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There's No Good Reason to Buy a Carbon Bike

outsideonline.com

61–70 of 102 posts

Re: There's No Good Reason to Buy a Carbon Bike

#61

People who ride carbon mountain bikes absolutely baffle me. The thing is going to get seriously chewed up if you're having fun and pushing your limits, why make it a glass canon to boot?!

Carbon MTBs are pretty strong. Just don't clamp the frame so much you are crushing it and avoid direct rock hits, which will damage any material anyway.

Re: There's No Good Reason to Buy a Carbon Bike

#62
post #14

I read back in the blog history of this author and thought to myself, "yeah, what an opinionated dork!" Then I got to his post about the beauty of friction shifters and went, "yeah, he's right!". Scrolled some more "what a dork". Etc.

I mean, it's Bike Snob NYC. You've captured his (online) personality quite well.

Had the same thoughts about "Bike retrogrouch" a while back. And with more bloggers and people after that. Then I realized opinionated people tend to be noisy.

Re: There's No Good Reason to Buy a Carbon Bike

#63
post #17

It’s not necessarily about “elite racing performance” for a lot of people. Carbon fiber frames dampen road vibrations a lot better than aluminum and are noticeably less “harsh” to ride. For road bikes which typically don’t have any shock absorbers, a decent quality carbon frame is simply much more comfortable to ride on than the equivalent aluminum frame from the same manufacturer. This can make a huge difference on…

Some say carbon fiber has the steel-like dampening properties. And steel can be welded by anyone. OTOH an aluminum bike has to have suspension because it is so harsh to ride w/o it. In general, the whole current bike culture with very expensive bikes/parts and a plethora of expensive and semi-proprietary tools is disgusting.

I'm curious what you think the vibration dampening properties of steel are. It's very notable to me that high quality steel bikes almost always come with a carbon fork if not suspension and that tuning forks are made of steel according to wikipedia. To me steel is in the "resonator" category, not something that dampens vibration particularly well.

I also wonder if people like the ride quality of steel because, like very thin high pressure tires, it carries high frequency vibrations that _feel_ fast but science tells us clearly are not good for going fast.

Re: There's No Good Reason to Buy a Carbon Bike

#64

Wow, not a single mention of fatigue limits in the article and in the comments here, I MUST POST. Titanium and steel have a property called a fatigue limit[0], aluminum and carbon do not. There's a stress threshold below which steel and titanium accumulate zero wear, making their cycle life effectively infinite. Every bump Al and CF take puts them on setp closer to failure, and that failure tends to be catastrophic.…

True. But carbon MTBs can last a decade of abuse.

Re: There's No Good Reason to Buy a Carbon Bike

#65

What about aluminium?

Yeah, that's kind of the flaw in this argument. The main conclusion is basically correct, but steel rusts and aluminum doesn't. Plus aluminum is light enough to warrant upgrading over steel, and it barely costs anything more.

Stainless steel does not rust too (maybe it does Zig?) but if I recall correctly the con about it is that it's a bit heavier than "normal" steel.

Still I'd love to have a classic-ish stainless steel bike with disc brakes.

Re: There's No Good Reason to Buy a Carbon Bike

#66

Wow, not a single mention of fatigue limits in the article and in the comments here, I MUST POST. Titanium and steel have a property called a fatigue limit[0], aluminum and carbon do not. There's a stress threshold below which steel and titanium accumulate zero wear, making their cycle life effectively infinite. Every bump Al and CF take puts them on setp closer to failure, and that failure tends to be catastrophic.…

my 25 year old aluminum hard tail begs me to share that while this is factually correct, the lifetime for an alloy bike frame isn't a real practical limitation, just a talking point.

Re: There's No Good Reason to Buy a Carbon Bike

#67
post #64

Wow, not a single mention of fatigue limits in the article and in the comments here, I MUST POST. Titanium and steel have a property called a fatigue limit[0], aluminum and carbon do not. There's a stress threshold below which steel and titanium accumulate zero wear, making their cycle life effectively infinite. Every bump Al and CF take puts them on setp closer to failure, and that failure tends to be catastrophic.…

True. But carbon MTBs can last a decade of abuse.

yeah this isn't a real concern

Re: There's No Good Reason to Buy a Carbon Bike

#68
post #30

It’s not necessarily about “elite racing performance” for a lot of people. Carbon fiber frames dampen road vibrations a lot better than aluminum and are noticeably less “harsh” to ride. For road bikes which typically don’t have any shock absorbers, a decent quality carbon frame is simply much more comfortable to ride on than the equivalent aluminum frame from the same manufacturer. This can make a huge difference on…

they dampen vibrations better than steel and titanium too tbh. I've never understood the "ride feel" thing about metal frames. Metal tubes are very resonant. that ride feel is just the same vibrations that make on 23m tires _feel_ faster compared to 30m but the science is clear that high frequency vibrations are bad.

For MTBs, a steel hardtail does feel very, very different from an aluminum one. Steel feels springy and just absorbs a lot of vibrations. You can feel it in your ankles after a ride. Definitely there is a large difference between steel/titanium and everything else.

Re: There's No Good Reason to Buy a Carbon Bike

#69

Carbon fiber bikes have two main properties that can affect performance: 1. they are a little lighter. This doesn't matter nearly as much as most cyclists think, but it does matter a bit. If you race competitively in the mountains, you might care. 2. There is more design freedom for shaping them aerodynamically. This makes a bit more difference than weight, and if you are competing you definitely want it.

they can also be stiffer in some directions and more flexible in others, which is a huge underestimated advantage compared to metal bikes.

Re: There's No Good Reason to Buy a Carbon Bike

#70
post #64

Wow, not a single mention of fatigue limits in the article and in the comments here, I MUST POST. Titanium and steel have a property called a fatigue limit[0], aluminum and carbon do not. There's a stress threshold below which steel and titanium accumulate zero wear, making their cycle life effectively infinite. Every bump Al and CF take puts them on setp closer to failure, and that failure tends to be catastrophic.…

True. But carbon MTBs can last a decade of abuse.

Decade? Is that a merit?
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