261–270 of 316 posts
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A disadvantage is that only the rubber absorbs impacts, since the fluid is incompressible for all intents and purposes.
The tyre is only partially filled (for example 40%) with water - so the tyre is not “incompressible”. https://salesmanual.deere.com/sales/salesmanual/en_NA/tracto...
IMPORTANT: Never fill any tire to more than 90% full. More solution could damage tire.
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This was very cool to read; thanks for such an informative comment. I imagine this will sound naive, but I wonder why this sort of vibration can't be addressed with shock absorbers in the seats?
> I wonder why this sort of vibration can't be addressed with shock absorbers in the seats? Not at all naive, because it is addressed with shock absorbers in the seats; that is one of the very many tools NVH engineers use. :) But they're not 'shock absorbers' in the way you're thinking; the actual foams used in the car seats are specifically designed and selected to dampen certain frequencies. But, kind of like a spe…
The page uses the phrase "revolutionary structure". It's a fascinating pun to make about a wheel. I wonder if it's intentional.
However, there is still the problem of getting rid of "a flexible load-bearing structure made from glass fiber reinforced plastic (GFRP)".
I would hope there is a way to degrade, reclaim or reuse these materials.
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> europeans started to like big cars too I saw a documentary on this once where they interviewed some psych guy who was advising the car industry. He said that it took him some time to convince them to make everything ridiculously big. Not just the car, but the lights etc. It was based on his theory that when we first see something we evaluate it using the bit of our brain that has been there since we were lizards. A…
Yeah the role of marketing in influencing public opinion should not be discounted.
I get that "no punctures means less waste", and "Every year, 20%* of tires are discarded as scrap due to flats and rapid pressure loss (12%) or irregular wear and tear caused by poor tire pressure (8%), i.e., the equivalent of 200 million tires, or 2 million tonnes*. That’s 200 times the weight of the Eiffel Tower." However, there is still the problem of getting rid of "a flexible load-bearing structure made from gla…
Plasma gasification
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Air-less tires have been working fine for decades: https://www.nasa.gov/specials/wheels/ You'll also find industrial equipment examples like https://www.sourceproequipment.com.au/crocodile-skid-steer-b... As the person you're replying to said, though, the problem for passenger cars is NVH. They aren't quiet. Even with that downside, though, they are still used in consumer-facing applications like some bike sharing pr…
What the hell, I've been looking for something like this for the past few months. Only ones I could find were Tannus (too soft) and Schwalbe (garbage). Don't care about weight, noise, ride quality, just need unbreakable tires because riding through neighborhoods where people break glass bottles on the bike paths will make me smash someone's head with one someday.
https://www.continental-tires.com/bicycle/tires/race-tires/g...
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Nah...americans like big cars and manufacturers followed the sales! Even worse, europeans started to like big cars too...I just don't get why people like to drive big SUVs in the city.
There’s some truth to that – remember the surveys where parents said that they could imagine driving an SUV but not a minivan if they divorced & were dating again? – but they were also subsidized. If the price of gas wasn’t artificially low, or they had to meet the same safety and pollution standards as everything else, they’d be less popular. We did at least close the Hummer tax write-off, but we should be doing mor…
99% of the "SUVs" you see today are CUVs, which in turn are barely more than a lifted sedan.
So the difference is gas milage is miniscule, to the point gas prices will no longer affect the sales of the most successful SUVs
Former automotive engineer chiming in. "Tweels" have been around a long time, but have always failed in terms of "NVH" (noise, vibration, harshness). Michelin is claiming that this generation of tweels are appropriate for passenger cars, which means that they think they've solved the NVH problem. They seem to be marketing these alongside EVs, I wonder if they're only really intended for lighter, compact-style cars. (…
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Air-less tires have been working fine for decades: https://www.nasa.gov/specials/wheels/ You'll also find industrial equipment examples like https://www.sourceproequipment.com.au/crocodile-skid-steer-b... As the person you're replying to said, though, the problem for passenger cars is NVH. They aren't quiet. Even with that downside, though, they are still used in consumer-facing applications like some bike sharing pr…
What the hell, I've been looking for something like this for the past few months. Only ones I could find were Tannus (too soft) and Schwalbe (garbage). Don't care about weight, noise, ride quality, just need unbreakable tires because riding through neighborhoods where people break glass bottles on the bike paths will make me smash someone's head with one someday.
I switched to Continental Grand Prix 4 Season and haven't had a flat in 2 years in Portland, OR (though my frequency is down with the pandemic).