bkanber

8 ms·

31.
by bkanber 5y ago
Bridgestone said bike tweels were close 4 years ago, and then again 2 years ago... I won't hold my breath! :)
32.
by bkanber 5y ago
My cold tire pressure is supposed to be 33PSI, my TPMS doesn't alert until it's below 28PSI, so there is a significant delta still. The TREAD law does not specify when TPMS must alert, other than the tire being 'significantly
33.
by bkanber 5y ago
Because this is primarily a materials science problem, and we are still novices at materials science.
34.
by bkanber 5y ago
Overinflated tires will always have better economy than underinflated, all other things being equal. My guess is the average vehicle owner could improve overall fuel economy by about 0.5-1.0% by making sure their tires are at the correct pr
35.
by bkanber 5y ago
> The companies will advance feasibility studies seeking to make this new tire available in market by 2019. Given that I haven't seen tweels for bicycles yet, I assume the feasibility studies did not go well. It also looks like they
36.
by bkanber 5y ago
Tweels are probably too heavy to be viable on bicycles.
37.
by bkanber 5y ago
The only little clue is that one photo of the EV where the sidewalls are visible on the tires. You have to squint to see it :)
38.
by bkanber 5y ago
Ride comfort on tweels has historically been poor. But Michelin seems to be claiming they've solved that problem for this generation.
39.
by bkanber 5y ago
Sidewalls are critical for NVH at higher speeds, as well as fuel economy. But a demo of a tire on a car going 55 mph doesn't make sense, so they are able to remove the sidewalls for these stationary photoshoots and low speed rolling te
40.
by bkanber 5y ago
The issue with tweels is generally the unsprung mass, not the sprung mass. In general they will want to install tweels on vehicles with lower unsprung mass, which means smaller form factor (again, in general). And I should have been a littl
41.
by bkanber 5y ago
For the same form factor, yes that's true.
42.
by bkanber 5y ago
For a passenger vehicle application, these tweels will have sidewalls. You don't hit highway speeds on your quad and that makes all the difference. In fact you can see that the photo of the EV on their site has sidewalls.
43.
by bkanber 5y ago
As a general rule, tweels are worse for fuel consumption -- they are both heavier and have more rolling resistance. (Edit: weight automatically adds rolling resistance, but so does flexion, which tweels have more of. So tweels are a double-
44.
by bkanber 5y ago
At some point they will be viable... whether this is that point or not is yet to be seen.
45.
by bkanber 5y ago
These tires do have sidewalls. The sidewalls are removed for marketing and demonstration purposes only.
46.
by bkanber 5y ago
They were around years ago; Michelin's first tweel was developed in 2004.
47.
by bkanber 5y ago
These tires have sidewalls, the spokes are not exposed. Without sidewalls these tires would be very loud on the highway, and would have a much higher rolling resistance.
48.
by bkanber 5y ago
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 fo
49.
by bkanber 5y ago
Mars rovers already use tires like these.
50.
by bkanber 5y ago
git checkout abcd1234 ./build.sh && ./deploy.sh I don't see the issue.
51.
by bkanber 5y ago
Yes. In my eyes, the original Lyme vaccine was the first casualty of the modern anti-vax movement. They claimed that the vaccine gave them Lyme when really the vaccine gave them an immune response for a few days... as vaccines should. Throu
52.
by bkanber 5y ago
There used to be a human vaccine for Lyme, but it was pulled from market about 20 years ago. Interestingly, this Lyme vaccine was one of the first victims of the modern anti-vax movement.
53.
by bkanber 5y ago
Mosh is very popular. Most devs I know personally have used it at one point or another in their careers.
54.
by bkanber 5y ago
Gurl jrer cebgbaf, evtug? Fb gurl ernyyl pna bayl nssrpg guvatf nebhaq gung znff naq raretl enatr. Gurl pna zrff jvgu cnegvpyr nppryrengbe rkcrevzragf ohg pna'g nssrpg gur znpeb jbeyq.
55.
by bkanber 5y ago
> unless the aliens started out right next door (like in Alpha Centauri) :D Strongly recommended reading.
56.
by bkanber 5y ago
Playing house in this context is negative. It means that you're/they're playing dress-up and tidying rooms without actually doing the meaningful and important startup work. PG = Paul Graham, the guy who started YCombinator an
57.
by bkanber 5y ago
I absolutely love Godot, and I've used them all. The only reason not to use Godot is if you're already entrenched in one of the other engines' ecosystems, like if you're working in a large team that already has proces
58.
by bkanber 5y ago
"Dude" has been a genderless term for like a decade now. > For each analogy you make, I can counter it with one that proves it's bullshit. This sounds like a fun game, but count me out. > I haven't met anyone on th
59.
by bkanber 5y ago
You definitely missed my point. Products do not have to be named in a semantically correct, technical and pedantic manner. SpaceX isn't advertising flights to Alpha Centauri, so what's the problem? The entire world knows that actu
60.
by bkanber 5y ago
Are q-tips shaped like a Q? Are Ford Explorers actually used for exploring? Is the Magic Bullet a type of ammunition that kills magical creatures? Is Wonderbread really wonderful?

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