Cannondale REAMING GOES WRONG!!! C-Bear Snake Oil Exposed
HTML-код
- Опубликовано: 11 июл 2024
- You can view the exchange of emails between me and C-Bear here
www.hambini.com/c-bear_bottom...
This Cannondale Synapse frame arrived at Hambini HQ for a bottom bracket change. The individual wanted to go from a 30mm crankset to a 24mm crankset. He could not remove the existing bottom bracket and found that bearing performance was poor.
After investigation, it was revealed that the C-Bear bottom bracket that was fitted had an interference of 0.16mm in the worst case. That level of interference would make most carbon fibre based bike frames crack.
Website: www.hambini.com
If you enjoy unbiased journalism, reviews and reamings (roasts) then please subscribe to me on patreon
/ hambini
On Instagram
/ hambineng
On Facebook
/ hambinieng
#hambini #hambineng 
Спорт
Tks to those who alerted us to the public postings Mr. Hambini has published in his various channels at various times, relating to CB.
Why the same info were not simply and openly shared with us at the beginning, both dimensions, a simple spin test video (does not have to be in the youtube-ready-to-present format) . The conversation would have been constructive and meaningful.
We are glad to learn from this ONE case, and finally see the same info as the viewers , and take appropriate action.
Hambini is presenting one case finding and his theory.
Facts remains there are plenty of actual CB performing BB30A-86 in the field.
C-bear bb30A-30 may look simple, but it is not as simple as Hambini thinks.
Perhaps if you openly shared your answer to the direct question is 42.08mm an acceptable interference fit. The conversation would have been constructive and meaningful. I note you still haven't answered the question. Are you going to answer it? Here's a link to the email exchange www.hambini.com/c-bear_bottom_bracket_response/
@C-BEAR, The emails that have been posted make it quite clear that you were given ample opportunity to respond and answer to a question. You chose to mess around with your response and now you are begging forgiveness claiming it was an isolated incident and Hambini's actions are shady and underhand. Scroll down and you will see many people with problematic C-Bear bottom brackets. It is not the fact that you made a mistake, it is the way you went about trying to cover it up and then your post above accusing Hambini of a smear campaign. You have been exposed and you only have your own stupidity to thank.
This ONE? Are your bottom brackets made individually by hand? Or on a production line, cos if its production line only god know how many there are out there.
All you have to do is answer Yes or No. So answer Yes or No, why are you being salty?
You needed to be “alerted?” I guess the emails Hambini sent directly to you didn’t do the trick, huh, bub… 😂🤣😂🤣😂🤣😆
Sewage Engineering was a term I coined specifically for your plumbing business!
I've borrowed it for c bear
Did you find his hairdresser stuck under the kitchen sink?
At least a decent plumber can fix things. I recently paid a plumber and his team $22K to repipe my house in copper. They did a great job. I believe I got a pretty good value. Even at plumber's prices!! Everything functions perfectly. If there's a problem, I KNOW where the plumbers office is! I got EXACTLY what I expected, no surprises!
Compared to plastic bike junk, this was an incredible deal! Haha.
You wouldn't catch me paying 1/2 that on an, overpriced, under-engineered, small plastic molded assembly demonstrating shit for quality, made by low paid, underskilled workers.
Do a bit of research to find out what 'high end' production frames actually cost to produce. Find out what their profit margin is. You will be 'amazed'.
I know. I wrench in this industry. Its simply job security for me! The larger bike industry ashame me, yet my time is valuable and in demand like never before!
Most of this sort of garbage would serve better as land fill. WHY do y'all PAY for other folks problems? Maybe consider your own decision in the 1st place??
Manufacturers simply put lipstick on a pig! And suckers born every minute make it hard to find available. I find this present bike boom fascinating.
Marketing BS is nothing but snake oil sales. Yet consumers continue to buy this garbage and create unprecedented demand.
Haha,Considering the World Wide Web, modern technology and people with money to literally burn, I find this all entirely ironic!
My bike!!! 🤣🤣🤣🤣
It rides lovely now, thanks Hambini! And changing the siezed bearings in the Hunt wheel made all the difference too. I can now shrill that they are 'fast, very fast and pick up speed like nothing else!!' 😆
Crappo bear's response is somewhere on the scale between crap and diarrhea
@@Hambini diarrhea, diarrhea, lovely diarrhea coming out ya ear
"I was raided by interpol while me and the hairdersser were watching a skillshare video on how to dye one's pubes." - I spat my coffee
@@theillegalimmigrant9314 Disappointingly Hambini didn't provide a link in the description to that skillshare video. Guess I'll need to improvise.
@@test868 There must be courses on hairdressing?!?
The rivet on the chainring goes behind the crank arm to stop the chain getting wedged between the crank arm and the spider. (Just commenting before 1,000 people make the same comment.)
ahahahaha
Here to make the same comment
don't worry they will anyway, most people comment first and then read later if at all
They still will - most people comment first and then (maybe) read some other responses...
that was a better reaming than a danish towel boy at a kevin spacey cocktail party
Hambini is a cycling hero, as he's got the balls to face big bike lobby that should go on precision and standardisation instead of silly creativity.
I fitted a set of C-bear ceramic/alloy jockey wheels to bling up my GX groupset some years ago when I naively thought it was a good idea, the bearings had play in them from day one and eventually the alloy wheel exploded and fucked my derailleur up so badly I walked home 34km. That's when I learned not to buy into derailleur pulleys and nonsense products...then I discovered your channel, it was like coming full circle. I've learnt so much in the last couple years in regards to engineering and principles just from your channel that it has inspired me to do more reading on subjects such as aerodynamics, QA/QC, mechanical engineering etc mainly so I don't get fucked over by shitbags but also because I'm lazy and I don't want to put out more watts than I have to so if there's free margi al gains to be had I will have them all. My greatest achievement to date has been getting blocked by Absolute Black on all their social media pages for asking awkward questions :).
That’s the problem with the entire bike industry. Yes technically bigger pulleys are more efficient but maybe the frame manufacturers should figure out how to make round holes in their bottom brackets before they sell us something new. Especially when the quality is crap and makes the bike not get you from point a to b.
Absolute black, that famous company that relies on data from an unnamed professor at an unidentified Portuguese university
@@Hambini Like the videos and we learn a lot from them but the part of Portuguese university was avoidable 🤔🤔
Nobody in particular,
Often the most expensive mistakes we make, make for the best learning experience.
When we keep making the same mistakes, what have we learned??
Now look at the present high demand for garbage.......
What would/SHOULD that tell thoughtful folks?
Ahaj kudos for being blocked by absolutekwack . I was too. Greatest achievement so far
C bear have to date not specified if their bottom bracket was made to specification and have tried to duck the question. Somewhat shady behaviour but it's the bike industry. On a more serious note, if you did fit this, most frames would crack.
Hello Master, could you please share link to that milling tool, I was checking on amazon could not find?
Thank you in advance.
@@ArtemSure It´s a honing tool, not a milling tool. Rgr
@@borano2031 thank you Sir
@@ArtemSure search for a brake cylinder hone tool
A chap above mentioned, ' honing tools, Machine Mart have them for under £16'.
Why has it become the norm for businesses to literally lie to their customers? How have we all been numbed to accept it? Glad you're pointing out the nonsense
I think the issue is with aftermarket parts is the wide range of BB tolerances they have to fit. If they made them to the proper spec, some would be fine and others like a Wizard's sleeve. So, they just make 'em big avoid all the customer service queries.
I'm glad when the bearings went south I could get Hambini to fix it!
capitalism demands profit maximisation over all else. Businessess with any degree of ethics have been- and will continue to be- forced to the sidelines and eventually out of the market altogether.
There is going beyond the spec but then there is plain shite. The key thing here is there is 0.06mm variation between the c bear cups. That is indicative of shite quality control. I would be ashamed with that level of deviation
Nobody wants to accept responsibility. This is true of cars, home appliances, and Apple.
@@firesurfer and they want to make money. Like... As much money as they can squeeze out of the process.
Hambini, I love your satirical engineering exploits. As a fellow engineer I find it hilarious and wish that more people in the engineering field were held accountable for their designs.
Again, what's all this talk of bike companies and "engineering" in the same sentences???
😁😁😁
Absolutely love your videos. They have inspired me to do all my own bike maintenance now. I won’t have any shop work on my bikes now I do everything myself from bottom brackets, wheel bearings, headsets etc. What you did on that bike almost no bike shop out there would be able to do.
Great job on the explaining Ham, loving your work..
Interesting as usual.
Glad I'm still using up my stash of Shimano Octalink BBs.
I do have one Cannondale with PF30 that the Hambini BB fixed. Glad to see they went to a single aluminum inside the BB shell- has to be way easier to make correctly than the straight carbon ones.
An ideal solution and a competent approach to solving a complex issue! 👌
Fucking hell I physically flinched when the cylinder honing tool started spinning. It's like being at the bloody dentist lolz
you should see how it feels when using a Flex-hone to adjust a seat tube internal diameter when it comes out of the box a bit tighty, like 0,5 to 0,8mm tight. 😬
hint: kinda feels like those JAV _accessories_ with the steel balls going up and down around the shaft. especially when super oily... 😏
_"...like being at the bloody dentist "_ admit it--you liked it ;-)
@@MrJx4000 I must admit it gave me the downstairs collywobbles
another great video.....love how many tools you have and that can be needed to make things right...definitely an eye opener
What a brave man, first time I watched a video where the people dislike the video were told to screw themselves.
An action I agree with 100%. What is there not to like about a Hambini video?
@@charlesmansplaining not enough OBI shipping? 😏
@@charlesmansplaining If you bought this crap, your feelings, pride and intellect might be compromised. Never mind compromising your ride, safety or mental health!
I feel like this one got us the trifecta with with the video watching hairdresser, "less than Ideal" Luescher, and "Sewerage Engineering" Peak Torque all being referenced or acknowledged. So much talent crammed into one twenty minute video!
'I won't be wasting time accurately measuring a turd' hahahaha master level roast 🤣
As always awesome video and your knowledge and fix is supreme😊👍
In 2013 I bought a new Cannondale Supersix 105 2012 model for £1200 GBP. I sold the FSA crank and fitted a Dura Ace 7900 I had.
A simple process, the original bearing tapped out easily and the Shimano thread alloy one piece sleeve was only £12 GBP from Cannondale's own website. The instructions said it should be considered semi-permanent and refitted no more than twice.
It was a tight fit but a £6 homemade threaded rod, nut, and washer press from eBay just about worked.
I've been riding it ever since with no problems.
Conclusions: these cheaper carbon frames from Cannondale were built strongly and well. The bottom bracket area is very chunky. There were no obsessive attempts at weight saving. The geometry and measurements were all good.
Just keep doing what you're doing Hambini...exposing the shysters and charlatans that infest the cycling industry. They tremble in fear of a Hambini reaming!
Always watch Hambini videos as soon as they're posted, just in case they get pulled later !
Thanks for calling them out Hambini. I had an issue with my C-Bear BB last spring (the bearing were coming out by themselves of the cup without any resistance). My bike was creaking so much. I tried contacting them since it had only been 18 months since I bought the BB (they advertise on their website a no questions asked 2 years warranty) and they ask a whole lot of questions and required pictures. Went to the shop, disassembled my bike, provided lots of pictures and they refused to replace the BB or refund me entirely since I was near the 24 months mark. Well is it a 2 year warranty or not? Very shady. I bought this from C-Bear specifically because they advertise “silent performance” and a 2 year warranty and in the end, you could hear my bike creak from 15 feet away and I was unable to warranty the BB.
So what kind of a BB fixed this?
I've pinned their top comment. It looks like they have lots of "isolated incidents"
ANY company that does not stand to its products / warranty and shies away from customer service has to be denounced . Walk of shame C-Bear.
@@MrJx4000 My LBS recommended the BB30A Outboard Angular Contact BB for 24mm Cranks (Shimano) from Wheels Manufacturing
"I wasn't going to waste my time accurately measuring a turd" 😆
Thanks for the video.
Just in case anybody wants one of those honing tools, Machine Mart have them for under £16 (very useful for cleaning up burrs etc in seat tubes in alu frames. Just don't spin them too fast)
i dont understand most of the physics / technical stuff, i just like your abrasive style - keep it up !
Very very good Hambini. I am enjoying your explanations of poor bike engineering practices more than ever.
I just really like what you’re doing with this channel ..
Great result brother !
I was shawshanked in to watching this video. ONE because it discusses the exact same frame as mine which also had a BB creak problem and TWO because I considered CBear as replacement BB at one time for my frame as well.
At that time I contacted them and specifically asked "One more question. Are your BBs serviceable ie can I replace their bearings later on?"
They responded to my email but simply ignored my question.
I ended up going with Token Ninja. A good compromise for someone like me. Its been working fine thus far for me (1000kms or so).
Regardless. As always, Great video Hambini!
Great vid Hambini; what I like most is you have the correct tools to measure how bad the bb was and give proper fact based evidence, that the company should have looked into with you and put their hands up for the poor fit and looked to improve there quality standards, after all if a 5 year old can spot it, all the adults in the engineering department of said company should do too 😁
I’m loving your channel at the moment Hambini, engineering within the bike industry is just woeful, just picked up a brand new Giant Defy which has rear flat mounts that look like they have been machined with a toothbrush…
My own experience with C bear isn’t great either, having a Dolan frame that originally came with SRAM GXP I opted for one of their units when you couldn’t supply a GXP type, after 3k miles the LHS bearing felt like crap, so I contacted them and they claimed it was due to lack of maintenance and that I should have cleaned and regreased it, I think the main problem here was the GXP standard and LHS bearing failure as you have pointed out before on your channel, but it was clear they didn’t want to know. I swapped out for a Shimano chainset and the issues went away, when the current BB wears out I will be putting a Hambini in! Keep up the great work 👍
I'm thinking the same thing. Once bearing or thread BB in my Time Izon wear out, I'm thinking of using Hambini BB.
During the pandemic and with increased demand, quality control has taken a massive hit. I've seen plenty of less than ideal situations from many beloved manufacturers... but then with Giant I've seen some attrociously built bikes prior to the pandemic too.
Your flat mount wasn't machined, just like pressfit shit BBs. That's part of the problem. Compromise for profit.
The other problem is that consumers compromise, buy and demand this garbage. Theres huge demand right now. As long as that continues,nothing will change. Why should they change when there's unprecedented demand?
@@Metal-Possum When companies get too big, they forget that it's the quality that put them on map.
@@Reanimator999 Giant didn't win on quality, they won on volume and price.
17:33
damn, that tool. I thought of some other thing...
love your work mate
thank you
may i ask about the "grease" you use with the hone?
Excellent video, good result.
You are the best Hambini 👍
Ideally, for the amount of frames you seem you ream, it may be worth to get a milling machine and bore to tolerances.
These plastic frames aren't worth the hassle or money. A 'high end' Asian made Production frame costs no more than $400 to produce.
I'm a retired machinist and inspector. I understand what skilled labor,QC and precision machinery cost.
I love that jop well done Engineering Hambini .
Funny you mention Factor because they’re doing the Canyon route, throw bikes at all the influencers
I think its about time to make a Hambini ranking list of bike makers.
I was stunned by the report on Legend bikes (Bertoletti).
So far I know that , Cannondale some times do okay, Time and Look do okay, NTN and SKF are good. Shimano has many holes, but they are like paper to writings, drawings
@@bb1039 I’m not sure why he shies away from it. From what I’ve seen:
-Frame: Look or a Time, Winspace, Hungfu/Dengfu or a Giant, the rest are hit or miss. Don’t even consider Cervelo, Canyon, Factor, Open, and some others I can’t pull to memory right now.
-Wheels: Not Flo or anything with ceramics less Winspace (perhaps). Make sure they don’t fall apart/a spoke breaks randomly.
-Groupset: Shimano but with different cranks. If you want their cranks 105 cranks (solid piece). (Peak Torque rates Rotor cranks)
Great video as always. What type of Mobil grease is this red stuff?
"synapse ... or crap" 😂 great start for this weeks reaming
Everybody makes mistakes. What is telling, is the response to the mistake being found. The proper response by C Bear would have been, "Well, let's figure out what we can do so this doesn't happen again."
_"...Well, let's figure out ..."_ Politicians say that all the time--that's how they make their living ;-)
A proper response should of been is... this is the clearance, If its out of spec mail it to us and we will mail you back a new one or even a updated version free of charge.
Then again, shouldn't we appreciate their honesty by NOT saying that? Because if they HAD, we'd know we were just being strung along even more!
A new Hambini video!! woo-hoo, great start to the day here in the good ole USofA! haha
Did I miss the Time Scylon video? very interested in what ole Hamby has to say about it, as I am currently looking at a Time ADHX or A d'H 21 as a replacement/addition to my 20 yo Calfee Luna Pro, plus several mtbs.
Oh C-Bear. You don’t mess with Hambini. Hambini messes with you!
This type of customer service is typical in the cycling industry. Zero transparency or accountability.
Glorious lines from this reaming: "I was raided by interpol while me and the hairdresser were watching a skillshare video on how to dye one's pubes."
"I wasn't going to waste my time accurately measuring a turd"
"Reamed more than Cameron Jeffers when he got stripped of his zwift title".
You couldn't script this!
I audibly laughed out loud at all of those jokes. So good
You saved me , was about to buy a C Bear for my SuperSix
That quick clamp is quite the tool
when he says "quite heavy damage to the shaft" and doesn't even make a joke out of it.
Had a nightmare with my cervelo s5 a few years back. Got a mechanic to install a C bear BB bearing , he ended up cracking the frame trying to install it. Always wondered was it the BB or the bearing. Luckily Cervelo gave me a new frame .
More ENTERTAINMENT! 👍. I do believe the Rotor rings can be rotated in relation to the pedal shaft to fine tune the power stroke to your liking. “Stroke” as to pedalling, not other forms of exercise. Lol
Yeah, you can. But I decided just to go with round chainrings. On the previous Rotor 3D+ I had oval Absolutely Black (!!!) and dropped a few chains so didn't bother this time around. The one piece Rotor chainring is a lovely and as I have short 155mm cranks I could fit 46/30 to help with cadence vs torque.
Excellent roast 😂
Did I miss the bit where you came back to talk about the damage on the crank axle? Only I have some cranks with similar issues so was interested to hear your thoughts. Good vid as always though. Thanks.
If the bearings are stiff the shaft can rotate in the inner ring part of the bearing. Effectively the bearing becomes a plain bearing rather than a ball bearing. The bearing is harder than the shaft so it gets worn/damaged. Think that's what's had been going on.
Don't even like road bikes, but this channel is magic. Hope there's some mtb content...?
love those new rotor cranks :)
“And as always, keep banging your hair dresser.” Classic. Great engineering. Great humor. Great channel. Thanks!
Nice Job👍🏻
Liking the fiskars tools in the workshop 👍
I have cbear on my bike. I’ve removed the shell once to inspect it after 2 years, and I’ve also replaced the bearings many times without issues using a cheap pressfit install/removal tool I got from aliexpress. The bearings always seem to get corroded, and I hardly ride in the rain, and I dont sweat that much. Other than that, I have no issue with the BB. No creaking whatsoever. And it’s relatively cheap. Of course I never measured the shell, so I dont know if it’s deformed. What’s weird is cbear specifies using anti seize, not grease, when installing the BB, even the pressfit one.
I love "standards" because their are so many to choose from.
That cleaning tool is awesome.
I have the same experience with CBear, oversized cups way out of tolerance limits. I even have a video about it.
Currently using Hambini BB. Expensive, but worth every penny
Where? I only see 3 videos that you've done. None are on CBear that I could see.
ruclips.net/video/AYGtZQXHfBs/видео.html
I had exactly the same experience with a C-bear bottom bracket: It was stuck in the frame and didn't rotate at all. It appeared as well the dimensions where way off from what acceptable tolerances should be. Step 1: learn about the fit standards and tolerances. Step 2: apply decent quality control on your production.
What a nightmare to remove those rotor cranks
What a lot of hassle to remove a bb. Thank Christ they’re going back to screw in bb’s .
Your vídeos are awesome. Just had to say it.
Relieved that my System6 didn't have that problem... What about the damage to the crank?
I wouldn’t like to see Hambini perform a smear test.
Yes the know it! I send them a email in 2020 with the same issue on the gxp cbear bracket. It was so hard to remove it, so i measured the cups. exacly the same between 0.1 an 0.2mm to big! I have never seen the reaction from C bear. On the Foil the crank was spinning fine but bearings are worn out after 4K. In the Netherlands C bear has a good name. Ik don,t know why. Every bike i service has worn bearings after 4 till 6k due this issue.
I have a CBear BB. Works good at the moment, hopefully mine came from a reasonable batch. 🤔
"The usual scumbags, Cannondale"... too funny.
Whoever said sarcasm is the lowest form of wit had obviously never watched a Hambini video, he turns sarcasm into an art form.😀
I'm inclined to think these engineering 'faults' that are outside of the 'established' tolerances are intentional.... the industry appears to have created a disposable mantra to shift more units that wear or expire prematurely
thanks monetary 'economy'
_"...outside of the 'established' tolerances are intentional"_ no, it's just that QA/QC equals money. They saw an opportunity to save a tenth of a million, and took it. It's up to us consumers to tell them their products/services are N.F.G.
The client is going to fly now, after all that riding with ridiculous drag the bb had. 🤭
I have seen frames damaged by pressing in an incorrect size BB unit into the carbon housing which is #lessthanideal.
Although I give kudos to C-Bear for making oversize units to fit incorrectly made pressfit carbon frames, which we know are quite a few as often featured on this channel, now all we need is another BB standard such as PFOSA, PFOSB etc etc, surely this will revolutionise the bike industry! 🤣
Hambini reaming time !!!
Canondale: Oh C-Bear! You're so big, you're breaking me! Oh C-Bear, you're stuck!
I'm now wondering if there is any bike frames on the market that are worth investing in. It seems Look, Time, and some Cannondales but not all are the only ones that seem to have there act together. Any suggestions????? Maybe I should have not sold my older Look frame.
I just installed a C-Bear BB86 on my BMC Roadmachine with zero issues. Bearings runs as smooth as the Ceramic Speed Coated I've used in the past. The Token Ninja BB86 i tried was a disaster. The actual width of the Token BB is about 3mm wider than specified, making it impossible to fit a Rotor crankset, even without any O-rings or washers. The Token Ninja was harder to fit than the C-Bear and made some worrying noises during installation. Removing the Token BB damn near broke my tools.
You've used a cylinder honing tool now, but last time u used a jibilee clip with a fan thing. Which one works better?
So happy my bike has a threaded BB. That process would have had me pulling my hair out
Peer is a village in Flanders , province of Limburg,not in Wallonia. Ridley the bike supplier of Lotto team and André Greipel are also based in Limburg.
I've had C-Bear BB30 in my Focus and had no issues with it. Guess, I am one of the lucky ones.
Me too. It went into my S-works fine using bb30 cranks. I feel lucky too.
@@stevec6232 both , normal case
Less than ideal!
Great Easter egg!
I have a 2016 Giant Defy that I just started riding this year. It’s been been evaluated by the bike shop mechanic at least 8-10x for creaking and cracking noises coming from the bottom bracket. Can’t help but wonder that this is a defect that will never be fixed 😢
I've got a cannondale frame to send you. 500 miles on it and it's fkt. They won't replace it.
Cracknfale used to make ace aluminium MTB's in the 80's + 90's when they built them in house, shame how they have changed.
Once you get a good name the only thing to do is cash in on it until people notice you're making crap. Rinse and repeat.
Ahh yes the infamous Cannondale Snaps. Love that rough as hessian undies spin test.
That was crazy. I bet those bearings feel so stiff you could hardly turn them with your fingers.
Ive got a 3 decades old square taper Dura Ace track bb on my 'Crossafix' and the cranks will spin for over a minute. I don't ride it on a track much either.
@@rollinrat4850 I had a better BB on my beat up Hoffman bmx in the 90's and that was one hell of a yard stick.
@@rocnoir4233 Ive also got my rain beater/ pub crawler/scorcher. A '70s fixed gear Raliegh, saved from the dumpster. Its got the old cottered birdshead cranks. The bb is original. I installed zerk fittings into the bb. I think my seat tube is probably 1/2 full of grease, but this thing is still fairly quiet. Ive only rebuilt it once in 15 years when I put the thing together. My wheels on it are ancient Campy Record. Still silky and smooth.
How do you rate the Token Ninja pf30a to 24mm BB adapter?
A well deserved roasting engineering limits and fits are drilled into all apprentice engineers from day one !! So are these qualified engineers ??????..
Probably not, with a tolerance that bad, his only qualification must be in muppetry.
@3:26 isn't that going to scrape off all the anodising on the red cap?
Heh, I actually have one of these BBs installed. I do have a Hambini BB, but it couldn't be installed due to internal cable routing, so still have C-Bear in use...
What's your bike's brand, model and BB standard?
@@yonglingng5640 Ridley Noah Fast, PF30
17:40 Yeah right... you bought that to clean bottom bracket shells
Love the analysis and critique. But why weren't the bearings pressed out? Else use half moons for an even (tapping) force distribution.
the internal lip stops you knocking them out.
@@Hambini the hairdresser could/should've helped there. 😋
Do I guess c bear could say they made it to the cervelo specs?
Dude, when are you going to roast Time Scylon frame???
next week
I bet you measured the frame first and was surprised it was within spec.
I don't know. I'm on my 3rd Cannondale with a press fit and they have all been absolutely perfect. No issues at all.
I wager it was surprisingly well made into spec
@@DaveCM Have you actually accurately measured any of them?
I wrench in a high end shop. I'm a retired machinist and mechanical inspector. I keep extreme precision measuring instruments in my work bench. I can measure ID, OD and roundness easily. My tools are accurate within .0001". Most of these aren't uncommon or particularly expensive tools either. Simply micrometers and telescoping gages. Ive even taught young teen machinist trainees to use them. This isn't 'rocket science'! I also own much more expensive bore mikes and gage blocks, ring gages as well. Gage blocks and Ring gages are 'size standards' often used to calibrate instruments and verify precision measurement. These are regular and practical tools used in QC and QA inspection.
I've measured every pressfit shit bb shell Ive ever serviced. Some are very bad, some are a bit better. Some in between. None I've experienced ever met the industrial bearing standards Im aware of.
Ironically, Creakinfail invented BB30. Just about the worst pressfit shit 'standard' in existence. Just a few years ago, when a noisy creaky bike rolled into our shop, five times out of ten, it was a Creakinfail. Not a great stat!
'Discerning consumers' really need to find out what mechanical 'STANDARDS' truly are.
I KNOW what interference fit STANDARDS are. This is a matter of proven engineering fact. This data is in the machinery handbook. Bearing manufacturers provide it as well.
I'll never buy pressfit shit frames. Nobody's fooling me.
3 things that will negate my interest in any frame:
1. Pressfit SHIT BBs
2. INFERNAL freakin routing
3. Non round seatposts
YET, these are all examples of job security and proprietary garbage from my POV.
More complexity, more proprietary? MORE service, MORE sales, MORE PROFIT. I've gotta 'love that' !
To be honest, I'll probably never buy a plastic frame. I used to manufacture carbon aerospace components. ironically. Needless to say, I'm a perfectionist. I also realized decades ago that bicycles can be extremely simple, reliable machinery!! AGAIN, nobody's fooling me!
I encourage everyone to ignore marketing BS. Seek out fact in YOUR best interests!
Besides, my metal frames last indefinitely. My BSA and Italian BBs all last for decades. No problems whatsoever! I don't see the point in replacing any of this 'old junk' when it hasn't worn out yet.
But most importantly, Its the RIDER, not the freakin bike!
I can only think "Relapse" (of illness) when I read "Synapse". Lol
Last versions of Rotor cranks have big problems in design...the screws are undersized and either loosen, or make noise or require excessive maintenance until at some point moment...the miracle happens and they are quiet for a few months...