31–40 of 91 posts
The kinds of cargo bikes that people get for home use are much smaller and presumably use a lot less CO2 than the commercial transporter with pedals they looked at in the paper.
All the numbers given here seem tiny in comparison to the emissions from manufacturing or using a car. It seems like premature optimization at best, and might even be counterproductive by implying that because some bikes are more sustainable than others, bikes are somehow unsustainable as a whole.
I read recently someone call something like this a hyperoptimization https://news.ycombinator.com/item?id=35431391
hyper optimizing something implies all low hanging fruit has been picked.
You think this generation is going to be riding more bicycles? Likely far far less, the roads are insanely dangerous and toxic now. I don't know what it is like in other cities but in mine at least one out of ten vehicles is now one of those new ridiculous monster sized trucks that not only cannot see you, they wouldn't care if they did. The bicycle lane line is now something to cruise over for these drivers while th…
That's not to say those yank tanks aren't crazy dangerous; they absolutely are. But getting rid of them doesn't make bicycling safe. Cars as a whole are the hazard.
All the numbers given here seem tiny in comparison to the emissions from manufacturing or using a car. It seems like premature optimization at best, and might even be counterproductive by implying that because some bikes are more sustainable than others, bikes are somehow unsustainable as a whole.
>Reynolds, a British manufacturer known for its bicycle tubing, found that making a steel frame costs 17.5 kg CO2, while a titanium or stainless steel frame costs around 55 kg CO2 per frame – three times as much. For the uninitiated: that is less than one tank of gas (ca 70 kg CO2) in my Toyota Prius.
Modern bicycles (except new e-bikes with chain guards and internal hub gears) require degreasing and lubing every two weeks, These are not going to be very attractive to people who use other means of transport, because cars don't need this sort of frequent maintenance.
I feel like modern bicycles seem to be optimized for light weight over ease of maintenance and longevity. Modern bicycles (except new e-bikes with chain guards and internal hub gears) require degreasing and lubing every two weeks, These are not going to be very attractive to people who use other means of transport, because cars don't need this sort of frequent maintenance.
What's your basis for your claim of such frequent maintenance? Also, what do you mean by a modern bike?
I feel like modern bicycles seem to be optimized for light weight over ease of maintenance and longevity. Modern bicycles (except new e-bikes with chain guards and internal hub gears) require degreasing and lubing every two weeks, These are not going to be very attractive to people who use other means of transport, because cars don't need this sort of frequent maintenance.
I feel like modern bicycles seem to be optimized for light weight over ease of maintenance and longevity. Modern bicycles (except new e-bikes with chain guards and internal hub gears) require degreasing and lubing every two weeks, These are not going to be very attractive to people who use other means of transport, because cars don't need this sort of frequent maintenance.
There's nothing wrong with continuous improvement but when you are trying to fine tune something in the flat portion of an exponential scale, and lets face it, even the most expensive bike shown here is 1/2 the burden of an ICE engine car, you have to ask yourself: is this optimisation really the core problem? I argue: it's not. It's polishing. It's functionally a bit time-wast-y compared to reductions in the cost, a…
You don't need disc brakes. You don't need carbon frames, or even aluminum ones.
These things are marginally better performing than their predecessors, but we want things to get better and better forever. That is exactly what makes it unsustainable.
We'd be better off settling for good and sustainable than best and unsustainable. That's all.