Here is my simple solution to proactively reduce contact stresses and hence contact damage: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-cd-oJzEFIuU.htmlsi=qaVEeLGeFLGwTfxm
Yeah another video! I've broken 2 carbon bars, one from getting hit by a car, another falling at a traffic light from wonky track stand. Carbon bars aren't worth it, yet all my bikes have them. 😏
I had a very stiff Merckx with MAX tubes, and even on smooth roads it was incredibly fatiguing to ride because of the stiffness. It didn't matter if it was efficient at energy transfer, I could not last that long.
Daß die gezielte Störung des ganzen nur eine Randbemerkung am Schluß wert war, wo doch klar und bekannt ist, daß "der Gegner" (hmm - wer könnte das sein...???) gerade hier besonders fähig und innovativ ist - das ist sehr beunruhigend. Hätte auch erwartet, daß man auf die Aufrechterhaltung der ganzen erwähnten Kommunikation etwa im Fall der Sabotage der Satelliteninfrastruktur eingeht - oder gibt es da nichts? Zudem sollten wir informiert werden, was im Zusammenhang mit der politisch versprochenen langfristigen Verteidigungsfähigkeit der Ukraine vorbereitet wird, um einen Beitrag zu leisten, die Ukraine wirklich resilient gegen politische Änderungen ihrer Unterstützer ("Trump-proof") zu machen. Was, wenn am 20.01.2025, 12:01 alle Starlink-Satelliten über der Ukraine abgeschaltet werden?
Raoul has done videos on how he uses ultrasound to detect the internal damage or flaws in carbon fiber. My recollection is that some damage can be detected by less sophisticated techniques, but you need ultrasound to catch everything. Finding someone in your area to do the ultrasound might be difficult.
That´s exactly the reason why I went back to an aluminium bar. I never crashed, but it´s reassuring during downhill sections and sprints. Who cares about 20g weight advantage...
@@timmatkowski3840 yep i agree. There is a more solid feel through aluminium. Overall you need to look at risk verses benefit. No one on this pkanet is going to significantly benefit from losing 50 grams of weight from a handle bar. An arguement of frequency loss from the two materials may have some merit, but I haven't seen or heard of any studies. If the carbon didn't have a clamping action from the stem or the stupid ring to support the lever assemblies. The bicycle industry is severely under cooked so far as development can you imagine the aero space industry of formula one coonecting components in a vibrational or fatigue enviorment. Its a sham and a joke, it virtually proves the industry driven by profit and non standards
Please make more vids, we need advice like this. I was just watching the GCN vid of the new Canyon aero race bike and had to turn it off due to the OTT marketing language, Your vids are much more useful.
Many of my friends have a Cervelo S5 and they have crashed a couple of times but it doesn’t seem to do any harm at all atleast cosmetically, don’t know about the hidden damages though.
Many of the ones that I scan are delaminated internally with no visible indication. The delamination can propagate over time, will it fail? I don't know, but they did change the design on the newer version, so that tells something.
@@LuescherTeknik What is the newer design like, and do you see there being any issues with them? In addition, what equipment did you use for filming here? Your footage and lighting is crisp!
On my C'dale Supersix Himod I've use Deda long expander 70 mm instead C'dale light construction, Hopefully I can avoid carbon steer tube breaking under load. I have accumulated many samples of 10-50mm rings from cutting the head tube. High-quality carbon fiber has thin walls and can withstand enormous compressive loads. Chinese brands and even middle-end line Canyon have thick walls. Despite this, they break very easily. I don't have an accurate frame to test for fracture load, but cheap carbon is dangerous to ride.
Incredible. Was that dropout originally a plug-end inserted into chainstay tube or did they cut right angle at a crack and "create" the male plug end with filler? Why would anyone make a bad steel splint when making a stiff, custom-fit CF splint (that wouldn't have rusted) was the simpler solution? I guess no CF and epoxy in the cabinet, just bondo and paint?
And this is why I will never own a carbon frame. Carbon frames are dangerous for bicycles regardless of cost/manufacturer. A steel or alloy frame will generally give waring signs before complete structural failure, cracks/creaking etc. How many used carbon frames hide a multitude of sins behind a lash up paint job. And that's just the parts of the frame you can see!
Expensive road bikes are the biggest industry Con going...For every 80 pro frames made for the Tour...they expect a failure rate of 10 frames...Carbon fibre is the only construction material that cannot be tested for its breaking point...because its so inconsistent ....This is why people like James Cameron who is a certified engineer...refuse to use it ...Also failure in the fork crown is common...leading to bad accidents !
CF is fine when it is used by competent engineers. Not marketing departments who want to make complex shapes while using as little material as possible to save weight.
That is an absolutely Perfect job. Top repair. What on earth are you going on aboyt Raoul? 😂😂😂😂 it's a Steel frame with carbon bits stuck to it here n there....😂😂😂😂😂😅😅😅 Anyways I hope all is good with you mate. Happy to see you're still doin' them great Carbon videos. Cheers.😉
Importer: "not a problem we will have your frame fixed under warranty" Would be interesting to know the history of this frame, if the customer knew it was repaired, did they buy 2nd hand etc. Ive heard of some real dodgy stuff done at the factory even, like last years paint scheme under this years paint scheme etc.
