Carbon seat stay crack

Regardless of use, storage or age, no carbon bike or fork should be used after 10 years. If youve discovered a hairline crack on your carbon frame, is it the paint or a ruined frame. Jun 04, 2019 recently had a collision with a van that slammed on the brakes which sent me headlong into the rear of the vehicle putting a crack in my fork. Since this was my first time with carbonfiber, i decided to do a test run.

On dropping bike off was really impressed with the workshop and with how they explained the processes they follow. We pay a lot for these frames, but carbon is carbon. Since this was my first time with carbon fiber, i decided to do a test run. Modern 2017 carbon is quite amazing and much safer than older carbon because of better quality control and knowledge from experience. If you cant feel it with a fingernail, the crack probably isnt in the carbon. Constructive crack in the transition droput to seat stay. Need some input from users, and not just relying on manufacturing advertisement for what might work well, with the growing use of carbon fiber for wc parts i figured someone would have some experience trying to repair this material. Cracked seat stay bmc slr02 hi all, i bought a second hand bmc srl02 fairly new with a new ultegra 11s groupset. That said i was considering getting the whyte stirling 999, but have seen a 2011 marin mill valley with the carbon seat stays on sale at 895, so not sure which to go for. Therefore riders can now choose between 2 to a maximum of 3 different frame sizes for their body height. How to tell if a carbon frame is damaged or if the paint. Pdf owners manual supplement revision 1 synapse carbon. The frame has a crack in the paint that appears to affect the carbon as well on the left seat stay and there is damage to the carbon on the top of the seat tube from what looks like the previous owner having the seat post all the way down and not securing the seat post clamp properly. This makes for very cleancut edges, and i hope will reduce fraying.

I got this bike with chain stay already replaced to aluminium due to crack. Apr 04, 2005 my seat tube has circumferential cracks 15mm above the top tube joint and 25mm below the top of the seat tube. Somehow and were not precisely sure of the precise sequence of events it seems that i managed to break the bike chain. I need any feedback, good or bad, of epoxys to try to repair a small crack in a non vital area, side guards before it becomes. Offering mindblowing strengthto weight ratio and cool factor of carbon fiber, along with the industries 1st true quickchange system, this pack frame gives you versatility never before seen in the industry. The carbon bows out both on the inside and outside of the chain stay. My understanding is that a raw finish is just as durable as a. Caut000 cleaning when cleaning your bike, use only a mild soap and water solution. I am getting ready for my usual alps and italy trip and suddenly found out that a friend at work who has his capra for 3 weeks has cracked the carbon seat stay at the mech hanger. Two questions regarding probable broken seat stay carbon in mechanics lounge. According to this diy carbon fiber repair kit we stumbled across, cracks and abrasions in your frame are quick and easy repairs to do at home.

Carbon bike builders want you to buy new frames when you break one. Another trick is to whack the tube with a quarter over and around the crack. Its unlikely that any carbon seat tube design would take an expanding topper without spacers, as the internal pressure to maintain height would likely crack the tube before it could brace itself enough against the interior walls to maintain height over rough roads. It had a straight forward crack in the nondrive side seatstay that i fixed and wrapped with matte black vinyl to make it almost invisible.

September 2011 edited october 2011 in commuting general. If it would have been my bike i would not have put it back together or thrown a leg over it. It should also be noted that seat and chain stays are relatively thin and that carbon tubes are best in tensile and compression and dont like side impacts. To verify just put two or three drops of oil on it and if the oil disappears after a few minutes its a crack the oil will seep into the crack. Sep 01, 2011 its unlikely that any carbon seat tube design would take an expanding topper without spacers, as the internal pressure to maintain height would likely crack the tube before it could brace itself enough against the interior walls to maintain height over rough roads. Some manufacturers tell you not to grease the seatpost with some frames. I got online help at youtube, to help mend the compromised seat stay. Dr cracked seat stay, looking for opinions experience of carbon repair. Jul 15, 2014 as the title says my brand new less than a month oldless than 60 miles ridden planet x pro carbon has a crack in the seat stay, im distraught, this thing is my pride and joy. Getting carbon frame repaired broken rear wheel stay. Small crack on seatstay of carbon frame need to change. According to this diy carbon fiber repair kit we stumbled across, cracks and abrasions in your frame are quick and easy repairs to. The seat post also looks to have a crack from over. Hi, theres a line on a carbon seat tube, and i need your help to determine if the line is just a scratch or a crack.

This is the steel and carbon odonata, with the seat tube being carbon. You are viewing a used cervelo p2c 51cm carbon fiber tttri frame. Cracking carbon seat stay on 2007 titus racer x forums. Abrasion on drive side chain stay from dropped chain. Id back this up with the location of the crack relative to contact, that it looks like impact damage on carbon, and ive seen this happen a couple of times before. Look cycles also use an internal topper for their proprietary design called epost. So i would say that could happen, but you would definitely know about it happening. Custom bike painting and repair of carbon frames and components. The repair time was over three weeks and shipping was a mere 85 miles nne of tampa.

As an example, trek says that a special insert inside the seat tube of oclv carbon frames means you should not grease a seatpost inserted into an oclv frame. Bicycles stack exchange is a question and answer site for people who build and repair bicycles, people who train cycling, or commute on bicycles. When i bought another carbon fiber, pure road machine, i immediately replaced the seat with another ride out. Damaged ad superleicht 53cm carbon road frame bb30 repair. Carbon seat post slipping into frame cyclechat cycling forum. How to tell if a carbon frame is damaged or if the paint just. There is a crack in the center of the carbon, about 2cm long where the seat tube made the layup in the back bow out. What is the average price range of a carbon repair from your shop. Damaged ad superleicht 53cm carbon road frame bb30 repair road cycling. Since your carbon seat post can also be damaged by clamping force, adjust the stand clamp for the minimum clamping force needed to secure the bike. There is a crack in the carbon seat where the rear derailleur hanger screws into the frame. My seat tube has circumferential cracks 15mm above the top tube joint and 25mm below the top of the seat tube. Bmc down tube crack before 1 bmc down tube crack before 2. Repair is brilliant but plain black stay doesnt match naked carbon weave of other stay in bright sunlight.

Eric fixed a damaged carbon chain stay and some cosmetic damage on my roubaix last year. I started my career building and repairing windturbine. Strider greatness meets carbon fiber, highend performance product name. Synapse owners how do you tighten your seatpost screw. Got to see a repair to the right seat stay of a carbon madone that suffered a broken and spun rear deraillure. Carbon cranks and wheels from ethirteen and the renthal fatbar carbon handlebar keep the weight low and round out the capra 29 cf pro race build in style. The guy in the shop pointed out to me that the defy comp has like a cut out in the frame on the seat tube so if the stem suddenly slipped all the way down it could crack the frame.

Okay cheers guys, never owned a carbon bike before so was unsure about all this. This one had been repaired very incorrectly elsewhere. We know it going in and this is a notorious spot for cracks. The carbon seat stay in my rocky mountain element frame had flex on it. Diy carbon bike frame repair tools, supplies, how to. Therefore, you will crack the frame before you will damage the seatpost not nice. On a scale of one to completely shagged, how bad is this crack in my frame. The delamination might be more apparent on the other side of the material from the actual impact, but you cant see this in closed tube like a seat stay. A few months ago i hit some sand in a curve and crashed my bike. Additionally, theres a crack on the right side closest to the camera about 4cm where the paint and the outermost layer of carbon lifted up. They responded to my phone call and email immediately.

The left seatstay appears to have a pretty bad crack in it about midway between the dropout and the seat tube. Still shaking my head trying to figure out how this happened. Drove on 3 great rides in socal and i just discovered seat stay cracking. Unfortunately, a carbon frame can be cracked if you hit a pothole, especially the forks or seat stays which bear the brunt of the force. The seat post is set so that the minimum insertion mark is well below the crack. Jul 29, 2015 can you fix a carbon fiber bike yourself. Appleman bicycles can repair your damaged, broken, busted, or cracked carbon fiber frame. The top of the rear left wheel stay is soft with carbon sticking out. How to repair a carbon bike frame at home singletracks. Recently had a collision with a van that slammed on the brakes which sent me headlong into the rear of the vehicle putting a crack in my fork. The frame has a crack in the paint that appears to affect the carbon as well on the left seat stay and there is damage to the carbon on the top of the seat tube from what looks like the previous owner having the seat post all the way down and not securing the seat post clamp. The main reason i purchased this race bike is because i love to get into thriathlon and needed a racebike. The cracks started at the bottom of the adjustment slot in the back side of the tube. May 23, 2017 what is the average price range of a carbon repair from your shop.

As the title says my brand new less than a month oldless than 60 miles ridden planet x pro carbon has a crack in the seat stay, im distraught, this thing is my pride and joy. One fine morning i was riding up the mountain and i guess i was pedaling too hard or something. A small crack or defect on the carbon frame is not a total loss. Mar 14, 2015 seat posts carbon rims seat masts topper this video was about a carbon fiber layup repair, not paint. Dear lennard, i have a cracked carbon fiber seatpost. Diy carbon bike frame repair tools, supplies, how to, step. We had already demonstrated rear seat concepts, so we chose a front seat, which has higher loads and.

The basic task was to develop a lightweight seat back with additional functions integrated into it, says axel koever, manager of new technology at jci automotive seating. Im currently at a crossroad with my tcr the seat stay has a structural crack in it. Throughout all capra bikes sizes we offer a low seatpost height in combination with seatposts, that are specifically matched to each of the bike sizes. I rode this myself a few times as a single speed cx racer and around town but it is a little bit too big for me im 59 with 32 inseam. Frame capra carbon 29 high modular carbonfiber frame, v4l virtual 4link rear suspension, 148x12mm dt swiss qr thru axle, down tubeseat staychain stay protection. First, i taped off about a sixinch segment of the seatstay around the damage, and. New youtube channel find us on instagram fork steerer manufacturing voids we will be presenting at cyclitech 2016 snap, crackle and pop do fake bikes and parts crumple. That being said, even repairing the seat stays of two road bikes will be. I believe the synapse carbon 3 ultegra and above have a carbon seatpost, otherwise, they are all alumunum seatposts for 2014. I had seen similar cracks like this before but they were labeled as crack in the paint instead, not in the carbon layup. This is the second in four months, and this one failed after less than 25 rides. It was only a matter of time before it cracked, a potential disaster waiting to happen. Ive been fixing carbon fiber for over 10 years and have a deep understanding of advanced composite structure repair. Movement, because a crack will flex if its through the paint into the carbon, and you put pressure on the center of the crack, and time, because a crack will grow with time if its more than paint.

Im building up a seven odonata that i bought last year from another member of this forum. Having broken a seat stay different brand, id also say it looks like impact. Theres a line on a carbon seat tube, and i need your help to determine if the line is just a scratch or a crack. Seat posts carbon rims seat masts topper this video was about a carbon fiber layup repair, not paint. Modern 2017 carbon is quite amazing and much safer than older carbon because of better. Btw, the same outfit also makes a nifty seat bag that attaches to this seat. If you are even halfway concerned with a crack, dont buy the frame. The top of the chain stay, where the decalclearcoat is, also appears to bend outwards.

The repair was easily seen as were the transitions. Two questions regarding probable broken seat stay carbon. Carbon bike repair came highly recommended by 2 local bike dealers after crack in rear seat stay found. Feb 15, 2012 how to fix crack on carbon fiber bike. Still well within warranty obviously so im hoping planet x. Im laying out the fabric on plastic, applying the resin, then rolling it out, so the fabric isnt too resinheavy. And there doesnt appear to be any obvious cracking of the tube beyond the. Jun 22, 2014 okay cheers guys, never owned a carbon bike before so was unsure about all this. I started my career building and repairing windturbine blades before moving on to aerospace and then bikes.