You guys are the GOLD STANDARD for repair videos ! Thank you !! I think this is my last bike with PF though. I'm looking for threaded in future bikes !
You probably dont care but does someone know of a tool to log back into an instagram account?? I somehow lost my account password. I appreciate any assistance you can give me
@Pierce Jonah Thanks so much for your reply. I got to the site on google and Im in the hacking process atm. I see it takes quite some time so I will reply here later with my results.
@@georgefarrowgreen01 How is interference fit that requires expensive specialist tools and hammers to remove and install possibly better than a screw thread?
@@M0jibake technically, a press fit is a better way to fit a cartridge bearing than a threaded fitting. Done correctly, the bearing should actually be an interference fit on the axle and a slip-fit into the frame. In practical terms, though, everything comes down to cost - a press fit, to be made accurately, is very expensive, especially in composite. A threaded fitting, although technically inferior if cost is no object, can be designed and made at lower cost for the same degree of accuracy. In composite, though, the problem is a reliable bond between a metal BB sleeve that can carry a thread and the composite of the frame - hence press fit gaining popularity. PF is also lighter, so for the weight-weenies, it scores.
I am never going to use a tool without a tutorial from Park Tool again for the rest of my life. Having the right tool is barely half the equation. Knowing how to use it is much more than half... my brain is full ! i feel like i am in school again, at university... overload ! i am terrified of BB's but I know I have to overcome my fear and thanks to PT i will !
Stubborn PF46 bottom bracket in a used Factor 02 frame. Park BBT 30.3 and few strong whacks got 'er done. Forgot I had one until I watched this video. Top Man !!!
They did it to save money in manufacturing and (in mountain bikes at least) very quickly found out that the cost of warranty replacement frames was greater than threading.
Years late, but if you think THAT is what keeps my job going, I have a lot of stories to tell about people who come in because their lights don't work. There's a not insignificant amount of people who just didn't turn it on.
I have to admit I desperately hate the pressfit. The idea is not bad, but the quality control is terrible even at the top shelf manufacturers. I had two bike frames so far with PF and both of them started to squeak after a short time. :/
Overall this video is a great advert for threaded BBs and why most people should avoid press fit if possible. Luckily I don't ride road so I'm able to simply not buy MTBs with press fit... plenty of quality manufacturers have gone back to Threaded so you no longer have to deal with PF issues.
@@mavallarino every bike mechanic on earth can attest to the fact that press fit is absolutely not more reliable. They require more maintenance and make more noise than threaded BBs ever did. I don’t doubt that PF performs more efficiently, but for 99% of the cycling population that marginal difference is irrelevant, and they’d be better suited with soemthing that’s easier to service.
Wish the French had been using press fit in the 1970's. Then my old Gitane could be using modern cranks, instead I'm stuck with a French THREADED BB, and tapered spindle cranks. Threads not always the best.
On BMX frames it’s way easier than MTB: nearly all frames are Mid BB and you only have to press the bearings with a spacer in between in the frame. Done! And all professional cranks except Aluminium cranks have 48 Spline axle.
this is why press fit is also known as "eternal bottom bracket", since we only do this medieval procedure if it's broken, stuck, completely unusable, etc
It would be nice to see a Thompson press fit sealed square spindle bottom bracket installation. Cottered Thompson spindle bottom bracket with coaster break, give some problems of deformation... maybe the parts are't hardened at all :/ Thanks for the video!
I have a press fit BB and have had repeated issues with creaking, is this something that is common with a press fit style BB or is there another likely cause?
Pressfits can creak thats for sure. if the tolerances are loose it will almost always creak. There are bearing retaining compounds like our RC-1 that can help with that issue.
It is interesting. Mostly because the manufacturer does not know what material the bottom bracket is going to be. That and the potential for the tolerances to be too tight or too loose are high. Grease and other prep can make install much much easier for a tight interface and can take up space and silence a loose one. It also aids in install. Making it easier to install with less force and less potential for galling, rocking or other damage.
How to prepare surface in case of BB-MT800 press fit version and carbon frame without any metal shim in BB area (just carbon compound)? Originaly it was just clean, but when I did it clean also it is not completely noise free. Thanks for answer and nice video.
If you are having repeated noise issues id think that the interface is a little on the loose side and would go for the Adhesive primer and then Retaining compound. No more noise.
@@parktool It's an old Klein... I found out they have a unique setup with 35mm bearings pressed in around a square taper spindle. Similar to Gary Fisher, but no lock ring. There's a special Klein tool that fits around the spindle to remove and install it.
Phil wood still supports these older pressfits. They may be able to help you with bearings and a spindle if you need. Yes the Klein tool is special but this procedure can often be done without that tool. Reach out to Phil for more info on that.
This video makes you want to get rid of the press and back to threaded. A while back I had threaded with hollowtech. Quite frankly was super smooth. I hope I don't have to replace my bb soon on my press because it will bum me out. Oh wait! I just got rid of my press BB bike. I totally forgot.
Hi, it’s a great video. But a few questions remain unclear for me. First: is it always assumed that you always remove bottom bracket to replace it with a brand new one? Maybe you could only want to clean and reinstall the bottom bracket or replace only a damaged bearing. And that lead us to my second question: Second: don’t you never use (or have) a press tool to remove? Isn’t there any danger to damage bearings when striking it? Third: This is about different options of new bearings installation. I found a pair of bearings with only a minimal cup just to evolve the 42x30x7 bearing and hold it inside the 46mm shell so or doesn’t need an internal sleeve that I don’t really understand. Even you may wish to use a thread together bb. I mean that the only condition you must attend is your shell type and then options spread depending on your crank. Is it? Thanks in advance
my 2c: I would juice replace a PF BB with a new one, considering the relatively low cost, and the risk of damaging parts when attempting to re-use them
Yes of course, unless the bottom bracket is damaged (unlikely), it is better to just replace the bearings (giving you access to high quality bearings of your choice like NTN). And yes, using this method of removing a bearing damage it and you should't reuse it.
Crack open a beverage. Mandrels are for shaping. Arbor presses can press bearings. Arbor's can be walked through. A drift punch is for aligning bolt holes. Bearing drifts are for aligning bearings.
The BBT-90.3 driver is only for removal of bearing. The two drifts included with the tool set are used to press and install bearings but require a press such as the HHP-3.
@@parktool thank you for your answer. Correct me if I wrong, but these two drifts cannot be used for bearing installation on TREK bike with BB90 (because the bearing goes a little bit deeper into the frame than flanges can push before hitting the frame).
how well should a new bb spin? should the new bb have any noise? will it be tight cause its new then loosed up and spin more freely? i just installed a pf gxp bb and it seems tight and has light click noise, normal???
It is very unlikely the bike would be ruined from having a press fit bb. There are now "thread together" bottom brackets in most all standards that work well. Nothing here to fear.
@Oliver T it’s only a risk if you follow the questionable practise of bashing bearings out with a hammer. I added a comment about bearing removal on here 3 weeks ago. You can find a cheap suitable puller for bike BB bearings online, a few guys with machine shops at home tend to make them in small numbers (usually engineers, and like me they are alarmed at the inappropriate used in bike servicing compared to the industry standards for bearings, bolted joints, interfaces etc).
@@simost2566 I’ve never heard of any other way? Is there a name for the tool youre referring to? How does it work? screw in from the opposite side causing the bearing to pop out?
@@NeutralGenericUser bearing pullers are conventionally used for press fit bearings in various applications (car wheel bearings being one). Bike versions are simple, they are usually an alloy or Delrin cup that sits against the face of the frame with a flat insert that goes behind the bearing. It uses a bolt or threaded stud so you can wind the bearing out of the frame, essentially the reverse of pressing it in with threaded screw press. I was going to get a couple Machined up then found them cheap online so it wasn’t worth bothering (pro bearing tools I got mine from). I put the bolt into the puller from inside the bb and used an extension with an Allen bit; that way the inner race of the bearing spins as you wind the puller in which is a really easy way to evenly slide a bearing out placing minimal load on the frame.
Nice video but this puts me off completly messing about with my bike or even buying a new one. There was a time when everything was compatible with everything.
Just buy a bike with a threaded bottom bracket, been working fine for decades and it's easy to install and remove and no annoying creaks unless it's goosed.
It’s interesting that Trek seems to be going back to threaded bottom brackets on their latest bikes. Removal tool, press tool, different sized drifts, retaining adhesive, primer adhesive, non-reuseable bearings after removal. Just give me an old school threaded Shimano please.
Thanks for ennmurating all these idiotic BB types. Any future bike purchase will be dependant on the type of BB to AVOID - i.e. all of them in this video.
That's how I feel about presta valves. Especially when trying to get a tubeless tire seated with the presta airflow restrictor in near-full hindrance mode.
I will NEVER buy another bike with a press fit BB. This is asinine foolishness! $500 worth of tools to replace a $10 BB of horrible quality compared to a standard SKF bearing. What was wrong with threaded?! Why all this unnecessary complication?! Oh, carbon fiber frames, th gift from the gods. What a bunch of crap!
My friend has the scott spark 900 sl carbon 2013 model which was 9000€, his frame with press fit got enlarged and it squeaks like hell sometimes. Now i know that press fit frames are not meant to last, what a bogus and stupid technology
The bottom bracket hole could be repaired and brought back in tolerance. For the price of the bike, prob worth it depending on its condition. Honestly its easier to repair a worn out press fit than a worn out threaded!
Press fit bearings have been used to other industries for years and operated reliably, even in cars where they can be cost sensitive. The reason they have been problematic in bike frames is poor quality control of the frames (profit margins required by all the vulture capitalist holdings companies that own most of the bike manufacturers these days). They are also designed and serviced by people that’s aren’t competent enough to understand the basic tolerance requirements. If you measure a good quality bearing (NTN, SKF, NSK etc.) you’ll find it’s held to a strict specification and the usual reason for failure is improper alignment or retention resulting from the frame into which it’s installed (or contamination when someone jet washed the bearing seals).
@@simost2566 You've just explained why press fit is not a good solution for the bicycle market. So it is "junk" (for the bicycle world, where the economics are different than economics of the automobile world).
Press fit bearings are the go to standard for any applications. The reason they have been an issue in bikes is that manufacturers don’t understand or don’t control the tolerances to the same specification as the bearing manufacturers. Press fit has been used everywhere for decades, it’s only when the bike industry got hold of it with it’s fists of ham and fingers of butter that it gained a notorious reputation. Threaded BB still has the actual bearing pressed into the cup, the difference being the cup has likely been manufactured to the correct bore diameter and tolerance assuming you buy a good quality part.
@@iwontreplybacklol7481 Yes dude I get it. I mean it requires a special tool after all right. With threaded BB you don't need that special tool but just a wrench, and who presses their BBs every day? So it's not that worth buying a special tool for press-fit BB.
@@steamedpiggy a tool to press out and press in a bottom bracket is like $50 nowadays. Threaded bb tools are in the $35 range. Not a make it or break thing to me. in the long run, press fit will outlast a threaded bb. Once the frame on a threaded starts to deform due to riding stresses, it will be nearly impossible to stop the creaking. Whereas in a press fit, one can use retaining compounds that harden and fill any gaps caused by the wear and tear of time and riding. Press fit BB ftw for me.
Do not use a rubber mallet when banging out a pressfit BB. use a regular hammer as shown. And yeah, I suspect a second person would be super helpful. I spent an eternity removing a BB doing it wrong. Very frustrating.
Imagine a BB standard so laughable that to remove said BB you need to beat on the BB cup with a driving device and a hammer. Gotta believe the frame just loves that. And FYI, in this vid the PT guy was knocking out pressfit BB cups that had NOT been effectively glued into the BB shell with Loctite, which is the way most bike shops have to install these jokes due to the laughably poor frame tolerances. Go watch someone knock out PF BB cups that have actually been glued in with Loctite, and imagine that’s your multi thousand dollar CF frame being beaten on. LOL
Most common BB are NOT supposed to be glued nor greased before the fit. If adhesive has been used you need to pre-heat to 60°C or whatever temp indicated in the notice.
You got lucky getting a correct tolerance frame for PF. Most of them are sadly out of tolerance of what is needed for a properly functioning PF BB. Even a blind mouse finds a piece of cheese on occasion. 😀
It looks like the bikes are cabon fibre frames. Is it ok to use such force to remove pf30 cups? Is there and chance of damaging the frame using your method?
Great and comprehensive video - thanks! I note however that Shimano does NOT include the application of any grease/ adhesive to a press fit bottom bracket. I am not sure what to do. My approach is to follow the manufacturer recommendations, in general. Comments anyone?
Keep in mind the press bottom bracket is only half the system. The frame shell is the other half, so the recommendation of the bike builder must also be considered, and they do not always match. Our recommendations are based on our experience, bike manufacturer recommendations, and of course component manufacturer's recommendations.
You guys are the GOLD STANDARD for repair videos ! Thank you !! I think this is my last bike with PF though. I'm looking for threaded in future bikes !
You guys are outstanding bike mechanics. You deliver your knowledge without the air of superiority.
Clueless you are.
You probably dont care but does someone know of a tool to log back into an instagram account??
I somehow lost my account password. I appreciate any assistance you can give me
@Pierce Jonah Thanks so much for your reply. I got to the site on google and Im in the hacking process atm.
I see it takes quite some time so I will reply here later with my results.
@Pierce Jonah it did the trick and I now got access to my account again. I'm so happy!
Thank you so much you saved my ass !
@King Logan no problem :)
One of the best and most informative videos to highlight what an absolutely horrendous idea press-fit bottom brackets are.
Pressfit is actually a far better system, the problem is with bike manufacturers with crap tolerances
@@georgefarrowgreen01 How is interference fit that requires expensive specialist tools and hammers to remove and install possibly better than a screw thread?
@@M0jibake technically, a press fit is a better way to fit a cartridge bearing than a threaded fitting.
Done correctly, the bearing should actually be an interference fit on the axle and a slip-fit into the frame.
In practical terms, though, everything comes down to cost - a press fit, to be made accurately, is very expensive, especially in composite. A threaded fitting, although technically inferior if cost is no object, can be designed and made at lower cost for the same degree of accuracy.
In composite, though, the problem is a reliable bond between a metal BB sleeve that can carry a thread and the composite of the frame - hence press fit gaining popularity. PF is also lighter, so for the weight-weenies, it scores.
I am never going to use a tool without a tutorial from Park Tool again for the rest of my life. Having the right tool is barely half the equation. Knowing how to use it is much more than half... my brain is full ! i feel like i am in school again, at university... overload ! i am terrified of BB's but I know I have to overcome my fear and thanks to PT i will !
This video is really helpful. I think the extreme watch tan makes it more informative.
The bontempi organ porn music also added to the video.
Stubborn PF46 bottom bracket in a used Factor 02 frame. Park BBT 30.3 and few strong whacks got 'er done. Forgot I had one until I watched this video. Top Man !!!
I hate the bike industry for pushing pressfit BB for so long.
I hate that they went cheap with the manufacturing to destroy the reputation of a technically superior BB standard.
It's like they made pressfit BBs as a way to future proof all bike mechanic's jobs
I was thinking the same.
Roughly 60s into this video I had weighed up the value of my new carbon frame vs the few bucks to pay a pro
They did it to save money in manufacturing and (in mountain bikes at least) very quickly found out that the cost of warranty replacement frames was greater than threading.
Years late, but if you think THAT is what keeps my job going, I have a lot of stories to tell about people who come in because their lights don't work. There's a not insignificant amount of people who just didn't turn it on.
Thanks for your very clear guidance, It was a great help in fitting a PF BB with no dramas.
7:50 video narration says “against back of nondrive side bearings” but shows putting the tool against the drive side bearings
I have to admit I desperately hate the pressfit. The idea is not bad, but the quality control is terrible even at the top shelf manufacturers. I had two bike frames so far with PF and both of them started to squeak after a short time. :/
Overall this video is a great advert for threaded BBs and why most people should avoid press fit if possible.
Luckily I don't ride road so I'm able to simply not buy MTBs with press fit... plenty of quality manufacturers have gone back to Threaded so you no longer have to deal with PF issues.
For performance and reliability, PF is superior and more “indifferent” towards irregularities with frame. There is a lot of data on this.
@@mavallarino every bike mechanic on earth can attest to the fact that press fit is absolutely not more reliable. They require more maintenance and make more noise than threaded BBs ever did.
I don’t doubt that PF performs more efficiently, but for 99% of the cycling population that marginal difference is irrelevant, and they’d be better suited with soemthing that’s easier to service.
If you’re not into carbon fibre, plenty of frames use threaded.
Wish the French had been using press fit in the 1970's. Then my old Gitane could be using modern cranks, instead I'm stuck with a French THREADED BB, and tapered spindle cranks. Threads not always the best.
Fantastic and highly educational institutions. Thanks 👌👌👌
On BMX frames it’s way easier than MTB: nearly all frames are Mid BB and you only have to press the bearings with a spacer in between in the frame. Done! And all professional cranks except Aluminium cranks have 48 Spline axle.
Yes, except race bmx'es that come with bb86 🙄
Brilliant video as usual
I love pressfit ❤
Sooo complicated. And dumb brutal, the hammering.
It had to take a lot of sick minds to invent this standard that everybody hates.
Excellent video to sell expensive tools which you can use for a while until bike industry invents new standards ...
If you need grease for noise, on the bottom bracket, you need buy parts with better tolerances
this is why press fit is also known as "eternal bottom bracket", since we only do this medieval procedure if it's broken, stuck, completely unusable, etc
It would be nice to see a Thompson press fit sealed square spindle bottom bracket installation. Cottered Thompson spindle bottom bracket with coaster break, give some problems of deformation... maybe the parts are't hardened at all :/
Thanks for the video!
What up, Whistlin' Diesel!
great help.
I have a press fit BB and have had repeated issues with creaking, is this something that is common with a press fit style BB or is there another likely cause?
Pressfits can creak thats for sure. if the tolerances are loose it will almost always creak. There are bearing retaining compounds like our RC-1 that can help with that issue.
What are your thoughts on manufacturers recommending a dry press fit?
It is interesting. Mostly because the manufacturer does not know what material the bottom bracket is going to be. That and the potential for the tolerances to be too tight or too loose are high. Grease and other prep can make install much much easier for a tight interface and can take up space and silence a loose one. It also aids in install. Making it easier to install with less force and less potential for galling, rocking or other damage.
@@parktool do you recommend putting a grease against carbon BB shell?
8:12 I have same problem, but when i hit the tube in bb shell the tube is damaged..what should i do to remove t bb shell?
Very good video.
at 4:07, you can get it through, though.
For the BB90 for trek do you recommend any grease to install the bearings or should it be dry?
How to prepare surface in case of BB-MT800 press fit version and carbon frame without any metal shim in BB area (just carbon compound)? Originaly it was just clean, but when I did it clean also it is not completely noise free. Thanks for answer and nice video.
If you are having repeated noise issues id think that the interface is a little on the loose side and would go for the Adhesive primer and then Retaining compound. No more noise.
How do you remove a press fit that has a square taper spindle in it?
This is not common to see. What bike are you dealing with?
@@parktool It's an old Klein... I found out they have a unique setup with 35mm bearings pressed in around a square taper spindle. Similar to Gary Fisher, but no lock ring. There's a special Klein tool that fits around the spindle to remove and install it.
Phil wood still supports these older pressfits. They may be able to help you with bearings and a spindle if you need. Yes the Klein tool is special but this procedure can often be done without that tool. Reach out to Phil for more info on that.
This video makes you want to get rid of the press and back to threaded. A while back I had threaded with hollowtech. Quite frankly was super smooth. I hope I don't have to replace my bb soon on my press because it will bum me out. Oh wait! I just got rid of my press BB bike. I totally forgot.
plz name tools to remove and install :
SHIMANO BB-MT800-PA XT PRESS-FIT BOTTOM BRACKET
BB-Type: Press Fit (41x24mm)
Press-Fit BB shell width: 89.5/92mm
Shell diameter: 41mm
Installation by a home mechanic, use the HHP-3. Press one side at a time. For a shop, we recommend the BBP-1.2.
Removal use the BBT-90.3.
Hi, it’s a great video. But a few questions remain unclear for me.
First: is it always assumed that you always remove bottom bracket to replace it with a brand new one?
Maybe you could only want to clean and reinstall the bottom bracket or replace only a damaged bearing.
And that lead us to my second question:
Second: don’t you never use (or have) a press tool to remove? Isn’t there any danger to damage bearings when striking it?
Third: This is about different options of new bearings installation. I found a pair of bearings with only a minimal cup just to evolve the 42x30x7 bearing and hold it inside the 46mm shell so or doesn’t need an internal sleeve that I don’t really understand.
Even you may wish to use a thread together bb. I mean that the only condition you must attend is your shell type and then options spread depending on your crank. Is it?
Thanks in advance
my 2c: I would juice replace a PF BB with a new one, considering the relatively low cost, and the risk of damaging parts when attempting to re-use them
Yes of course, unless the bottom bracket is damaged (unlikely), it is better to just replace the bearings (giving you access to high quality bearings of your choice like NTN).
And yes, using this method of removing a bearing damage it and you should't reuse it.
are those track marks at 4:47
Whoever first came up with pressfit, deserves to change them forever in hell.
BTW. The adapters for a BB press are properly called 'mandrels', or maybe 'arbors'. A 'drift' is the 'lump of metal' tool you used earlier.
Crack open a beverage. Mandrels are for shaping. Arbor presses can press bearings. Arbor's can be walked through. A drift punch is for aligning bolt holes. Bearing drifts are for aligning bearings.
Ratioed, LOL
Can the flanges, included in BBT-90.3 tool, be used to install bearings on BB90?
The BBT-90.3 driver is only for removal of bearing. The two drifts included with the tool set are used to press and install bearings but require a press such as the HHP-3.
@@parktool thank you for your answer. Correct me if I wrong, but these two drifts cannot be used for bearing installation on TREK bike with BB90 (because the bearing goes a little bit deeper into the frame than flanges can push before hitting the frame).
I see.. another thing to avoid when buying bicycle.
на 4.50 мин уже нет центровки При ударе пластиковая направляющая не работает т к она выскочила из паза рамы - это перекос при выпресовке подшипника
Or you can just make sure the bike you are buying has a threaded or thread together BB. You are welcome.
Good luck with that.
Tnx❤
how well should a new bb spin? should the new bb have any noise? will it be tight cause its new then loosed up and spin more freely? i just installed a pf gxp bb and it seems tight and has light click noise, normal???
When the obvious answer is that something is wrong, then something is wrong. Troubleshooting 101. :-)
How much risk is there if I buy a press-fit bottom bracket bike that the frame gets ruined? Should I only consider threaded BB bike?
It is very unlikely the bike would be ruined from having a press fit bb. There are now "thread together" bottom brackets in most all standards that work well. Nothing here to fear.
@@parktool Thank you for your tips !
@Oliver T it’s only a risk if you follow the questionable practise of bashing bearings out with a hammer. I added a comment about bearing removal on here 3 weeks ago. You can find a cheap suitable puller for bike BB bearings online, a few guys with machine shops at home tend to make them in small numbers (usually engineers, and like me they are alarmed at the inappropriate used in bike servicing compared to the industry standards for bearings, bolted joints, interfaces etc).
@@simost2566 I’ve never heard of any other way? Is there a name for the tool youre referring to? How does it work? screw in from the opposite side causing the bearing to pop out?
@@NeutralGenericUser bearing pullers are conventionally used for press fit bearings in various applications (car wheel bearings being one).
Bike versions are simple, they are usually an alloy or Delrin cup that sits against the face of the frame with a flat insert that goes behind the bearing. It uses a bolt or threaded stud so you can wind the bearing out of the frame, essentially the reverse of pressing it in with threaded screw press.
I was going to get a couple
Machined up then found them cheap online so it wasn’t worth bothering (pro bearing tools I got mine from).
I put the bolt into the puller from inside the bb and used an extension with an Allen bit; that way the inner race of the bearing spins as you wind the puller in which is a really easy way to evenly slide a bearing out placing minimal load on the frame.
What about 19mm ID - BB-AL 86 ?? What tool to use for removal BB 86 , which is 19mm ?
The best tool for that job is the BBP-1.2. It has the proper drifts for a 19mm ID and both 37 and 42mm OD's.
His hair up against the white backdrop makes it look like someone using a fake background in a zoom meeting
Much prefer BSA BB
Hammering out a BB on a carbon or aluminum bike...what could go wrong? Go threaded or go home.
Lol, do you know the forces imposed on a frame when riding. Its less than removing a bottom bracket thats for sure.
13:18 - BB90 explanation
Nice video but this puts me off completly messing about with my bike or even buying a new one. There was a time when everything was compatible with everything.
Dang you kids with your newfangled whizz bang contraptions! *Shakes fist in air*
Thanks Geico caveman.
Great music choice! Where's it from? Either a 70's after school special or a 70's porno xD
please do an italian channel
All this BB 30 pressfit 30 standards and almost 99 percent of all serious riders run Shimano cranks with a 24 mm spindle.
CALVIN OR BUST!!!!!!
They should have gotten rid of the press fit bottom brackets a long time ago. Too many problems
You are not telling viewers how to remove bb that is hard to remove. The bb notches for the tool are too shallow to get a good grip
😁😊
Hammering, stone age… why not pressing out?
Check out the BBP-AOS
Wow, the idea of slamming my bike with a hammer just seems wrong
That background tho.. green screen
Quit watching because of ads 😡
What an unnecessary ,tutorial,,,, well before your bottom bkt bearings become unserviceable , they will fall out all by themselves
Just buy a bike with a threaded bottom bracket, been working fine for decades and it's easy to install and remove and no annoying creaks unless it's goosed.
It’s interesting that Trek seems to be going back to threaded bottom brackets on their latest bikes. Removal tool, press tool, different sized drifts, retaining adhesive, primer adhesive, non-reuseable bearings after removal. Just give me an old school threaded Shimano please.
Amen to that
Press-fit the stupidest system ever. Thanks for video.
Thanks for ennmurating all these idiotic BB types. Any future bike purchase will be dependant on the type of BB to AVOID - i.e. all of them in this video.
Lol if you think threaded BB have no issues to remove/install.
i hate pres fit bottom bracket ..sucks..
That's how I feel about presta valves. Especially when trying to get a tubeless tire seated with the presta airflow restrictor in near-full hindrance mode.
Hang a towel off the top of the bike so everything doesn't have to go flying across the shop.
That is later covered in the video.
I use pipe cleaners (chenille stems) finger twisted around the bottom bracket to keep things from flying across the shop. It works amazingly well
Press Fit - the worst and stupidest thing anyone has ever invented for a bike.
I will NEVER buy another bike with a press fit BB. This is asinine foolishness! $500 worth of tools to replace a $10 BB of horrible quality compared to a standard SKF bearing. What was wrong with threaded?! Why all this unnecessary complication?! Oh, carbon fiber frames, th gift from the gods. What a bunch of crap!
What a pain!
Those video are so well made. Thanks!
My friend has the scott spark 900 sl carbon 2013 model which was 9000€, his frame with press fit got enlarged and it squeaks like hell sometimes. Now i know that press fit frames are not meant to last, what a bogus and stupid technology
The bottom bracket hole could be repaired and brought back in tolerance. For the price of the bike, prob worth it depending on its condition. Honestly its easier to repair a worn out press fit than a worn out threaded!
I wish this junk would disappear.
Press fit bearings have been used to other industries for years and operated reliably, even in cars where they can be cost sensitive.
The reason they have been problematic in bike frames is poor quality control of the frames (profit margins required by all the vulture capitalist holdings companies that own most of the bike manufacturers these days).
They are also designed and serviced by people that’s aren’t competent enough to understand the basic tolerance requirements.
If you measure a good quality bearing (NTN, SKF, NSK etc.) you’ll find it’s held to a strict specification and the usual reason for failure is improper alignment or retention resulting from the frame into which it’s installed (or contamination when someone jet washed the bearing seals).
@@simost2566 You've just explained why press fit is not a good solution for the bicycle market. So it is "junk" (for the bicycle world, where the economics are different than economics of the automobile world).
pretty sure my new ebike has a threaded bb. thank god!!! im learning about all bike mechanics but i wouldn't want to own one of these types
Press fit bearings are the go to standard for any applications. The reason they have been an issue in bikes is that manufacturers don’t understand or don’t control the tolerances to the same specification as the bearing manufacturers.
Press fit has been used everywhere for decades, it’s only when the bike industry got hold of it with it’s fists of ham and fingers of butter that it gained a notorious reputation.
Threaded BB still has the actual bearing pressed into the cup, the difference being the cup has likely been manufactured to the correct bore diameter and tolerance assuming you buy a good quality part.
It's just a pain in the arse to maintain a press fit bb. It's a shame that so many manufactures don't produce threaded bb frames
If you have the right tools its not. Takes my LBS 20 mins to do it start to finish. Comments are overthinking this
@@iwontreplybacklol7481 Yes dude I get it. I mean it requires a special tool after all right. With threaded BB you don't need that special tool but just a wrench, and who presses their BBs every day? So it's not that worth buying a special tool for press-fit BB.
@@steamedpiggy a tool to press out and press in a bottom bracket is like $50 nowadays. Threaded bb tools are in the $35 range. Not a make it or break thing to me. in the long run, press fit will outlast a threaded bb. Once the frame on a threaded starts to deform due to riding stresses, it will be nearly impossible to stop the creaking. Whereas in a press fit, one can use retaining compounds that harden and fill any gaps caused by the wear and tear of time and riding. Press fit BB ftw for me.
Do not use a rubber mallet when banging out a pressfit BB. use a regular hammer as shown. And yeah, I suspect a second person would be super helpful. I spent an eternity removing a BB doing it wrong. Very frustrating.
Excelente material!!!!. Una pena que no tenga subtitulos para los latinos que no hablamos inglés. Saludos desde Chile.
That watch tan is beautiful
Excellent video! Thank you. Couldn't have done it without you.
Yeets the bearing through the room. „U may not reuse that“ 😂
What’s the worse option on a bike. Press fit over threaded ,.. or boost 141 qr over 12x148.
MORAL OF THE STORY! STAY WITH BSA! xD
This would be better if frame manufacturers would bother making their shells any good.
Awesome videos. Really helpful 😃😃😃.
What about remove / install SM-BB72-41B ?
Thanks, exceptional video 👍😊
Imagine a BB standard so laughable that to remove said BB you need to beat on the BB cup with a driving device and a hammer. Gotta believe the frame just loves that. And FYI, in this vid the PT guy was knocking out pressfit BB cups that had NOT been effectively glued into the BB shell with Loctite, which is the way most bike shops have to install these jokes due to the laughably poor frame tolerances.
Go watch someone knock out PF BB cups that have actually been glued in with Loctite, and imagine that’s your multi thousand dollar CF frame being beaten on. LOL
Most common BB are NOT supposed to be glued nor greased before the fit.
If adhesive has been used you need to pre-heat to 60°C or whatever temp indicated in the notice.
The answers to the questions no one never asked! Why such deviant designs? Its not just one or two odd ones but many. Ridiculous...
Not all innovations are winners. But, innovation is very much needed.
@parktool is there no facing of the shells recommended?
Great vid! Thanks park tool!
Maybe you have problems with press fit but I don't. Easy to reinstal without any special tools!I use 1$ screw and few washers works like a charm:)
You got lucky getting a correct tolerance frame for PF. Most of them are sadly out of tolerance of what is needed for a properly functioning PF BB. Even a blind mouse finds a piece of cheese on occasion. 😀
I wonder how many times this could be done before frame wears out
As opposed to what, the forces it takes from a human standing on it and pedaling, twisting, hitting bumps ect.😂
My bike is 6 years old and I never changed that thing. Is it bad?
If the bearing spin nice and smooth, all is good. That simple.
@@parktool alright mate :)
It looks like the bikes are cabon fibre frames. Is it ok to use such force to remove pf30 cups?
Is there and chance of damaging the frame using your method?
so , it s working but no fit because the punch no good for fiber , park tool is very quality but need improve your procidment about this work
Excellent how to Provide the working Progress Good job💯💝💝💝💟💟💟✨✨✨👌👍
Great and comprehensive video - thanks!
I note however that Shimano does NOT include the application of any grease/ adhesive to a press fit bottom bracket. I am not sure what to do. My approach is to follow the manufacturer recommendations, in general.
Comments anyone?
Keep in mind the press bottom bracket is only half the system. The frame shell is the other half, so the recommendation of the bike builder must also be considered, and they do not always match. Our recommendations are based on our experience, bike manufacturer recommendations, and of course component manufacturer's recommendations.
@@parktool thanks for your comments!
thanks for video,
The removal rod for 24mm axels is very... erotic.