Colnago C50 Repair Failure
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- Опубліковано 20 чер 2024
- This video shows a Colnago C50 classic frame that came in with a cracked chainstay. What we found was surprising to say the least.
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First video in 11 months I thought this channel was finished. Good to have you back
Maven will be uploading one next.
@@jasond3918 mad lad mavey.
Exactly! 😃 Where ya been Raul?
Been busy after having to move workshop.
@@LuescherTeknik hope you are well
Oooohhhh, *that's* what they mean by a "composite frame"
Guys on marketplace. "Yeah mate, nah, hasn't got a scratch on it"
Impressive paint matching though!
That's the problem with dodgy repairs, they are judged by the paint finish not the structural performance.
So good to see you back!
_"Let's see what we can do with this"_
... hoping for a follow up in the not too distant future :)
He’s back!
What a video to have you back with!
Good to see you back Raoul - glad that guy didn't "repair" the fork. :((
I’ve never been more aware of the possibility that my carbon head tube could explode or shear off than after subscribing to your channel.
Always interesting reviews.
Great to have you back on you tube.
Well thats a dog’s dinner of an attempted fix by someone . Great to see you back Raoul always appreciate your postings 👍😄
No, actually they knew what they were doing. It was a deliberate job at restoring funcionality to a limited extend. And it seemingly held long enough to outlast any warranties given.
Welcome back
Significantly less than ideal ...
Great to see you're still going
You've been sorely missed. Thanks to your scan and detailed report of my poorly made Lynskey carbon fork they begrudgingly sent me a new one. Thanks.
And they reckon some strange things happen in the Bermuda Triangle. Welcome back 👍👍
Expensive road bikes are the biggest industry Con going...For every 80 pro frames made for the Tour...they expect a failure rate of 10 frames...Carbon fibre is the only construction material that cannot be tested for its breaking point...because its so inconsistent ....This is why people like James Cameron who is a certified engineer...refuse to use it ...Also failure in the fork crown is common...leading to bad accidents !
"I've got a mate who's a welder"
Merci!
That is an absolutely Perfect job. Top repair. What on earth are you going on aboyt Raoul? 😂😂😂😂 it's a Steel frame with carbon bits stuck to it here n there....😂😂😂😂😂😅😅😅
Anyways I hope all is good with you mate. Happy to see you're still doin' them great Carbon videos. Cheers.😉
Unreal.
Actually, steel is real!
Gotta admire the thinking behind this:
“Oh its plastic, that’ll never hold up. Lemme just put in a steel tube instead. Much better for storing in the bike stand at the pub” 👍👍😋
Great to have you back, thanks.
Did you dig in to see how they blended the tube into to complicated carbon shape further up the chainstay?
that's rather grotesque.
compost$hit frames
Less than ideal
Incredible. Was that dropout originally a plug-end inserted into chainstay tube or did they cut right angle at a crack and "create" the male plug end with filler? Why would anyone make a bad steel splint when making a stiff, custom-fit CF splint (that wouldn't have rusted) was the simpler solution? I guess no CF and epoxy in the cabinet, just bondo and paint?
*A true **_hybrid_** bike !*
Does magnet “stick” to other chain stay ?
Oh my god.
Importer: "not a problem we will have your frame fixed under warranty"
Would be interesting to know the history of this frame, if the customer knew it was repaired, did they buy 2nd hand etc. Ive heard of some real dodgy stuff done at the factory even, like last years paint scheme under this years paint scheme etc.
Facebook marketplace special 😁
😂 that's a funny "repair"
Whoever 'repaired' that turned it into a death trap waiting to happen.
Isn’t fixing stuff like this more of a liability than it’s worth?
Some people are luddites and really attached to the frames they already have. There's also an elegance to repairing something, whether that's most resource efficient or not
So the tube should have been thinner to match the stifness an not create a stress raiser nearby. Also wonder how long was it since that repair.
Not really, it failed at the poor bond prep, as shown by the rust at the interface.
@@LuescherTeknik hasn't it started with cracked dropout? While debonding occured only at disassembly
No, the crack was at the dropout to steel tube bond DUE to the poor bond.
@@LuescherTeknik so the crack wasn't even in the main body of the dropout? Well that changes everything!
That's very scary. Can't imagine riding that bike when something went wrong, disaster.
That is unusual. I wonder if it is worth repairing, maybe for sentimental value.
CoMpOsItE
I wonder how the bike felt while riding. One side carbon, one side steel, must have felt awkward!
Wby do this when the proper repair takes the same effort?
One of the more unusual ones!
What have you seen that's more "unusual" than this?!?
Someone "repaired" a seat tube crack with an aluminium tube, until it corroded from the inside and swelled up causing more cracks and a hole in the frame!
Where's the yellow marker? Nah, it's not needed here. Wow! A botched job straight out of dodgy 1970's car repair efforts.
It's beyond #raoulsyellowpencil
Oh wow he should've used a ti tube if not carbon
Nah, it'll be fine 👍
No drama - just machine an equivalent steel dropout and weld it to the rest of the steel tube.
I take it that you scanned the none drive side just to be sure..
I just ran a magnet over the rest of the frame!
Always buy the seller.
Mate, that's less than ideal. WTF. 😂
Maybe they were "thinking" that if orthopedic surgeons can fix peoples broken bones with surgical steel / 312L or titanium screws, plates and pins then.......
Looks to me like a good repair idea, ‘just’ poorly executed. 😁
Oh no carbon fibre
Justr a paint crack.
Right, that's criminal, isn't it?
Maybe this was the best someone could do before they would throw this away, or perhaps someone paid a full price for this who knows. It was still holding up when it reached you no? Not saying it's good work, but kept it going until they found someone better.
No, the bond at the dropout has failed and the dropout was loose as shown, it was rusty and I could just pull it out.
Back in the day, Colnagos had steel frames & forks. Maybe the repairer was just harking back to Colnago's roots?
You can still get a Colnago Master X Light frameset, including the old Mapei colourway in lugged steel, might have been cheaper……
@@kevinriseborough1521 Thanks, brings back memories of when I began racing in the early '70's. On the start line on my lowly Peugeot PX-10 totally intimidated by guys on beautiful Colnago's, Masi's, DeRosa's, etc, figured I had zero chance. Wondered why they were nowhere to be seen in the bunch as we sprinted to the finish line (Novice races were too short for breakaways even if we had known how to break away). An epiphany when I finally figured out after 4-5 races "it's not about the bike". Armstrong was right about that part at least. Eventually upgraded to a Schwinn Paramount, fairly plain so I didn't get the idea that my bike was so beautiful I didn't have to pedal.
That explains why people love the ride quality of C50/60 frames… they are steel bikes! 😂
Yes I’m joking.
🤣🤣
The 2nd greatest Aussie after Mark 'Chopper' Reid. 👍
And this is why I will never own a carbon frame. Carbon frames are dangerous for bicycles regardless of cost/manufacturer. A steel or alloy frame will generally give waring signs before complete structural failure, cracks/creaking etc.
How many used carbon frames hide a multitude of sins behind a lash up paint job. And that's just the parts of the frame you can see!
all carbon frames are crap
🤦♀🤦♀🤡🤡
Just scrap the frame. Can always buy another.
Less than ideal
Less than ideal