Carbon Durability Test #1

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This may be the most ridiculous video that I have done to day but it's certainly been the most enjoyable / Experimental. While these carbon stress tests are meant to mimi the real world somewhat... they are certainly not scientific. Either way it's interesting to see how much punishment these carbon bars can take. It's equally as interesting to see how the aluminium bars compared to the carbon bars! If you guys like the video then I'll do more with other bike parts to see how much punishment thinks like forks and frames can take.
My Website (In progress)
bikkerr.com
PS. When I provide a link here to gear or equipment I sometimes get a kickback from it. I am not a professionally trained bike mechanic... always check with a professional in the relevant field 👍

[@Grunge_Cycling]

Not applying the proper carbon paste and over-torquing the stem is definitely how most carbon bars fail.

[@floam11]

Nice video! Next time take some protective measures. You would have lost your hands, smashed your head or blinded yourself if any of those bars had snapped and the pulling gears came straight at you. Protective glasses, helmet and safe distance from destructive tests

[@markusseppala6547]

Or a safety tie like Colin

[@evangatehouse5650]

Except CF doesn't store a lot of energy because it's NOT elastic. The failure mode shown is very typical. Just "busted" with little movement. If you were using nylon rope to pull on it, (very stretchy), yes much more risk because it's a big rubber band.

[@TheBassallyear100]

definitely gonna need the torque measurements on "super tight"! great video, thanks for the time you put into this.

[@JourdainColeman]

Glad you enjoyed 👍🏽

[@Riazor1370]

About the dropping test, when handlebars fall down it carry the weight of : - The HB itself - The force of the moving bike before it falls down. - The bikes

[@bonbonflippers4298]

Its not the fear of carbon handlebars breaking, its the fact that you cant see the cracks under the bar wraps as it forms over time. How often do you unwrapp the bars to check for crack? Almost never

[@cocoray1000]

I way underestimated the strength of carbon 🙃

[@IDYLBERRY]

Thanks for all your effort producing test results. I think it goes above and beyond normal riding impacts.

[@JourdainColeman]

Cheers for watching 👌🏼

[@stevenleffanue]

Definitely deserves a comment! So much time and effort put into this vid. Not the most scientificly accurate tests but well entertaining. Onya Jordan 👍

[@JourdainColeman]

Glad you enjoyed

[@markusseppala6547]

Always read the instructions for your stem, some stems require to close the gap on the top. I ruined one carbon bar by torquing all the bolts and not closing the top gap.

[@mikedellar5653]

Brilliant production!

[@JourdainColeman]

Cheers

[@jetthepanda]

Love the DIY jigs, great content! Keep it coming 💖🔥Hope to see you on the roads one day 😄

[@JourdainColeman]

Cheers man... will do! 👌🏼

[@darringrey4329]

Old mate with the carbon sub could of used you as a consultant

[@MTBScotland]

over tightening clamps is what does the damage. That with crashes will cause failure make sure when you are doing the crane pull make sure the distance from the centre to the strap is the same.

[@schrodingerthecat]

Love these test videos!

[@engnelsito]

The strap test seems slightly unfair for the integrated carbon bar/stem, as at 15:50, the bar seems to be resting in the sharp corner of the wood beam of the gig, This is creating a stress point that probably help the bar breaking when and where it did. The aluminium bar was resting into the stem, so no additional stress point was created, apart from the interface between the bar and stem that was designed exactly for that purpose. In summary, in a completely fair test the integrated bar/stem would probably withstand a slightly higher load and the difference to the aluminium would be smaller.

[@MyRestoration1]

Hi chap. That is a huge undertaking to bring this excellent experiment to your audience. Where do you find the time?! A few comments ( sorry i am commenting from my private channel) : The stress test you showed on both carb and alloy bars its important that the straps are in the same place for both. The alloy got a bit of freer ride on the non-drive-side so you would possibly see a lower weight to distortion ratio from the alloy. Also the carbon bars are a good bit thinner in wall thickness discounting the weight difference for that size object so there is that to factor in. The main point to make is that for this intended purpose, even as a carbon guy, alloy wins in my book. Why? simply because of the way alloy and carbon break under pressure. A pure carbon bar will always fracture after it over flexes and like a house of cards, you go along with it. In most cases the alloy deforms a fair bit before it comes apart giving you a chance to sit upright and stroke your brused ego. It is the same with stems and crown races in forks. So it is not about which is stronger it is about which one gives the rider the chance to not face plant. Alloy is plenty strong enough for this purpose as your tests show. There is a rule here at CarbonBikeRepair - If there is 1 of anything keeping the rider from a face plant it is better made of a material which can deform rather than fracture first. Of course the speed and weight of an impact is a rule unto itself but some cyclists perception that carbon is better, because it is structurally 'stronger,' only tells part of the story. There is still a lot of use for alloy in modern carbon bikes. We tend to watch the baby being thrown out with the bath water in so many modern bikes we see come through our doors. Then there is this obsession with weight.. come visit us some day and I'll explain to your audience! Take care mate. Great honest channel for us all.

[@Propeler3D]

Awesome! I'm not afraid carbon bars any more! :)

[@scottmccann4509]

The pain/enjoyment of watching perfectly good parts being destroyed 😬😱🤣. Think you need a spreadsheet at the end, with all the test/results summary (which you can add too in the future)

[@sgrouts]

Great video! Carbon deep rim wheels next please!

[@JourdainColeman]

Noted! 👍🏽

[@AndyRides]

The first test rig. It doesn't bear thinking about what would have happend if the bars had snapped. Coming down hard on the stem/top of the tube would have been eye watering.

[@JourdainColeman]

It would have been a very different video 😂

[@stuartdryer1352]

The testing manufacturers do in order to be able to sell them in Europe are even more stringent. Just don't over-torque any bolts.

[@kihunpark8669]

I could imaging that in praxis, my fingers would be smashed first before my handlebar collide with a car or something😢

[@scherzo0o]

Stop pointless cruelty against carbon handlebars!

[@SamuelBlackMetalRider]

Genius content

[@JourdainColeman]

Cheers

[@raddiraddistki5824]

you could have redone the first test after the impact tests to see if the bars would then break. There can always be non visible cracks within the carbon layers after impacts. Other than that, thanks for your tests.

[@JourdainColeman]

Great suggestion!

[@ericpmoss]

OMG you positioned your chest and your crotch above a 1" post with your whole weight on the bars. That's nuts.

[@bertusbob]

👍👍👍

[@ellerybice3787]

Which pair of bars would be your choice for challenging a Bighorn ram to mating rights? 🤔

[@JourdainColeman]

Aluminium!

[@DaaamnGina]

Entertaining and I appreciate the effort. Things to improve is safety. Glad nothing happened, but I cringed at 15:19. I see you put on safety glasses for the sledgehammer.

[@lolipuni1]

Mjolnir!

[@Gryffes]

Fun video but please wear a helmet and safety glasses.

[@andreemurray7039]

Sadly in a crash my carbon bars snapped in 2 so gone back to alloy

[@Mike-oz4cv]

The same can happen with any material. You can get aluminium handlebars which barely weigh more than 200g and they are probably weaker than many carbon handlebars.

[@FirmanAditya13]

Next cheep carbon dropbar or crank

[@thomasschragen4446]

Lexon carbon crankset 🎉

[@laneromel5667]

Carbon generally fails with repeated compressive loading, causing delamination.

[@coliander4180]

Source?

[@ssenssel]

@@coliander4180 The Titan submersible

[@laneromel5667]

@@coliander4180 There are literally thousands of published papers on this subject, here is one "Effect of embedded delamination on the compression performance of carbon fiber reinforced composites"

[@Ravachol71]

Who won the Contest from the Last Video?

[@chrisdelaplante5515]

Nice man but be carefull please !!! Protect yourself, your eyes ! I was afraid for you all along !

[@Iskander-ve4bg]

please do it with frames!!!

[@speedy1490]

New Teeth are far more expensive then replacing youre carbon cockpit, keep that in mind. Yes most Carbon Bars can take a beating. But i wouldnt trust them anymore after one good hit. You cant always see the delamination.

[@MattRogersdesigns]

I think this shows that it takes a huge amount of effort and force to actually make a modern (even no-name) carbon bar completely fail. Your bars may crack, but it then takes lots and lots of repeated force to make it snap off. I had a separate carbon bar develop a crack at the steerer from overtightening and a defect so I did a strength test like this video. It developed a crack at same place as in this test, but I was unable to break the bar after seeing the crack. I would have been able to ride the bar home, and while I would not have wanted to do a 1000w sprint on the bar, It really was nearly impossible with my weight and strength to make it snap off.

[@Mike-oz4cv]

Pretty pointless test with a sample size of one and so many variables and bad repeatability. I guess it does show that handlebars (at least the 3 in the test) are quite strong and unlikely to break before your wrists.

[@GVGVIT]

3:10 - one man one carbon handlebar

[@JourdainColeman]

👀