THREADED vs. PRESSFIT BB (WHICH IS A BETTER SYSTEM?)
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Just get a Hambini BB. Engineered Like No other.... Engineered by a 5 year old. On a serious note, all of these bottom brackets ARE pressfit, the bearings press into a cup, adding the threads actually adds an unwanted interface. The issue is the bike makers can't seen to make a hole that is round and of the correct size.
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
Just when I was hoping that we could all agree that pressfit was a colossal disaster, I see this. I don't need to list all the issues with the design as we all know them. I mitigated them by preparing the shell with Loctite green and by buying a good BB whose two sides thread into each other. That mostly worked, but about once a year, I get a little creak, and out comes the Loctite. The old threaded BB in my steel Colnago never complains. How many of us really need that extra stiffness? I'm not Mark Cavendish or even close. I want reliability.
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
Interesting video. As a shop mechanic of 25 years +, the press-fit system was largely a disaster from it's incarnation
only because of crappy mechanics
The content I have been looking for for a while! 👍🏻
T47 is the way to go... The press fit issue has been a nightmare. The carbon is rarely round. I will never use a press fit again after m SL4 experience.
At the end of the day, it all comes down to how well made the BB is. Trek and Cannondale didn't do a good job for years with BB90 and BB30a, which led to the terrible reputation of press fit. Specialized did a better job with OSBB/BB30, but still had the occassional bike that wasn't made well. Personally, I've never had an issue with press fit. The BB30 bike I own is from a small custom manufacturer and has an expensive optional CNC machined titanium BB shell, so I'm not surprised it's so good. BB86 seems to be known as the most reliable press fit standard, which is probably why manufacturers like Canyon are sticking with it. It's worth noting that both of my press fit BBs run much more smoothy than the threaded BBs I own on four other bikes.
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..
The greatest trick the devil ever pulled was convincing the world that a properly dimensioned round hole wasn't possible to make.
I replaced my pressfit BB with Wheels MFG BB86/92 on my TCR and it's almost a year now with no issues. My Canyon CF SL7 uses Token Ninja BB no issues at all.
The press fit is an example of fixing something that is not a problem.
Great vid man, clear! 👍
Glad it helped!
The italian threaded on my Dogma is great. Easy peasy to service and never makes a noise at all
I think the explanations say it all. Threaded is easy and reliable. Press fit requires an expert well experienced mechanic to maintain. So, if you are racing on a team, go press fit. If you are doing your own maintenance, threaded is the way to go. I know from experience threaded is crazy easy to replace and last longer that old school cartridge BBs.
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.
I like the cups that stick out
Threaded... never had a problem nor any noises!
SHIMANO XTR BB are the best on the face of this planet! I’ve been using one for almost 10 years with no issues whatsoever. They are bulletproof!
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
I think and what I heard as far as the return to threaded was a big push from the pro teams, some of this demand was quality control related i.e creaking and premature ware from misalignment, but also on frequently serviced bikes, the ability to easily remove the bottom bracket with no chance of damage to the bearings is a big thing, especially with the horrible internal routing for the sake of a few grams, and some frames sometimes require the removal of the bottom bracket to run new cables. When it comes to internal routing, road bikes could learn a few things from MTB's.
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
Well made press fit works great. I have no issues on my mtb or road bike. Problem is not many manufacturers are good at it.
This is truth!!
there is twisted-fit B.B for PF frames. this would be a nice option to reduce problems about pressfit type.
Should press fit BBs be replaced on a schedule? or just replace as soon as you hear creaking?
Ive only had BB86 pressfit and never had and issues but always use single piece sleeved BB , Habini and BB Infinite.
I'm curious to know what percentage of frames come back with a bottom bracket issue due to poor tolerances? For my personal bikes, it's been about 50% I had one that I could literally turn the frame over and have one of the BB30 bearings just fall out. I really miss my custom ti frame which had a BSA BB that was 100% spot on - spun so freely and BBs lasted forever..
What happened to the frame??
About how much do you charge to build up a bike like winspace?
I will never go back to pressfit. not only to prevent creaking but also for easier and faster maintainance.
It's unfortunate there was no SL7 rimbrake variant made. BSA with direct mount rim brakes, the perfect plattform for a lightweight and easy maintainable bike with good braking performance.
SL6 had direct mount brakes but unfortunately no threaded BB shell.
I know people shit on Trek's BB90, but I have never had issues. You can't hear creaking if you just wear headphones while you ride 😉
hahhahah
If you replace the bearing on specialized SL5 when you remove the bearings do you put any lubricant on the frame shell or the outside suffice of the bearings before installation and if yes what kind? When you put lubricant on the spindle before installation again what kind do you recommend. Do you put lube on the outside side wall of bearing after installation before you put the outside spacers?
Also, what brand bearing would you recommend. The original ceramic speed are way to expensive right now I am between wheelsMNG and Kogel?
Thank you
PF BBs only exist to allow manufacturers to toss fewer frames in the bin and thereby reduce their manufacturing costs. PF allows them to have wider tolerances on the BBs - this means more frames pass their QC.
IMO, threaded BBs are superior from the end-user’s perspective.
heck no, press fit mid bearings swap the world, they literally last forever.
Those thread together pressfit is the best option for me so far. Been using it on both my pressfit frames.
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..
Pressfit is fine so long as many factors are in place. Excellent quality control / high tolerances / properly maintained. If you have those 3 things then PF is fine.
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.
Not to mention that an aluminium threaded insert in a carbon frame will likely suffer from galvanic corrosion.
yes that can happen to
using copper anti seize compound can prevent that?
I used Srams pf30 to bsa adaptor. My sworks frame seems to have good tolerances. Just used a very slight bit of grease on install. No glue or retaining compound. Working fine and quiet so far.
Yea that’s what they use to do back in the day. Shove bb in with grease
I think I have well over 50k miles on my 2014 tcr with gxp press fit. Never taken the BB apart. I'm scared it'll be ruined since I bought it used. not really sure if they glued the bearing in or something. Still working really smooth, but I noticed on really hot and humid days like 100+ degrees after about 2 hours of riding it'll start getting noisy. Usually can't tell in 90 degree temps though.
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
The new T47 interface is very promising. Can’t wait to buy yet another tool for my one bike that has it.
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.
Nothing wrong with the old three piece BBs, easy to service, easy to change the bearings, could all be done with a drift and spanner. Bike manufacturers just keep inventing new and "improved" and more expensive ways to do exactly the same job so that they can fleece mug punters.
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.
Threaded is better because it is more reliable. I could write a book on the subject as a mechanical engineer. People blame tolerances but reality is a threaded BB is 'less tolerance sensitive'.
Major bike manufacturers screwed the public for ten years before reverting back to threaded BB's. They lied about weight savings and BB stiffness and used marketing to 'upsell a press fit BB' when they were screwing the consumers with bikes that wouldn't stop creaking. There was a whole industry spawned trying to solve BB30 and PF30 press fit...companies like Praxis and Wheel Mfg. How did they accomplish this? By introducing a threaded cup interface interconnecting both cups creating thrust/axial force on the BB shell to mitigate micro creep that created creaking. This will go over the heads of most people here but engineers understand that axial/thrust loading that a threaded interface creates trumps radial forces due to reliance on interference fit tolerances. Its elementary to a graduate engineer and why threads have been inside bottom brackets for decades.
What the bike industry did to consumers who are largely non-technical is disgraceful.
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.
GC thoughts on Wheels Manufacturing BB30 to Outboard 24mm. Mix of the two, you got it inserting into the pressfit threaded together. Easy to replace and install and you get to use regular shimano cranks.
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.
For mtb I have 1 bike with bb30 and 1 with threaded. Both have performed well but I've had to change bb30 bearings twice. My Shimano bb has lasted much longer. And I dont ride in mud and clean my bike gently after almost every ride.
I use sl7 frame and c bear BB, both are goin well so far
Because SL7 has a threaded BB (BSA68) 😉
I own a diverge 2019 and in the website says that is PF30, do you know what version of Sram DUB can I replace my original bb?
So this is 2 separate things: threaded = good, and wider BB socket = good. Why do we have to choose, as you mentioned there should be a press-fit sized threaded socket in each bike, and boom, you are done for good.
Okay, but I have to understand that all these pressfits lose a lot of stiffness after, for example, 2/3 years of use by an amateur? Because if they work minimally under the influence of pressure, I should understand that after some time the joint is slightly kneaded, creating minimal play and after a number of services and knocking out these bearings there will be a problem with fitting because the muff is slightly pushed apart, I understand correctly ? I have the same S-Works Venge and it is 7 years old all the time the same contribution from the news, can it be the reason for the feeling of a drop in stiffness while pedaling and the feeling of floating the frame possible it ?
Can I fit a pressfit crank to a threaded bottom bracket?
Grant what would you suggest to remedy a creaky trek BB90 on my 2013 Madone with Ceramic Speed BB installed few years ago ? It had been serviced but creaky again. I still have the stock bottom bracket that came with the bike because it was a project one build back in 2013 with Dura ace 9000 so whatever the bottom bracket that came with it I could put that back in or buy an aftermarket threaded bottom bracket conversion I know there’s a few brands out there including wheels manufacturing , and TOKEN . 🤔🤔🤔🤔
I remember there's no thread-together offering for BB90, you'll need bearing retaining compound to address the creaks.
Well, I personally don’t buy bikes with press fit bottom brackets regardless if I really want it. Note, all bottom brackets on my bikes after 17+ years (competitive and now for fun) have never made any noise.
I hear you and eveyrone is different
I absolutely HATE press fit bbs. Cranks are very limited in selection and it's more of a hassle to repair if something goes wrong. Threaded is the way to go!
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
BB30 is much lighter. A reason why my supersix is 6kg is the SRAM groupset with SRAM red crankset in BB30. Other than that, the shimano style threaded BB is just simpler for sure.
this is true the bb30 option is mor elighter
Pressfit requires basic levels of engineering tolerances, while threaded can rely on the carrier. It doesn't speak well for design and QC of high end frames that they had to fall back to threaded BB. The only way that we will see pressfit come back is if competition starts making frames that abide by standard engineering tolerances and shames some of these big name brands into spending the money. With the current manufacture margins and people's ignorance and/or making excuses for these companies, I don't see this happening soon.
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 never have any problems on my specialized fsr stumpjumper press fit BB but instead shocks issue over that BB.
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
When i bought my venge in 2019 I had to change from press fit to threaded bb because of creeking noise.
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
Pressfit? Never again for me. Too many experiences with creaking and poor tolerances regardless of quality manufacturer. It was an answer to a question no one asked.
Threaded for mountain bikes.
Threaded for me every time.......................................Easy to replace and more secure.
External cups offer much more stiffness as the distance between the bearings is longer, and much stronger.
There is a reason even Shimano DuraAce still uses the Hollowtech II BB's and it still the best of the best.
Larger diameter cranksets and BB are marketing BS and trying to offset a poor design from the start.
The threads on the BB: are those threads cut into the carbon fiber (carbon fiber threads)? Or is there a metal sleeve / cub bonded into the BB and threads cut into that metal sleeve?
metal sleeve always, bonded into carbon
When it comes to press fit bottom bracket which is good to buy kogel or ceramic speed?
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.
My tcr BB has been silent for years. I've been told Giant press fit BBs are one of the most reliable.
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.
Does anyone know or have a list of which manufactures use threaded BB‘s on their frames?
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.
He's basically saying, press fit is a bike mechanic's dream. More work and little work around that doesn't really fix the press fit issue as it is a design flaw
just more maintained think of it as a performance upgrade
The cost to shop owners in wasted time/labour and money dealing with unhappy consumers is a huge burden to carry. The process of getting warranty replacement parts and frames is slow and the shop never gets compensated properly and the customer is without their bike. In the future I think all frames will be threaded again, eventually.
Best press fit for xc carbon race build? In orange;)
Problem with press fit isn’t the bb, it’s the bb shell on the frame rarely being the exact correct size meaning even if it’s installed properly with a retaining compound they still creak. Can’t stand them.
I love pressfit if they are installed right they work really well
Let's improve the hip joint by removing all the muscle, tendons and ligaments and just use Bluetack
lmao
On a threaded pressfit BB, would you use a retaining compound like RC-1? Or is a retaining compound not necessary with threaded BB’s?
greases for threaded and retaining compound for pressfit
Thanks boss.
Out of curiosity, what size is that blue Winspace frame in the video?
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!!
Maybe these bicycle companies could address their poor quality control
Thread💯
Bikes are so high maintenance these days and it's so annoying. From hydraulics to tubeless. I miss how simple bikes were just a decade ago. All I had to do if I wanted to ride after a long break was replace a tube if even that.
Just use a threadlock pressfit bottom bracket,best of both worlds
I love pressfit bb
So while both are good, threaded is generally a bit more reliable and easier to swap, yet usually a little heavier….that about it?
I agree with other comments using retaining compound or Apoxsee to fit a bearing into the bottom bracket is moronic
Yes hambini is best (pressfit only)if you can afford.
But when it comes to conventional I prefer treaded especially bsa30 just because the bearings are outside and large. Last long. I got some cheap aliexpress ceramic bearing bsa30 from kaktus running good full 2 years over 12 000 miles. Never had to regrease.
Using “glue” to hold any of the parts on my bike in place (particularly in a high-stress area like the BB) seems like a cheesy, half-assed way of doing things! BSA is easy to service for the home mechanic and over many,many years of riding has never given me any problems!
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.
Doesn't the plastic cup make it a PF30? I have a Litespeed C1 carbon frame that is BB30 and the metal BB tube (with grooves for the C Clips) is part of the frame (and I have had no issues with it in 10 years. My gravel bike has PF30 which is the plastic cup before you install the BB. This allows for more lax tolerances in manufacturing. They both use the same bearings. The SRAM crank on the Litespeed just goes directly to the bearing surface, the GRX Shimano crank needs spacers (adapter for the 24mm axel through the 30mm hole in the bearing).
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
So I do see people retrofitting a pressfit to thread-on BB as a solution to PF/BB30 woes.
I also haven't heard anyone say "Man I wish this BB was press-fit, these threaded BBs are terrible"
I really love my Trek Boone, but the BB90 is trash.
Do you have a winspace in stock? 56 I’ll buy right now!
that frame is considered there medium, if it works for you I will sell
If press fit has been such an issue with carbon then why don't they make the BB out of aulminium or steel?
I don't think you have these issues with steel bike frames.
THREADED is more ez to service yourself
Yes I agree. I said that in the video. Makes it one step process removijgb
Excuse me but old school is and was threaded. Press fit came along that saved costs on frame construction and they pushed the sale of press fit as being a huge weight savings. Even those who claimed not to be weight wienies then bought into them. I myself have yet to see a threaded BB that was out of round as I have seen threaded to be both out of round and misaligned.
Its spins for days that true performances says😂👍
lmfao
Epoxy really should never be needed if the frames are built to spec
yes but I have used before recombed per manufacturer and it works great and easy to remove
the table needs a princess blanket
lmao I might get sued hahaha
everyone just needs to go back to BSA and save us the headache
thats what companies are doing
When's the last time you seen a threaded bottom bracket creak? It doesn't!! The other problem with press fit is that steel bearings in a carbon bike, the carbon will wear before the steel will. How many bearing changes can you make before the carbon wears and the fit will no longer be right? In my opinion press fit is a terrible design for a carbon bike frame.
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.
Bb30 great Bb zero problems 2 bikes.
As a commuter and occasional weekender, all I want is a steel frame T47 tourer which accepts fat 700C tires.
I really don't care about saving 80 grams because I weigh 80 thousand grams, I understand threads, the tools for threaded pack much more easily than pressfit. I just want a 30mm spindle and bearings which work.
And every time I hear some pressfit nanny tell me that "T47 is pressfit anyway, threads are unnecessary, you can get that 30mm axle without the cups you just need to navigate the manufacturer minefield" I think MAYBE, the reason why the press fit of threaded cup inserts don't creak is because they're more reliable to manufacture? MAYBE this is an inherent advantage of threaded? MAYBE manufacturing consistency is actually something which matters to real people? Maybe, just MAYBE, design for use is still a valuable engineering consideration. It was when I qualified, and I'm not aware of any memo saying otherwise.
I know that's not what you're doing here, I just find it all over the place.
I want to just walk into a bike shop, buy something off the shelf, put it on my bike, and KNOW FOR CERTAIN that it will work.
Most manufacturers cannot get the tolerance, roundness, concentricity, alignment of the holes of either system right.
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.
Ribble is a good company that combine good engineering and Aerodynamic plus it is threaded.
I wish I could see a ribble
Bro Ceramic BB = Baby poop! Best BB Hambini, BB Infinite and Chris King
What size is that SL7?
that is a 56, I also havea 54
@@GCPerformance18 ohhhhhh….
Pull the trigger 😉
My opinion, press fit SUCKS!!!!!! But I did replace a press fit with the Wheels Mfg. bottom bracket and it was awesome. I highly recommend those Wheels Mfg. bottom bracket. I just can't speak enough good about them. We'll see how they hold up over time.
yes those work very very well
Threaded, end of.
damn this man went off
Pressfit BB30 is a Cannondale creation, not Specialized.
Also, the reason manufacturers have switched to threaded is because they can't get their QC shit together. If they started building frames with the BB to the proper tolerance pressfit is superior.
I used presfit BB for 7 years now. I encountered no problems such as creaking sounds or other annoying sounds emanating from pressfit BB because I used a retaining compound during the installation and not grease.
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
press fit by far the best if made properly
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.
Does this question need to be asked?
yes
Token Ninja BB is what you need! Don't get dooped into spending more money than sense on a BB!
No denying the wee fella in the orange jump suit makes great bb's but ffs they are overpriced & weigh more than most bb's out there.
Token might not use the highly praised NTN bearings but their bb's run buttery smooth & when installed correctly are creak free. Done around 8k miles on a press fit BB86 Ninja still on factory bearings in all sorts of UK weather & it still runs & spins like new. Sure it was £45 including adaptors.
Press fit = theory
Threaded = practice
mmhmmm
Same, better engineering.
Press fit is quit good for me.
Square taper. No issues for many, many years, if not decades.
square tapered is goated, it is a workhorse, but it is heavy
shoutout to hambini
Press fit only exists to simplify and therefore reduce manufacturing costs. If those costs were realized by the customer, it might or might not be worth it - but they are not. Often, quite the opposite, where PF BB's are more expensive because they are "new" (again) or .
Bottom line though - threaded BB's are the obvious end-user choice due to ease of maintenance.