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Forum: Aerodynamics Today, 04:06 PM
Replies: 198
Views: 7,430
Posted By JohnForde
Ha! Ive never seen one over a roll up back door. ...

Ha! Ive never seen one over a roll up back door.

It's OK where it is. It just needs a cover.
Forum: The Lounge Today, 02:09 PM
Replies: 635
Views: 39,753
Posted By redpoint5
I often refer to it as the Uniparty also, but...

I often refer to it as the Uniparty also, but with regard to spending, which is the same as expanding government authority. The parties argue over who should be doing the oppressing, not whether to...
Forum: Fossil Fuel Free Today, 02:08 PM
Replies: 124
Views: 13,187
Posted By Logic
He has a whole lot of videos looking at all sorts...

He has a whole lot of videos looking at all sorts of 'this vs that' with well documented results:
https://www.youtube.com/@ProjectsWithDave/search?query=bifacial
Forum: Aerodynamics Today, 12:01 PM
Replies: 198
Views: 7,430
Posted By JohnForde
Hoping the bottom modifications fix my drag so I...

Hoping the bottom modifications fix my drag so I can get numerical improvement.

Thanks Aerohead,

JF
Forum: Aerodynamics Today, 10:31 AM
Replies: 58
Views: 2,192
Posted By aerohead
' wallowed out '

This happened with Spindletop. Honda's 13-inch. pressed-steel wheels deformed enough during driving to eat away at the six fastening holes, with 6mm hex-cap screws, drilled and tapped into the rim,...
Forum: Fossil Fuel Free Today, 10:18 AM
Replies: 49
Views: 5,021
Posted By aerohead
' someone '

It's completely automated. Analog-to-digital signals of voltage/ frequency falling towards a programmed threshold triggers the directional power-electronics to 'balance' the grid.
Even a cloud...
Forum: Hybrids Today, 06:30 AM
Replies: 30
Views: 995
Posted By JSH
The Ranger likely hurts Ford's CAFE instead of...

The Ranger likely hurts Ford's CAFE instead of helping. Almost the same mpg as a F150 but smaller footprint so higher MPG requirement.

The Maverick will help a lot especially now that the have...
Forum: Alternative Transportation Today, 04:05 AM
Replies: 13
Views: 1,094
Posted By Logic
Oh ye; He shows a steering system too: ...

Oh ye; He shows a steering system too:
https://www.youtube.com/watch?v=ysS5IErzXb0&t=10s

NB that the wheel can easily be enclosed by putting a cover on the 1st er... bell I spoze you'd call it....
Forum: Alternative Transportation Today, 03:38 AM
Replies: 13
Views: 1,094
Posted By Logic
Hub Motor as fully active, in wheel suspension: ...

Hub Motor as fully active, in wheel suspension:
https://www.youtube.com/watch?v=qxKJu_-0rUA

This would mean everything that is unsprung weight, except the rim and tire moves over to better than...
Forum: General Efficiency Discussion Today, 01:41 AM
Replies: 7
Views: 203
Posted By cRiPpLe_rOoStEr
I can relate to that :turtle:

I can relate to that :turtle:
Forum: Aerodynamics Yesterday, 10:38 PM
Replies: 198
Views: 7,430
Posted By ennored
Tufts do look very nice (to my untrained eye -...

Tufts do look very nice (to my untrained eye - just making sure no one thinks I'm some sort of expert). Some disturbance around the edges, top and bottom, but that's to be expected, air will spill...
Forum: Aerodynamics Yesterday, 12:22 PM
Replies: 198
Views: 7,430
Posted By freebeard
I'd say the opposite curve.

I'd say the opposite curve.
Forum: EcoModding Central Yesterday, 10:25 AM
Replies: 4
Views: 129
Posted By bandit86
Warm air is easier to pump, but pressurised air...

Warm air is easier to pump, but pressurised air from high pressure area such as hood/windshield area? Easier to pump if it wants to flow
Forum: Aerodynamics Yesterday, 09:49 AM
Replies: 198
Views: 7,430
Posted By JohnForde
My plan is to eliminate the pie piece by lowering...

My plan is to eliminate the pie piece by lowering the floor. (Cheap temporary foam)

Should I trim up the sides as in this photo?
Forum: Aerodynamics Yesterday, 08:36 AM
Replies: 13
Views: 255
Posted By Logic
Quite so freebeard, so I'm wondering how much of...

Quite so freebeard, so I'm wondering how much of the flow that normally exits under the car would be vacuumed out through the roof vent and what it would do to/for aero and the unwanted lift..?

In...
Forum: Fossil Fuel Free Yesterday, 08:31 AM
Replies: 124
Views: 13,187
Posted By oil pan 4
After more testing my approximately 15 degrees...

After more testing my approximately 15 degrees tilt neted up to 10% more daily power. That's still only like $4 or $5 per panel more per year.
During the summer I may not get little if any more...
Forum: Fossil Fuel Free Yesterday, 06:51 AM
Replies: 12
Views: 903
Posted By Logic
Yep. Judging from all the 'look at how much...

Yep.
Judging from all the 'look at how much more power on normal old solar stands' videos there are on YouTube they do seem to do quite a lot better thx to just normally reflected light.
There's...
Forum: Aerodynamics Yesterday, 06:29 AM
Replies: 4
Views: 172
Posted By Vekke
Boots arrived and they are shape wise as good as...

Boots arrived and they are shape wise as good as I estimated. One problem migth be that the tip of the rubber boot migth be too stiff. It flexes but takes reasonable force to do that....
Forum: Hybrids Yesterday, 05:06 AM
Replies: 30
Views: 995
Posted By JSH
Yes the Lightning is expensive but the average...

Yes the Lightning is expensive but the average transaction price for a new full size truck is $65,000 today. I'd say the problem is range. People buy trucks today as all purpose family vehicles. ...
Forum: Hybrids Yesterday, 05:01 AM
Replies: 30
Views: 995
Posted By JSH
Wrapping fines into the purchase price has been...

Wrapping fines into the purchase price has been the standard way of doing business for luxury car manufacturers like BMW, Mercedes, and Porsche for decades. However that only works for some fines. ...
Forum: EcoModding Central Yesterday, 03:14 AM
Replies: 0
Views: 47
Posted By Logic
Magneto-Hydrodynamic (MHD) electricity from exhaust

Energy Recovery from Engine Exhaust Using Magneto-Hydrodynamic (MHD)
Principle
"...we have fabricated a small device working on MHD
principle, to generate electricity using the engine exhaust...
Forum: Aerodynamics Yesterday, 12:16 AM
Replies: 198
Views: 7,430
Posted By Piwoslaw
Great that you were able to tuft test! It clears...

Great that you were able to tuft test! It clears a few things up.

For example, seeing that the flow seems attached everywhere except behind the wheels, so maybe rear wheel skirts would help?
Forum: Aerodynamics 09-05-2024, 11:47 PM
Replies: 198
Views: 7,430
Posted By JohnForde
I think Aerohead may be right. about vortices...

I think Aerohead may be right. about vortices down low. In the third pic the yarn in the yellow circle is angled downward at the rear corner.

I am pleased that the Zevo seems to have attached...
Forum: Aerodynamics 09-05-2024, 10:18 PM
Replies: 13
Views: 255
Posted By Logic
Looking at the pressure over a car's body; the...

Looking at the pressure over a car's body; the lowest pressure is the front of the roof.
(Easy to see where a radiator vent should exit too)...
Forum: Fossil Fuel Free 09-05-2024, 03:09 PM
Replies: 49
Views: 5,021
Posted By freebeard
Someone has their hand on a switch somewhere.

Someone has their hand on a switch somewhere.
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