I've never seen a more knowledgeable mechanic share such valued information without a hefty price tag attached to it. And I am thankful for your passion!.
The fact that the outer portion of the disc brake is not directly connected to the inner portion of the disc brake also serves another purpose. It diminishes the chance of warped disc brake rotors. The heat of the outer floating portion has less heat transfer to the inner portion thus keeping the rotor straight and true after many heat cycles.
i have the same brake issue on my touring bike, was thinking of replacing discs as last solution, but was obvious this was not the cause, cleaned them now works like new, thank you sir!
I saw the video last week along with how to clean your drive chain,I’ve done the chain & I couldn’t believe how much grit came off the chain,it’s now very quiet,I’m going to get the disc bobbins done later this week, top job del👍
Jase from MD USA here.. Long time watcher..love every vid! this one was especially good knowledge to have as I have Galfers on my Sportster cafe/bob...in fact im gonna see how mine are doing when i get to my shop tomorrow!! Much thanks DEL!! cheers!!
Bloody good tip, thanks! All these years and I have to admit, it never occurred to me. Just goes to show, you’re never too old to learn something! 😁. That’ll be a part of my maintenance from now on.
I bought a second hand 1290 KTM Super Duke which vibrates when braking hard or accelerating while maintaining slight pressure on the front brakes. I have done this twice and did not manage to solve it. Still I thank you for the video as if this was going to happen again, I would give it another try. For now, it seems like there is not much I can do except purchasing new discs. Great video though!
I'm not a DIY mechanic in anyway, always use a dealer or independent garage. But this and the old brake cleaning video really tempt me to try. It's just a little scary messing about with probably the most important safety feature! Bobbin cleaning looks totally doable though and I will endeavor to do some caliper cleaning this season!! Thank you for sharing your skills in digestible chunks. All the best to you.
Thanks mate 👍, really appreciate your kind words, and just feel comfortable with the maintenance you do, but learning a bit more about your bike really enhances the ownership. Take care and ride safe!
@@Moonfleet41 will it's in the shop right now getting a 24k service and the brakes are being given some TLC so this is my moment to start from fresh! Bobbins first, brakes proper I might give until the weather gets wetter! Your current project bike looks awesome by the way. Cheers!
@@Moonfleet41 I did it. Bike was dropped off today after service/mot. I got my modest tools and a crappy nut and bolt, and set to work! Took about an hour, some were solid with salt (based on the white residue) and grime. They won't turn by hand like yours but they all turn. The discs move, definitely more than they did but only a tiny bit! Will do it again over the summer. Cheers
Was looking at my B-kings front discs yesterday never noticed before those bobbins move, well some do so looks like I have a job to do. Thanks Delboy this is new to me always learning 😊
I had a advisory on my front brakes. I bet this is the issue as I didn't even know about this, so never cleaned them. Thanks Del, I know what im going to be doing tomorrow.
Taj video od prije 11god sam gledao prije par godina!!!!i onda sam na svom zx12r uradio to!!! Iznenadio sam se prijatno!!!super djeluje!!!hvala!veliki pozdrav
Thanks mate! Exactly my issue. I've been riding motorcycles all my life and this is the first time I've heard of this. You just saved me a bunch of money!
Thanks Delboy , my Gsx 14 does this & I thought I need new rotors. I’ll be cleaning my bobbins now . Your knowledge is excellent, keep up the great work 👌
Perfect. I've known about the bobbins and the importance of having them free but not the extent that you've shown here (outer disc movement against carrier). Also, at beginning you mentioned the difference between a pulsing/lurching braking force rather than the actual lever pulsing, the latter of which I dont think I have so was good to identify that difference. Was looking at potentially getting new discs but I'll definitely be going to get some more brake cleaner now and some more m4 bolts (small I know) to fit through the bobbins! Cheers
Have a similar issue on the new GSX for the channel too, but it's also making a weird rattle noise (unless brake applied) so will try this later, I don't think my discs are the issue, and no pulsing on the lever, just the noise and the lurch, if it doesn't fix it..... them it's a Winter caliper refurb job 😉
Thank you so much my Pan European ST1300 doesn’t get much use so had gathered brake dust crud. All sorted with the original discs all good with not much mileage on them 👍👍
Wow! Thank you! didn't know the actual disc were floating like that. Have that exact symptom on my MT-09. No jjudder, no shaking, just a smooth pulse just before stopping. No change in the brake lever. I will go home and clean it properly :D
Oh am I glad you’ve purchased one of these machines 😂makes me confident in doing the work myself as I love tinkering, your videos helped me dearly for my mk1 bandit , hoping for more videos of work on the the big 1400 . Cheers
Hi del, saw your orig video all them yrsss ago! Glad you re-did this to make new bikers more aware of general maintenence! Top tip: buy your brake cleaner in 5ltr tins and pump sprayer 👍 save a fortune on silly rattle cans that last 5mins Keep the vids coming
Thanks for the reminder of cleaning my disc bobbins. No bad effects yet, neither on the Aprilia nor the Honda. But the front discs on my CBR 600 RR are getting old - too much movement. Have a great weekend, I'm off to ride Saxonian and Bohemian twisties. Günter/Nürnberg
I raced one of these beasts about ten years ago, what a hoot. They do not like stopping in a hurry on a good day! But that is half the fun. Had a ball trying to pedal one around and out-brake the 600's during the "all-in" end of day race. Getting it stopped by sliding it in, turning and using the torque advantage off the apex was a trick. The floating disc's would commonly flog out on the gsxr's as well and have 4-5mm of slop in them. Still did their job and they couldn't escape anywhere, but made a hell of a racket!
Thank you for that info/tip del, I admit I never knew about this tip with the bobbins as I would have put it down to a warped disk!!!. A friend of mine has a Hayabusa and the brakes are like that, will give him a call for he was talking about buying new disks, when he knows about this he will be a happy man😊. Brilliant tip del keep them coming M8. And great video as always. All the best to yourself and Penny. Don..
You're most welcome Don, it'll be wonderful if it can help him... it's not a guaranteed fix, and it's not a given that you don't have a warped disc, but washing them out is certainly the first thing to do before you go reaching for your credit card! Thanks for your kind words, we both appreciate it!
@@Moonfleet41 just passing on a big thankyou from my m8, I phoned and he brought the bike down, bobbins were all bunged up with disk and carrier solid with no movement at all, did what you did on video and front braking is now perfectly smooth with no shutters, he left here a happy man😁. Cheer's del 👍
You bloody ripper!! Love your video's mate. I've learned a lot. I watched this one this morning and had a eureka moment. My 750 sometimes grabs and I had no idea what was up... when I checked one of the rotors was stiff as "no movement at all" I'm cleaning them right now. I stumbled on a neat trick as I was scratching the bottom of the toolbox for a nut, if you use a wing nut you can use your fingers to rotate the bobbins. Thanks again mate 👍
Brilliant advice. I never knew about this. will be out to check the Very Angry Airbed tommorrow. Brakes have always been a bit weak on my bike in my opinion so anything to keep them tip top is most welcome. Always spot on. Thanks Del!
I remember that Vid😊👍. I used this technique often, and am having this phenomenon on my Yamaha Super Tenere. At low speed stops only. Most annoying, 😖. I've done the cleaning and even sanding the pads to de-glaze. It was fine for a while but has resumed 😡. Sooo, back to the drawing board for some good time fun cleaning. Rrrrr.☹️ I'm using Ferodo Platinum pads. I may upgrade to a Sintered compound pads in the future. Cheers 🍻, G. Have a great weekend folks.
Hello @Delboy's garage, I would like to tell you that you are very detailed on this particular subject and thank you very much. I am facing the same problem on a YAMAHA XP500 with the difference that my disks are new and it has not even been a week since I changed them and it is exactly the same problem you mentioned in your video ?? Do you have any advice on what I can do? Are they crooked and how can I found out ? Thank you
Do you discs have the SD system patented by EBC? SD Means Square Drive, meaning the bobbins have flat edges. I'm going to say that yours don't (many bobbins add weight to that) if you can rotate them. My discs do have the SD patent. I've given a bobbin a good try and it won't rotate. People might want to be aware of their disc construction before they get too heavy handed! Mine certainly did need a good clean out though! Thanks for highlighting the need to clean them!
Fascinating! I am quite guilty at being less than vigilant in brake bobbin cleaning. I don't think I've never experienced that particular malady that I'm aware of, but upon seeing this now, I'm thinking preventative cleaning and checking is right up there on my to do list from now on, for sure. Thanks, man!
It's a pretty rare problem to be fare, i maybe do it once a year on a bike i ride in bad weather.. so just a last resort if you get the lurching feel..!
Great , simple and free fix Del. I need to pay more attention to this. I once took a set of wheels to have new tires mounted (so I wouldn't risk damaging the rotors). When I put them back on the bike they were so far out of whack they pushed the caliper pistons in after one squeeze of the lever. To the shops credit they did make it right but it meant pulling and installing the wheels twice on the old Road King. Involved some grunting on the back wheel. 😁 Great work as always Del and Penny. Thanks and best wishes to you both. ❤👍👍
Don't you love Harley's lol! why make a job simple when you can make it a work out lol! At least they sorted it out safely, that's all that matters aye !
Ive helped 4 guys up to now with this same issue. So many overlook this little job, always worked a treat for me. Simple and effective. (Then there are those whiteboard idiots who dont believe this actually works and would rather leave all the brake dust and road grime in the areas between the bobbins and the surfaces).
Mate... I think you just saved my wallet. I was already looking for new brake discs for my 2004 GSF600 because I thought they were buckled. I had no idea that these bobbins are supposed to rotate freely...
Yes sure, they should have some sliding resistance so not completely spin freely, there should certainly be no freeplay, but if they're jammed solid, then that certainly can hold the outer disc out of alignment.
Excellent video Del & Penny. Great job mate, this one will help a lot of people that have not seen your other video, job well done. Penny and you enjoy the last part of your week, take care.Cheers
Thanks mate, the old one still gets a few hits every week, but it's so effective I just thought it was worth updating the video! Warm sunny days here, so summer's here at long last! Have a great week, D&Px
Wow, look st that for timing! Remember the accident Del where the gs500 went into a skid. Well, a guy on Facebook marketplace was looking to swap his bike for a smaller one. So we did a straight swap. I got a near mint FJ1200 model with the ABS He's well chuffed with the gs500 and likewise with me to. So, no more mishaps. Happy days
@Moonfleet41 forget to say in my original comment was that with the timing of your video on brakes, I got a bike with the anti-lock variety. So, no more mishaps 😅
Hello Dell and Penny. Great video and a great tip . I did it on my Varadero but they still make noise and i can't turn them by hand. Think i have to repeat it 🤫🤔
tried this on my ZRX 1200 bobbins which look pretty clean to start with , spritzed them down good with brake clean while turning back and forth with socket but there is no way they are going to turn with just my fingers
First time I see this, or something similar to this. I will be trying this soon as I can feel some pulsating when braking. Hopefully it's not too late. I'm guessing this is more of a preventative measure than a fix.
Not entirely convinced it’s a good idea on semi floating discs. To my understanding the bobbin’s primary function is to allow for radial thermal expansion of the outer rotor. Lateral movement isn’t critical on road bike disks. I just wonder if rotating the bobbins to free them off will wear bobbin against its disc mounting surfaces due to the grinding action caused by trapped road grit/brake dust?
Not at all mate, just go gently as i showed, two or three rotations to clear and wash out the clogged dust and allow for that "thermal expansion of the outer rotor" you talked about...as when there's no room for something to expand.. that's when it can distort !!
Nicely demonstrated Del, a very useful tip for anyone that didn't know. I wonder how many unscrupulous dealers have changed the brake discs instead of cleaning the bobbins and charged for the privilege?
That is quite interesting. I was having that problem, the thing is that i thought it was the abs kicking, thinking it was an overly intrusive system. In but it was, in fact, covering it up the real problem, junk in the bobbins. Thanks for showing this mate, you learn every day something new, but today i learnt that it needs cleaning, how to clean it and a cheat to rotate the bobbins. Certainly ill be checking every month on this bad boys. Truly a live saver. Thanks again.
Most welcome buddy, once a month is nowhere near necessary, I do mine after the winter and again at the end of the summer and that's plenty, just when they get stuck!
What if you do this, step by step, and they still won’t move? Is it possible for them to become so filled with dust that it’s impossible? I used alot of brakecleaner and twisted and twisted, but they still won’t wobble. Looking for ideas, given up for now 😅
Great video brother !! Very informative, I had no idea about those things 👍learned something new today !!! Keep up the great work brother!!! Stay safe guys cheers from New York !!!!! 🎉🎉🎉
I think that this is only true for full floating disks. My Harley Davidson Lowrider ST has warped discs after only 4000mls but they are semi floating disks and you can not move or turn the bobbins, they are fixed so the only solution is to replace them. The feeling that is described in the beginning of the video is exact what I experience.
Yes, thanks mate... what a long time ago that was.. dark and dingy, did it after work in a poorly lit garage.. thankfully the information is still current aye !
@@Moonfleet41 definitely still relevant mate... I quite liked the videos from the old garage though! I have a change of bike coming up soon, getting a CB1300 shortly as the FJR died on Sunday, and will sadly cost way too much to repair (even if I do it all myself), so I decided to let it go, and get something that will be more of a fun bike to ride
@@MintyGusto That's a great choice mate, ive had two of those over the years, easily one of the best UJM's ever made.. i guess that explains the change of username too lol! 😂
@@Moonfleet41 haha! Well spotted! It should be arriving today, so looking forward to getting to ride it later on once I have insured and taxed it! Need a top box rack for work, but other than that it shouldn't need much at all, and as you say, a fantastic UJM! Also picked up a very nice DJI drone last night which will mean I can get some fantastic aerial shots of bike nights, ride outs, places I visit and anything else of interest
@@MintyGusto Sounds like you're gonna have a lot of fun with it.. little tip you may already know... you can spin the bar clamps and net yourself an extra inch and a half of reach if they're a bit too close... i did both of mine.. take ten minutes and makes it perfect reach for my Monkey arms ! 🤣
Having the same issue on my '02 GSXR 750. Any idea if the same 8mm bolt/nut is the same size? On that note, what length is best for the bolt and how tight should it be?
Does the brake parts cleaner ever tarnish the finish on the wheels? I got some on mine and it made them all cloudy. Wouldn't clean up or polish out so I have to refinish them completely. Very careful with my brake cleaner now...
I've personally never had that problem, factory coatings are always ok, perhaps yours was painted with somthing else? Either way, pop a rag over them in future maybe?!
I’ve been chasing a front brake issue to the the point of fully rebuilding the master cylinder, brake calipers, new hoses, new pads and new fluid and still had a ‘feeling’ at the front end. Well now ‘you’ may have shown me the fix. Job for today.
Amazing video, when I tried to do this none of them ended up turning smoothly and all squeak when turned with a nut and bolt, do I need new rotors or is this somehow fixable
@@Moonfleet41 they don’t move with my fingers trying to turn them even after the break clean, they only turn with the nut and bolt with a decent amount of force, is there a way to fix this or do I new new rotors and they don’t freely move the 0.8mm of play yours had in the video
Hi del, You have helped me on a few occasions, I usually follow your bobbins cleaning method, with one exception. I use WD40 to spray away the dust. I know your not too keen on this idea to say the least, but to be fair I’ve had no problems yet. I am a bit worried about using brake cleaner, as I used some to remove dirt from my radiator a couple of years ago and it got onto my down pipes and removed my paint, I don’t want the same to happen to my discs, have you got an alternative idea?! Kind regards!! Robin
Personally i would never use it Robin.. Brake cleaner is made for cleaning brakes.. WD40 is an oil, any residue could migrate out on to the brake disc.. but im sure you know that mate.. and as long as you clean it all off, and as you said, you've never had a problem.. i guess it works for you. ! as an alternative, if you really don't want to use brake cleaner.. what about some strong detergent and cold water to thoroughly wash them out !!?
Well I have this problem too but I had clean the boobins like u did but not better, I did change brake disc and pads and still this problem, can it be ABS-giver/pump problem???
Great video. My tiger 800 2018 front disc are warped due to the disc lock being and I moved the bike a bit. Would cleaning up the bobbins fix warp disc ?
If you believe that you've buckled a disc, then cleaning out the bobbins first to double check costs you nothing and you have nothing to lose, so why not try that first... let us know how you get on!
I think my bike needs this, thanks Del. One question: Is the brake cleaner going to damage the finish on my painted wheels? They are painted black like yours. Should I be putting a rag over the wheel and tire while doing this?
It shouldn't damage factory paint mate, but if they've been painted with something else, maybe a random product, then why not be careful and just take that precaution!
Wow, that is nice and simple solution but brake disc on my bike has no bobbins. And I can't find what causes slightly different problem, that is constant, rubbing like, fairly high pitch noise which increases with speed, sound of a ballistic missile. It is definitely pad touching the disc but it doesn't get hot. Pads and disc were replaced. Calliper cleaned, pistons polished, new seals, fresh DOT4 and even bearings were replaced. Nothing made the sound go. Locating spring or retainer? I ran out of options. Any ideas?
Hi.. My motorcycle disc brakes donot have these bobbins. These are regular allen screwS directly tighten to the alloy. But i am still getting those pulsating brakes exactly as you described. What is the issue?
25 years of riding, you're the first source informing me of this. Subbed!
Thank You!
This just saved me a whole lot of money by not having to buy new discs (that i thought were warped). Thank you!!!
Most welcome mate.. glad it helped .
I've never seen a more knowledgeable mechanic share such valued information without a hefty price tag attached to it. And I am thankful for your passion!.
Thank you so much for your kind words of support, we're glad you like the videos! It's a pleasure to know that it's appreciated.
Another bit I never knew....that brake rotors are designed to "float" to optimize brake pad grab. Thanks as always!
Glad you found it interesting John.. simple and effective !
The fact that the outer portion of the disc brake is not directly connected to the inner portion of the disc brake also serves another purpose. It diminishes the chance of warped disc brake rotors. The heat of the outer floating portion has less heat transfer to the inner portion thus keeping the rotor straight and true after many heat cycles.
literally had NO idea this was a "thing". Much appreciated.
Most welcome Sir, am glad it could help you... keep safe and thank you for your support!
i have the same brake issue on my touring bike, was thinking of replacing discs as last solution, but was obvious this was not the cause, cleaned them now works like new, thank you sir!
No problem 👍, im glad it worked for you.
OMG. My brakes have been doing that for a year now. Thought they were warped. Thanks for the tip Del. Brilliant.
I saw the video last week along with how to clean your drive chain,I’ve done the chain & I couldn’t believe how much grit came off the chain,it’s now very quiet,I’m going to get the disc bobbins done later this week, top job del👍
Most welcome mate, am glad it could help you, just housekeeping aye!
Jase from MD USA here..
Long time watcher..love every vid!
this one was especially good knowledge to have as I have Galfers on my Sportster cafe/bob...in fact im gonna see how mine are doing when i get to my shop tomorrow!!
Much thanks DEL!!
cheers!!
Thanks Jase, am glad you could use it, have fun and hope it's ok!
Bloody good tip, thanks! All these years and I have to admit, it never occurred to me. Just goes to show, you’re never too old to learn something! 😁. That’ll be a part of my maintenance from now on.
Nice one mate. Glad to help !
I bought a second hand 1290 KTM Super Duke which vibrates when braking hard or accelerating while maintaining slight pressure on the front brakes. I have done this twice and did not manage to solve it. Still I thank you for the video as if this was going to happen again, I would give it another try. For now, it seems like there is not much I can do except purchasing new discs. Great video though!
I'm not a DIY mechanic in anyway, always use a dealer or independent garage. But this and the old brake cleaning video really tempt me to try. It's just a little scary messing about with probably the most important safety feature! Bobbin cleaning looks totally doable though and I will endeavor to do some caliper cleaning this season!! Thank you for sharing your skills in digestible chunks. All the best to you.
Thanks mate 👍, really appreciate your kind words, and just feel comfortable with the maintenance you do, but learning a bit more about your bike really enhances the ownership. Take care and ride safe!
@@Moonfleet41 will it's in the shop right now getting a 24k service and the brakes are being given some TLC so this is my moment to start from fresh! Bobbins first, brakes proper I might give until the weather gets wetter! Your current project bike looks awesome by the way. Cheers!
@@Moonfleet41 I did it. Bike was dropped off today after service/mot. I got my modest tools and a crappy nut and bolt, and set to work! Took about an hour, some were solid with salt (based on the white residue) and grime. They won't turn by hand like yours but they all turn. The discs move, definitely more than they did but only a tiny bit! Will do it again over the summer. Cheers
I was about to throw the brake discs out on the SRAD; this was remarkably helpful!
Was looking at my B-kings front discs yesterday never noticed before those bobbins move, well some do so looks like I have a job to do. Thanks Delboy this is new to me always learning 😊
Most welcome mate.. if you get them all turning freely... you will notice an improvement in initial feel !
I had a advisory on my front brakes. I bet this is the issue as I didn't even know about this, so never cleaned them. Thanks Del, I know what im going to be doing tomorrow.
No problem mate👍, good luck with it !
@@Moonfleet41 Just done this. they turn now but not as much as yours. But I did have 3 that didnt move that easy. Thanks
Taj video od prije 11god sam gledao prije par godina!!!!i onda sam na svom zx12r uradio to!!! Iznenadio sam se prijatno!!!super djeluje!!!hvala!veliki pozdrav
To je fantastično, drago mi je da vam video može pomoći. Pozdrav iz Engleske i vozi sigurno
I tired this and no more Brake Shudder on my 2022 Harley Fat Bob! Only took about 20min and made a world of difference. Thank you for this video.
You're welcome, glad to hear it helped!
Thanks mate! Exactly my issue. I've been riding motorcycles all my life and this is the first time I've heard of this. You just saved me a bunch of money!
Thank you, you've just saved me spaffing £500 on new discs for my bike. I was convinced the discs were warped!
Excellent advice as always 👍
wow, that's awesome mate, sounds like you should become a Patron!
@@Moonfleet41 Fair point, you usually pay for good advice and tuition, I'm in 👍
@@davebethell1 Thanks so much Dave and welcome aboard mate!
Thanks Delboy , my Gsx 14 does this & I thought I need new rotors. I’ll be cleaning my bobbins now . Your knowledge is excellent, keep up the great work 👌
You're most welcome mate, it should cure it, so at least it's the first thing you should do before you consider replacing discs!
Perfect. I've known about the bobbins and the importance of having them free but not the extent that you've shown here (outer disc movement against carrier).
Also, at beginning you mentioned the difference between a pulsing/lurching braking force rather than the actual lever pulsing, the latter of which I dont think I have so was good to identify that difference. Was looking at potentially getting new discs but I'll definitely be going to get some more brake cleaner now and some more m4 bolts (small I know) to fit through the bobbins! Cheers
Have a similar issue on the new GSX for the channel too, but it's also making a weird rattle noise (unless brake applied) so will try this later, I don't think my discs are the issue, and no pulsing on the lever, just the noise and the lurch, if it doesn't fix it..... them it's a Winter caliper refurb job 😉
Was it your disc bobbins 😂
@@bobcat7227 Turns out it was the anti rattle plate being too loose
Thank you so much my Pan European ST1300 doesn’t get much use so had gathered brake dust crud. All sorted with the original discs all good with not much mileage on them 👍👍
Thank you for your feedback. Glad it helped!
I have been to two mechanics and neither of them could solve my brake problem, now I can solve it myself. Thanks for the video!
Glad to help
Great instructional video. Well done. Just tried this and free’d up the discs Braking feels much better too.
Glad it helped mate!
Wow! Thank you! didn't know the actual disc were floating like that. Have that exact symptom on my MT-09. No jjudder, no shaking, just a smooth pulse just before stopping. No change in the brake lever. I will go home and clean it properly :D
Hi. I have the same problem on my Tracer 900. Did you try this? Did it end up fixing the problem on your MT09?
brilliant, I just checked my disc, bobbins were jammed causing brake drag........cleaned the bobbins now perfect.
Glad it helped!
Oh am I glad you’ve purchased one of these machines 😂makes me confident in doing the work myself as I love tinkering, your videos helped me dearly for my mk1 bandit , hoping for more videos of work on the the big 1400 .
Cheers
Hi del, saw your orig video all them yrsss ago! Glad you re-did this to make new bikers more aware of general maintenence!
Top tip: buy your brake cleaner in 5ltr tins and pump sprayer 👍 save a fortune on silly rattle cans that last 5mins
Keep the vids coming
You're right mate, I should buy in bulk more, so thanks for the nudge! Appreciate your long term support.
Thanks for the reminder of cleaning my disc bobbins. No bad effects yet, neither on the Aprilia nor the Honda. But the front discs on my CBR 600 RR are getting old - too much movement. Have a great weekend, I'm off to ride Saxonian and Bohemian twisties. Günter/Nürnberg
Have a great trip Günter, enjoy and ride safe!
I raced one of these beasts about ten years ago, what a hoot. They do not like stopping in a hurry on a good day! But that is half the fun.
Had a ball trying to pedal one around and out-brake the 600's during the "all-in" end of day race. Getting it stopped by sliding it in, turning and using the torque advantage off the apex was a trick.
The floating disc's would commonly flog out on the gsxr's as well and have 4-5mm of slop in them. Still did their job and they couldn't escape anywhere, but made a hell of a racket!
I have the exact problem and thought that my disc are warped. Thank you very much for this video! Great help!
You're welcome, glad it helped.
Thank you for that info/tip del, I admit I never knew about this tip with the bobbins as I would have put it down to a warped disk!!!. A friend of mine has a Hayabusa and the brakes are like that, will give him a call for he was talking about buying new disks, when he knows about this he will be a happy man😊. Brilliant tip del keep them coming M8. And great video as always. All the best to yourself and Penny. Don..
You're most welcome Don, it'll be wonderful if it can help him... it's not a guaranteed fix, and it's not a given that you don't have a warped disc, but washing them out is certainly the first thing to do before you go reaching for your credit card! Thanks for your kind words, we both appreciate it!
@@Moonfleet41 just passing on a big thankyou from my m8, I phoned and he brought the bike down, bobbins were all bunged up with disk and carrier solid with no movement at all, did what you did on video and front braking is now perfectly smooth with no shutters, he left here a happy man😁. Cheer's del 👍
Most welcome buddy, Im glad it worked. Excellent result !
And again i didn't know about the break bobbins could block up with the dust of the pads good one Del
You bloody ripper!! Love your video's mate. I've learned a lot. I watched this one this morning and had a eureka moment. My 750 sometimes grabs and I had no idea what was up... when I checked one of the rotors was stiff as "no movement at all" I'm cleaning them right now. I stumbled on a neat trick as I was scratching the bottom of the toolbox for a nut, if you use a wing nut you can use your fingers to rotate the bobbins. Thanks again mate 👍
Thank you Del!! You sir are a font of knowledge!! Thats exactly what's happening on my bike. I shall get on it at the weekend!!! 👍😎🏍
Glad to help mate, hope you can get it sorted! Ride safe mate
characteristically clear explanation and very helpful , thank you , Pete
Glad it was helpful Pete, thank you for your kind feedback!
Brilliant advice. I never knew about this. will be out to check the Very Angry Airbed tommorrow. Brakes have always been a bit weak on my bike in my opinion so anything to keep them tip top is most welcome. Always spot on. Thanks Del!
Glad it was helpful David.. good luck with it.
I remember that Vid😊👍.
I used this technique often,
and am having this phenomenon on my Yamaha Super Tenere. At low speed stops only.
Most annoying, 😖.
I've done the cleaning and even sanding the pads to de-glaze. It was fine for a while but has resumed 😡.
Sooo, back to the drawing board for some good time fun cleaning. Rrrrr.☹️
I'm using Ferodo Platinum pads.
I may upgrade to a Sintered compound pads in the future.
Cheers 🍻, G.
Have a great weekend folks.
Glad to hear the video worked, good luck with it, hope you can get is sussed! Have a great weekend.
Hello @Delboy's garage, I would like to tell you that you are very detailed on this particular subject and thank you very much. I am facing the same problem on a YAMAHA XP500 with the difference that my disks are new and it has not even been a week since I changed them and it is exactly the same problem you mentioned in your video ??
Do you have any advice on what I can do? Are they crooked and how can I found out ? Thank you
I saw your first video with Suzuki Bandit. Good job, Del! Still my favourite channel. That's all 😊
Thanks mate, really appreciate your long term support!
Do you discs have the SD system patented by EBC? SD Means Square Drive, meaning the bobbins have flat edges. I'm going to say that yours don't (many bobbins add weight to that) if you can rotate them. My discs do have the SD patent. I've given a bobbin a good try and it won't rotate. People might want to be aware of their disc construction before they get too heavy handed! Mine certainly did need a good clean out though! Thanks for highlighting the need to clean them!
I missed this before posting my comment. Spot on, I ruined my EBC discs forcing them round 😂
Fascinating! I am quite guilty at being less than vigilant in brake bobbin cleaning. I don't think I've never experienced that particular malady that I'm aware of, but upon seeing this now, I'm thinking preventative cleaning and checking is right up there on my to do list from now on, for sure. Thanks, man!
It's a pretty rare problem to be fare, i maybe do it once a year on a bike i ride in bad weather.. so just a last resort if you get the lurching feel..!
Thank you for this mate, just had this as an advisory on my MOT, gonna get cleaning them now!
No problem 👍
Great , simple and free fix Del. I need to pay more attention to this. I once took a set of wheels to have new tires mounted (so I wouldn't risk damaging the rotors). When I put them back on the bike they were so far out of whack they pushed the caliper pistons in after one squeeze of the lever. To the shops credit they did make it right but it meant pulling and installing the wheels twice on the old Road King. Involved some grunting on the back wheel. 😁 Great work as always Del and Penny. Thanks and best wishes to you both. ❤👍👍
Don't you love Harley's lol! why make a job simple when you can make it a work out lol! At least they sorted it out safely, that's all that matters aye !
Have not seen one of your videos for a while nice to see you still giving good advice 👍
Welcome back mate, thanks for your support!
I wonder if all bobbins on all rotors are meant to move freely? On my Concours (GTR1400) they’re all rock solid..
Exactly what I'm experiencing right now with my 1290GT. I'm gonna try this. Thanks for the video, subbed.
Welcome aboard, and good luck with bit, and hope it works for you.
worked awesome, justed needed drill and few hours of cleaning.
Thank you for sharing I have just purchased a ninja 1000sx with the exact same problem, will give this a try. cheers mate.
No problem 👍, hope it helps!
Never knew that. Just cleaned the bike over the weekend, need to go back and have a look.
I remember seeing the old vid when I found you 8 years ago. Simple & effective that most of of don’t do. Hand up guilty 🙈
Thanks buddy... can't believe it's been 11 years ago i posted that up.. how time flies aye !
Great. I didn't know about this free play on rotors. 30 years of riding and 30 years of discovers. Thanks
Ive helped 4 guys up to now with this same issue. So many overlook this little job, always worked a treat for me. Simple and effective. (Then there are those whiteboard idiots who dont believe this actually works and would rather leave all the brake dust and road grime in the areas between the bobbins and the surfaces).
Couldn't have put it better myself! Thanks mate
Mate... I think you just saved my wallet. I was already looking for new brake discs for my 2004 GSF600 because I thought they were buckled. I had no idea that these bobbins are supposed to rotate freely...
Yes sure, they should have some sliding resistance so not completely spin freely, there should certainly be no freeplay, but if they're jammed solid, then that certainly can hold the outer disc out of alignment.
o man.I came here to lok how to change disc because i have same problem...
I cant belive but works.Thanks man...
You are welcome
Interesting video, and usually true for OEM, but what about square drive bobbins like EBC use that are designed not to rotate?
Ive owned a Hayabusa for 15 years. Never knew this. Thanks
Perfect timing. I was scratching my head, all out of ideas.
Thank you, sir.
Shall do that tomorrow after work
Perfect, good luck with it mate !
Excellent video Del & Penny. Great job mate, this one will help a lot of people that have not seen your other video, job well done. Penny and you enjoy the last part of your week, take care.Cheers
Thanks mate, the old one still gets a few hits every week, but it's so effective I just thought it was worth updating the video! Warm sunny days here, so summer's here at long last! Have a great week, D&Px
Wow, look st that for timing!
Remember the accident Del where the gs500 went into a skid.
Well, a guy on Facebook marketplace was looking to swap his bike for a smaller one.
So we did a straight swap. I got a near mint FJ1200 model with the ABS
He's well chuffed with the gs500 and likewise with me to. So, no more mishaps.
Happy days
Good result Marc, glad you've got what you wanted... enjoy mate and ride safe!
@Moonfleet41 forget to say in my original comment was that with the timing of your video on brakes, I got a bike with the anti-lock variety.
So, no more mishaps 😅
Hello Dell and Penny.
Great video and a great tip .
I did it on my Varadero but they still make noise and i can't turn them by hand.
Think i have to repeat it 🤫🤔
tried this on my ZRX 1200 bobbins which look pretty clean to start with , spritzed them down good with brake clean while turning back and forth with socket but there is no way they are going to turn with just my fingers
Hey Dell! Maybe this tip will help my problem with the front brakes. I seem to have a bit of pad knock back.
First time I see this, or something similar to this. I will be trying this soon as I can feel some pulsating when braking. Hopefully it's not too late. I'm guessing this is more of a preventative measure than a fix.
have the same issue, ill give it a try! thnx
Not entirely convinced it’s a good idea on semi floating discs. To my understanding the bobbin’s primary function is to allow for radial thermal expansion of the outer rotor. Lateral movement isn’t critical on road bike disks. I just wonder if rotating the bobbins to free them off will wear bobbin against its disc mounting surfaces due to the grinding action caused by trapped road grit/brake dust?
Not at all mate, just go gently as i showed, two or three rotations to clear and wash out the clogged dust and allow for that "thermal expansion of the outer rotor" you talked about...as when there's no room for something to expand.. that's when it can distort !!
Well I don't mind admitting I didn't know about brake Bobbins - another lesson well taught Del - thanks 👍
Most welcome Richard.. Glad you enjoyed it!
Nicely demonstrated Del, a very useful tip for anyone that didn't know. I wonder how many unscrupulous dealers have changed the brake discs instead of cleaning the bobbins and charged for the privilege?
I wonder indeed !!
What a great video Del, clearly I need to get a can of that cleaner on my shelf. What do you recommend
Yeah, but go careful mate.. it might sting a bit in the 'regions' !
Loved this video mate!! Unreal!! I’m so grateful you posted this!!
That is quite interesting. I was having that problem, the thing is that i thought it was the abs kicking, thinking it was an overly intrusive system. In but it was, in fact, covering it up the real problem, junk in the bobbins.
Thanks for showing this mate, you learn every day something new, but today i learnt that it needs cleaning, how to clean it and a cheat to rotate the bobbins.
Certainly ill be checking every month on this bad boys. Truly a live saver.
Thanks again.
Most welcome buddy, once a month is nowhere near necessary, I do mine after the winter and again at the end of the summer and that's plenty, just when they get stuck!
Once again thanks for this Del. I had no blimmin clue about this lol. Cheers.
No worries mate, glad it could help !
What if you do this, step by step, and they still won’t move? Is it possible for them to become so filled with dust that it’s impossible? I used alot of brakecleaner and twisted and twisted, but they still won’t wobble.
Looking for ideas, given up for now 😅
Really enjoy watching your videos,great information thanks pal.
Thanks Fred👍, Glad you approve mate, and really appreciate the feedback.
Thanks I did mine today, on my 2020 tiger 900gt
Great 👍
Just went to check mine on my 2007 GSX1400. Yep they’re tight. Mine have a 5.5mm hole though in the centre.
i dont have those holes but do i just clean the whole brake and hope it works?? its front disc brake on a 2014 Yamaha Wr125x
Great tip on the brake rotor wobble. Never tried that.
Most welcome Steve. Try it if you get a problem !
I`m glad i watched this, i`ve learned something today, Cheers Del.
Most welcome Neil, im glad you enjoyed it, happy to [pass it forward !
Great tip! I will check my bike very soon. Also pass this tip through to my motorcycle friend! 👍👍
Great video brother !! Very informative, I had no idea about those things 👍learned something new today !!! Keep up the great work brother!!! Stay safe guys cheers from New York !!!!! 🎉🎉🎉
Bobbins, who knew. I for one didn’t, I do now. Thank you ❤️
Cheers Nick.. simple house keeping aye !
I think that this is only true for full floating disks. My Harley Davidson Lowrider ST has warped discs after only 4000mls but they are semi floating disks and you can not move or turn the bobbins, they are fixed so the only solution is to replace them. The feeling that is described in the beginning of the video is exact what I experience.
I remember the first time you did a video on this! Very useful information mate and hope you are both well?
Yes, thanks mate... what a long time ago that was.. dark and dingy, did it after work in a poorly lit garage.. thankfully the information is still current aye !
@@Moonfleet41 definitely still relevant mate... I quite liked the videos from the old garage though! I have a change of bike coming up soon, getting a CB1300 shortly as the FJR died on Sunday, and will sadly cost way too much to repair (even if I do it all myself), so I decided to let it go, and get something that will be more of a fun bike to ride
@@MintyGusto That's a great choice mate, ive had two of those over the years, easily one of the best UJM's ever made.. i guess that explains the change of username too lol! 😂
@@Moonfleet41 haha! Well spotted! It should be arriving today, so looking forward to getting to ride it later on once I have insured and taxed it! Need a top box rack for work, but other than that it shouldn't need much at all, and as you say, a fantastic UJM!
Also picked up a very nice DJI drone last night which will mean I can get some fantastic aerial shots of bike nights, ride outs, places I visit and anything else of interest
@@MintyGusto Sounds like you're gonna have a lot of fun with it.. little tip you may already know... you can spin the bar clamps and net yourself an extra inch and a half of reach if they're a bit too close... i did both of mine.. take ten minutes and makes it perfect reach for my Monkey arms ! 🤣
Excellent tip, I've learnt something today 👍
Glad to help, thank you for the kind feedback.
Having the same issue on my '02 GSXR 750. Any idea if the same 8mm bolt/nut is the same size?
On that note, what length is best for the bolt and how tight should it be?
Does the brake parts cleaner ever tarnish the finish on the wheels? I got some on mine and it made them all cloudy. Wouldn't clean up or polish out so I have to refinish them completely. Very careful with my brake cleaner now...
I've personally never had that problem, factory coatings are always ok, perhaps yours was painted with somthing else? Either way, pop a rag over them in future maybe?!
I’ve been chasing a front brake issue to the the point of fully rebuilding the master cylinder, brake calipers, new hoses, new pads and new fluid and still had a ‘feeling’ at the front end.
Well now ‘you’ may have shown me the fix.
Job for today.
No problem Rik... always start with the easy stuff first aye... Good luck with it, i hope it sorts it out !
welll I had no idea... Thanks Del one more job to add to the maintenance list!
Amazing video, when I tried to do this none of them ended up turning smoothly and all squeak when turned with a nut and bolt, do I need new rotors or is this somehow fixable
Are the rotos oscillating? If not, then they're fine.
@@Moonfleet41 they don’t move with my fingers trying to turn them even after the break clean, they only turn with the nut and bolt with a decent amount of force, is there a way to fix this or do I new new rotors and they don’t freely move the 0.8mm of play yours had in the video
nice tip i never knew about it. ill give mine a check. thanks del
Cleaned ....en work like new. Thanks
Hi del, You have helped me on a few occasions, I usually follow your bobbins cleaning method, with one exception. I use WD40 to spray away the dust. I know your not too keen on this idea to say the least, but to be fair I’ve had no problems yet. I am a bit worried about using brake cleaner, as I used some to remove dirt from my radiator a couple of years ago and it got onto my down pipes and removed my paint, I don’t want the same to happen to my discs, have you got an alternative idea?!
Kind regards!!
Robin
Personally i would never use it Robin.. Brake cleaner is made for cleaning brakes.. WD40 is an oil, any residue could migrate out on to the brake disc.. but im sure you know that mate.. and as long as you clean it all off, and as you said, you've never had a problem.. i guess it works for you. ! as an alternative, if you really don't want to use brake cleaner.. what about some strong detergent and cold water to thoroughly wash them out !!?
Well I have this problem too but I had clean the boobins like u did but not better, I did change brake disc and pads and still this problem, can it be ABS-giver/pump problem???
Great video. My tiger 800 2018 front disc are warped due to the disc lock being and I moved the bike a bit. Would cleaning up the bobbins fix warp disc ?
If you believe that you've buckled a disc, then cleaning out the bobbins first to double check costs you nothing and you have nothing to lose, so why not try that first... let us know how you get on!
I think my bike needs this, thanks Del. One question: Is the brake cleaner going to damage the finish on my painted wheels? They are painted black like yours. Should I be putting a rag over the wheel and tire while doing this?
It shouldn't damage factory paint mate, but if they've been painted with something else, maybe a random product, then why not be careful and just take that precaution!
@@Moonfleet41 Thank you sir! Your videos have been more useful to me than any others on TH-cam!
Wow, that is nice and simple solution but brake disc on my bike has no bobbins. And I can't find what causes slightly different problem, that is constant, rubbing like, fairly high pitch noise which increases with speed, sound of a ballistic missile. It is definitely pad touching the disc but it doesn't get hot. Pads and disc were replaced. Calliper cleaned, pistons polished, new seals, fresh DOT4 and even bearings were replaced. Nothing made the sound go. Locating spring or retainer? I ran out of options. Any ideas?
Thanks for that. Always wondered about those rings.
No problem 👍
Hi.. My motorcycle disc brakes donot have these bobbins. These are regular allen screwS directly tighten to the alloy. But i am still getting those pulsating brakes exactly as you described. What is the issue?