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Forum: General Efficiency Discussion 01-17-2023, 11:32 PM
Replies: 37
Views: 2,505
Posted By cRiPpLe_rOoStEr
In my country, the driver licensing test is done...

In my country, the driver licensing test is done with manual transmission, unless the car is adapted for disabled drivers (actually some cars adapted for disabled drivers here are still fitted with...
Forum: General Efficiency Discussion 01-12-2023, 03:57 PM
Replies: 37
Views: 2,505
Posted By JSH
Yes, CAFE standards work. When we force...

Yes, CAFE standards work. When we force manufacturers to make vehicles that get better fuel economy they do. They don't focus on fuel economy on their own because fuel economy isn't important to...
Forum: Aerodynamics 01-09-2023, 01:51 PM
Replies: 11
Views: 819
Posted By aerohead
why called

It was Cd 0.51, compared to Cd 0.683, for the car it descended from.
They got to Cd 0.244, but that was only for information, no intention of manufacture.
Forum: Aerodynamics 01-09-2023, 01:47 PM
Replies: 11
Views: 819
Posted By Phase
Why’s it called the airflow? The cd of that looks...

Why’s it called the airflow? The cd of that looks like it would be 0.83 lol. So much turbulence and detached flow and early separation and a huge wake
Forum: General Efficiency Discussion 01-08-2023, 11:38 PM
Replies: 37
Views: 2,505
Posted By rmay635703
Instead the US does exactly the opposite to...

Instead the US does exactly the opposite to consumers
Penalizing fuel efficient vehicles with extra registration charges.

In areas with Cities kei car law and taxes on 4wd automatics would...
Forum: General Efficiency Discussion 01-08-2023, 09:48 PM
Replies: 37
Views: 2,505
Posted By Ecky
I won't pretend to be an expert on the auto...

I won't pretend to be an expert on the auto market here in NZ (yet), but it seems to me that, once imports of vehicles (newer than a certain date) that did not have traction control were banned, all...
Forum: Aerodynamics 01-08-2023, 01:45 PM
Replies: 11
Views: 819
Posted By freebeard
Hemmings Special Interest autos had an article on...

Hemmings Special Interest autos had an article on the Pentastar Star Cars that 404s, but I posted about it at Permalink #83...
Forum: Aerodynamics 01-02-2023, 01:33 PM
Replies: 39
Views: 2,859
Posted By Phase
45 is probably a little more efficient than 50,...

45 is probably a little more efficient than 50, especially with low rolling resistance tires. I only did a steady state run for 20 miles in my Ioniq at 50mph with cc on and I was getting 87-94mpg on...
Forum: Aerodynamics 01-02-2023, 10:17 AM
Replies: 39
Views: 2,859
Posted By Isaac Zachary
That is one thing that would probably help is...

That is one thing that would probably help is just being seen. One of the neighbor ladies that got killed liked to wear all black. A guy was turning left and as soon as he had a green light he ran...
Forum: Aerodynamics 01-01-2023, 11:46 PM
Replies: 39
Views: 2,859
Posted By Isaac Zachary
What if you have 6 neighbors that have been hit,...

What if you have 6 neighbors that have been hit, 4 of them killed, as they either walked or rode their bike, and only one was in the wrong? Do I even dare walk or ride my bike? My job is almost...
Forum: Aerodynamics 01-01-2023, 11:15 PM
Replies: 39
Views: 2,859
Posted By redpoint5
Waste is subjective. Should I shame people who do...

Waste is subjective. Should I shame people who do 50 because they could spend half the energy doing 30?

80 is at the boundary of what I find acceptable personally. What if the person doing 80 is...
Forum: Aerodynamics 01-01-2023, 08:49 PM
Replies: 39
Views: 2,859
Posted By Caddylackn
If you really want to make this a fair...

If you really want to make this a fair comparison, include all added yearly driving costs and assume she gets one speeding ticket a year or every other year.

Then jack up her insurance rates...
Forum: Aerodynamics 01-01-2023, 08:00 PM
Replies: 39
Views: 2,859
Posted By Isaac Zachary
I wish more would be done in my...

I wish more would be done in my town/country/world to favorbetter alternatives. The streets in my town are a pedestrian's/biker's nightmare. Reduce all the wide lanes on these streets to tight lanes...
Forum: Aerodynamics 01-01-2023, 07:19 PM
Replies: 39
Views: 2,859
Posted By Isaac Zachary
If only you could take everyone's car away for a...

If only you could take everyone's car away for a month and then tell then that if they want to have a car again it has to be governed to go no faster than 60mph and see what they'd say then.

I...
Forum: Aerodynamics 01-01-2023, 03:48 PM
Replies: 39
Views: 2,859
Posted By freebeard
Rolling resistance would be dominated by bearing...

Rolling resistance would be dominated by bearing and the contact patches.

Those likely vary by temperature, both ambient and internal (hot bearings and tires on a cold day vs cold on a hot day).
...
Forum: Aerodynamics 01-01-2023, 01:56 PM
Replies: 39
Views: 2,859
Posted By Phase
That chart says rolling resistance doesn’t change...

That chart says rolling resistance doesn’t change with speed, but in another thread peiple were saying it goes up with speed but just at a much smaller degree

Another confusing thing is that...
Forum: General Efficiency Discussion 01-01-2023, 12:23 PM
Replies: 37
Views: 2,505
Posted By freebeard
"I seem to be a verb" -- Richard Buckminster...

"I seem to be a verb" -- Richard Buckminster Fuller 1970
Forum: General Efficiency Discussion 12-31-2022, 04:47 PM
Replies: 37
Views: 2,505
Posted By me and my metro
You do realize that CAFE stands for corporate...

You do realize that CAFE stands for corporate average fuel economy. While making improvements they also limit sales on low fuel mileage models until they sell enough Metros each year. They also...
Forum: General Efficiency Discussion 12-31-2022, 02:01 PM
Replies: 37
Views: 2,505
Posted By freebeard
Everywhere and all the time. Robt. Anton Wilson...

Everywhere and all the time. Robt. Anton Wilson called them 'reality tunnels'. Sometimes they run parallel, other times they are at cross purposes.


True capitalism, like true communism, has...
Forum: General Efficiency Discussion 12-31-2022, 02:45 AM
Replies: 37
Views: 2,505
Posted By redpoint5
Please, educate me. Where on this graph did...

Please, educate me. Where on this graph did Reagan make fossil fuel consumption increase? Or, where on this graph did a blue-tie-wearing POTUS curb fossil fuel consumption?
...
Forum: General Efficiency Discussion 12-29-2022, 11:07 PM
Replies: 37
Views: 2,505
Posted By redpoint5
I'm surprised to see 0-60 was so terrible back in...

I'm surprised to see 0-60 was so terrible back in the day. I'd rather walk... Then again I do recall treating the throttle on the Beatle as an on/off switch. Had plenty of fun in that vehicle.
Forum: General Efficiency Discussion 12-29-2022, 11:01 PM
Replies: 37
Views: 2,505
Posted By freebeard
Corporate-government alignment works? What...

Corporate-government alignment works?

What may or may not happen in 2022 is not supported by the chart. It ends in 2020.

0-60 took a hit in 1978, but has risen more consistently since.

The...
Forum: General Efficiency Discussion 12-29-2022, 10:41 PM
Replies: 37
Views: 2,505
Posted By redpoint5
The difference in CO2 emissions between forcing a...

The difference in CO2 emissions between forcing a policy, and not, would get lost "in the noise".

I'm not saying we shouldn't strive towards efficiency, only that "saving" something only makes it...
Forum: General Efficiency Discussion 12-29-2022, 10:19 PM
Replies: 37
Views: 2,505
Posted By ME_Andy
How much of that is due to EVs becoming more...

How much of that is due to EVs becoming more common? Probably not much, yet. I think the USA is still only ~5% EV.
Forum: Aerodynamics 12-08-2008, 11:51 AM
Replies: 100
Views: 183,263
Posted By MetroMPG
Arrow Online tool: shows aerodynamic drag, rolling resistance, power required & est. MPG

Aerodynamic & rolling resistance calculator - EcoModder.com (http://ecomodder.com/forum/tool-aero-rolling-resistance.php)

Back in the day, krousdb made a spreadsheet to calculate aero & rolling...
Showing results 1 to 25 of 25

 
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