Where is mass market carbon fiber? Expensive carbon fiber parts aren't interesting.
It's not even that expensive if you consider that it's maybe 5k extra now that even a basic car can cost $40000
It's not even that expensive if you consider that it's maybe 5k extra now that even a basic car can cost $40000
And while I'll give that there was variety between vendors, some of them were doing sophisticated layups with multiple grades of wave that withstood a torture tests far beyond the ANSI bike tests.
In fact you could argue they were overbuilt compared to Western brands (at a cost of 100 - 150g) since they didn't want to deal with warranty claims.
Truly amazing, cheap, good quality mass market carbon products.
That's the single strongest advertising for a product I've seen in a while.
As a customer, I also don't want to deal with warranty claims. Overbuilt = as it should be. Excessive optimization ("value engineering") = bad, waste of resources, and producer of trash.
(Excessive optimization also limits what you can do with a product, and is potentially unsafe, as normal use could exceed structural or operational limits of the product, breaking it, and potentially hurting the user.)
(Okay, I feel like I'm gearing for a long rant about sorry state of physical goods on the market, so I'll just stop now.)
The 'carbon core' chassis are a combination of steel, aluminium and carbon fiber parts bonded together with adhesives. It is primarily used to improve chassis stiffness, not necessarily for weight savings.
Unfortunately it wasn't well received by the public, most critics seemed to agree that it's a bit of a gimmick feature. As far as I can tell BMW is no longer using the carbon core concept anymore. It was announced at the time that the 5-series would get a carbon core chassis as well, but I don't think that ever happened. The technology also hasn't trickled down to their performance cars lineup as most had hoped.
To me it's kind of saddening that people are willing to pay top money for carbon fiber body panels and interior trim, but when applied to the chassis (where it actually matters) they become sceptical armchair engineers.
Anecdotal, but a friend of mine who worked at BMW dealership at the time told me that the i3 didn't sell as good as BMW had anticipated, but since they had already invested heavily in the tooling to produce the i3 carbon chassis parts they needed to look for other applications. Apparently this is what led to the carbon core chassis concept for the then upcoming G11 7-series.
I remember buying a carbon fiber squash racquet back in college when money was tight without breaking the bank (although I did break the racquet when accidentally hitting the backwall instead of the ball once though)
Having said that, the chrome moly top tube on my road bike broke without warning. Granted I did get hit by a cop car doing 80kph in a 50kph zone. Strained a thumb too.
If you want a bike to give to your grandkids when you die get Ti or some form of steel.
However, I still worry about getting my carbon hiking poles stuck in a crack, them breaking and then impaling myself on the sharp break
> If you do ride your bike enough, you're almost certainly replacing frequently enough that it will never be an issue.
True for the light athletes that take care during usage and "upgrade" often. Part of the motivation to upgrade is security.
Be more careful if you ride in urban/outdoor with potholes and like to keep using a piece a hardware when it fits your needs.
As a bike mechanist we checked meticulously every second hand frame we sell and find some cracks time to time. Those happen (CN and Aluminum). Direct to the bin.
More importantly: check your rims, especially as we entered the disk era and don’t change them so often. They also do get cracks and fail catastrophically.
I am familiar with the failure mode of bonded frame, we had a number of vitus bikes in the family and usually they just become so noodly you stop before the bond is giving up totally. To be honest I am more concerned about the fatigue of the aluminum fork legs which is the reason I recently ordered a steel fork for the next time I am riding it.
With the ubiquity of frames at the high amateur level, if there were still issues you'd hear more about them.
Re CF frames... one neglected point is that even when you do crunch them into a rock, they're repairable, whereas Al frames aren't worth repairing due to the heat treat needed. My own CF XC MTB has a repaired chainstay.
whoa
where does it come from? Equinox EV is $35K MSRP and with $7.5K tax credit you get under $30K. Of course if $5K extra is not that expensive for you then i guess your "basic car" is a bit less basic than one may think :)