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Forum: General Efficiency Discussion Yesterday, 10:41 AM
Replies: 989
Views: 75,155
Posted By Piotrsko
Not seeing lead deposits on valves for perhaps 20...

Not seeing lead deposits on valves for perhaps 20 years, the faces I have seen black as well as the not moving through guide portions of the stems. The black coating is rather thin.

Egr systems...
Forum: Aerodynamics Yesterday, 10:36 AM
Replies: 36
Views: 1,237
Posted By aerohead
' balance beam '

here's some considerations:
1) in order to guarantee reliable quanta, you'd be looking at, at least, 40%-scale models.
2) considering the depreciation in the value of the US Dollar between 1990 and...
Forum: EcoModding Central Yesterday, 06:52 AM
Replies: 17
Views: 1,661
Posted By Logic
Reduction of Exhaust Noise by Means of Thermal...

Reduction of Exhaust Noise by Means of Thermal Acoustics
"...We observe about 2 dB decrease of the OA dB value when the gas temperature decreases of about 100°C..." ...
Forum: General Efficiency Discussion 05-19-2024, 04:36 PM
Replies: 12
Views: 224
Posted By freebeard
What about it? It needs A-B-A testing. Of...

What about it? It needs A-B-A testing.

Of course it only works with approx. vertical windshields. The Beetles max camber is at the B-pillar so it's in a positive pressure gradient. It's a wing not...
Forum: General Efficiency Discussion 05-19-2024, 12:14 PM
Replies: 989
Views: 75,155
Posted By JSH
The 1.3L engine in the Trax has been around since...

The 1.3L engine in the Trax has been around since 2018. It is used in everything from small crossovers like the Trax to full size cars like the Buick Lacrosse.

Small direct injection turbos are...
Forum: General Efficiency Discussion 05-19-2024, 01:43 AM
Replies: 12
Views: 224
Posted By Isaac Zachary
Nice dash cooler!

Nice dash cooler!
Forum: General Efficiency Discussion 05-19-2024, 01:19 AM
Replies: 12
Views: 224
Posted By freebeard
https://i.ebayimg.com/images/g/0UQAAOSw6XZf3jC-/s-...

https://i.ebayimg.com/images/g/0UQAAOSw6XZf3jC-/s-l400.jpg
Forum: General Efficiency Discussion 05-18-2024, 08:59 PM
Replies: 989
Views: 75,155
Posted By freebeard
Driving the amphibious TVR Scamander into...

Driving the amphibious TVR Scamander into Blackpool for its first MOT in 12 years.. (https://www.youtube.com/watch?v=Pn3DT_Wjt0U)
A few seconds in the water at 17:08 (https://youtu.be/b-81RbBkjsw)
Forum: General Efficiency Discussion 05-18-2024, 06:12 PM
Replies: 12
Views: 224
Posted By freebeard
Not sure I follow, let's ask Wikipedia: ...

Not sure I follow, let's ask Wikipedia:

en.wikipedia.org/wiki/Atmospheric_window (https://en.wikipedia.org/wiki/Atmospheric_window)



Now let's ask Ecomodder:...
Forum: General Efficiency Discussion 05-18-2024, 03:59 AM
Replies: 12
Views: 224
Posted By freebeard
https://ecomodder.com/forum/member-freebeard-album...

https://ecomodder.com/forum/member-freebeard-albums-vw-picture7307-100-1040.jpg

Safari windows front and rear, pop-outs and an oversized swamp cooler.
Forum: Fossil Fuel Free 05-17-2024, 11:00 AM
Replies: 102
Views: 17,498
Posted By samwichse
To be clear, we got the plug-in hybrid model. It...

To be clear, we got the plug-in hybrid model. It takes gas when you're out of EV range. IIRC the vast majority were sold as PHEVs. There were a limited number of EV versions (terrible range for...
Forum: The Lounge 05-16-2024, 12:15 AM
Replies: 1,444
Views: 104,837
Posted By redpoint5
I'll watch it despite the idiotic quote.

I'll watch it despite the idiotic quote.
Forum: General Efficiency Discussion 05-14-2024, 09:00 PM
Replies: 989
Views: 75,155
Posted By JSH
Big wheels and amphibious ...

Big wheels and amphibious

https://www.2luxury2.com/wp-content/uploads/2024/02/H2O-Amphibious-Amphibious-Cars-.jpg
https://h2oamphibious.com/products-2/#/

Or go old school with an amphicar
...
Forum: General Efficiency Discussion 05-14-2024, 07:31 PM
Replies: 989
Views: 75,155
Posted By redpoint5
You just need bigger tires. ...

You just need bigger tires.

https://www.youtube.com/watch?v=wTkmTGsaJqg
Forum: General Efficiency Discussion 05-14-2024, 04:17 PM
Replies: 989
Views: 75,155
Posted By freebeard
Where my amphibian? Where?

Where my amphibian? Where?
Forum: General Efficiency Discussion 05-14-2024, 12:49 PM
Replies: 989
Views: 75,155
Posted By Isaac Zachary
Modern day cars are consolidating. Diversity in...

Modern day cars are consolidating. Diversity in general is waning. All cars are evolving into crossovers. The sports car is now a crossover, the family hauler is now a crossover, the econo car is now...
Forum: Aerodynamics 05-13-2024, 09:38 PM
Replies: 36
Views: 1,237
Posted By freebeard
Else aerohead's half-body in profile with...

Else aerohead's half-body in profile with inadequate fineness ratio.

My geodesic approximation of the half body is asymmetrical on two planes.
...
Forum: General Efficiency Discussion 05-13-2024, 06:39 PM
Replies: 989
Views: 75,155
Posted By JSH
Pontiac is not coming back and the fine print at...

Pontiac is not coming back and the fine print at the bottom of that page says the "ad" is fake. It is Car & Driver trying to fill there pages even on a reduced 6 issues a year schedule.

Pontiac...
Forum: Aerodynamics 05-13-2024, 06:35 PM
Replies: 16
Views: 345
Posted By j-c-c
Using a Shuttle engineer(s) that has nearly...

Using a Shuttle engineer(s) that has nearly relatively zero concern for drag and with an airframe that seldom if ever operates below 200mph for mere seconds on flare with extreme UV, temperature and...
Forum: Aerodynamics 05-13-2024, 06:24 PM
Replies: 36
Views: 1,237
Posted By j-c-c
IMO to retain some authenticity to the "teardrop"...

IMO to retain some authenticity to the "teardrop" moniker, seems at the least the overall shape needs to be nonsymmetrical on at least one plane.
Forum: Aerodynamics 05-13-2024, 05:15 PM
Replies: 16
Views: 345
Posted By j-c-c
The ultimate anti teardrop sub 100mph Cybertruck...

The ultimate anti teardrop sub 100mph Cybertruck has wipers designed by Shuttle engineers?

That makes sense to me.:rolleyes:
Forum: Aerodynamics 05-13-2024, 02:32 PM
Replies: 16
Views: 345
Posted By aerohead
' aircraft '

Tesla got the folks who built the wipers for the Space Shuttle to design the Cybertruck's unit.:)
Forum: Aerodynamics 05-13-2024, 02:31 PM
Replies: 36
Views: 1,237
Posted By freebeard
Aren't all cylinders rectangular? Excepting...

Aren't all cylinders rectangular? Excepting [s]non-parallel[/s[ right angle end caps?

My point had to do with putting a balance beam with two models in a wind tunnel. (Or on a platform on a moving...
Forum: Aerodynamics 05-13-2024, 02:25 PM
Replies: 16
Views: 345
Posted By j-c-c
That problem is of little concern to me, as I...

That problem is of little concern to me, as I tend to stay under 200mph in the rain , and seldom take my Lambo out in it.

Seriously, we should be looking to aircraft wipers for inspiration on this...
Forum: General Efficiency Discussion 05-12-2024, 11:46 PM
Replies: 989
Views: 75,155
Posted By JSH
Not just on the block - confirmed dead in...

Not just on the block - confirmed dead in November 2024. GM is retooling Fairfax Assembly to make the next gen Bolt EV.
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