murrijuana2842 Год назад +1

      ​@@Shawn-in-da-Canyongrifters gonna grift...

    • @DownHillgamer
      @DownHillgamer Месяц назад

      Yeah all this bike specific stuff is ridiculous, I'm a engine builder and machinist and use to be a detailer so I got tons of chemicals and detergents and cleaners and when I walked into the bike shop they were trying to sell me all kinds of bullshit, and then he told me that simple green had AMMONIA in it and not to use it lmfao, like brother no it doesnt

  • @gorgon4061
    @gorgon4061 Год назад +25

    120 sand paper is way coarse for this purpose.

    • @geovanemaia9307
      @geovanemaia9307 4 месяца назад

      Pensei logo isso quando vi a lixa!🇧🇷

    • @heinzi-dq1sd
      @heinzi-dq1sd 4 месяца назад +2

      600, 1000, 2000 and polishing it and of course cleaning it with ipa is the way to go.

  • @tomquimby8669
    @tomquimby8669 Год назад +10

    Either the chair is too high or the bench needs raising. If I was you Anna I would raise this issue with HR regarding a poorly setup working environment.

  • @davegee124
    @davegee124 Год назад +28

    lubricants in brake cleaners?...ive never heard such wrong information sorry.

    • @mtbboy1993
      @mtbboy1993 Год назад

      Maybe she misspoke, but she mentioned bike cleaners, they can be super slippery and effectively lubricate the rotor, I experienced this with Motorex, it was like dish washing soap, super slippery, and if not blasting the rotors brakes would get contaminated, Finish Line, Muc Off don't do this. But yes they at least not to the same degree.
      But degreasers you are meant to wash off will be like this too, the one from Muc Off is, but not the Dry degreaser, they dry, no rinsing needed.

  • @wonderwatch2239
    @wonderwatch2239 Год назад +19

    According to Ollie from GCN, (phd in chemistry) acetone is the most effective grease cleaner, that doesn’t leave residue 👌

    • @reinholdachleitner2069
      @reinholdachleitner2069 Год назад +4

      I agree,acetone is and it's much stronger than IPA but more hazardous.💯👍🏻

    • @neiv9574
      @neiv9574 Год назад +7

      It's a more potent solvent but it has the disadvantadge of attacking plastics and rubber seals

    • @lucani4428
      @lucani4428 Год назад

      @@neiv9574 correct, be careful with acetone!

    • @gmbntech
      @gmbntech  Год назад +2

      Great point! Acetone is a lot stronger. We'd only suggest using that if IPA doesn't work and you take extra safety precautions and have previous professional experience using it. 👍

  • @Lann91
    @Lann91 Год назад +9

    "Something of a fine grit", shows a 120 paper, lmao. Also, in what world a car disc brake cleaner contains a lubricant?

  • @HenkP85
    @HenkP85 Год назад +2

    Did that to my Code Rotors and Pads after just bleeding the brake was not successful and it really worked for me. No need to replace all that. Cleaning and sanding a bit does the job quite well.

    • @gmbntech
      @gmbntech  Год назад

      Nice one! Good to know, Henrik! We're glad that worked for you! It's a nightmare having to replace pads and rotors. 😬

  • @_Zane__
    @_Zane__ Год назад +16

    I feel like a sanding block would be better if you want to scuff the flat surface than sand paper and your fingers

  • @dad7720
    @dad7720 Год назад +8

    There is absolutely no difference whatsoevet between auto and bike discs, auto disc cleaner will work fine on bikes and vice versa. And who in their right mind would ever put wd40 on a disc!!

  • @sepg5084
    @sepg5084 Год назад +11

    Isopropyl alcohol is what i use, the ones that have no fragrance on it.

    • @gmbntech
      @gmbntech  Год назад

      Nice one! That's perfect! 👍

  • @bitumen83
    @bitumen83 Год назад +6

    I have noticed that on GMBN every now and then they talk about CLEANING disk brakes.
    For more than 10 years how long I ride bike with disk brakes I had only once problem, when I by accident spray wd40 on rear disk. And that was when I started to work on my bikes long time ago.
    Honestly disc brakes are realy hard to be dirty, because surfaces of breaking pads and discs are very ofter in contact, creating friction and high temperatures. So they cleaning them selfs.
    I have never used disc breake cleaner or sand paper on them, no need.

    • @Finnspin_unicycles
      @Finnspin_unicycles Год назад +2

      I don't think I have gotten much contaminants on them, but cleaning and "resurfacing" helped a bunch of times against squeeky or underperforming brakes. I think it's actually not getting them hot enough that often causes issues for me, but I can't magically make bigger hills appear..

    • @tri-seeker2753
      @tri-seeker2753 Год назад +2

      Unless you get oil on them, they're fine as they are.

    • @mtbboy1993
      @mtbboy1993 Год назад

      if you ridde in contaminated puddles, like with oil leaks by tractors, cars and so on, you can contaminate the brakes. but if it's wet and you brake a lot the rotors might eventuality work better, but always best to clean them if they are contaminated.
      But without any contaminants there is no need to clean them. Resurfacing on the other hand you sohuld do when it's glazed.

  • @mtbboy1993
    @mtbboy1993 Год назад +9

    I am surprised to hear you saying there might be lubricants in disc automotive brake cleaners. That can't be right.

    • @michaelgiessing2492
      @michaelgiessing2492 8 месяцев назад +3

      Yeah. It's not right. The automotive stuff is cheaper and works just fine IMO.

  • @germurphy4986
    @germurphy4986 Год назад +7

    Any bike specific cleaning/ maintenance product is a rip off. Automotive brake cleaner is perfectly fine to use.

    • @sd5458
      @sd5458 Месяц назад

      $3 at Walmart

  • @AverageReviewsYT
    @AverageReviewsYT Год назад +7

    Video starts at 5:11

    • @KevisSquatchin
      @KevisSquatchin 11 месяцев назад

      People sure like to hear themselves talk don’t they.

    • @AverageReviewsYT
      @AverageReviewsYT 11 месяцев назад

      @@KevisSquatchin yeah I do this time stamp often.

  • @Tunis7444
    @Tunis7444 9 дней назад

    What can I use to make my discs waterproof, to protect from rust? Thanks

  • @namzarf
    @namzarf Год назад +2

    The rotors you are resurfacing look like Shimano XT Ice-Tech (SM-RT86?). The stainless steel surfaces on these rotors are "sandwiched" over an an aluminum core. Personally, I would resist removing any of the stainless on these rotors by sanding them. In my experience, these rotors will get a "burnt" looking color---the price you pay for the technology. This does not affect the performance, just clean them thoroughly with alcohol. Finally, I would emphisize replacing these rotors once the thickness has reached 1.5 mm.
    Sanding is acceptable if your rotors are solid stainless.

  • @Eric-fx9xf
    @Eric-fx9xf Год назад +1

    Thanks again.

    • @gmbntech
      @gmbntech  Год назад

      Thanks for watching, Eric! 👍

  • @No_ReGretzkys99
    @No_ReGretzkys99 26 дней назад

    What's the best grit of sandpaper to use when resurfacing the rotors and pads??

  • @1969Escobar
    @1969Escobar Год назад +3

    Anna great video!!! cheers🤟

    • @rider65
      @rider65 Год назад

      🙄🙄🙄🤦‍♂🤦‍♂🤦‍♂

    • @gmbntech
      @gmbntech  Год назад

      Thank you! 😃

  • @LaurentiusTriarius
    @LaurentiusTriarius Год назад +2

    Automotive brake cleaner doesn't leave residues it is its purpose 😂
    Geez. It's also cheaper than the overpriced bike specific ones.

  • @silaslai5913
    @silaslai5913 10 месяцев назад +1

    Didn't know what y said
    Car break cleaner I use all time

  • @dundundata7603
    @dundundata7603 Год назад

    I use ISO and regular paper towels and no special cleaner. When commuting my bike gets absolutely filthy, whether it's road dirt, salt, corrosion, etc. My trail bikes stay much cleaner. Depending on your conditions YMMV. The motorway was a good example because roads are littered with a different kind of filth than good ole' trail dirt.
    I'll spray the pads with some ISO and then wipe them clean. Sometimes with bad weather/salt they get some corrosion (I always use metal pads). In that case I take some 220 wet/dry paper and give them a quick sand following by ISO clean.
    As for rotors I don't tend to mess with them too much unless swapping to new pads. I like the ISO/sanding here as well before bedding, or anytime there is a lack of bite. Once bedded they tend to work fine thereafter.

  • @reinholdachleitner2069
    @reinholdachleitner2069 Год назад +1

    Nice video,my rotors ended up cleaning themselves,no need to de-glaze them and now they bite really nicely.Looking forward to the next tech video,pedal and cleat maintenance would be a cool topic.💯✌🏻👌🏻

    • @mtbboy1993
      @mtbboy1993 Год назад

      You won't need to sand them rotor nor pads until they are glazed.

    • @gmbntech
      @gmbntech  Год назад +2

      Thanks for the support, Reinhold! Cheers for the content suggestion!

  • @covakfilms9939
    @covakfilms9939 Год назад +6

    437k people were just exposed to bad advice. Do no try to refinish rotors with a sand paper. It will create high and low spots. Which will create vibration and pulsing.

    • @No_ReGretzkys99
      @No_ReGretzkys99 26 дней назад

      Then what do you recommend using instead of sandpaper?

    • @covakfilms9939
      @covakfilms9939 26 дней назад

      @@No_ReGretzkys99 the proper way is to use a lathe.

  • @jcskyr33
    @jcskyr33 9 месяцев назад +1

    Can you print a retraction automotive brake clean is the same a bike , it has zero lube in it as it is designed to clean rotors and remove all oil. Wd40 is different

  • @Alan-75
    @Alan-75 Год назад

    I've got SRAM rotors and the braking has suddenly become crap even though new pads are in and I cleaned the rotors. The rotors have gone a browny golden colour where the pads touch and they do get hot quick. Is it time to replace them?

  • @spencer936
    @spencer936 Год назад +3

    Circular motion sanding? I had success using 220 grit and a back-and-forth motion. Good stuff GNBN.

  • @glen3509
    @glen3509 Год назад

    My nephew just bought new disk brakes, nothing high-end, he bought Shimano Altus. I was wondering if he should clean the rotors? And if yes, will alcohol swabs/wipes work?

    • @sd5458
      @sd5458 Месяц назад

      They'll work, but half of the "action" is using a rag or microfiber, something that actually abrases the rotors. Just dabbing and trying to scrub with an alcohol wipe won't be enough.

  • @harissarajevo3267
    @harissarajevo3267 5 месяцев назад

    Pleas3 help me I use 100% alcohol to clean rotor and my brake dont work. When I press brake my bike go. What to do?

  • @oj1345
    @oj1345 Год назад

    Do you know why my brakes stops gripping after cleaning rotors with disc brake cleaner? Just wiping rotors with rag and after that brakes feel like they’ve contamined. Im not sure if winter has something to do with this, but so you know what could be reason?

    • @thomasmaynard7200
      @thomasmaynard7200 Год назад

      You probably need to bed them in, there is lots of advice online on how to do it, but basically just gradually brake harder and from higher speeds, to heat stuff? Idk the specifics, but yh bed them in

  • @BoomerMTB
    @BoomerMTB Год назад

    OT... In my MTB experience (many years now) disc brakes are robust and hard to contaminate. Just general care is needed, i.e. keep lubes away.
    *Have you had unexplainable contaminated MTB disk brakes?
    Just ready the other comments and this does seem to be out of place "How to".

  • @andyarchitect
    @andyarchitect Год назад +2

    Where do you actually buy Isopropyl Alcohol? You can pick up Methylated Spirit (the purple stuff) in DIY stores and even supermarkets, but I have never seen Isopropyl Alcohol on the shelves anywhere. Also can you not just use Methylated Spirit? It is good for removing any grease and oils before painting. I have used it as a substitute on my brakes before without any negative effects.

    • @scriptosaurusrex
      @scriptosaurusrex Год назад +1

      Pharmacy.

    • @mtbboy1993
      @mtbboy1993 Год назад

      Try a hardware store, I bought mine at Würth. Ask for Isopropyl alcohol. It might be labeled as IPA Cleaner, in Germany it can be labeled as IPA-Reininger, Which is what Würth uses. IPA is the english abbreviation.
      The can says Isopropanol on mine, But that's in Norway. But as am in Norway it's called Isopropanol, or isopropylalkohol.

    • @playgroundchooser
      @playgroundchooser Год назад +1

      Is isopropyl alcohol not common on the east side of the Atlantic?

  • @stephenkohler3472
    @stephenkohler3472 Год назад

    Thanks Anna! This helped a lot

  • @GerhardGeficky-jg4ok
    @GerhardGeficky-jg4ok 29 дней назад

    I've never noticed glazed rotors and I ride all year in Canada . I just throw them away when they are below spec.

  • @Milessongs
    @Milessongs Год назад

    #askgmbntech How can I determine which size brake mount adaptor I need? Recently swapped dropouts on my SantaCruz Chameleon; 27.5+ to 29er. The old dropouts included a 40mm side-mount adaptor. The new 29er dropouts are top (or post) mount, and did not come with an adaptor. My 180mm rotor 'bottoms out' in the caliper before the axle lines up. Seems like I need a top mount adaptor to raise the caliper, but how to determine the size? Love the show, thanks!! #askgmbntech

  • @michaelboljang7451
    @michaelboljang7451 Год назад +1

    Why not put it in the dischwasher? bad idea?

  • @tehalexy
    @tehalexy Год назад +1

    Why not upgrading to a bigger rotor when you're toasting ur usual rotor?

  • @Sceme1991
    @Sceme1991 7 месяцев назад

    I'm pretty sure that automotive brake cleaner is the exact same stuff as one meant for bicycles (acetone) and the only difference is significantly lower price. I can't think of a single reason anyone would add lubricants to a brake cleaner. That makes zero sense.

  • @iamcyberpunk68
    @iamcyberpunk68 Год назад

    NAIL POLISH REMOVER AND SAND PAPER KICKS ASS. RUBBING ALCOHOL ON THE PADS THEN A LIGHT SAND WITH 220

  • @psychonaut038
    @psychonaut038 Год назад +3

    I never clean them. I break them clean. Lol. Never have any braking problems.

  • @Mark_Tishman
    @Mark_Tishman Год назад +1

    Is a 40% vodka goes ok instead alcohol ?

    • @garfieldfan3892
      @garfieldfan3892 Год назад

      should be yeah
      not as powerful i guess but should do something
      eto ruski sposob (its the russian way)

    • @playgroundchooser
      @playgroundchooser Год назад

      tempting, but there's a lot of "other" material in vodka. Everclear may work though.

  • @jessed0308
    @jessed0308 Год назад

    Im not gunna leave any big disc jokes........i promise.

  • @Neo_The_One_
    @Neo_The_One_ 3 месяца назад

    Somone lied about automotive brake cleaner not being safe.

  • @carlroy1865
    @carlroy1865 7 месяцев назад

    they made brake cleaner illegal in canada.

  • @andresrodriguezperez8597
    @andresrodriguezperez8597 Год назад

    Just in time video, just couple of days ago my forks blew Up and my front rotor got completely dipped in oil 🤣🤣

  • @SpikymtnBiker
    @SpikymtnBiker Год назад

    crc Brake-Kleen leaves no residue its automotive grade

  • @tylerdesrosiers
    @tylerdesrosiers Год назад

    Great video. I will be doing this on my bike, my calliper may be leaking as they are brand new brakes and they squeak and don’t work properly (rear only)

  • @thedetailingdoctor5746
    @thedetailingdoctor5746 2 месяца назад

    120 is not a fine grit 😂 I’d start at 320 or 500

  • @statom985
    @statom985 9 месяцев назад

    Soooo automotive cleaner is ok for cars and motorbikes which have their rotors constantly on the open on the road but they are bad for bikes which were transported like 1-2-3 hours ?
    oh dear

  • @luizcarloszimmermann5505
    @luizcarloszimmermann5505 Год назад +2

    Reviso sempre os freios das minhas bikes ; segurança está neles

  • @observingrogue7652
    @observingrogue7652 5 дней назад

    I hate this so much, but thank you. I'm so looking forward to RegenBraking replacing this mess, entirely. So much time & money lost, on this garbage system.

    • @observingrogue7652
      @observingrogue7652 5 дней назад

      This vulnerable, garbage system, you have to baby way more then ebike batteries. What if the disk could be sealed from the environment, but still be cooled down? Like some kind of box, with a fan, air to air heat exchanger and filter for the brake dust. Or just be done with this entirely for dual motor Regenerative Braking.

  • @andrewhenly9057
    @andrewhenly9057 Год назад

    Where did youi get the squirty bottle of alcohol from?

  • @thomasmann6891
    @thomasmann6891 29 дней назад

    Is it ok to use car brake cleaner rather than there’s overpriced mic off and the like please ?

  • @pavels470
    @pavels470 Год назад +1

    Or use rim brakes

  • @MarioGoatse
    @MarioGoatse Год назад +1

    This is why I unsubscribed from all your channels. You guys have ruined this channel by shilling products. I thought I’d click this one and see if it was different, but nope. Still on that same unethical behaviour.

  • @KevisSquatchin
    @KevisSquatchin 11 месяцев назад

    A 10 min video of BS. Here I’ll save you the time of watching 10 minutes. Spray rotor with brake cleaner and wipe off with a microfiber cloth. 🤦🏽‍♂️

  • @enriqueflores4094
    @enriqueflores4094 Год назад

    use a Torch !

  • @bobothericefarmer1878
    @bobothericefarmer1878 Год назад

    Mmmmm

  • @kevins5016
    @kevins5016 Год назад

    What a waste of time

  • @Grincannabis
    @Grincannabis Год назад +2

    Brakes were invented by cowards.😆

    • @garfieldfan3892
      @garfieldfan3892 Год назад

      youre going to die on trails i went brakeless on bmx on a small easy trail and was prepared to fall the whole ride. mostly because i had one foot off the pedals to brake but yea
      bmxs look cooler without brakes though and actually my brakes didnt even work

  • @atharvdwivedi4201
    @atharvdwivedi4201 Год назад +3

    First like