Your Carbon Fibre Bike Won’t Last Forever

I own a Trek 5200 from 1998. I raced that frame from 1998 - 2009 I officially retired it only because I I wanted to try out a Madone. I still own that 5200 today and it's just as stiff as it was brand new. I don't race it anymore but I do use it on tours rides, fundraisers, and riding to work. It doesn't just sit. I do keep it inside my house when not using it. It is well cared for as in maitained. The frame doesn't feel dead it's 26 years old I estimate over 200,000 miles on it and it's just as if not faster then most modern bikes

Probably the best, most informative video GCN has ever produced. Top presenter too, well done Ollie 👌

"It depends" is one of the most common answers given by engineers to engineering questions. For good reason ;)

This is such great content. In a world where the majority of YT videos is an ad for something it's just great to see plain informative content. Thanks!

The fatigue on Mark Cavendish's frames is directly related to how many mechanics he's thrown it at.

Ollie - I love these videos of interviewing cutting edge scientists. I would ask not only about aluminum and steel, but titanium as well when you are able to perform the second interview. I certainly would like to see more videos like this one!

Thank you for creating such high quality content. It's great to hear the opinions of reputable experts on the technical aspects of frame construction and fatigue. For cars there are many independent organizations that test safety, reliability and performance. Cycling just isn't there yet, but it's great to see media like this moving us in that direction.

Wow, now this is an awesome content from GCN! Understand GCN can't be producing these type of contents all the time but keep it coming! Good one GCN, good one Ollie and thanks to the experts too for their insight! Hoping for a part 2 n maybe 3 from those polymer experts and then about the other materials like aluminium, steel and especially titanium!

Thnx Ollie, great content. (I was getting fed up with all the sponsored bits, it feels good to not have to be cynical about a topic because of the segment being sponsored)

Really great video Olly, really good questions and answers from the experts. It's good to compare the different frame materials, and good to hear about fatigue stress levels and deflection cycles. It would be really good to do a video on tube shapes and sizes and wall thicknesses, which drives the stress and deflections, and then the forming and shape of the joints, such as the bottom bracket area, and how that can stiffen or flex the feel, and is pretty much independent of material. Great to see some engineering principles talked about!

100% want to see a before and after season bike stiffness test for a sprinter.

I really love listening to gcn tech when I'm working on my bike. I have learned a lot of stuff just by listening to you guys

Here’s my takeaway: Thinking about carbon failure is energy draining which robs us of watts. Which then prevents Ollie exceeding 1000 watts. Now off to that video.

The best interviews and subject matter to date on GCN imho.More of these please! I have carbon,steel & Ti bikes from the 90's. Can you do this with titanium? Also further research with polymers and finishes would be great,Thanks !

Extremely informative content from dr.ollie and GCN ,feeding my hunger about bike as a pandemic newbie cyclist. More content deserve to be waited.

Hands down the best GCN presentation I have watched, 100% informative and interesting. Plus, how can you not like Ollie?

This is the content I want from GCN Tech, love it.

Love this sort of stuff. Deep dives into bikes science are always appreciated.

I love this format. Overall I'm very much into deep dives that deserve their name and are carefully planed and researched. Knowledge ist nice and I would guess, that many of the viewers do appreciate that kind of content.

Love GCN, Ollie, tech, carbon fiber, and weekend naps. This video hit the ball out of the park! ⭐⭐⭐⭐⭐