Bottom Bracket Standards Explained | Road Bike Maintenance
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- Опубліковано 22 тра 2016
- Step into the bottom bracket standard maze with Simon Richardson. Don't worry, he knows his way around.
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BB30? PF30? Octalink? Hollowtech? The world of bottom bracket standards is about as complicated as it gets in cycling. Simon explains all in this video.
Watch more on GCN...
How to change a threaded bottom bracket ▶︎ gcn.eu/1VfBdFW
How to resolve bottom bracket creaks ▶︎ gcn.eu/1TuyjIR
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Leave us a comment below! - Спорт
I didn't enjoy this video, but I did need it. Thanks for the tough love, GCN.
Zach Bonte ثي،6ص
Those words I was looking for to describe my feelings
I love my old school square taper bottom brackets. They are very simple and easy to work on, and there is a sea of aftermarket cranks to choose from. No creaks either.
I think the manufactures are confused about the definition of the word "standard".
agreed.. standard should mean: once one is published, if you want to be standard as well then you need to follow what's already out!
Lmao, I think alot are confused with that! They put alot of labels and they don't even apply!
Some new person or company comes up with something new and starts to change the whole industry by trying to get their new stuff labeled standard to change the whole industry , if it's better may be debatable in a small percentage of the time .
We as cyclists are good at suffering and I've done mine for the day. I watched that the whole way through.
These videos are extremely helpful. I've been a bicycle mechanic at multiple shops, but there is always something new to learn. Thank you for the details, and the presentations in these videos makes the learning process much easier. I'd recommend these videos to anyone (novice or seasoned rider/mechanic)
I give up! I'm buying a motorcycle.
It is cheaper lol.
hahahahahahah nice one!
Lol
Wow. Simon, you are a BB King. No wonder you've got the blues... :(
That's a pearler! What a comment! Haha love it.
Comment of the week
Comment of the year right there ^^^^^^^^
KKKKKKKK
I saw what you did there. Brilliant.
Absolutely love your sense of humor. Thanks for making a topic bearable to watch!
More videos like these! I thought it was awesome how you talked about the chronological order of each, sizes and methods of attachment and compatibility. Great video, Si!
Hi Si, thanks for informational videos. I changed my BB and the bike is riding like new. you have a calmness but confidence that helped guide my way. No more creaks!
All you actually need to know: Hollowtech or similar external threaded bearings (Mega Exo etc) are awesome. Anything involving bearings pressed directly into the frame is annoying, fiddly, stupid, hard to work on, creaking, unreliable, potentially frame-destroying crap that should be avoided.
I agree, still have to deal with press-fit headsets though, argh!
This one of your best videos ! Great job deciphering all this mess.
You've got to be one of the best talkers on UA-cam, always a pleasure to listen to you explain things.
well done Simon! I can't believe you managed to keep that to under 8 mins and explain it so well. Top class.
But what about BB-8?
You can leave, now!
+mrsherlocked will be hard to fit in your frame ;D
thanks very much for this! bottom brackets have been something i haven't been able to keep track of, so this was super informative and helpful!!
had to re-watch this twice to get the info I needed! Simon deserves a promotion for explaining this, it must have been worse than watching paint dry then followed by grass growing.
I just have a $60 Huffy cruiser that I ride once every other year, so I think I am in over my head watching this video...
Legend! Thanks Simon! Saving this video for when I do my bike build. Golden rules!
I literally JUST bought a crankset for a bike I acquired on CL and don't know the first thing about bottom brackets. Thanks for such a cogent and thoughtful presentation. You ROCK.
GCN is the best cycling resource around. Messed about for ages trying to figure out how to repair my bottom bracket. Watched the first 30 seconds of this and new exactly what to do.
Thanks GCN! You just saved me a lot of time and my headache switched from BB-standards to consider wether to stick with my BB30 power meter or "upgrade" to a new more compatible one... :)
What an informative video, this is good information to know.
Don't worry, Si, this video was quite handy. I'll watch it before I go to sleep.
I genuinely needed this! Can always rely on GCN for help :D
Thanks for this video. Very informative. Once I was confused, but I have more clarity on the different types of BBs available. Maybe you can do one video on headsets too. Threaded, non-threaded, integrated, semi-integrated, press-in cups....etc. Really got me head spinning when I was building my dream bike from sourcing all my parts online a while ago.
Long live threaded Italian and threaded English brackets! They simply don't creek as much! Super important if you build your own bike : )
yes well agreed i have one too,
my fave GBN personality; funny as hell. rock on Simon!
Excellent video, dude! Thanks a lot here from Brazil.
Thank you so much for this info! Great to know!
Thank youuuu!! Love this video.
this is actually really good and informative. thanks GCN!
the primary advantage of the square taper spindle cartridge bottom brackets is you could select a spindle length that would allow you to position the crank in any line that you would want relative to the cassette. doesnt appear that any of the other systems would allow for repositioning of the crank.
This was educational for those of us kind of new to road biking, thanks!
Salute to you sir. You managed to sum up +20 yrs of tech progress (or regress) in under 8 minutes. My take is this is a classic case of manufacturers just going out there to create their own systems and calling it new tech without doing us mere mortals any favours about ease of maintenance, compatibility, functionality etc so they can sell more bikes and components.With BB design, it may benefit a 'if it ain't broken, don't fix it' type approach.
Yes :) Finally BB hell has been explained. Cheers mate.
I've got a titanium frame with PF30, without the bearing press tool.
I just pushed the cups in by hand as far and as straight as I could, laid the bike on its side, and placed a flat piece of wood over the cup then knocked it in with a rubber mallet.
Worked like a charm.
Very nice, love it.
Good explanation!!
Thanks 😊
Really clear - thanks
thank you guys! i'm one step closer to understanding this :-)
That was a head fuck.
Sure glad I changed out the cranks on my Atala back in '74. A lot fewer choices to worry about.
No one ever improved on the conventional threaded bottom bracket. All these pressed bearings are just cost savings passed on with the tagline of "increased stiffness". If they only put them on exotic bikes I might believe them....but does anyone really think an aluminium hybrid bikes needs a 10% stiffer BB? Threaded cups are expensive as they are a component unique to cycling, they require increased labour at the OEM factories to cut the threads. Press fit bearings are just bought from a catalogue, its a task every engineer is familiar with.....going on the skf catalogue and choosing a bearing. They even give you the CAD model.
BB30 is nothing more than a roller bearing with an inner diameter of 30mm and an outer of 42mm. You can get a bag of 50 of those bearing for under £5 from a bearing specialist, some don't even bother counting they just sell by the Kg.
But don't fool yourselves...its not like they use high quality Japanese bearings anyway!
No kidding. Not only is it awkward to put on there's little indication if that standard will continue to be used. Bsa forever.
Axles are a bigger headache now that QR isn't the only option for road bicyclists now and companies are figuring out what to steal from mountain bikers since disc brakes are popular.
+seanek9 Threaded bottom had their issues. First off, Italian threading needs to go the way of French and Swiss threads into obsolescence. I noted decades ago that bottom brackets were too narrow and too thin. Funny thing is that external bearing bottom brackets have addressed both concerns without requiring any changes. Right now your best bet is a British threaded 68mm bottom bracket with external cups.
+Bill Oooo'Reilly mainly because the stiffness comes from the frame not bearings and crank has very little to do with it too. So BB type doesn't matter, just depends on what standard the manufacturer uses. So basically, and Si did say this, different bottom brackets are only there so the manufacturer can say they've done something new. Doesn't matter which one you have they all work the same and there's a converter for everything now. Rotor makes two bottom brackets that will fit any frame and any crank so just get those two, any bike you want and any crank you want. Also, everyone will say companies scam you and it seems like they do, but it's not just bike companies. For example I work in a restaurant and food for 100 people costs under £250. Can you do that shopping in your local shop? So restaurants are a scam too? And you eat at them I assume.
Bmx bikes use press fit bb, they must be better for certain aspects otherwise they wouldnt be used to this day even on bikes that cost over £500-£600 and above
Everything in this thread is true. The main thing to consider is that press fit “standards” , in most cases are very simply poor engineering designs.And most frame’s shells are even more poorly manufactured to PROPERLY accept bearings so they will spin proper and last a full service life. AND you get to PAY for this crap on your high end bike. Many bike companies have gone back to threaded. What does that tell you?
Good job GCN, this is the first time I fell asleep watching one your videos.
Great video. As always.
I'll stick with my Hollowtech for now as it's cheap and easy to service and it certainly doesn't creak.
Helped me soo much! Thanks m8 ;)
Very informative
... making a Look 595 an outstanding frame choice, given its threaded bb and awesome features
One nice addition to this video would be to explain changing a press fit to threaded. There are a few companies who make those.
one nice addition would be to advice any buyers to stay away from press fit altogether and make sure whatever bike you buy is threaded... I seriously used that as a disqualifying mark when I was buying my last road bike, any non-threaded BB frames where automatically scratch from my list.... Maybe it makes sense for pro racers that do not have to give maintenence to their own bikes and possibly get a new frame every year... but for a bike enthusiast or even for an amateur racer who has to suffer through long rides with creaky BB I think press fit makes very little sense.
Just went from square taper to Hollowtech II BB and the difference is night and day imo. I Will never go back to a st bb ever again.
I have FELT F5 with BB30, after 5 years I replaced the bearings for $25 last year, very happy with. I think I will stick with BB30 on my next project Chinese Carbon bike
Some of my frames are 35 years old and I have no problem servicing them. But I can't imagine a pressfit BB frame still performing without creaks after 10 years. I find it depressing that modern frames are disposable.
RT1, my own standard: one side threaded the other one pressed but the pressing surface outer ring is not completely round so you need a special bearing press and the crank is 20.1mm on one sied and 20.2 on the other side (the whole thing is set up that your frame cracks when you get it wrong)
Good job! 🤓
Big thanks for this video. Now when bottom brackets come up in conversation I can just pull this video up and show my friends why I hate bottom brackets so much
Love this video. Helps me sleep
I didn't know there was that many types of BB :P , i'm still using square taper on my MTB and hollowtech on the road bike , the square taper BB had to be replaced for a new one after 14 years service and many thousands of miles , compared to hollowtech they are really heavy but bomb proof , I recon hollowtech will still be here 20 years from now just because like square taper it works and works well
Congrats Simon! you managed to say "bottom" more times than in any other GCN video.
BSA bottom brackets 4ever. I hate creaks.
4 weeks earlier and this video could have saved me a lot of research :D good vid though!
I see coming in a near future the new "standard wars" about wheel axles. With disc brakes startig to enter road market, 12-15 PT, some with traditional axles, some frames include adapters, 9mm standard axle in the rear 12mm front... and that will affect your choice of wheels. Would be good to see a video about pros and cons, and also your idea/brands idea about what the standard will be.
About BB, as it was determined by frame manufacturer, now is another thing to look at when you choose your frame or bike. I am afraid of making the wrong choice and not being able to find BB or chairings for my axle in the mid future. Until now, Shimano is the best bet in terms of longevity in catalog, and actually much prefer threaded. Unfortunatelly, in mid-high end bikes each time is more and more difficult (even impossible) to get threaded BB. So, this video is ok, but I think is worth another one just about which one to choose.
Also I love the look of internal cables, but I hate them deeply. But none mid-high frame has external cabling any more.
LOL... you guys are great! this vid hurt my head!
Great video, Si! One question: what about asymmetric BBs? Are these pretty much always 68mm or are there different sizes?
As I now own three bikes with press fit bottom brackets, I decided to bite the bullet and get a bearing press. Yes, it cost a good amount of cash, but I suspect it will pay for itself in the long run as I replace bearings in the various bikes.
My Cannondale CAADX 105 SE (mileage 1200km or 600miles) makes all kind of noises, from creaking to clonking. Amazing what sounds a cyclocross, that has just been ridden onroad, can produce. My first and last Cannondale.
I feel for you. Have you heard of Hambini bbs? Hes on UA-cam.
@@johndef5075 Thanks mate. I got rid of the CAAD already tho, it wasn't worth it
Works the way it is supposed to. Just Good
completely head melting! as much as I don't want to, I think I have to watch this again to really get my bearings on this! 😂
Every minute of your life is one you will not get back. Good info, although you didn't go far enough back for me to find out what I needed. I'm restoring a 60s Monark Speed Racer. Weird stuff down there.
@Ming Lee 感謝您的翻譯!!
my favourite is square taper cup and cone - riding on proper 1/4" bearings will always be better than most of the toys shown here
1:18 Haha haha funniest thing I've heard all week!
I have a press fit 30 and I’m changing it to a BSA for my bafang BBSHD motor
Wow,i like it
Thx Si. Yet another reason I ride only lugged steel with English BB.
I have on old peugeot ps10 gold frame, with a strong light 35x1 bottom bracket. Is this swiss threading ? Which direction should I turn to remove it and what modern BB can I replace it with ? thx for the video
The great thing about 'standards' is that there are so many to choose from.
Sticking with my english threaded 9000 BB for a long time.
So what I want to know is which bottoms bracket is the best? I know it’s all subjective, but which one performs the best? Which one has had more issues? Which manufacture should I be avoiding because of their BB?
I'll keep it simple... I'll stick with the old square one... it works.
That works, I just changed my type of bottom bracket and I’m really happy with the external type
Very educational video (thanks), which left me with a question.
Could I change my Ultegra 6700 groupset with a Campangnolo groupset (dont need it, just always wanted one)? Anyone???
My main concern is the bottom bracket, and I believe that I currently have BB 68 mm on my 10-speed 2010 Specialized Tarmac.
What would be the best approach to do the swap?
Thanks.
BB Mania 😲 !!
This is useful ,I just replaced my treated bottom bracket .
How many "standards" does it take until there is no standard?
All of them? 0.o
So close!!! These aren't quite the droids I am looking for.
Nice
Well done! =
OK are sealed units any good durable as is it cheaper to just replace the bearings on my old original bb axel
any advice on loose spokes during ride, some unwind and start to rattle but they were tight before the ride
The T47 is basically a threaded PF30. The good folks at Enduro Bearing shipped mine with adapters to fit SRAM GXP (24mm/22mm) so not just for 30mm spindle. Now if only my SRAM Etap would get here...
SI you are officially invited to my beautiful German hometown of Aachen! I need you to show me how to remove an old Octalink crank withouth the crank remover !
Could you guys make a video on how to prevent cramps when riding?
don't forget FSA megaevo bottom brackets. their threaded version for bb386 or for 386evo cranks. IMO the best option. 30mm diameter threaded bb, the best.
you should do a vid on the shimano 5800 ,6800 or 9000 front mechs as they are a pain to set up
I have a press fit OSBB bottom bracket on my 2009 Specialized Roubaix. Will any new crankset fit this? How do I decide what new crankset is compatible?
What about a rotor 3D+ Crank (longer 30mm axle) into a bb86/bb86.5/bb92 frame with Pf4130 bottom bracket?
hey man, great vid. just wondering if you could clarify... the bike im buying has a sealed cartridge bottom bracket... i just want to know... is it gonna end up creeking like my walmart bike did?? i cant find the specs on the walmart bike.. this is driving me crazy
Thanks for this! I'm still confused - but not as much.
hi, can you do a tutorial on UCI Indoor cycling?Thanks