I Cut High End Pinarello Forks in Half… Here Is What I Found!

[@veloconfort]

Finally seeing the inside bike components! Amazing information. Thanks for sharing such great content

[@JourdainColeman]

Glad you liked it!

[@glennoc8585]

It's also the different types of carbon in the lay-up. Some use several different weaves to get weight down whilst maximising strength.

[@aaron___6014]

You think there is a difference that is significant?

[@aaron___6014]

From what I've seen the majority is UD and the exposed layer is a weave. Maybe you mean different types of fiber.

[@glennoc8585]

@@aaron___6014 older bikes had the weave like 3k mostly on the outside but some so many use UD on the outside now. The UD wheels are lighter than the 3k matt versions

[@ariffau]

Congratulations Jourdain! You’re now the Rose Anvil of carbon bikes 😂

[@janvanrookhuijzen8309]

Does this squeeze test make any sense, since in that direction the fork will be stiff as a brick as soon as you put the wheel in?!

[@cjohnson3836]

Yes. Just because they squeeze in the direction our hands work doesn't mean it won't also flex outward. Hammering into a turn the forks are going to flex in the same direction

[@janvanrookhuijzen8309]

@@cjohnson3836 given the crown of the fork is extremely rigid, with the wheel attached its basically a triangle. Also on a bike youre leaning in a corner so the forces come relatively straight in the fork. It would try pull in the direction of the frame to test the stiffness for hard braking. Here an flatter aero tube can be more stiff. Also you want some damping characteristics so the fork doesnt vibrate while braking hard.

[@hectorkidds9840]

Not really, the fork is a cantilever with force acting forward/backwards. And as you say, the front hub is part of the structure left/right. Normally, the front wheel is trying to move away from the bottom bracket due to head angle and fork rake, but as soon as you use the front brake the hub is getting forced back towards the bottom bracket, forks work hard.

[@janvanrookhuijzen8309]

@@hectorkidds9840 that's exactly what i mean. The direction you describe is very relevant. The direction of this squeeze test is not.

[@cjohnson3836]

@@janvanrookhuijzen8309 Forks are more than crowns. Fork flex + spoke flex +rim flex are why you have tire clearances. To say a fork, esp an under built one, doesn't exhibit lateral flexion is idiotic and ignores most of bike history. More, your braking scenario completely ignores disc brakes and torsional forces.

[@Velo757]

I'm loving this series of videos!!! Also cool to see one of my comments on screen at the beginning!!! Super cool content so keep it up! Thanks brother!

[@JourdainColeman]

Glad you enjoy the series. I have a few more in the pipeline and some ideas exchanged with Rob for future series as well. 👌🏼

[@Velo757]

@@JourdainColeman that sounds good and I'm definitely looking forward to seeing what you guys do together!!!

[@GCPerformance18]

Damn Phil swift over here just cutting everything in half🤣 good videos!!!

[@JourdainColeman]

😂

[@JohnA27]

Love the content, its not destruction, it's 'reverse' or as they call over the pond 'back engineering.' Why do you think all that new tech came out after Roswell. (come on Johnny, we're not getting back down that ol Dulce Airbase fox hole so soon) lol. Keep up the great work dude.

[@ДимаСадовников-в6с]

Если не лень загугли как лисы роют норы.они их не роют.они заселяются в барсучьи норы и срут там.барсук животное чистоплотное и уходит из норы.

[@tomrachellesfirstdance7843]

I would have thought the thickness of the trifox is because it's a disk brake bike and they need the additional thickness for twisting forces when you brake. The rim brake pinarello would not need as much on the legs but maybe as the front rim brake may need additional carbon at the front of the crown?

[@JourdainColeman]

That's a good point. I need to get my hands on a pair of high end disc brake forks and compare to them. 👍🏽

[@tomrachellesfirstdance7843]

@Jourdain Coleman with how much bike prices are going up....Good luck 😂 unless you are going into the bank-robbing business 😉

[@cjohnson3836]

@@JourdainColeman There's more than 1 way to create stiffness, or in this case resistance to torsion. Thick walls is one, but the other is geometry (and probably why that Trifox disc fork was thicker in diameter and had that peaked outer surface). Even if you can't get forks to cut up, all you really need is someone with a high end fork you can take some measurements on. And assess the shape.

[@afonic]

Amazing! Thank you so much for these videos! 🎉🎉

[@JourdainColeman]

Thanks for watching!

[@tweed0929]

9:44 the thickness unevenness, though...

[@glennoc8585]

Lack of uniformity on the steerer and it looks very thin in a section

[@cup_and_cone]

I'd say that taper is by design. It's only thicker up top because that's where the upper bearing race seats and stem clamps, so it has to handle compression and point loading. Inbetween the upper and lower headset bearings it can be thinner to save weight.

[@larryt.atcycleitalia5786]

I wonder why so much is made about how hard it might be to squeeze the fork blades together when at the very least there's a hub/axle clamped into the ends with a Q/R when the thing is in use? If that's properly installed that flex when you squeeze the blades together wouldn't seem to matter? With a thru-axle the entire assembly would be even stiffer.

[@nicokop7078]

Interesting video, thank you so much so these videos!

[@JourdainColeman]

Glad you enjoyed the video

[@felixmann7003]

Wasn´t the yellow fork a cannondale fork, not a canyon one ?

[@JourdainColeman]

You are correct! my mistake 👍🏽

[@galenkehler]

Comparing a rim brake fork to a disc brake fork like this is a bit disingenuous. Of course the trifox fork is going to be thinner where the brake isn't! It doesn't have the braking forces, compression from the bolt or any of the same loading.

[@JourdainColeman]

Yeah, as I said in the video It's not like for like. Ill be getting my hands on some disc brake forks soon hopefully. (If I can find some)

[@hash-CCFF00]

@@JourdainColeman did u find anything

[@ianturpin9180]

With aluminium and carbon fibre in wet conditions you get a galvanic reaction.

[@gregschramm8180]

Nice but it still was painful to see but fun and insightful

[@JourdainColeman]

Glad you enjoyed

[@simonsepic]

Ah man can you like sell me a carbon frameset lmao you must be able to get one mega cheap for a fellow uk rider haha

[@qingshengpeng6524]

8:07 there's a huge thin piece that I would call a sub-quality product. The carbon line even broke there

[@JourdainColeman]

On the left hand side, i think I see what you mean 🤔

[@andre-louw]

No one ever takes about the differences in the carbon fabric between the products in question, neither the difference in the resins used. much is left to assumption and speculation.

[@hjvveight4074]

I cut £15000 ebike in half ,know what i found ITS NOW IN TWO PIECES NOW ITS F@@@@@

[@7HH]

I just hope your wearing mask to cut carbon. Great video thanks

[@cjohnson3836]

We need to start banning people who make this comment. As if the last million times wasn't enough.

[@7HH]

@@cjohnson3836 yeah i hate when people dont understand...

[@JourdainColeman]

I have a premium mask with filter system 👍🏽

[@7HH]

@@JourdainColeman cool bro. Ride on!

[@CrapKerouac]

Have we learned anything about the recycling of carbon?

[@tweed0929]

Nothing. At this point in time it is practically impossible. Carbon parts go to the landfill.

[@Mike-oz4cv]

An average first world citizen sends more than 100kg of waste to the landfill every year. This number does not include cars or construction waste.

[@JourdainColeman]

It makes me sad, the best reuse is to fi them instead of chucking them away. I do my bit, no car and minimal living but these carbon frames are my downfall.

[@MA_808]

Pinarello racing bikes have had a poor reputation for a very long time. It was not unusual that another brand custom bike was painted PInarello and used as team Pro racing bikes. There are likely a few people out there who think they bought a team PInarello bike but it may have been made and painted in a custom shop in Southern California then sent to team riders everywhere

[@larryt.atcycleitalia5786]

But of course you can't name any names or provide any examples to back up this claim so it's worth.....who in SoCal is making them?

[@MA_808]

@@larryt.atcycleitalia5786 this was a long time ago back in the 1980s and 90s and it to do with lack of access to advanced and very expensive tubing in those days in Italy because of the exchange rates of those eras...I should have explained it and also my comment was from the past. .. I was in the racing, management, and tech side of the business for a long time...and my comment is meaningless now...I apologize for offending you...and I do remember Italy very well in those days and some places were very depressed...

[@larryt.atcycleitalia5786]

@@MA_808 Since it's long ago why can't you name names now? Columbus made some damn good tubing in the 1990's IMHO. I dunno anything about Pinarello but if you're gonna slime them you should offer up something more than an unbacked-up opinion, no?

[@MA_808]

@@larryt.atcycleitalia5786You love gossip, dont you?

[@mracer8]

@@MA_808 NO, we like the truth backup with fact! not gossip which you just post as fact!

[@brucewayne964]

The quality of the carbon is very important....carbon is'nt carbon.

[@yspegel]

It's all great stuff but to hear MrCarbon expert saying everytime: This is what you pay for is a load of bullcrap. Aerodynamic bike frames in general are very underdeveloped while asking the big price like it's F1-team designed. This is the bare minimal you expect from a bike manufacturer for the asking price: that the material they used to build with is used correctly. The fact that we need video's like this underlines what poor conditions the bike market is in: most people don't trust their bike is made well just for safety, let alone performance.

[@GR-kt4le]

C|ickbait title

[@PavelBarbanegra]

So you compare the stiffness of the rim brake -specific fork to the stiffness of a disc-specific fork, they differ (as they should, because the loading profile is different), so you call one worse than the other. Wow. Talk about comparing apples to oranges...

[@geik2]

How in the world are we supposed to trust you. You don't even use the required protective equipment when you handle carbon. "experts" in a backyard workshop who know everything about most things. Sorry, but its not that easy.

[@isevo]

Nice toxic carbon dust is spread into the air while cutting through it

[@pbn111]

Thanks for your interesting videos cutting up frames & stuff. Just one comment, I haven't seen you or your workshop guy wearing a mask when cutting up the frames. it's your life, but cutting carbon without a mask is a very very bad idea. It'll get into you lungs and is highly cancerous.

[@cjohnson3836]

He literally said it in another video Dad. You people are annoying.

[@JourdainColeman]

I have a premium mask with filter system 👍🏽

[@joedizzelfoerizle]

I've been looking for one of these as a back up. 🫣