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Forum:
Hybrids
Yesterday, 08:59 PM
Replies:
1
Range Extender: Matching power and torque to suite the generator
Views:
24
Posted By
Logic
Range Extender: Matching power and torque to suite the generator
This paper is interesting in that it goes into the details of modding a 250cc motorbike engine to suite the chosen generator so that you end up with a light, compact and efficient genset for your...
Forum:
EcoModding Central
Yesterday, 10:04 AM
Replies:
1
Regenerative Suspension System Research etc Links.
Views:
52
Posted By
Logic
Regenerative Suspension System Research etc Links.
The ease with which one can stick magnets to a shock absorber and surround that field with copper wire windings makes Regenerative Suspensions/shocks enticing.
Rectify each coil's output and feed...
Forum:
General Efficiency Discussion
05-20-2024, 10:41 AM
Replies:
991
Small / economy car deathwatch: we've passed "peak econobox" again
Views:
75,399
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
05-20-2024, 10:36 AM
Replies:
36
Brilliant way to visualise/see air/fluid flow
Views:
1,269
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
05-20-2024, 06:52 AM
Replies:
17
Water cooled exhaust manifold: better economy
Views:
1,695
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
Passive passenger compartment cooling
Views:
253
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:
991
Small / economy car deathwatch: we've passed "peak econobox" again
Views:
75,399
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
Passive passenger compartment cooling
Views:
253
Posted By
Isaac Zachary
Nice dash cooler!
Nice dash cooler!
Forum:
General Efficiency Discussion
05-19-2024, 01:19 AM
Replies:
12
Passive passenger compartment cooling
Views:
253
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:
991
Small / economy car deathwatch: we've passed "peak econobox" again
Views:
75,399
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
Passive passenger compartment cooling
Views:
253
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
Passive passenger compartment cooling
Views:
253
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
Honda Clarity plug in: World's ugliest car
Views:
17,507
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
The climate change movement: July 28, 1995 to August 14, 2020 RIP
Views:
104,946
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:
991
Small / economy car deathwatch: we've passed "peak econobox" again
Views:
75,399
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:
991
Small / economy car deathwatch: we've passed "peak econobox" again
Views:
75,399
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:
991
Small / economy car deathwatch: we've passed "peak econobox" again
Views:
75,399
Posted By
freebeard
Where my amphibian? Where?
Where my amphibian? Where?
Forum:
General Efficiency Discussion
05-14-2024, 12:49 PM
Replies:
991
Small / economy car deathwatch: we've passed "peak econobox" again
Views:
75,399
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
Brilliant way to visualise/see air/fluid flow
Views:
1,269
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:
991
Small / economy car deathwatch: we've passed "peak econobox" again
Views:
75,399
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
Conventional vs Beam Wiper Blades aerodynamic?
Views:
357
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
Brilliant way to visualise/see air/fluid flow
Views:
1,269
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
Conventional vs Beam Wiper Blades aerodynamic?
Views:
357
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
Conventional vs Beam Wiper Blades aerodynamic?
Views:
357
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
Brilliant way to visualise/see air/fluid flow
Views:
1,269
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...
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