that bb in the sl6 was very smooth, I can not lie there

Your bb are never in stock. I want one for my winspace T1500

I just got your BB92 installed (Orbea Oiz M frame) and wow… instant noticeable difference coming from a shimano BB92. The bike mechanic who installed it was very impressed (it was his first hambini bb install) said he loves watching your videos. Thanks for making such a great product!

Threads are not “unwanted” if it solves a major problem

Yea just get a hambinie bb sorts all problems by crappy quality control , and crap engernieng

AMEN!,

The issue with the threaded is that it doesn't creak but it doesn't mean it's working efficiently. The cups might as well be quite misaligment and it'll mark the axle and adds friction.

Every bike ive ever had has been lrress fit never had a issue

only because of crappy mechanics

Pressfit is so finicky that you need such high quality to put it on par with threaded BBs. Most frames don't have such finely machined shells.

@@kurt1391 threaded requires more quality control, the difference it just doesn't creak, but adds crapton of drag

@@ebigarella literally the best bb are the European press fit bb that are on bike bmx company’s like DK been riding it for 4 years hard never had a issue..

that could be somethig, for sure with maintained so early because I am sure with there power being pushed out on a pressfit bb it gets creaky fast

This is truth!!

Press fit bearings are so easy to install, all you need is a Mallet and a rag to bang them in, I have a bmx with press fit mid bearings been riding it for 4 years and i haven’t had to service them at all and literally zero creaking however i have a dirt jumper and i had a 3 piece crank euro bb and that took a shit within a weak little bearing demolished out of the casing. All these threaded bb are, are just a money pit designed to eventually brake and spend so much money on bb when they eventually take a shit on you. Spent $40 on a threaded euro bb and didn’t last nothing

My old mountain bike had a press fit BB, I really disliked it when it came time to replace. My new mountain bike has threaded, I am very glad it has threaded, I just replaced the BB and it took me a 1/4 of the time than it did with press fit.

Glad it helped!

shimano standard bb are really nice bottom brackets for the money I never had any issues with them either, I have had some go a little early, but it nothing crazy enough to complain about

Haha take the inherent inaccuracy of a threaded interface and make it bigger.

@@galenkehler T47 was developed to ease the use of larger diameter tube mitering in metal (custom) frames. I REALLY don't understand what is going on if it gets adopted by major carbon fiber manufacturers.

What happened to the frame??

Yes awesome system I use the wheels manufacturing screw together pressfit seems to Eliminate all problems with the pressfit bottom bracket

I have one from Wheels Mfg. It makes the best out of a bad situation, but it's still not as good as threaded and can creak.

Literally the best bb are the European press fit bb that bmx bikes come with been riding for 4 years on it and haven’t had a issue..

You can extract and replace the bearings without removing the BB

Exactly. I have a bmx with press fit mid bearing ridden it for 4 years and haven’t had to do anything service on it and literally zero creaking so idk what’s the complaint about press fits when i haven’t experienced not one issue

this is true!!

This is the problem with "trickle down" technology. Something that works with premium materials, manufacturing methods and QC may not work to that standardard in mass production.

heck no, press fit mid bearings swap the world, they literally last forever.

Question, many bike companies use press fit, if they are bad as you say they are I have not heard many complaints about them? Have you? Just curious, I am thinking of my own bike build.

Good post Luke, however.... there is (IMO) no way to absolutely guarantee that the 2 bearings are concentric and parallel unless the press-in BB is one piece (and that 1-piece press-in BB is machined using a method that puts the two bores into the shell absolutely on the same centerline and with perfectly parallel "shoulders" for the bearings to seat against). The thread tolerances (correction: thread "clearance") on a Wheels Mfg. screw-together BB are -- (by design, I assume ) -- quite sloppy. Not only does that allow the two bearing to be slightly out of line and/or out of parallel (ESPECIALLY if the end faces of the frame BB shell are not parallel and dead square to the bore), but I have seen a number of "screw-together" BB solutions start creaking AT the threaded interface. Solution? -- (albeit a somewhat temporary one): pull apart the BB and Loctite the threads. Voila... creak is gone. I've seen it many times. The "big picture problem" (once again: IMO) is that virtually NO manufacturer spends any time making the carbon BB shell correctly. Every one I've ever measured is out of round, typically has some taper from one end to the other, and almost NEVER has the end faces of the shell square to the centerline. In relatively common aerospace practice, a couple of layers of glass over the carbon, then pick up the part and grind the BB bore and kiss it with a hone, and machine/grind the end faces of the shell square to the centerline. Then we'd have press-in bores that are on size, straight and round, and done properly. Of course NO bicycle mfg will ever do this. Ditto on thread-in. "Thread in" is not a guarantee that the the manufacturer machined the left and right threads dead concentric and parallel (or that the outer "seating faces" are perfectly square to that theoretical thread centerline). I *seriously* doubt that ANY manufacturer is addressing this relatively simple machining concept adequately. as before: IMO

Agree. Threaded BB for life, FTW. Cause I can reuse the Threaded BB. After disassemble the Threaded BB from frame, I am using heat gun to heat the Threaded BB and take out the bearings, so easy. Then reheat the Threaded BB again and put back new ceramic/NSKvv/NTNllb bearings into it. Cost me just USD40 for hi-quality BB 🤭 No need extra care, no need big tools, no need to pay extra for hi-precision bearings, you only need to change the bearings, that is what I call Engineering, hi-performance, easy maintenance, low cost. Now my hi-performance reused USD40 Threaded BB same to new USD400 PF BB 🤭 Choose your side! CFRP (Approx 40% polymer 60% fibers). What happened when you force PF BB to the BB shell made by 40% of plastic??? Btw, I am using Trifox X16TA frame. Trust me, got little experiences manufacturing Airbus and Boeing's CFRP panels. Happy ending 🧑‍🔧🚵

@@Necromonger69 Its not widely discussed. For one this, the public doesn't understand mechanical engineering. Not to be oblique but its like asking someone how a CPU works inside a computer. If you are building a bike and you have the option, build with BSA or T47. Truthfully the 'thread together' bottom brackets used in a press fit BB shell work well. But it is a needless workaround. A bandaid for a problem that shouldn't exist.

@@agie170hss2 You have a good feel for what is going on and your points often come up...Hambini who I give little credence to, brings these arguments which are only valid at the margin. A book can be written on this and don't want to spend the time to discuss it too much. Short version is...cartridge ball bearing tolerances are very forgiving for lack of co-axially of slightly mismatched bore centers of opposing cups where bearings are captured. This is why BSA bb's work so well. Yes, quite right, bike companies are not going to spend the 'money' to make tolerances perfect enough to make press fit BB's viable. Hambini one piece bullet design BB's which yes are perfect for bearing alignment are awful for the BB wiping the bottom bracket shell bore twice on installation on the drive side. That is the point of my early comment. BSA outboard bearing threaded BB's like Shimano are much more forgiving to loose tolerances. But for most BSA BB's on carbon fiber bikes, the BB shell is alloy and GD&T is used for thread tolerances and bore aligment. This precision can't occur on carbon press fit bikes because there is not inset cylinder like a BSA bike. The bearings themselves allow bore mismatch in degree. It is almost unheard of to have a problem with Shimano BSA outboard bearing BB's.

Yea that’s what they use to do back in the day. Shove bb in with grease

hahhahah

yes that can happen to

using copper anti seize compound can prevent that?

Because SL7 has a threaded BB (BSA68) 😉

Sqare axle bb are great , but they are improvement from time when you had to put a metal peg to hold it inn . So sometimes progress is better .

@@dodoslovensko Yeah, very true. Cartridge bbs are better in most ways, just sayin, the old stuff was user friendly. and worked well enough for long enough.

I really do like it but iI have a shop with tools at my disposal so it is no issue for me, it feels more fun to work on pressfit

Yea that was a common fix I would use on those bb30 shells for SHIMANO. I would get rid of the adapters and just run the bb30 to 24mm metal wheels mfg bb. They work amazing

@@GCPerformance18 I'm running one on my new frameset (steel angular contact bearings), this is my first quality BB.

this is true the bb30 option is mor elighter

yea I mean I enjoy it but it is my job

I hear you and eveyrone is different

Owned my tcr from new (2016). Spins perfectly and silent too. About £23000 miles on original BB so far.

My 2010 TCR BB was creaky. I had to switch to a threaded pressfit to fix it.

I have a 2008 tcr advanced 1,what tipe off bb used it??please.

They fell back for marketing, no other reason. It's also why hubs are loud even though every engineer knows that sound is produced by lost energy. But idiots want loud hubs, so hubs are made to waste watts through sound.

@@kidShibuya I cannot wait for the loud hub trend to die down.

@@kidShibuya Who care about loosing watts, when you are not pedaling? Just because hubs can make sound in this case only...

Giants use pressfit BB on their bikes and seem to get it right. I suppose if you're putting your name on the products you're making, then there's more incentives to get it right.

@@chrispalmer3096 My 2015 giant advanced XTC carbon mountain bike the bottom bracket does not even creak, I I had it taken out and cleaned and re-greased maybe sometime during the pandemic or before little clicking a little noise done no more issues my 2013 trek Madone with the BB 90 , creaky and noisy end with a ceramic speed bottom bracket I think giant has it right ☝🏻😃

I remember there's no thread-together offering for BB90, you'll need bearing retaining compound to address the creaks.

just more maintained think of it as a performance upgrade

I would LOVE for anyone to do a dimensional inspection on a few Carbon Fiber BB interfaces after a few hundred km with medium-heavy riders. I would lay down good money that the few which met spec no longer do.

So.... does it still creak on press fit aluminum frames?

Good luck beating this dead horse. Maggots like hambrini with keep telling you press is better. But show me they still function after getting muddy and sweaty for 5-10 years

If it is set up properly with a perfectly aligned shell properly prepped with Loctite green, and you reseat and reprep the shell when it creaks, it shouldn't wiggle in the frame and therefore will not cause wear. In other words, if the stars are aligned and you do it perfectly.... Pressfit was an unbelievably rotten idea.

Yes they do creak. My SL7 started creaking within a year. A well engineered press fit works better in my opinion, but only a small number of manufacturers can manage it.

You mean thread-together PressFit, people will get the wrong idea if I'm not here.

yea we did a lot of the bb30 wheels mfg

I love pressfit bb

I love pressfit if they are installed right they work really well

metal sleeve always, bonded into carbon

Yes I agree. I said that in the video. Makes it one step process removijgb

lmao

that is good for you, they probably made that whole right and nice lol, but i had a lot of stumpys back in the day that I had to remove cups and install new ones with new epoxy

greases for threaded and retaining compound for pressfit

Thanks boss.

it is a medium and it is for sale!!!

Was looking for a small if I were to pull the trigger. Thanks though, GC! Keep up the great content!!

lmfao

lmao I might get sued hahaha

If your frame allows it, BBInfinite or Hambini. No ceramic offering will help you save watts if your BB shell's angular alignment is off.

yea bsa has always been the staple of cycling community and has always done it right, but when I had my bikes with bb30 and also the guys at the shop and we took care of the bikes as we should there was never any issues with creaking, when creaking accured it was never right out of the box it was after a good amount of riding and grease drying up

the 'glue' isn't there to bond anything, it's used to 'stabilize' the interface between shell and bearings.

@@seanmccuen6970 Sounds like a lot of marketing doublespeak!

@@johns3106 fair enough, but it does often work quite satisfactorily when dumbfks can't be bothered to get their tolerances squared away.

I wish I could see a ribble

I don't think you have these issues with steel bike frames.

If the 6806 bearings need to be fitted in cups to fit in the frame, yes, it's a PF30. Width x diameter BB30: 68 x 42 mm PF30: 68 x 46 mm

yes but I have used before recombed per manufacturer and it works great and easy to remove

that frame is considered there medium, if it works for you I will sell

thats what companies are doing

damn this man went off

At least with threaded and a metal BB shell it can be faced and chased. I suspect that even the carbon fiber shells/receivers that meet spec new often don't after a few hundred km.

@@tobyvision Not really. Currently threaded shells are separated into 2 piece to reduce weight. realignment their axis in molding process is difficult, which is why manufacturers is reluctant to adopt it.

yes those work very very well

they change from different years, so one year a bike model might have a threaded and next might eb pressfit, but currently right now alot of the companies are all rocking threaded, including....... specialized, trek, pinarello, colnago, and a lot other, scott, giant are usuing pressfit

my 2022 trek fuel ex5 has press fit and sawI they cost $18 usd…..a shame.

very very nice, yea there are work arounds but people always complain when it isnt perfect all the time even though as long as you got a nice shop mechanic or a nice worker they are usually competent enough top fix the problem

Because? Pressfit is just easier and cheaper for them to manufacture, threaded is always better no matter what opinion you share sorry.

@@Motorsportsgeek youre not well versed on the topic clearly, a casual who puts faith in all the new mainstream trends without question. blind faith, ignorance is bliss. guess what threaded is press fit but the difference is they add threads... mind blown. idk what to tell you besides go to engineering school

​@@timtaylor9590 "if made properly" is a key part of this and the chances of getting it wrong are just too big for the small gains and giant headaches. Threaded is just easier to service and with the crap quality control out there, a lot fewer chances of major defects. I always buy threaded frames and am glad to see brands are going back to them after so many poorly made press-fit ones.

@@Motorsportsgeek ok so now you understand that, you can research bike brands who do make good press fit bb's. knowledge is power my friend.

@@timtaylor9590 I would bet even money that frames which meet press-ft spec often don't after a hundred km with a medium-heavy rider. I can state with certainty that even threaded steel BB shells gradually go out of round. I have measured many. But threaded doesn't care and can be faced and chased. You don't have this option with press fit.

mmhmmm

You also only need a few tools (corresponding BB tool, breaker bar, ratchet wrench, torque wrench) to install and remove such a BB instead of a hefty BB press and puller kit.

it is more reliable for sure

square tapered is goated, it is a workhorse, but it is heavy

that is a 56, I also havea 54

@@GCPerformance18 ohhhhhh…. Pull the trigger 😉

Now you're talkin' crazy!