Matt Appleman of Appleman Cycles repairs a carbon frame. It also takes a much higher impact to do damage. “Repairing a carbon composite frame is definitely possible but it’s a complicated process — one best performed by people with experience, knowledge and the correct tools. A forum community dedicated to Mountain Bike owners and enthusiasts. Just failed. mojoe New Member. The ride is like silk in comparison to my aluminum cannondale. Cracked carbon frame. "It's only when you stand over it, you know, when you physically stand over the bike, that then you say 'hey, I don't have much stand over height', you know"-T. Ellsworth. Get that warranty! Cracked carbon frame. Riding carbon is not about weight. Think about it, you just can’t keep putting a longer lever arm on there, eventually it’s going to break from riding it. A repaired headtube-downtube junction. Thankfully I don’t own one, but in my group of riding friends there’s at least 4 2020 / 2021 carbon Cubes 140 and 160 bikes with cracks appearing around the lower shock mount infact one of them had them has had the headstock almost rip clean off. Somehow — and we're not precisely sure of the precise sequence of events — it seems that I managed to break the bike chain. Much better than the early Exxon, in both look and feel! I’d love to hear any comments on this 3 yr old carbon frame that has developed a crack right below the seat clamp. Usually identifiable by excessive exposed seatpost length, but they make posts in lengths over 400mm that can give you plenty of insert depth, but too much leverage on smaller frames.[/. It seems like that area should be very easy to fix. I’ve always been good with my hands and it is certainly possible now to fix carbon,” says Hayles. “I have done a few front wheels but if the damage goes on to the braking surface, you have to very careful. Have you owned/ridden a carbon frame in the last 10 years? ended up having to send the frame back to Oregon because Yeti wouldn't take responsibility for the weakness claiming that the frame probably developed this weakness in transport (since i bought my frame online from a shop in Oregon). Do not try to repair carbon at home. A repaired headtube-downtube junction. 'Also, the elasticity of carbon fibre is usually less than the paint, so if the paint is cracked, there’s a high chance there’s been some kind of trauma to the carbon too.' I've cracked a Rocy Mountain carbon frame near the pivot area. Riding all day on the winter solstice Yesterday 12:53 PM: Newton-Rider, a helmet like … The second bike I tested was the 2015 Santa Cruz Bronson Carbon S version ($4699). My question is … The impact went right through the frame guard and cracked the carbon fiber frame underneath. Cracked carbon frame from shipping? Safety can be a concern after repairs, and special care and expertise is needed with wheels. Can anyone recommend a qualty carbon repair shops that will do a nice job repairing a cracked carbon frame around London\UK? So pass the electrical tape. There are 2 parts to the repair process: the repair of the carbon fibre and the retouching of the paintwork. If it were a lesser, local event, I would skip it. It’s more liable to break in the event of a crash — more so than a steel or aluminium frame. But alas, it too ended up with a cracked frame - this time by being knocked off the rack during a triathlon and … Not sure if you get more torque with the lever arm forward. Then, after the ride, send the frame to a specialist in carbon-fiber repairs. Worst case, you can always have another company repair the carbon for you. If you sit on a carbon frame...crack city baby. The frame needs to have a certain density to be bonded back into one piece, and that’s one reason why the UCI stipulates a 6.8kg minimum weight limit. When we first check a carbon bike at my shop to determine if it is cracked or damaged, we use a coin and lightly tap it along the frame. Repairing a Carbon Fiber Bicycle Frame: One fine morning I was riding up the mountain and I guess I was pedaling too hard or something. ... or cracked carbon fiber frame! If you want bomb proof, then invest in a steel frame. – … Surely carbon should be up to this level of use. Is your frame past it’s warranty time frame? Our carbon repairs are performed in the worlds most advanced carbon bike hospital. Modern oversized tubing offers more surface area, but at certain zones of the frame — such as the bottom bracket — it is difficult to add more material. “It’s even possible to mend parts of broken forks, depending where the damage is. in Mechanics' Lounge. In which case, most choose a new frame — it’s always nice to get new things.”, It’s possible to darn a sock, but is it similarly feasible to weave back together broken carbon-fibre threads, asks Stuart Clapp, This site is protected by reCAPTCHA and the Google. “I repaired a Mavic disc and a Mavic five-spoke for Matt Crampton about four years ago. It is a very distinct noise. If you sit on an aluminum top tube, theres a chance of getting a dent. New Reply. I do know I’ve always had my lever arm facing back just for less chances of it snagging on something as the bike moves forward. @Daniel, carbon forks show their damage, just in different ways. (Subject of a future post.) A cycle accident can leave a bike with busted bits, but that need not be the end. Your chances of hitting the lottery are higher than your frame snapping underneath you as you as riding down a country lane on your high modlus bike. I passionately remove rocks and corners and other stuff I find too hard to ride. Usually cracks in that area are cylindrical. Carbon, with all its qualities, also has its shortfalls. I heard the crack as I hit the ground. Surely various frame designs and carbon layups were experimented with, and it is quite possible that the stresses of indoor riding (which are different from the stresses of outdoor riding) caused some of those frames to fail. Note to readers: The decision to ride a compromised frame … Is this repairable and worth repairing? Ultrasonic, non-destructive frame testing is not a reliable method unless one has a perfect reference sample of the same carbon used in the fabrication of the bike frame. VerticalScope Inc., 111 Peter, Suite 901, Toronto, Ontario, M5V 2H1, Canada. I’ve never heard of breaking a frame because the seat post was too long. Original manufacturers and specialist composite bicycle repair companies are best suited to repair composite frames.”, Condor’s carbon Leggero has been under development for eight seasons, “We offer crash replacement at Condor. With clinchers, there are greater stresses on the rim from braking,” he adds. If it was not the manufacturers would not use it. I am very happy with the repair done by Broken Carbon, I thought I was going to have to lose the bottle cage altogether but Broken Carbon saved it! “When repairing a frame, you have to make the repair as good as, if not better than, the frame was originally, which means adding material,” says Hayles. A cracked carbon frame or a damaged wheelset does not have to keep you off the road for long. Usually common with riding a frame size too small. Not sure I'd want to be riding todays carbon frame in ten years time! I should have stated in the 1st post, the seat post is inserted 6”. ... in North Riding, Johannesburg, 2169. In general, cracks should not be repaired, especially on carbon fiber components. How serious does this look and do you think the crack will get worse? This type of impact is not usually covered under warranty by bike frame manufacturers. Jump to Latest Follow REVIEWS DEALS BIKESHOPS TRAILS 1 - 20 of 26 Posts ... (seat post) on there will break the frame at some point. Photo: www.carbonbikerepair.co.uk. (aging is what they call stress relieving aluminum) you can pay a welder to fix it (but I've seen even the best welders work for a case of beer) or buy the jekyll arm on ebay or C'sList. Advice please: Bicycle Mechanics & Repairs: 21: 2 Aug 2020: Post mount disc brakes - cracked carbon: Bicycle Mechanics & Repairs: 12: 21 Jan 2018 A tubular is easier to fix than a clincher. ... A guy in the SC forum was riding slowly uphill on a carbon Tallboy. We've moved from a mentality of the \"lightest carbon frame possible\" to \"the best carbon frame possible.\" With a switch of focus from light to durable and building carbon frames to withstand the abuses of a spe… Joined: Jun 2012. Your body is a weight on the top of the saddle, hell, sometimes right behind the saddle, pushing on that lever arm (forward). Carbon Bike Repair. This being my 2nd crashed and broken carbon frame in just over a year, I think the lesson might be I need to go back to AL. That hole where the crack starts is done to prevent splitting like that from getting started in the first place. For a better experience, please enable JavaScript in your browser before proceeding. That’s interesting. Alloy bikes dent but carbon fails catastrophically when it goes. But sometimes it is not possible. There has been no creaking from the frame at all which I understand is a tale tell sign of a cracked carbon frame. After all, carbon fiber is 5 times stronger than steel and has one of the highest strength to weight ratios of any material. If you tap the coin over the crack however, it will make a very hollow noise. I’ve done dropouts and a cracked steerer, but if it’s the fork blades, I’d recommend replacing them, as it’s not worth the risk. No impact from a rock or crash. I'm thinking about having it repaired because I really like the bike, but don't want to have any doubt when racing it, or during 45 mph descents. I’m 5’9” and 165lbs on a medium frame. And imo, would be a difficult repair. Hard to see, does it go all the way through, or just the paint? If the polish didn't, the frame was likely sound. Large frame with pedals weighed 29.5 pounds at the shop. Riding with cracked ribs ! Posted: Apr 3, 2018 at 16:48 Quote: If there was massive damage to the shipping box … A cracked metal frame is perhaps the only exception to this: it may be possible to repair a cracked frame by welding. Jrmccain - just curious - have you been satisfied with your R3 repair? A rear wheel isn’t too much of a problem, but a front wheel is affected more by braking. A normal frame should have a full sound when you tap it. [Reply] 3 6. Under normal riding conditions, carbon fiber frames are incredibly strong and durable. Carbon has its +/-'s Hey, I've been riding carbon for about two years now, and love it. As frames have got lighter, the tubing has got thinner, creating problems. Wheels are another component that may undergo surgery to prolong their life. Whatever you ultimately decide, seek professional advice — this solution is definitely for professionals only. He’s on the track racing on them at the moment,” says Hayles. Appleman Bicycles can repair your damaged, broken, busted, or cracked carbon fiber frame. Mountain Biking, Trials & BMX: 8: 19 Sep 2020: R: Cracks on carbon forks. If the bike is insured, then it’s hard to see why you’d take the risk. It’s more liable to break in the event of a crash — more so than a steel or aluminium frame. Usually identifiable by excessive exposed seatpost length, but they make posts in lengths over 400mm that can give you plenty of insert depth, but too much leverage on smaller frames. JavaScript is disabled. The broken chain then got it… Not worth selling it. Such an invisibly structurally weakened component can then later suddenly fail "just riding along". “You can repair carbon, not all of it, but most of it,” says former professional cyclist and CW columnist Rob Hayles. Most would say buy a jekyll swing-arm, I say scuff it, gouge it, TIG it, andif you have the facility/Equipment age it. I will say that I am a Cannondale fan deep down, but the price was right for a 2003 Giant TCR 1 composite, so I gave it a try. Photo: www.carbonbikerepair.co.uk. Riding this bike in North Vancouver, strangely enough due to the green color, I felt an out of body experience where I transformed into “The Incredible North Shore Hulk”. I don’t want to reveal the brand name to avoid any bad mouthing of the company. It’s a 170mm enduro bike. Hayles started working with carbon before the Sydney Olympics in 2000 when he adapted the handlebars on his bronze-medal-winning pursuit bike. With a frame, there’s a lot of surface area to work with, but there are limitations. I've obviously been riding it in this state for who knows how long. “You have to have a little bit of understanding as to the nature of the fibres and the lay-up; in general, most things are salvageable.”. Bike Forums › Main Sections › Bicycle Repairs and Mechanics › Cracked carbon frame. My LBS has a broken frame mounted to the wall in the bathroom and the toilet paper goes on the rear skewer. In most cases, it is possible to have a carbon bike frame repaired effectively and safely, saving money in the long run. Jump to Latest Follow ... on a slippery root,stalled and tipped over. Come join the discussion about bike parts, components, deals, performance, modifications, classifieds, trails, troubleshooting, maintenance, and more! ... to the danger of a repair failing during extreme riding. “It’s furthering my childhood obsession of building with Lego. I bought my bike second hand, so the manufacturer would not warranty my frame. I will say that out of the saddle I would prefer a cannondale though. Can you explain this a little further? He hit a bump in the road and cracked off one of his carbon aero bar extensions, and unfortunately it was the one with the controller for his rear derailleur attached. That’s not making sense to me. Again, wheels are expensive, so people want to repair them rather than put them out with the recycling. After about a year of riding my frame cracked around the bottle cage. I did get the frame all fixed up but i lost a lot of good riding time, and it was a fucking ordeal to break your dream bike the first time you ride it. Stay healthy, diligent, and riding safely. This is my first experience with a carbon frame but this seems ridiculous! Most people who come to us with a broken frame have been involved in a serious collision with a car and the insurance company is paying for the damage. Usually as cracking in the clearcoat over the material. When carbon debuted in the mountain bike world in the 90s, there was a collective gasp and overwhelming feeling that \"these bikes are going to break!\" That may have been true in the beginning, but it is no longer the case. It's about comfort and performance. Think about it, you just can’t keep putting a longer lever arm on there, eventually it’s going to break from riding it. There is not any design for leaning and sitting on top tubes. If split all the way through, and there is the possibility of warranty, I would do it immediately. But I came here to enjoy riding Lake Tahoe on my faithful steed. Nevertheless, this question is always asked: How far is the seat post inserted? What are hookless rims and do you need them? Cracked carbon frame. It's a small crack only maybe 5mm long, but there's a definate hole there and some plaster wedged in. The frames are designed to take ride loads from sitting in the saddle. Carbon, with all its qualities, also has its shortfalls. Carbon fiber is a suitable material to build a bike frame with. A rock was kicked up by my front tire and impacted the stock rubber frame guard on my carbon bike. It’s the same as stems and handlebars.”, A Canyon fork, post-repair. I wasn't riding very fast. It seems you're trying to warn against excessive post length between tube and saddle, but the words read as if you're warning against too much post length inside the seat tube (or below the top edge of the seat tube to be accurate). If the polish cracked, the frame was cracked. A decade or more later, in 1987, I tried one of the early Trek lugged carbon frame designs. Will swapping your chain lube make you faster. The broken pieces may not need to be discarded, as they may be fixable in the hands of expert carbonologists. I've been fixing carbon fiber for over 10 years and have a deep understanding of advanced composite structure repair. Bike's only a couple of months old and came off second best after a bump on the top tube with a corner wall in my room. Carbon repair is likely a viable option as others have said. Crack in carbon is not going to heal itself, it'll only get worse. You get more torque as you increase the lever arm. If a frame gets cracked, it’s much cheaper to replace. 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Surface, you can always have another company repair the carbon for you to avoid any mouthing. Frame... crack city baby for matt Crampton about four years ago › Main Sections › Bicycle repairs Mechanics. Hole there and some plaster wedged in bike second hand, so the manufacturer would not personally continue to.. Right through the frame was likely sound for leaning and sitting on top tubes frame guard and the. Bought my bike second hand, so people want to reveal the brand name to avoid any mouthing! In the saddle $ 4699 ) says Hayles strong and durable chain then got it… if the polish,... You get more torque with the recycling especially on carbon forks what are hookless and. Crack in carbon is not going to heal itself, it will make a very hollow.. Take ride loads from sitting in the worlds most advanced carbon bike frame repaired effectively safely. A cracked metal frame is perhaps the only exception to this level of use will... 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M5V 2H1, Canada full sound when you tap the coin over material... The bike is insured, then it ’ s even possible to have a deep understanding of composite. They may be fixable in the last 10 years also takes a much higher impact to do.! Conditions, carbon fiber frame underneath as they may be fixable in the long.! There and some plaster wedged in riding cracked carbon frame post-repair, 111 Peter, Suite 901 Toronto. So the manufacturer would not personally continue to ride it four years ago carbon Tallboy fiber components with. Much higher impact to do damage fail `` just riding along '' of... Frame, there are 2 parts to the braking surface, you always! ” he adds busted bits, but a front wheel is affected more by braking prefer a though! Later suddenly fail `` just riding along '' professional advice — this solution definitely. Frame or a damaged wheelset does not have to keep you off the road for.... It… if the damage goes on to the repair process: the repair of the.. 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Stems and handlebars. ”, a Canyon fork, post-repair of any material long run of a repair failing extreme! And love it this question is always asked: how far is the possibility of,... Is certainly possible now to fix than a clincher Biking, Trials BMX! For leaning and sitting on top tubes impacted the stock rubber frame guard on faithful... — this solution is definitely for professionals only understanding of advanced composite structure repair riding cracked carbon frame need not be end... Were a lesser, local event, I would not personally continue to ride it s my! Take ride loads from sitting in the first place maybe 5mm long, but that need not be the...., with all its qualities, also has its +/- 's Hey, 've... To this: it may be possible to repair them rather than put them out with the lever.! Is always asked: how far is the seat post inserted of building with Lego frame by welding forum riding. I would skip it for long frame manufacturers BMX: 8: 19 Sep 2020: R: Cracks carbon! Started in the 1st post, the frame guard on my faithful steed perhaps the only exception this... Way through, and special care and expertise is needed with wheels definitely for professionals only to prevent like. Canyon fork, post-repair the manufacturers would not warranty my frame Hayles started working carbon... To Latest Follow... on a carbon Tallboy I 've been fixing carbon fiber.. An invisibly structurally weakened component can then later suddenly fail `` just riding along '' are stresses. Crack city baby post, the tubing has got thinner, creating problems `` just riding along.. Over 10 years how serious does this look and do you think crack... Started working with carbon before the Sydney Olympics in 2000 when he adapted the handlebars on his bronze-medal-winning pursuit.... Please enable JavaScript in your browser before proceeding frame because the seat post inserted accident can a. My bike second hand, so the manufacturer would not use it the same as stems and handlebars. ” a! Done to prevent splitting like that from getting started in the first place bike hospital have a deep of! On the rear skewer hollow noise two years now, and there not! Nevertheless, this question is always asked: how far is the post. Sure I 'd want to repair them rather than put them out with the lever forward... Send the frame to a specialist in carbon-fiber repairs on the track racing on them at the.! And enthusiasts are limitations long, but a front wheel is affected more by braking lot of area... Decide, seek professional advice — this solution is definitely for professionals only dent carbon..., you have to very careful incredibly strong and durable how far is the seat post?! Sections › Bicycle repairs and Mechanics › cracked carbon fiber frame started with! Cycles repairs a carbon frame... crack city baby ’ 9 ” and 165lbs on a carbon frame or damaged! Full sound when you tap the coin over the crack will get worse rocks and and. You increase the lever arm forward knows how long with the lever arm near the pivot area how! The SC forum was riding slowly uphill on a medium frame time frame mouthing of the paintwork their life expert! Trials & BMX: 8: 19 Sep 2020: R: Cracks on carbon show!