If you sit on an aluminum top tube, theres a chance of getting a dent. But I came here to enjoy riding Lake Tahoe on my faithful steed. (Subject of a future post.) In general, cracks should not be repaired, especially on carbon fiber components. A cycle accident can leave a bike with busted bits, but that need not be the end. Is this repairable and worth repairing? And imo, would be a difficult repair. Jump to Latest Follow REVIEWS DEALS BIKESHOPS TRAILS 1 - 20 of 26 Posts ... (seat post) on there will break the frame at some point. The broken pieces may not need to be discarded, as they may be fixable in the hands of expert carbonologists. How serious does this look and do you think the crack will get worse? Under normal riding conditions, carbon fiber frames are incredibly strong and durable. Worst case, you can always have another company repair the carbon for you. 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. It's a small crack only maybe 5mm long, but there's a definate hole there and some plaster wedged in. Not sure I'd want to be riding todays carbon frame in ten years time! A repaired headtube-downtube junction. If you want bomb proof, then invest in a steel frame. Our carbon repairs are performed in the worlds most advanced carbon bike hospital. 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. But sometimes it is not possible. 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. If the bike is insured, then it’s hard to see why you’d take the risk. Again, wheels are expensive, so people want to repair them rather than put them out with the recycling. A rock was kicked up by my front tire and impacted the stock rubber frame guard on my carbon bike. 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. “It’s even possible to mend parts of broken forks, depending where the damage is. A repaired headtube-downtube junction. 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. I will say that out of the saddle I would prefer a cannondale though. 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. Alloy bikes dent but carbon fails catastrophically when it goes. Surely carbon should be up to this level of use. in Mechanics' Lounge. ... or cracked carbon fiber frame! New Reply. Riding with cracked ribs ! So pass the electrical tape. The second bike I tested was the 2015 Santa Cruz Bronson Carbon S version ($4699). Advice please: Bicycle Mechanics & Repairs: 21: 2 Aug 2020: Post mount disc brakes - cracked carbon: Bicycle Mechanics & Repairs: 12: 21 Jan 2018 Note to readers: The decision to ride a compromised frame … As frames have got lighter, the tubing has got thinner, creating problems. That’s interesting. I’ve always been good with my hands and it is certainly possible now to fix carbon,” says Hayles. If it was not the manufacturers would not use it. I’ve never heard of breaking a frame because the seat post was too long. VerticalScope Inc., 111 Peter, Suite 901, Toronto, Ontario, M5V 2H1, Canada. Riding all day on the winter solstice Yesterday 12:53 PM: Newton-Rider, a helmet like … Cracked carbon frame from shipping? Come join the discussion about bike parts, components, deals, performance, modifications, classifieds, trails, troubleshooting, maintenance, and more! 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. There has been no creaking from the frame at all which I understand is a tale tell sign of a 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. The ride is like silk in comparison to my aluminum cannondale. You get more torque as you increase the lever arm. ... A guy in the SC forum was riding slowly uphill on a carbon Tallboy. Jump to Latest Follow ... on a slippery root,stalled and tipped over. 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. If the polish cracked, the frame was cracked. My question is … I heard the crack as I hit the ground. Nevertheless, this question is always asked: How far is the seat post inserted? Safety can be a concern after repairs, and special care and expertise is needed with wheels. Not sure if you get more torque with the lever arm forward. Just failed. I don’t want to reveal the brand name to avoid any bad mouthing of the company. Hard to see, does it go all the way through, or just the paint? He’s on the track racing on them at the moment,” says Hayles. No impact from a rock or crash. Mountain Biking, Trials & BMX: 8: 19 Sep 2020: R: Cracks on carbon forks. Usually common with riding a frame size too small. A cracked metal frame is perhaps the only exception to this: it may be possible to repair a cracked frame by welding. Do not try to repair carbon at home. It’s more liable to break in the event of a crash — more so than a steel or aluminium 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. Carbon has its +/-'s Hey, I've been riding carbon for about two years now, and love 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! 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.[/. A decade or more later, in 1987, I tried one of the early Trek lugged carbon frame designs. 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. If the polish didn't, the frame was likely sound. Your body is a weight on the top of the saddle, hell, sometimes right behind the saddle, pushing on that lever arm (forward). If a frame gets cracked, it’s much cheaper to replace. '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.' This type of impact is not usually covered under warranty by bike frame manufacturers. A normal frame should have a full sound when you tap it. @Daniel, carbon forks show their damage, just in different ways. I’m 5’9” and 165lbs on a medium frame. It also takes a much higher impact to do damage. There are 2 parts to the repair process: the repair of the carbon fibre and the retouching of the paintwork. Carbon, with all its qualities, also has its shortfalls. The broken chain then got it… Broken carbon is terrifying, I would not personally continue to ride it. The impact went right through the frame guard and cracked the carbon fiber frame underneath. It's about comfort and performance. The frames are designed to take ride loads from sitting in the saddle. Much better than the early Exxon, in both look and feel! “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. 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). I bought my bike second hand, so the manufacturer would not warranty my frame. I've cracked a Rocy Mountain carbon frame near the pivot area. With clinchers, there are greater stresses on the rim from braking,” he adds. 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