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It doesn't really matter, does it? The rate of evaporation is irrelevant to the problem. Mr. Potato could have waited a year, or dried them on the Uyuni salt plains.
Why do you care? Would this distraction affect your ability to solve the problem?
I actually get annoyed at people who are pedantic about these things. Precision is important in some conversations, but just elitist in other.
Anyway, the term “weight” to refer to mass outdates its use as a force - its only since Newton that we distinguish the two, after all.
And a very dishonest portrayal of the October Crisis, a time when English Canada was shocked that PET would go so far to stop the FLQ.
A journo even asked PET how far he was willing to go to rid Quebec of the FLQ and got the famous answer: “just watch me”
No, PET knew he was violating the basic principles of Canadian freedom, but didnt care.
You dont add mass just to lower CoM. And downforce from added mass sucks: the downforce, Fn = mg, from weight cancels out
Slam on the breaks. Traction is F = u m g. acceleration is F/m = a
M cancels out so weight doesnt help you. It appears to come out even though.
Except it doesnt cancel out. Traction scales sub linearly. So your stopping times go up.
Same thing for every part of the track.
Corner? Turning torque is proportional to mass. Traction is sub linear to mass.
Acceleration in a straight? Power is constant wrt mass so accel is inverse proportional to mass.
And to all of this you have to add the aero effect which add to mass downforce and aren’t proportional to mass.
So traction becomes:
Ff = u(Fn) = u(mg + kv^2)
For high speeds v^2 dominates so Ff is constant with m so:
A = Ff/m.
Or acceleration is inversely proportional to mass for any driver action.
What rules of physics do you propose we use? Ones where dead weight makes you faster? In the ideal case weight cancels out. But it doesn't, it forces you to take corners slower.
But hey, if you don't believe the math, watch an F1 race how the lap times drop and tyre life extends as they use up their fuel.
Theres also a few M3 reports, but I cant tell which ones are stock
https://www.alvolante.it/news/alfa-romeo-giulia-quadrifoglio...
Also, consider that the weight penalty for an EV four door is less than for a two door. Which makes sense, electric propulsion has always made sense for heavier vehicles
Lauda almost killed himself there. Toto Wolf almost killed himself there.
Are you sure you know the Nordschlieffe better than those two blokes?
A race tire is
1. slick
Even the slightest moisture will result in hydroplaning and loss of control. Today’s F1 race was a good example of how the cars go from behaving like their on rails glued to being on ice from a drizzle.
2. made of a special rubber compound
Race tires feel like plastic, not rubber, until they are at temperature. Their operating T is above boiling.
To get to T, you have to drive like a maniac in a way no one has ever driven on streets (seriously, you wont make a live a few km driving the way you have to to keep the tires warm)
3. very wide
Makes them very difficult to handle. Also makes hydroplaning much easier (see point 1)
4. wear out in 100 km.
Number 4 i don't think needs an explanation.
However, if you’re on a dedicated race track these same tires are like putty when they’re used properly and will withstand 6 G of lateral force.
To give you an idea of the grip, a coasting F1 decelerates harder than your road car if you slammed on the breaks. Your road car’s braking performance is limited only by your tire grip.
“ The point is battery electric propulsion is clearly in the realm of supercars today. Here's an example:”
No, they dont. They can only compete on a very restricted space: straight line speed, or a single lap. The competition is always tailored to deal with the same problem: they’re heavy.
“ The VW ID.R completed its lap in 365 seconds. That's an average of 1 km every 17.55 seconds. Add on the extra 35 seconds for the extra 2 km, or even add on an extra 45 seconds, and the ID.R still beats Niki. Sorry.”
You either break the record or you don't. Theres no “could possibly if I do a linear fit”.
Linear fit? Really?
But lets keep it linear. Niki’s record is 45 years old on a longer, more difficult track on a car made to last a 2 hr race and not custom built for that one track, and not made of carbon fiber.
Im supposed to be impressed compared to the Ferrari?
Here’s F1 dirty secret:
Since the 1930s (!!) the cars have been faster than human reflexes. F1 rules, for almost 100 years, have been about slowing the cars down.
Good for VW, great accomplishment, but its good for an electric car. Good despite being an electric car. Good for within their competition space. But the ICE has too much of a weight advantage.
The really hot stuff have sensors themselves, so if anything else is hot it will be revealed in the exhaust
It seems I should be more concerned about the proximate threat.
I’m sure I eat, on average, at least 6 oz/ day. I estimate I eat anywhere between 50-100 kg/ year or somewhere between 5-10 oz a day. Probably closer to around 7. Or about three times your estimate.
Ya, my dad in Canada keeps encouraging me to buy property given the mortgages. Has its downsides, but over all its brilliant.
The difference every time I bought a house was about 1%