Model Y vs. EV6 Cd Analysis

[Logic]

Originally Posted by Piotrsko

Annnnddd being a test tech, where and how you put your sense devices, even the sense method, affects what data you get.

You and I measure fuel economy in mpg etc.
Both on the highway AND in town.
(you know town: where 98% of all driving happens)

The rest you leave to research labs.
Then you read their peer reviewed, published (= White-balled = fact) research.

Or you try start an in depth argument to obfuscate the basic, fundamental facts.
Good luck with that.

[aerohead]

Originally Posted by Logic

You and I measure fuel economy in mpg etc.
Both on the highway AND in town.
(you know town: where 98% of all driving happens)

The rest you leave to research labs.
Then you read their peer reviewed, published (= White-balled = fact) research.

Or you try start an in depth argument to obfuscate the basic, fundamental facts.
Good luck with that.

In the USA, 55% is 'CITY', 45% is 'HIGHWAY' for the EPA 'COMBINED.'
Which would have no bearing on some motorists, whose driving is mostly highway, at up to 85-mph ( 136.7-km/h )
'Context'

[Logic]

Originally Posted by aerohead

In the USA, 55% is 'CITY', 45% is 'HIGHWAY' for the EPA 'COMBINED.'
Which would have no bearing on some motorists, whose driving is mostly highway, at up to 85-mph ( 136.7-km/h )
'Context'

Context is exactly it:
In this context:
Model Y vs. EV6 Cd Analysis why is one Cd better than the other.

One may have an aluminum flat bottom, while the other doesn't.
That one may do better on the freeway, while the other does better in town, despite its higher Cd, thx to less weight.
(and possibly due to a cooler exhaust or something)

[aerohead]

Originally Posted by Logic

Context is exactly it:
In this context:
Model Y vs. EV6 Cd Analysis why is one Cd better than the other.

One may have an aluminum flat bottom, while the other doesn't.
That one may do better on the freeway, while the other does better in town, despite its higher Cd, thx to less weight.
(and possibly due to a cooler exhaust or something)

We'll never know unless someone investigated it and reported.

[Logic]

Originally Posted by aerohead

We'll never know unless someone investigated it and reported.

AH!

Do you mean "someone" like me who investigated and reported on Boric Acid in engine oil, or do you mean "someone" like a research institute who got the research peer reviewed (white-balled) so they could publish it..?
As neither seem to matter a jot to you and you, yourself don't seem to consider yourself to be a "someone", I'm at a loss to what you mean..?

[Xist]

I'm at a loss as to what your point is and what it has to do with this thread.

[freebeard]

Good -- it sounds like you're focusing on your edumacation.

This is spillover from a thread about what does or does not mitigate engine wear.

[aerohead]

Originally Posted by Logic

AH!

Do you mean "someone" like me who investigated and reported on Boric Acid in engine oil, or do you mean "someone" like a research institute who got the research peer reviewed (white-balled) so they could publish it..?
As neither seem to matter a jot to you and you, yourself don't seem to consider yourself to be a "someone", I'm at a loss to what you mean..?

If you can wrangle the two cars and cover the $4,000/hour for the full-scale wind-tunnel testing, go for it! Plan on perhaps, two weeks ( $320,000 )
You'll never have access to the CFD and supercomputer tools carmakers use unless you were in a graduate engineering program, if that. ( Also $320,000 )
The two trips I made to the wind tunnel bankrupted me.

[Logic]

Originally Posted by aerohead

If you can wrangle the two cars and cover the $4,000/hour for the full-scale wind-tunnel testing, go for it! Plan on perhaps, two weeks ( $320,000 )
You'll never have access to the CFD and supercomputer tools carmakers use unless you were in a graduate engineering program, if that. ( Also $320,000 )
The two trips I made to the wind tunnel bankrupted me.

Yes; that's a large price to pay for 'someone' to figure out if their mods have improved economy.
Personally; I'd see for myself by logging before/after fuel consumption,
both in town (urban) and on the highway.
I believe that that's what most 'someones' here do. (Urban cycle excepted... mostly )

As you say car makers employ wind tunnels.
They do so during development, then make changes and retest. Development...
Did you make any changes to your vehicle during or after your tests based on what was learned?
If not; why go to the expense..?
The only reason car makers might logically do so is for advertising shots...

[freebeard]

Did you make any changes to your vehicle during or after your tests based on what was learned?

PhilYouTube1

Don't ask who that guy is in front.