Trek Madone BB90 Creaking Bottom Bracket (FIX) Case Study

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  • เผยแพร่เมื่อ 4 ธ.ค. 2024

ความคิดเห็น • 157

  • @theillegalimmigrant9314
    @theillegalimmigrant9314 6 ปีที่แล้ว +59

    That bearing vibration analysis is F ing impressive. Good job

    • @Hambini
      @Hambini  6 ปีที่แล้ว +5

      Glad you like d it!

  • @jameswilson2815
    @jameswilson2815 2 ปีที่แล้ว +1

    That's analysis of bottom brackets blew me away. I'm no tech genius but I could follow your explanation. Much more enjoyable than listening to why the world is tanking. I mean why go to college when I can just watch your videos! Thanks for the work you put in to help people like me. Mahalo and Aloha.

  • @iSOisoleucine
    @iSOisoleucine 6 ปีที่แล้ว +9

    YESS. NEW HAMBINI VIDEO. I love hearing your failure analysis and problem solving. Looking forward to getting one of your parts one day!

  • @G4ogami
    @G4ogami 6 ปีที่แล้ว +57

    O.M.F.G I knew you were good I had no idea you were so blooming amazing. Glad I asked for your assistance. Blown away

    • @Hambini
      @Hambini  6 ปีที่แล้ว +10

      It was a pleasure. Shame it took so long to upload.

    • @tomkunich9401
      @tomkunich9401 4 ปีที่แล้ว

      Having a couple of Treks this interested me. Since I am in the process of assembling them with the screwed up mail system, it appears that it will take awhile to get them on the road. Imagine a Hambini video without a single attempt at foul language. Have I slipped into another universe?

  • @grumpycyclistdubai
    @grumpycyclistdubai 6 ปีที่แล้ว +10

    Hambini, you're amazing! That sound analysis is wicked science in a good way.

    • @Hambini
      @Hambini  6 ปีที่แล้ว +2

      Thanks for the feedback

  • @Sandbag1300
    @Sandbag1300 3 ปีที่แล้ว +1

    Impressive diagnostic. My experience with this BB is that after one cycling season road grit, dirt, sand penetrates the seal between the bearing and the bearing holder and distorts the fit. Solution is to remove the bearings from the bottom bracket, clean out everything well, grease, and reassemble. The location of the crank makes it essentially a dirt, grit, sand magnet. Cleaning regularly should solve the problem of creaking and extend the service life of the bearing holder.

  • @andrejkiss
    @andrejkiss 5 ปีที่แล้ว +4

    wow what an elegant way to analyse the creak. I have a similar creak on my cannondale bb30, will attempt the same. subbed.

  • @manitoublack
    @manitoublack 6 ปีที่แล้ว +3

    Amazing Engineering solutions to problems that shouldn't exist. Glad I have a traditional BSA BB (on all my fleet.) Also the bearing analysis (size distribution and stiffness) is great. While it would be great to be able to get a bag of bearings do a size analysis and return the undersized. For me knowing the NSK (NTN difficult to source in Australia) has a very tight size distribution (and excellent stiffness in general) is vindication as to why I use them in all my sealed bearing wheel hubs.
    Keep up the great work

  • @STEVE151079
    @STEVE151079 6 ปีที่แล้ว +12

    Brilliant, utterly, utterly brilliant!

    • @Hambini
      @Hambini  6 ปีที่แล้ว +1

      Thanks very much!

  • @davidgeorge9233
    @davidgeorge9233 6 ปีที่แล้ว +8

    Absolutely incredible, just love the tech info and expertise here. My own bike is running smooth as silk since putting NTN bearings in from your good self, I recently returned from a camping trip to Iceland and am contemplating cycling round the country one day, led me to think how I would cope if the B.B. started to creak! Would have to be a Hambini system to avoid issues I reckon 👍

    • @Hambini
      @Hambini  6 ปีที่แล้ว +1

      Thanks for the feedback, I always aim to please!

  • @Bikes-guitars
    @Bikes-guitars 4 ปีที่แล้ว +1

    Thank you for this video, you have inadvertently solved the problem I have been having with Campagnolo freehub bearings prematurely failing, the bearings are so tightly pressed in they are being deformed inside the freehub body and of course fail in no time, I have replaced them with Enduro bearings that whilst they we’re not a slip fit, they barely took any pressure to press in, problem solved 👍 thank you again, without this information on bearing size it would not have been possible to solve the problem! 👍

  • @plantfuelled8912
    @plantfuelled8912 6 ปีที่แล้ว +7

    More Hambini! Hooray! :-)

  • @PeakTorque
    @PeakTorque 6 ปีที่แล้ว +8

    Great video loved the frequency analysis. Very interesting to see your approach to GXP at 17:40. You may have seen I tried the same approach by freeing the NDS z translation for a GXP crank by stepping up the 22mm to 24mm with a collar and using a normal pf86 BB. I did not like it though because there are still some issues with this design idea (if im not wrong), what are your thoughts on below...?
    1. The NDS shoulder sets the chainline. You'll know from Shimano tech docs how anal they are about setting chainline to 100 microns. Even the latest Dura Ace and Ulteg has been shifted by 100 microns. So without locating the shoulder as the datum, how do you set the chainline and q factor relative to the centre line of the frame?
    2. And rather more importantly, the NDS shoulder sets the tightening torque of NDS crank bolt. Yes it's a tapered spline but the torque only really starts to build when the crank is butted up on the innner race of NDS. Without the abutment, the soft alu female spline in the crank can over-introduce and completely lunch istelf. Removal and reassembly can then really shag it. Also without using the abutment, what is stopping the bearings being over axially loaded?
    These are the reasons why i shelved the idea. Would be great if you could let me know your thoughts on why you're going with it. If not on here via PM or something. Cheers!

    • @Hambini
      @Hambini  6 ปีที่แล้ว +1

      Hi, I have sent you a PM. Thanks Hambini

    • @PeakTorque
      @PeakTorque 6 ปีที่แล้ว

      Hi Hambini, YT have deleted the pm feature since 9 July and I missed your message. Could you send it to cycgnr a t h0t mail dot commmm? Thanks!

  • @cliffcox7643
    @cliffcox7643 4 ปีที่แล้ว

    IF any company in the bike business hired Hambini, their credibility and sales would immediately skyrocket. Bike guys, esp racers are technical people who want a mechanical advantage in one way or another.

  • @GNX157
    @GNX157 6 ปีที่แล้ว +2

    Hambini, your client friend is not out of the woods yet. The longstanding problem with the BB90 is failure of the non drive side bearing due to moisture ingress. This is more an issue with how the frame is shaped in the immediate area around the bearing opening. Typically, water or sweat from rain or water bottles or even the rider, will run down the downtube and seat tube and get funneled down to the non drive side bearing opening and it will slip by the orange dust seal and land right outside the seal of the bearing. Eventually degrading the grease and causing failure due to rust or lack of lube. The drive side doesn't have this problem just due to how the carbon is shaped there. The water will usually run down and around the bearing opening and fall to the ground.

    • @choddo
      @choddo 5 ปีที่แล้ว

      Doesn't that depend on the particular frame design?

  • @richardcarr6493
    @richardcarr6493 5 ปีที่แล้ว +1

    TREK AND EVERY OTHER PRESSFIT BBs WINGNUTS SHOULD HAVE YOU DESIGN THEIR BBs then they would NEVER creek or fail ever !!! Keep up the great videos !!

    • @Hambini
      @Hambini  5 ปีที่แล้ว

      Thankyou!

    • @davidbray8652
      @davidbray8652 4 ปีที่แล้ว

      Yeah but where would the profit from engineering obsolescence be in that 🙃. I hate modern engineering 🤬

  • @TIMSANDYSURF
    @TIMSANDYSURF 4 ปีที่แล้ว

    I’m refurbishing a trek madone with BB90 and I was pleased to learn you have a kit on your website. 😁
    Then gutted to find they are out of stock. 😟 Please get some more in soon 👍🏻

    • @Hambini
      @Hambini  4 ปีที่แล้ว

      Sorry!

    • @TIMSANDYSURF
      @TIMSANDYSURF 4 ปีที่แล้ว

      Hambini . It’s ok. My last road bike was a Peugeot back in 1976, so I didn’t know what I was letting myself in for when I brought a second hand Trek. I took out the crank and the bearings just fell out 😟. It’s a bit noisy but I’ll get by until you’ve got some more. Thanks for the reply 👍🏻

  • @mortimersnerd9991
    @mortimersnerd9991 4 ปีที่แล้ว

    Good video. Affirms what I observed. A BEER CAN will work - in case you don’t have a machine shop. In my case, the bearing shoulder was causing creek. You had mentioned a sleeve as a solution. Since I didn’t think I could buy such a thing, I made one. I cut a ribbon of aluminum from a beer can with a razor and straight edge that was the width of the bearing. Given some “research” I found a typical aluminum can wall is 0.102mm. Since thinner is better, you can work the metal with some kind of roller, like an old bearing, and make it thinner. A single ring fit very snugly in my case, but I suppose you could continue spiraling around 1 and a half times to fit bigger gaps. Yes, I can see how that would cause misalignment. My geometry suggests a 0.102mm deflection over 90 mm is probably within tolerance of “Trek” square. Clearly Trek needs to use a metal shoulder here. IMO, it was not worth shedding the grams. I have a 2010 Modone 5.1 with SRAM and ride at least 3000 miles per year. A shop replaced the bearings the first time and it didn’t stop creaking. I got another set of bearings and put my sleeve in. So far so good. BTW, it was the non-drive side that failed. I would be interested to know if this is a hokey solution to preserve a 10 year old bike or if it is close to how a bike engineer would solve this.

  • @GNX157
    @GNX157 6 ปีที่แล้ว

    Hambini, for the loose fit, what some guys are having success with is taking the bearing out and putting a round or two of thread sealant tape on the outside of the bearing, and pushing it into the netmolding. This takes up the clearance needed in many cases to stop any movement. If that doesn't work then they resort to the oversize bearing.

    • @Hambini
      @Hambini  6 ปีที่แล้ว +1

      That sort of a repair is what I would call a bit of a bodge. The oversized bearing would be a recognized method of repair.
      However parking all of this aside, They shouldn't be selling a bike with tolerances like that!

  • @johnbailey520
    @johnbailey520 6 ปีที่แล้ว +1

    Always blowing minds...

    • @Hambini
      @Hambini  6 ปีที่แล้ว +1

      Thanks very much!

  • @reginaldscot165
    @reginaldscot165 6 ปีที่แล้ว +3

    Another excellent video.

    • @Hambini
      @Hambini  6 ปีที่แล้ว +1

      Thankyou very much.!

  • @markhagen7777
    @markhagen7777 3 ปีที่แล้ว

    Resourceful, wicked smart and funny like nobody. Thanks

  • @thinkingape7655
    @thinkingape7655 4 ปีที่แล้ว

    Thank you for going into such detail. 👍

  • @MM-rr1kp
    @MM-rr1kp 5 ปีที่แล้ว +14

    you said hole and shaft

  • @nimanikaiyn3392
    @nimanikaiyn3392 6 ปีที่แล้ว +5

    Hambini - great video. I actually own a Trek Damone BB90 and I don’t have a creak but hate the press fit design. I went online to your website and am very impressed with your BB designs. Do you have a distributor in the US or do you ship everything from UK? Great stuff, I’m very impressed and may try one of your bearing sets for my next B.B. change.

    • @Hambini
      @Hambini  6 ปีที่แล้ว +5

      Hi Nima, thanks for your comments. I don't have a US distributor. I did toy with the idea of going global but I'm quite content interfacing with customers by myself because I don't think the average bike shop could provide the level of technical support that would keep me satisfied. Thanks Hambini

  • @amaroudis
    @amaroudis 5 ปีที่แล้ว +2

    That is pretty damn cool you can diagnose their problem by running Fourier analysis on the audio of their video!!! lol

  • @paulhawkins6415
    @paulhawkins6415 6 ปีที่แล้ว +2

    Hambini's ALIVE!!!
    The sound analysis of the bottom bracket was very interesting, Thanks for showing that.
    So, what tolerance does Trek specify for their bottom bracket diameter and do they meet it?
    what about other manufactures?

    • @Hambini
      @Hambini  6 ปีที่แล้ว +1

      There is a bit of an overlap but anywhere from J6 to N7. From the one's I have physically measured they never get anywhere near their stated hence they sell 37.1mm bearings

    • @paulhawkins6415
      @paulhawkins6415 6 ปีที่แล้ว +1

      Thanks for replying Hambini. I make that about half to one thou in old money; much better than I thought.
      I was expecting two or three thou (.5 to .75 mm) plus or minus!

    • @Hambini
      @Hambini  6 ปีที่แล้ว +1

      You are right the one's I have measured are nearer 0.05 to 0.075 which is 2 to 3 thousands of an inch. So that's the as found.
      The "As required" is much tighter than that and they never get near it.

    • @cxwrench1
      @cxwrench1 5 ปีที่แล้ว

      @@Hambini I work at a Trek dealer and we have a significant number of frames that start out ok...no noise. After some time they seem to go from an interference fit to a slip fit. We install the 37.1 bearings but sometimes they get loose over time. What are the possible reasons for the fit 'changing'? Is there some very slight movement of the bearing in the carbon frame that causes a tiny bit of wear? This has been a mystery to me and I'd appreciate any insight you might have. Thanks!

    • @Hambini
      @Hambini  5 ปีที่แล้ว

      @@cxwrench1 it's usually micro movement over time that causes the wear. Cheap bearings which have flexible outer races will also be an issue

  • @watto65
    @watto65 5 ปีที่แล้ว

    So glad to see you’re back posting really educational/techy videos rather than just ranty slander (however grounded the comments may be) - it’s what I enjoy, and I believe what sets your channel apart (it’s why I subscribed). Anyone can be an opinionated cünt (#trump) - that doesn’t require intelligence - not everyone can communicate the physics and engineering. Brilliant work. Keep it up.

  • @GNX157
    @GNX157 6 ปีที่แล้ว

    In either case, the Trek BB90 is a perfect candidate for angular contact bearings, as they can tolerate additional side preload and I think that as one of the things this arrangement really needs to keep things from moving around in the netmold.

  • @allenlo1512
    @allenlo1512 6 ปีที่แล้ว +1

    Thank you. Learnt a lot from your video....

    • @Hambini
      @Hambini  6 ปีที่แล้ว +1

      Thanks for the feedback

  • @morrisizing
    @morrisizing 4 ปีที่แล้ว +1

    Production / Quality Improvement statician Edward Deming is a big part of the reason Japanese industry is know for good quality control / engineering tolerances.

    • @LaGrandeBayou
      @LaGrandeBayou 3 ปีที่แล้ว

      Precisely.
      Demming originally took his Quality check concepts to the US Army and they turned him down so he went to Japan...where they listened intently and incorporated his concepts.
      The rest is history and to this day the Demming Award is still one of the most prestigious in Japan.

  • @bobwells1517
    @bobwells1517 5 ปีที่แล้ว +1

    So with Trek/bb90, would the rider have been best off using a shimano system in the first place? Any thoughts on compatibility and creaking issues running campag ultra torque with bb90? Thanks, very informative video!

    • @Hambini
      @Hambini  5 ปีที่แล้ว

      Yes he would, the system was essentially designed for Shimano.

  • @choddo
    @choddo 5 ปีที่แล้ว +1

    This was fascinating, thanks. I've just asked my LBS to fit my Quarq power crank which is GXP into a new Trek with a BB90. No idea how they plan to do it so it was really interesting to see your approach and I loved the creak audio analysis. The GXP has another metal & rubber washer on both sides, as well as the wave washer on the drive side, which face onto the bearing inner races - do you keep those?

    • @Hambini
      @Hambini  5 ปีที่แล้ว

      Hi, sorry for the delay in responding. I don't keep anything for GXP on the shelf, it's made to order.

    • @choddo
      @choddo 5 ปีที่แล้ว

      Hambini hi - no problem. I actually meant “do you keep those washers in place when you fit your adaptations?”

    • @Hambini
      @Hambini  5 ปีที่แล้ว

      @@choddo yes thats correct.

  • @HECTORBIDO
    @HECTORBIDO 6 ปีที่แล้ว +3

    Very helpful. Although I own BB30 SPECIALIZED. I guess apply the same

    • @Hambini
      @Hambini  6 ปีที่แล้ว +1

      Thankyou! and yes same applies

  • @RonGabriel
    @RonGabriel 6 ปีที่แล้ว +1

    Excellent video, I have an Emonda SLR which has a mixed bottom bracket bearing from Enduro and HSC ceramics. I’ve been considering NTN bearings now to replace them. Thoughts?

    • @Hambini
      @Hambini  6 ปีที่แล้ว +2

      Hi Ron, I'd pick anything branded from a major supplier over HSC and Enduro any day of the week. It doesn't necessarily have to be NTN.

  • @tednruth453
    @tednruth453 8 หลายเดือนก่อน

    This vid is from 5 years ago.....how can Hambini be 5 years old!?!?! 😊

  • @sofmanb
    @sofmanb 5 ปีที่แล้ว +2

    what bearing size from your website would you recommend for a Trek Madone 2019? I see they all have 25 inner diameter whereas Trek requires 24 with a shimano crankset. Thank you so much

    • @choddo
      @choddo 5 ปีที่แล้ว

      Presumably www.hambini.com/bike-parts/trek-bb90-bearing-kit.html which refers to this very video

  • @jeremyphilander8833
    @jeremyphilander8833 4 ปีที่แล้ว +1

    All black fan...big up ..mr Hambini

  • @dewiz9596
    @dewiz9596 5 ปีที่แล้ว

    I’m “late to the channel”. . . but that big meffer of a bearing you hold in your hands reminds me of some bearings that were replaced in a small airplane I owned. . . Six bearings, which I can not see any problems with. . . but, with aircraft, you really are at the mercy of the “certified” mechanics. But, cutting to the chase, the six bearings were Timken roller bearings, angled races. I wonder why these are not used on bicycles rather than the point contact ball bearings. . .

  • @barefootdogwalker1402
    @barefootdogwalker1402 6 ปีที่แล้ว +2

    another brill video

  • @wihamaki
    @wihamaki 4 ปีที่แล้ว +1

    I saw Trek BB90 and swear I was going to hear the word 'shit' at least once in this video.

  • @philweezer4763
    @philweezer4763 4 ปีที่แล้ว +2

    I can still get a 2019 Domane SL6 (BB90) for around the same price as the new SL5 with the T47. Is it worth getting the T47 even though BB90 has Ultegra?

    • @dascott60
      @dascott60 4 ปีที่แล้ว

      My own very unscientific experience is that the Waterloo produced 700 series frames hold up well, below that the durability of the BB90 relates to rider weight among other issues. At 6'2" 200 pound and 6k miles a year, I chew up BB90 bearings and housings. Several 130 pound women I know have never had an issue.

  • @TrueWren
    @TrueWren 4 ปีที่แล้ว

    Hi, it seems the problem to the BB90 nightmare is the high precision bearings you supply, except would I know without measuring the bb shell itself. These bearings may be very precise but if the bb shell isn't they may not actually fit any better, is that correct?
    I dont have to much extra cash so wanna make sure I'm making progress.

  • @83Goodyear
    @83Goodyear 5 ปีที่แล้ว

    Hambini, brilliant video! I have a Trek Madone 9 RSL with the dreaded BB90. Im experiencing major creaking issues. I saw online that you can use Loctite to “fix” the bearing into the shim and eliminate the creaking. However after the trialing this I experienced the creaking again after about 1,500 Km. I’ve removed the bearings and they were in a bit of a state. They had rusted a little and the plastic seal over the bearing was slightly deformed.
    My question is what bearings should I replace them with? I’m not overly keen on spending £££ on ceramics. Also how should the be installed into the BB? With grease? Is the Loctite solution a good idea?
    What is the life expectancy of properly installed bearings on BB90? My LBS said that they should be replaced as much as tyres and break pads... that seems excessive?
    Thanks for any help you can give... it’s driving me crazy.

    • @Hambini
      @Hambini  5 ปีที่แล้ว

      I would get a decent set of steel bearings but ask for them at the top end of the tolerance range. Usually, SKF is a good starting point. Also the delrin sleeves are a bit of a thorny issue. the type I use are machined, a lot of the ones I have seen are moulded so you get a tolerance problem in there. HTH Hambini

  • @mustdobetter6748
    @mustdobetter6748 4 ปีที่แล้ว

    Am I understanding this correctly; for GXP, it’s better to have a minute amount of lateral play for the axel? Does that not create wear on the axle?

  • @heneric
    @heneric 3 ปีที่แล้ว

    Hambini, I was wondering what would work with my bottom bracket. I currently have a wheels mfg bb86/92. Which threads together. It’s for a dram gpx crank arm which has 22and 24 mm crank arm. the bike is a trek pro caliber and I’m assuming has a similar bb as it was specked from the factory with a press fit bb I’ve tried to clean everything out and put locktite on the shell and greased the threads and its still creaking everything else on the bike. Would this also be a lose non-drive side bearing or something else wrong with the bb it’s self. Thanks a lot!

  • @liszt1967
    @liszt1967 6 ปีที่แล้ว +3

    This fix was to put a GXP BB in a BB90 frame. What is the fix if one wants to stick with Shimano?

    • @Hambini
      @Hambini  6 ปีที่แล้ว +2

      90% the same, the only difference is the sleeves are both 24mm on shimano whereas 24mm and 22mm on GXP

    • @liszt1967
      @liszt1967 6 ปีที่แล้ว +2

      Hambini sorry if I'm dense... So that would mean using a bearing (which measures at the top of the tolerance for OD) with a 25mm ID and a delrin sleeve filling the gap? Isn't the delrin going to introduce flex and wear quickly?

    • @Hambini
      @Hambini  6 ปีที่แล้ว +5

      Yes, use a bearing at the top end of OD. For the bore, I always recommend using delrin. Bearings are made of hardened steel and the crank axles on Shimano are no where near as hard and they will wear. The delrin acts as a sacrificial layer so you won't destroy your axle. The compressive strength of delrin and nylon is indistinguishable from steel/aluminium for loads a human can apply.

    • @dhayden7724
      @dhayden7724 5 ปีที่แล้ว

      @@Hambini How does an average consumer get access to bearings at a target OD (i.e. at the end of a production tolerance)?

  • @ludovicwagner2656
    @ludovicwagner2656 4 ปีที่แล้ว

    Great explanations. I'm also a mechanical engineer (with kind of aeronautical background) and owner of a Trek Emonda SLR8 although it has been a while since I haven't dealt with bearings. I've recently noticed some creaking on my bottom bracket as well, but I'm not so sure it the creaking actually comes from the bottom bracket, because the frame is only a few months old (never ridden in rain). I'm about to replace the bearings with ceramic ones, but still need to think about it a bit. Can anyone advice? Otherwise, why not going for the SKF ones?

  • @TrueWren
    @TrueWren 5 ปีที่แล้ว

    Yiur brilliant, should do an update in an england shirt lol. Anyway, can you point me in the direction of a bb90 gxp bb. Also whats your thoughts on retaining compounds from the likes of locktite

  • @ColinWatters
    @ColinWatters 5 ปีที่แล้ว

    Nice work and great explanation. Did you have to buy and measure a lot of bearings to find one at the outer limit of tol.

    • @Hambini
      @Hambini  5 ปีที่แล้ว

      Yes. About 50

  • @guitarman4242
    @guitarman4242 6 ปีที่แล้ว +2

    Great Vid- my BB90 never creaked ( lucky I guess), but I love your highly technical and detailed analysis. Not to hijack the thread, but Aircrash Investigations is my favorite series on youtube. Did you work with the NTSB or on the supplier side? Now your valuable bike analysis makes sense based on your background. Glad to see this stuff on such a technical level. Please keep doing it.

    • @Hambini
      @Hambini  6 ปีที่แล้ว +1

      Thanks for the comments, they are always appreciated! I was from the supplier side (engines), it was a good job in the sense it teaches you skills you can apply in life as a whole. thanks hambini

    • @guitarman4242
      @guitarman4242 6 ปีที่แล้ว +1

      Indeed. Glad your past life carried over into the world of bicycle analysis. Those who are serious and conscience about riding could use more from you. No marketing fluff- just real stuff. Best to you.

    • @Hambini
      @Hambini  6 ปีที่แล้ว +1

      Thankyou!

  • @markrushton1516
    @markrushton1516 5 ปีที่แล้ว +1

    Perhaps bike companies would be better employing you to design their various systems. I take it the systems arent designed with particular engineering in mind? In your opinion what is the best BB system(s) on the market.

  • @johnrodgers7181
    @johnrodgers7181 6 ปีที่แล้ว

    Interesting video, I have a trek bb90 with with 37x24x7mm bearings and shimano. It looks like the only option is to replace with Enduro bearings for this size. The NTN/SKS bearings you mention appear to be good in terms of fitting into the shell, but does the internal diameter not need to be 24mm instead of the 25mm in those bearing types?

    • @Hambini
      @Hambini  6 ปีที่แล้ว

      It does, you would need some delrin spacers to do the interfacing. This is a fairly standard practice to use standard bearings in BB90

    • @johnrodgers7181
      @johnrodgers7181 6 ปีที่แล้ว

      Thanks for the reply, do you where I can get these?

  • @airguillo31
    @airguillo31 6 ปีที่แล้ว

    hey Hambini, great video once again.
    Did you see the new release of the specialized venge? It suppose to use FreeFoil profile in its tubes instead of the Kammtail on the Madone. Do you think is it going to be faster? How about a new aero video?

    • @Hambini
      @Hambini  6 ปีที่แล้ว +1

      Hi, yes I did. It's very similar to the BMC tripwire. Half of the problem I have is trying to explain aerodynamics to an audience in 10 minutes so they understand it.

    • @EnlightenedSavage
      @EnlightenedSavage 5 ปีที่แล้ว

      @@Hambini 10 min is not required. Take as long as you need. People will watch.

  • @rodpalm6398
    @rodpalm6398 5 ปีที่แล้ว

    Hambini, you should try Boca Bearings.

    • @Hambini
      @Hambini  5 ปีที่แล้ว +1

      Are you pulling my leg?

  • @thethoughtmaster
    @thethoughtmaster 2 ปีที่แล้ว

    I am returning a cheap ANGSI Montbike that was not pro fit geometry, they did not put the proper components that fit and it sounds like the spindle is rocking up and down on the bearings or the bearing cups are loose. Cheap peddles are the first thing to check that have no bearings but after buying MKS the noise was getting worse, the repair shop said the bike is not fit for purpose with no EU/BS standard certification either. COBRA BIKES will refund. I will buy a TREK MARLIN and build it myself with ACERA if possible. 14:25 they renew machine components before they wear out. This is why some housings are loose too with tubes being built with old machinery.

  • @martin7640
    @martin7640 6 ปีที่แล้ว +1

    Love your videos. Have you covered T47 yet? I run this on a couple of bikes ( one Ti and 1 steel ). My experience is I still get bearing creak/clicks under load and frequently have to service ( re grease ). I also have enduro bearings which I’m learning, thank you, are not the best. Any perspective on T47?

    • @Hambini
      @Hambini  6 ปีที่แล้ว

      Hi Martin, I don't think T47 will take on because it requires a very big hole for the threading and it's essentially a threaded in PF30. If they sorted the manufacturing out such that the holes were to specification then they wouldn't need to invent another standard.
      All bottom brackets, whether they are press fit or threaded have an interference fit between the bearings and whatever they are going into. Adding a layer of complexity is not worth it in my opinion.
      Hambini

  • @richjones2767
    @richjones2767 6 ปีที่แล้ว

    How do you buy a bearing at the top end of the tolerance range, does the manufacturer class them or are you going through a whole pile of stock measurung everything?

    • @Hambini
      @Hambini  6 ปีที่แล้ว +2

      You have to measure them individually.

  • @batbawls
    @batbawls 6 ปีที่แล้ว +1

    MVP

  • @mgoo1713
    @mgoo1713 5 ปีที่แล้ว +1

    What's you take on the Sram DUB BB system?
    Thank you.

    • @Hambini
      @Hambini  5 ปีที่แล้ว +3

      Not very good. To put it bluntly. Shite

  • @davidpch
    @davidpch 5 ปีที่แล้ว

    Hi!
    Great video!
    I came here when searching for a problem with my Trek Boone with BB90. I've noticed recently that the crankset (I use SRAM GXP) has a side play, even though everything is well tight. I disassembled the crank and the NDS bearing is a bit loose, I can take it out easily with my own hand. I was told by the mechanic that this is the carbon that is already worn out, and the bearing is loose, and even if I replace it it with a new one, it won't solve the problem...basically he told me to contact Trek for warranty and pray.
    Do you have any opinion on this? Does the carbon gets worn out in the bearing interface or will a tighter bearing might solve it?
    Thanks!

    • @Hambini
      @Hambini  5 ปีที่แล้ว

      The bearing is a lot harder than the shell so it is easily possible for the hole to get worn. The problem is it tends to wear it oval so fitting a well oversized bearing squishes it.
      It's a poor system.

    • @Goingforbroke71
      @Goingforbroke71 4 ปีที่แล้ว

      I know it’s been a bit and maybe you have solved, but if you reach out to trek they will first offer the larger OD bearing to try. In my case that didn’t solve so I sent my frame back to trek and they repaired the frame to properly fit the bearing. No issues since.

  • @TrueWren
    @TrueWren 5 ปีที่แล้ว

    Would you say the the shimano hollowtech 2 system is superior to gxp?

  • @zzhughesd
    @zzhughesd 3 ปีที่แล้ว

    I’m worried. I now have creaking on the bb9O after 3 years . Last time cranks came out swap over the cartridge bearings literally fell out. Is this really bad

  • @jordanfosterssn
    @jordanfosterssn 4 ปีที่แล้ว

    @hambini Would there be am advantage to using 6805LLBP2 over 6805LLB for the bb90?
    Thanks in advance

    • @Hambini
      @Hambini  4 ปีที่แล้ว

      Nope, you need to get the bigger size. precision not so important.

    • @jordanfosterssn
      @jordanfosterssn 4 ปีที่แล้ว

      @@Hambini excellent! Do you plan to restock your trek bb90 kit at any point in the near future?

  • @ozesalsa
    @ozesalsa 5 ปีที่แล้ว

    On my Felt F5, a AU$1750 bike, came a BB30. This BB started to creek after about 10,000 klms, so I asked the bike shop about it and they said ooh that will cost a lot to fix. Mmm, I didnt want to spend a lot of money on this great bike, so I took this opportunity to do some research on TH-cam and ebay to replace the FSA bearings with ceramic bearings. I bought a set of Chinese bearings on Ebay for $22, a set of BB30 bearing press dollies $9 and a big galvanized bolt for a press. Knocked out the old FSA bearings and pressed in the ceramic bearings. Now just before I put the cranks back in, I thought, if this was a motor cycle you wouldnt put the crankcase together without oil in it, mmm. So I put in about a tablespoon full of cheap penetrating oil. That oil worked a treat, made the bearings very happy and contrary to advise, it never leaked out, and those bearings never creaked again. Low tech solution to a high tech problem. Cheers.

  • @shibaburn7725
    @shibaburn7725 5 ปีที่แล้ว +1

    Trek actually sells what they call BB90 v2 bearings with an OD of 37.1 mm (Trek Part Number 428781). Search for "trek bb90 v2 bearings" to find discussions detailing what a nightmare BB90 is.

    • @Hambini
      @Hambini  5 ปีที่แล้ว

      The problem is if you are just over sized, lets say 37mm, the 0.1mm interference will kill the bearing clearance so whilst it may not creak, it will be rough and draggy.

    • @shibaburn7725
      @shibaburn7725 5 ปีที่แล้ว

      @@Hambini I wasn't suggesting that Trek's "solution" is a good one... I was just pointing out BB90 problems are so common that Trek offers a "solution".

    • @TrueWren
      @TrueWren 5 ปีที่แล้ว

      @@Hambini what do you mean by this?

  • @fredrikstennert3754
    @fredrikstennert3754 5 ปีที่แล้ว

    Hello,
    On your webpage you write “Installation of this kit must be in conjunction with Activator and retaining compound” what are the best options for this? Loctite 7649 and 641?

    • @Hambini
      @Hambini  5 ปีที่แล้ว +1

      HI Fredrik, they are the two that I use and would recommend. Depending on whereabouts you live they may not be available so you may have to try an alternative.

    • @user-lq6bv1qs3s
      @user-lq6bv1qs3s 2 ปีที่แล้ว

      @@Hambini Fantastic everything as always. What about when replacement of the Loctite’d bearings is required? I’d guess freeze spray on the bearings to help crack the bond of the retaining compound? As I don’t think heating the carbon housing would do it any good?!
      Thanks for all you do Mr Hambini 👏

  • @colecoleman1499
    @colecoleman1499 ปีที่แล้ว

    What's the actual application of that laser. It was made to measure what please?

  • @Kanonka28
    @Kanonka28 2 ปีที่แล้ว

    Which is worse BB 30 or BB 90?

  • @nationharris
    @nationharris 4 ปีที่แล้ว

    What about a creaking Shimano chainset on a bb90?

  • @BlackyBrownDestruction9337
    @BlackyBrownDestruction9337 ปีที่แล้ว

    Pressed fit bb is ghetto fabulous

  • @deutscheklassiker5677
    @deutscheklassiker5677 5 ปีที่แล้ว

    Very good that you take the time to share. I had a Giant TCR and it creaked badly and a Colnago C60 which creaked its tits off.. Now back riding a steel colnago with threaded BB and I can ride in silence. Id love a new bike or frameset but what to buy? Is push/press fit here to stay? Can you recommend brands with awesome tolerance and no creak?

  • @matthewyaron5827
    @matthewyaron5827 4 ปีที่แล้ว

    I don't even care and I watch it!!

  • @rickdoehler502
    @rickdoehler502 4 ปีที่แล้ว

    Not to be an idiot, but what is the actual nearing I.D. for the SKF bearings for a BB90?

  • @ryr4889
    @ryr4889 4 ปีที่แล้ว +1

    Fcukin' Brilliant!

  • @brian.d.mobley
    @brian.d.mobley 3 ปีที่แล้ว

    It would be great if you added time stamps to this video.

  • @markjthomson
    @markjthomson 5 ปีที่แล้ว

    Most excellent shirt... Go the AB's! Cool video analysis as well thanks... :)

  • @peterliljebladh
    @peterliljebladh 3 ปีที่แล้ว

    Why don't all manufacturers use an internal sleeve to accomplish perfect hole caracteristics?
    It's been proven many times over that working with carbon molding is difficult to say the least.

  • @timtaylor9590
    @timtaylor9590 3 ปีที่แล้ว

    hambini make a 2 piece bb for the trek bb90.

  • @timmylumsden8060
    @timmylumsden8060 4 ปีที่แล้ว

    Only just discovered you...you make my brain bleed

  • @josephtransue9132
    @josephtransue9132 4 ปีที่แล้ว

    So am I nuts when I tell you I got my bb90 creak to go away by tightening the skewers? Well thats what happened.

  • @rkan2
    @rkan2 6 ปีที่แล้ว +1

    Mentioning the "customer's" name at the end is GDPR compliant? :)

    • @Hambini
      @Hambini  6 ปีที่แล้ว +2

      Probably not but there are probably 500,000 greg's in the world

    • @Hexsense
      @Hexsense 6 ปีที่แล้ว +1

      and couple thousands that own a red Trek Madone.
      Few of them have ridden at the course shown in the videos.

    • @G4ogami
      @G4ogami 6 ปีที่แล้ว +6

      I think it is GDPR compliant as we previously spoke about him using my case in one of his videos. All is well in the world.

    • @zzhughesd
      @zzhughesd 6 ปีที่แล้ว +2

      Yup in United States estimated 327,538 alone,

  • @Mr.Sheffield75
    @Mr.Sheffield75 4 ปีที่แล้ว

    All blacks fan?

  • @mannycweiss3053
    @mannycweiss3053 3 ปีที่แล้ว

    Pick cartoons for 100 man!!!

  • @ThePaulbself
    @ThePaulbself 3 ปีที่แล้ว

    Token Ninja Zenith BB solves this problem

  • @alexnice9847
    @alexnice9847 4 ปีที่แล้ว

    I am going to buy an endurance bike in about 6 months. Trek sl6 with T47 BB doesn't seem to have the creaking isssue of their BB90, according to their website : 'No more creaking. Smooth operation. Fast bearing replacement.' www.trekbikes.com/us/en_US/equipment/cycling-components/bike-bottom-brackets/praxis-shimano-t47-inboard-bottom-bracket/p/593089/ at least they're aware of this issue. Has anyone experienced creaking with T47?

  • @nathanroberson
    @nathanroberson 6 ปีที่แล้ว +1

    GXP. Worst bb format in the bike world.

    • @Hambini
      @Hambini  6 ปีที่แล้ว

      I agree

  • @robynhughes6216
    @robynhughes6216 3 ปีที่แล้ว

    Why are you wearing an all black shirt?

  • @Ovnitoyyocom
    @Ovnitoyyocom ปีที่แล้ว

    Are you Hambini an aeronautical engineer?… You just need to understand what the industry standard is for any device that incorporates bearings. Sorry for my English.
    In order to function properly, a bearing needs an adjustment in its housing on both the inner and outer race, and requires being placed or removed under pressure with a press. Only then will a bearing perfectly fulfill its intended function. This does not happen in a bottom bracket whose axle is placed or removed by hand, and soon, whether threaded or not, it will produce clicking, wear and large clearances in both tracks that are impossible to solve, because a toy technology was applied for a bottom bracket.
    Misalignment has a negative influence, but carbon is not a material that can seat a steel bearing with guarantees a bottom bracket.

  • @mrossainz
    @mrossainz 3 ปีที่แล้ว

    The more I see his vids the less I get how Trek, Cervélo, etc... charge thousands of dollars for pretty much garbage products. Holly effs