Bike Disc Brake Caliper Disassembly/Assembly (Avid BB7)

Подписаться 492 тыс.

Просмотров 40 тыс.

50% 1

I show how to disassemble and re-assemble an Avid BB7 mechanical disc brake caliper. I also show how the mechanism works. I just thought it would be fun to see what was inside, and see how it works. I cleaned and lube the parts. I replaced the three ball bearings, but I really didn't need to. If they show wear or damage, they should be replaced. The ball bearings were 5/32" balls. I lubed the parts with marine grease. I considered using Sil-Glyde which I have used for disc brakes on cars. But I decided marine grease might be more available to people watching this video than Sil-Glyde.
Service Manual for Avid BB5 & BB7:
www.sram.com/g...
▶ SUBSCRIBE & HIT THE 🔔 bit.ly/SubRJThe...
👍 And please give my video a thumbs up 👍
▶FACEBOOK.com/RJTheBikeGuy
/ rjthebikeguy
▶TOOLS
www.rjthebikegu...
▶SHIRTS
bit.ly/RJBikeGu...
▶WEBPAGE
www.RJTheBikeGu...

Опубликовано:

15 окт 2024

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист

Посмотреть позже

Комментарии : 130

@RJTheBikeGuy Год назад

For more bike repair videos hit the subscribe button 🛑 and click the notification bell ► bit.ly/SubRJTheBikeGuy

@bob-ny6kn Год назад

If I could, I would pin this comment. :)

@RJTheBikeGuy Год назад

@@bob-ny6kn Thanks!

@drinkintea1572 Год назад

You and ParkTool are one of the best things that could happen to the bike community, thanks for all your work RJ

@Gjifdxvv Год назад

hard agree

@Koofumhead Год назад

Well said. We are in danger of becoming dependent on corporations for basic things. I'll be able to keep an obsolete bike going thanks to people like RJ

@candango44 Год назад

An extremely useful video. But Avid has changed the assembly since you made the video, or I have an earlier version. The two bolts holding the caliper halves together are the same length and they are Torx, not 5mm hex. More important, when they are removed, the two halves seem glued or bonded together; they don't separate. At least they have not separated yet. Still working on it.

@GrigoryRechistov Год назад

I was just going around in thoughts of overhauling my BB-7s after this winter. So much salt on the roads this winter. This video comes right on time!

@timgarland8619 Год назад

Without a doubt these are the best non-hydraulic brakes out there. They are certainly better than many low-end hydraulic models. Great explanation of how they work and how to over haul them! (By the way, we are getting spoiled with all the new content. Welcome Back!)

@andreybatashov2183 Год назад

What do you think of TRP Spyke / Spyre?

@mattgies Год назад

@@andreybatashov2183 I like them better than the BB7, myself.

@cgrocho47 Год назад

@@andreybatashov2183 The TRPs are a better design, since both pads move towards the rotor. The Avids deflect the rotor against the stationary pad.

@stevem2531 Год назад

@@cgrocho47 Agreed, though the BB7s look much easier to service than the TRPs.

@ryang5441 Год назад

@@stevem2531 The TRPs aren't bad to service at all, the first time I tore it down it only took about 25 minutes to do the whole thing. I do think the value isn't there considering they're more expensive than a lot of hydraulic calipers though.

@lucafwn Год назад

It's like a watchmaker servicing a watch, but with human-sized components. Very relaxing - and very interesting, even if I will probably never service a caliper myself. Thank you RJ!

@artbikescomics5804 Год назад

Another awesome video RJ. I really like how you can make something that appear complicated look easy. Gives us home bike DIYers the knowledge and confidence to work on our bikes. Thanks again

@davidreidy5750 7 месяцев назад

Just overhauled my rear BB7(finally)holy cow brake pad replacement was way overdue and man took my rig for a spin and bike is like brand new again🗽♥️

@Toto-is8ci Год назад

SO happy to see your cardboard work surface back on you tube RJ. You have been an essential resource for my bike repairs for years. THANKS so much for coming back to us!

@MikeNBikes Год назад

I took apart my caliper to grease it. I don't know where I messed up along the way but it wasn't functioning correctly. I went on Google, found a black and white manual (color would of been helpful when the product itself is all black) and I went on RU-vid, and found a video posted by you, the first words I said outloud were "THANK. GOD" Thanks RJ

@greggregory2554 Год назад

Thank you for taking the time to do this. Disc brakes were a complete mystery before this. My front brake has been engaging then then losing grip with a loud clunk sound like something has jumped out of place. At least now I have an idea what might be failing.

@Wellesix Год назад

got thousands of k's on my Surly Disc Trucker's BB7's.. I reckon I might have to give this a shot. Thanks for making that a possibility RJ!

@Herbybandit Год назад

There is a grub screw to adjust tension on the spring, if you backed it out then it makes putting the arm back in place much easier, many cable operated calipers also have a tiny grub screw hiden on the outer adjustment disc to lock it in place, it's very easy to overlook this one and then struggle to move the adjuster.

@snakerstran9101 Год назад

I have a question on my mind, and you might possibly be addressing it. I have several low-end single action calipers and they all have a tiny set screw in the body and going in perpendicular to and butting up against the threads of the fixed pad adjuster. It seems to be a bit of a mess and varies across the models. They are obviously intended to apply tension/locking to keep the adjuster from inadvertently turning. Some have a small plastic plug between the set screw end and the adjuster threads, and some don't. The screws that don't have the plug have damaged the adjuster threads by essentially plowing into the threads. It brings me to my question. Are these set screw supposed to be backed off during the fixed pad adjusting or is a proper set screw/plastic plug preset supposed to be left alone during pad adjustment?

@Herbybandit Год назад

@@snakerstran9101 yes the set screw is there to stop the adjuster moving, yes there is supposed to be a nylon buffer to stop, as you point out, damaging the thread as it’s soft aluminium, you’re supposed to slacken it off, do your adjustment then tighten it just enough to stop the adjuster moving as over tightening will destroy the nylon buffer

@jarvisskooge8602 Год назад

Excellent video… just got done rebuilding a set on my Pugs a few weeks ago. Best mechanical brakes I’ve used and I’ve got em on several of my bikes. 😊

@angry_tardigrade Год назад

Great vid! I can't believe that "a light coating of grease" was indeed a light coat and not a huge squirt from the grease gun :D

@kierancreaven9582 8 месяцев назад

Smooth, clear, concise, comprehensive and very helpful. One of the very best instruction videos I have ever seen on any topic. Well done and thank you.

@al1843 Год назад

Great video as always. Amazing how much more complicated these are than hydraulic brakes.

@bob-ny6kn Год назад

Hydraulic calipers rely on perfect alignment. That's scary.

@sebikelifeusvetparatrooper Год назад

RJ just watched your Quill stem removal worst case scenario from 2013 all I can say is WOW and EPIC the patience you had on that video keep up the great work CHAMP🥊💯😃!!!

@doylerabjohn3435 Год назад

Thanks, I am new with disk brake & I just got a bike with disk brakes. I plan on give it a tune-up and resale.

@secondlifebikes80 Год назад

I noticed for the small red adjuster knob, it looked like it didn't go in all the way in enough. Before you took it off, the metal tab came out further than when you reinstalle the knob. It also looked like the "arms of the knob doesn't need to be lined up with the metal 4 prong washer. I was comparing the part of the video when you took it off and when you put it back on... not quite match in installed depth. But since I've never taken these apart, I can't say anything other than the observation. Great video requardless!

@drbobjohnson812 Год назад

Thanks RJ, I just installed a NOS BB7 on one of my bikes. In the future hopefully I will remember this vid when it comes time to service it. HNY to you and yours, and to all the RJ fans as well

@nicolascar7922 3 месяца назад

Again Rj The Bike Guy saving the day

@grunemann4490 Год назад

Fantastic videography! And your audio is excellent. I'm now 100% confident to do my own overhaul. Can't wait to experience perfect braking on my newsed HP Velotechnik Street Machine.

@wals6383 Год назад

I know that this would be a nightmare to put back together without your great video! Thanks for the detailed step-by-step instructions. 👍

@AM-pp5rl Год назад

I would had never imagined that mechanical calipers were more complex than their hydrologic counterpart.... Thanks RJ

@DouglasCarnall Год назад

As ever, this is a great video and worth watching in its entirety, but if you're just looking to change the pads, and want to understand what you're doing, watch the first few minutes then skip to [18:58]

@davidgerro3486 3 месяца назад

really useful video. Well done and thankyou. To improve the accuracy of this video I would recommend only One small dot of loctite. That is easily enough. Less grease is required as well on the threads.

@h3n488 Год назад

Ah! I would've needed you and this video about 4 months ago! I did this by trial and error, but in the same way, as it happens. Thanks for an entertaining video!

@thomashughes_teh Год назад

I have a pair of these on a bike I own. This was a valuable video for me. I'm sure mine are not yet at the service interval depicted, but that's bound to change.

@dav6239 Год назад

Thank you so much, This provides so much value, I'm more confident in my mechanical abilities. I love hydro discbrakes, just got my first bike with mechanical ones.

@Romin.777 Год назад

Simpel but genious design. :) I am so done with leaking levers, and will look into mechanical disc brakes.

@polaroidandvans Год назад

The trick with these, other than getting the piston back in, is that the torque arm throw will be off if you don't have the piston seated flush. If the torque arm throw is off, you'll have little to no modulation and spring back of the lever arm. That and the pad on the piston side will not retract all the way. Note the position of the torque arm before disassembly.

@fl_omar Год назад

I think this is my issue..how do I resolve?

@davidwildstallionjohnson4458 Год назад

Great video, very informative. no longer fear the disc. Well, the cable activated ones anyway.

@rodrigogamboa213 Год назад

Justo lo que estaba buscando Gracias y saludos desde Chile

@krzysiu4003 Год назад

Amazing. I almost bought one last year just to take apart and see how they work.

@BenitoAndito Год назад

Soon Avid will be using this video for training at the factory.

@GreenJimll Год назад

Another great video to add to your bike mechanics video toolkit! Super stuff - thank you.

@hdrdr2 5 месяцев назад

Awesome! Great video ...........saved me a headache from having someone else working on my bike.........thanks!

@meckkz387c 2 месяца назад

You helped me build a lot of really cool bikes RJ thank you so much

@rosariobavetta8639 7 дней назад

Perfect video, helped me with a seized caliper adjuster

@paulahavens2764 Год назад

that was great now I know how to do this. Maybe you should have put new pads on it while you took it apart.Thanks for doing this. I would also show how it came off the bicyle and how to put it back on. I put this video in my save column so when I have to change my brakes I can do it. Again thanks loved the video.😀👀👌

@RJTheBikeGuy Год назад

I could have. But the old pads had lots of material/life left and they cleaned up pretty well.

@paulahavens2764 Год назад

@@RJTheBikeGuy thanks for your reply will continue to watch your videos.

@mikefox-cf1jl Год назад

Thank you for putting this together. what a wonderful video.

@ruggerocesana8451 Месяц назад

That was so useful! Thanks from Italy.

@DKTV26 5 месяцев назад

Super helpful and great instructions. Thank you!

@Ad-wv8zt Год назад

Another excellent tuto. Tnx RJ. Happy Holidays, and Happy New Year

@stephenlewin9834 Год назад

Excellent video, and excellent timing. I was planning on doing this to my brakes soon. This will be a HUGE help!! Thank you very, very much

@giorgiopuentes7889 7 месяцев назад

Muy buen video, pocos conocen la excelente calidad de esta mordaza. Saludos.

@RRYACF 7 месяцев назад

I had the big stationary piston seize on my first set, you need to do this regularly

@djproducts1768 Год назад

Your videos are awsome So dont stop posting them👍👊

@FishyWaterFilms 7 месяцев назад

thank you so much for publishing this!

@nelsonsilva6842 Год назад

Those bb7 have better quality than some hydraulic calipers!

@sphexes Год назад

Love this! Thank you for such great details.

@lucywucyyy 6 месяцев назад

i love that torque wrench

@dogcrapper 22 дня назад

Thanks for the video. Helps me out!

@dougduehring3792 Год назад

Exactly what I needed. Thanks!!

@druiz127 Год назад

Great tutorial,I’ve learned a lot from your videos, thanks. how long have you been fixing bikes?

@lolcat9744 Год назад

Can you do a hydraulic brake assembly/disassembly? Great video btw!

@1zanglang Год назад

Best non hydraulic affordable disc brakes. I am not up to date, but if I think TRP makes some mechanical disc brakes with both sides mobile. The only advantage they have is that if the rotor is perfectly centered and the pads adjusted properly, the rotor would not flex. I find this quite irrelevant for the ordinary cyclists who don't use extreme braking force. I use BB7s for about 10 years now and never had issues with them.

@Subideable Год назад

Awesome work RJ

@vegancreature838 Год назад

Amazing video, thank you RJ, you are the best 👍🏻

@andrews3994 3 месяца назад

Unbelievably good video! 🙏👌

@mattgies Год назад

Fun fact: Those ball bearings are the namesake parts of the BB-7 (and BB-5).

@tristanwwsd 6 месяцев назад

I read a long time back that BB7's had 7 balls and BB5's had 5 balls. I see now, that is not right.

@vicroberts9876 2 месяца назад

Excellent job!

@ForGlory1 Год назад

Thank you RJ

@ФантомасФантомасов-ш6и 4 месяца назад

Thank you! 👍 Could you please make the same video for BB5?

@EaglesFan-k7s Месяц назад

Just used your video and saved 50quid doing it myself

@c4shurik 5 месяцев назад

Спасибо БРО!

@fl_omar Год назад

Good video! But I need help.. I've got a zoom 280 caliper on the back of my trek 3500d. It looks similar to what you have there. My issue is that when I put the pivot arm back together there doesn't seem to be enough tension in the spring. So when I push the brake lever it stops the bike..but it doesn't spring back. I'm not sure how to get more spring tension into the lever where the brake cable attaches. It seems that I only have like 1/2" of cable travel between released and braking positions. What could be wrong with the way I assembled it?

@solarheat9016 Год назад

When you finished re-assembly the adjuster knob on the lever arm was not pushed down all the way.

@Henry-m7o Год назад

Thanks bro much appreciated 👍

@reallyhighupnorth Год назад

Wow, thank you for making this

@1I3b 6 месяцев назад

You are the best! Thanks.

@stevemccarthy6350 Год назад

excellent video, thank you

@slideman. Год назад

excellent video. very helpful.

@roncooke2188 Год назад

Very interesting enjoyed this great video Better than tv

@vernonsmith-wk2qb Год назад

excellent well needed,thanks for all your work

@beef539 Год назад

Very well done video--5 stars

@Noop-Noop56 5 месяцев назад

Im having qn issue where my brake pads aren't lininb up in the caliper. The pads and spring are installed correctly but the top of the pads (bunny ears) wont seat properly so i get sort of a teepee shape from the pads. Any advice?

@sparkoftruthblazeoffire8517 Год назад

Very Helpful Thank you. well done

@bob-ny6kn Год назад

So many calipers with compromised springs. How is the spring sourced?

@christo930 Год назад

Should you be putting so much grease in this? I would imagine grease and brake dust would make a fine sandpaper.

@MattExzy Год назад

Each to their own. Given their low load and low actuation rate, I wouldn't bother myself. But perhaps there's some wisdom.

@tonyconnors1342 Год назад

Very interesting really enjoyed it thank you.

@illorgan Год назад

For someone with an early model bb7, they don't split in half and need a special tool, the "mdt-1", to service. Same operating principles though.

@RJTheBikeGuy Год назад

Hmmm. I haven't seen one of those BB7s.

@candango44 Год назад

@@RJTheBikeGuy: I think i must have one of those as well. The caliper halves seem bonded together. Trying to figure out how to remove the pistons

@UnhingedHarry Год назад

Nice. I might do mine.... one day :)

@moguls914 Год назад

You're like the Scotty Kilmer of the bicycle world but better

@zoshimuddin1899 2 месяца назад

Thanks a lot 😊

@thomasm5899 Год назад

Perfect video

@toxicteabaging Год назад

Great work RJ, very enlightening as always!

@timhull8664 Год назад

Red rubber grease is ideal for brake assembly.

@aeseroo28 Год назад

What if I don't have that glue? What else can used?

@picbal-standup 7 месяцев назад

Super useful video. Thanks, RJ the Bike Guy. I have a question. Apologies if someone asked it already. On my BB7, rear side, the outter arm (and perhaps related piston) is rather lose and has a lot of play. It does not seem to affect the efficacy of breaking but it generates a noise whenever I turn. It is as if one of the pads touched the rotor. however, when I cycle straight, there is no noise. Have you got any idea about it ? I could have a separate conversation if it is convenient. I can give you my phone number. THanks again. Pierrick,

@rogerwyatt8612 Год назад

Do you know of a kit to put disc brake on a adult tricycle

@thomasariss9601 Год назад

RJ I have a question inst avid disc brakes SRAM brand

@RJTheBikeGuy Год назад

They are now. SRAM acquired them in 2004.

@thomasariss9601 Год назад

Thanks I wasn't too sure I thought they were sure am nowadays but I wasn't too sure because that's what I put a lower end model on my specialized hard Rock because I switched to the front to this and right now I'm trying to find where that special bracket where you can on a vintage bikes where you can convert it into this trying to find the right one is very hard thank you so much

@jeffreyardziejewski2547 Год назад

You da man

@jamieeedden777 Год назад

U got anything on the sort of wheel that has gears and breaks in the hub in having some problems with a bike it's called a gazelle touche apparently made in 1995

@RJTheBikeGuy Год назад

ru-vid.com/group/PLxO5aF0sensj8O6aRwxUSfnzQVAl9GWWD

@jamieeedden777 Год назад

@@RJTheBikeGuy thankyou looking at doing though my collection and selling some of Mabey donate a few to charity as the numbers are getting out of control