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Leaky, that is terrible! Good for you for getting back on the horse, so to speak.
Tim K |
Guys- what type of glue/adhesive can I use on a plastic fantastic carbon frame?
Want to re-attach an errant vinyl/plastic makers badge to the head tube - but Im leary of using a glue that might in any way weaken the material, especially there...tried a benign 'craft' type glue, didn't work. Super glue or araldite...any reason not use these on a plastic/carbon frame? Happy to leave it off also. Thx Stuart |
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| Ruckus Composites |
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This vid has been going viral and shows another carbon failure - the fork blades shear off at some point during this crash .... looks like maybe that piece of scrap aluminum he hit got caught in the spokes and then flung around and sliced right through the forks. <iframe width="853" height="480" src="//www.youtube.com/embed/iV9_i9MEnMg" frameborder="0" allowfullscreen></iframe> |
I hate seeing stuff like that. It scares the hell out of me knowing carbon can fail.
I wonder what cause the front wheel to lock up like that? The bent piece of steel could have been picked up by the wheel then thrown into the spoke causing first breakage to the fork? There's no way a rider can go over the bars like that unless something got into the spokes. Also, it it looked like the bike landed on the front wheel causing the whole thing to explode. the attached wheel to the fork blade got separated as soon as it hit the ground. the second impact might have finally broken it off completely. Notice the damage the steel bar make to the down tube. |
going back to see the vid again at :30, the wheel broke before the steel pipe was picked up and thrown into the frame.
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[EDITED after frame by frame viewing - Chrome has an extension for this)
Stop the video at the right instant and you can clearly see a black bar shaped thing about 2 feet long, positioned horizontally, right behind the fork blades about midway up from the hub. Can't tell if it is in the spokes, or got picked up by the tire tread. I'm guessing the latter because later on you see the wheel and the spokes are intact. The bar changes position from frame to frame, maybe it gets jammed in the fork crown and the end hits the downtube in the process. When the bike goes airborne, the front wheel looks still attached. I'm guessing the fork blades were broken by the impact with the ground. Anyway, seems whatever material the frame was, that rider was going to go airborne, and when the bike hit the ground, there'd be big damage. A steel frame would likely have been toasted too, maybe not broken clean through but destroyed nonetheless. |
Here are some frames
Crash1 just before the bar gets picked up http://forums.pelicanparts.com/uploa...1420469137.jpg Crash2 the bar is behind the fork crown, it moves around in a few different positions back there and the wheel starts to deform http://forums.pelicanparts.com/uploa...1420469147.jpg Crash3 the rider is starting to lift off the sadle and pitch forward, wheel is deformed, bar still behind the fork http://forums.pelicanparts.com/uploa...1420469159.jpg Crash4 the rider is going over the bars now, rear wheel far off the ground, note front wheel and fork still on the bike and bar still visible behind the fork http://forums.pelicanparts.com/uploa...1420469172.jpg Crash5 bike is high in the air, you can see front wheel still attached http://forums.pelicanparts.com/uploa...1420469182.jpg Later you see the bike land pointing straight down, hitting with the leading edge of the front wheel. |
Here's a couple of more. The first one shows the piece of metal on the ground, angled up toward the bike - easy to see how it could get into the spokes.
http://forums.pelicanparts.com/uploa...1420496095.jpg This second one appears to show the metal object in the spokes: http://forums.pelicanparts.com/uploa...1420496572.jpg This shows the blades sheared off even with the rim: http://forums.pelicanparts.com/uploa...1420496221.jpg Almost looks like a windshield wiper blade Not much of a piece of metal to cause such a catastrophic crash: http://forums.pelicanparts.com/uploa...1420496291.jpg Bottom line: this is one of the risks of riding fast in a tight group. You are essentially riding blind and relying completely on the leader to warn of road conditions. I wonder how the leader of the group missed it and failed to warn everybody? |
You're right Curt. My eyes are crummy.
That looks like only about a third or a half of the spokes cut. Seemed like the front wheel rolled more than that, but I'm not sure. Maybe it wasn't "rolling". |
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Something in the spokes is always bad, whether the fork breaks or not. The way that bike flipped, it appears the rider was ejected by the wheel locking, and the fork broke subsequent, either due to the bar impacting it (likely, given the shear) or the ground. Steel fork would have caused same crash. Rider was lucky, I've had a number of cases (never actually sued anyone, just folks that came in) with broken forks where there were major helicopter ride type facial injuries from riders hitting the ground. I try not to think about it too much.
I was chewing the fat with an ex rider from our group on the weekend who is ex because of a front wheel related crash of which he knows not the cause that broke his wrist, radius and shoulder. Permanent deficit in wrist. Another current rider, a strong boy, 40, who's never been down hard could be seen to wince and shy away each time we discussed our various hospital visits. |
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Bond in retirement enjoying the humble Raleigh DL1.
http://2.bp.blogspot.com/-jc3GXYT_jP.../s1600/aa3.jpg |
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My commuter bike weighs 43 pounds wet.
Forty three pounds. No wonder I get tired going home at night.... |
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