/r/bustedcarbon
All your busted carbon goes here!
Post your pictures and share stories of busted carbon fiber. Preferably bikes and bike parts, but all busted carbon is welcome!
This is also a place to ask for advice for repair or if you think your carbon fiber parts might be damaged.
All your busted carbon goes here!
Post your pictures and share stories of busted carbon fiber. Preferably bikes and bike parts, but all busted carbon is welcome!
This is also a place to ask for advice for repair or if you think your carbon fiber parts might be damaged.
/r/bustedcarbon
3,154 Subscribers
Carbon frame damage from a kickstand mount, how bad is it?
Hey guys, I've got a hell of a story to tell you.
My very rich uncle got himself an e-bike - BMC Fourstroke AMP LT THREE (https://bmc-switzerland.com/collections/mountain-e-bikes/products/fourstroke-amp-lt-three-bikes-bmc-24-10204-002).
Now, the sad part is he just got the most expensive bike he could find and never even used it!
Unfortunately, he kept it in his garage for over a year and kept adding random gear to the bike... And yes, he did try to convert this trail-racing e-bike into a... city e-bike
So, I can buy the thing right now for literally half the price. It's never been used. I tried it out, and it's amazing.
But I've got one big issue with it. I managed to get rid of the bicycle basket, four different displays, and the silver bicycle bell, but when I removed a cheap kickstand, I realized the frame is scratched where it was mounted. I've never had a carbon bike before, but I assume that's rather bad, as I can feel the fibers when I touch the area.
So my question is... Is this something I should worry about? How serious is it? I won't lie, I'm rather lightweight (70 kg / 154 lbs), and I won't hit the bike hard, but if the frame is damaged, I wouldn't want it to break or something while biking down a mountain.
(I wouldn't even worry at all about this scratch if it weren't carbon, but I read a bit on the topic and got a little paranoid.)
00:29 UTC
Busted Campagnolo Bora Ultra 45
Attacked by a pothole, unfortunately, 4 week old wheels ruined by a spot of bad luck.
01:09 UTC
Brand new bike cracked?
I purchased a new bike today at my local shop. When I arrived home I noticed a weird bump on the left of the seat post, where the clamp is. The right side does not have the bump and it's perfectly smooth (see pictures).
Is this a crack? If yes, how did the guy fitting me on the bike not notice it? It seems they deliberately ignored the issue to get rid of a damaged bike.
Edit: forgot the pictures.
04:21 UTC
Chip and a line on carbon
Was replacing a pedal when my Allen wrench accidentally slipped and hit the top of the downtube. Chipped the paint and created this line. Thoughts?
09:47 UTC
Carbonwheels with a pulled spoked
#spokes #spoke repair #carbon #fiber
13:27 UTC
Middle of top tube cracked during ride, manufacturing defect?
00:40 UTC
About to Buy a Bike
What do we think
10:36 UTC
Rock chip on new-to-me ENVE front wheel.
Was pace-lining and had a rock kick up and hit the front wheel. Disc brakes. Size about the size of a grain of rice.
I was able to finish the ride and wheel/tire still holding air with no issues. I emailed ENVE already but wanted to hear from the Reddit experts.
20:11 UTC
Chain drop
2nd ride on the new bike… is this just cosmetic?
01:55 UTC
Paint? Carbon?
Opinions please - I have an Email in to the manufacturer, and will have a guy at the bike shop take a look as well, but what's anyone's opinions on these pictures? Noticed this "crack" or "mark" today when I cleaned up my bike. Did the coin test and it passes. I am the original and only owner, bike has not been crashed, and has not had any impacts that I am aware of. Area is on the seat tube, non-drive side, about 1 to 2 inches down from where the seatstays join the seat tube. Bike is a Pinarello Dogma F12.
Have also been looking around for carbon repair options depending on what is discussed at the shop.
01:30 UTC
Paint damage or carbon damage?
Giant TCR dropout.
07:40 UTC
Is this repairable?
Being serious now, what is the best/strongest/lightest replacement. I’ve heard there are many very good hoops out there now that offer a good warranty & crash replacement. What are those brands/models? Is there anywhere else I should ask?
19:48 UTC
Carbon Seatpost Indentation
Carbon seat post shows mark from screw due to incorrect assembly. Asked a bike shop mechanic for help, he looked at it and told me it was fine, but to be extra safe I should keep an eye out for any changes in that area.
It does not make any strange noise or slip (carbon paste applied). It also passed the sound and flashlight "test".
For peace of mind I will probably replace it but I was hoping to get a second opinion from you, if that is even possible based on this picture alone.
Thanks in advance.
14:53 UTC
Chain came off, how worried should I be about the damage?
My bike is quite new but the chain came off and got jammed. I managed to unjam it, but now I am worried if this is only surface-level damage or if I need to get it checked out professionally.
Any help is appreciated.
10:51 UTC
This ol' frame right here...carbon damage or paint damage?
Would you think this is bad carbon or chipped paint? "Coin tap" test sounds ok (always thought of this like some shade tree mechanic test honestly, but...).
Obvi, a Cervelo, P2 model so beefy in the seat post, beefy in the downtube and the top tube junction to the head and down tubes. Would you ride it? I'm into it cheap enough where I wouldn't be sad if I stripped it for the parts and hung it on the wall; also cheap enough where if it was carbon damage a repair wouldn't be an upside down investment honestly.
20:19 UTC