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Forum: Aerodynamics 03-19-2016, 12:51 PM
Replies: 47
Views: 9,267
Posted By aerohead
rigidity

*The ABS thermo-formed sheeting has no structural rigidity by itself and would flap like a bed sheet on a clothes line without some sort of corrugation to stiffen it.
*The automakers appear to be...
Forum: Aerodynamics 03-05-2016, 12:17 PM
Replies: 47
Views: 9,267
Posted By aerohead
undertail

My opinion is that these are just a styling gimmick.The strakes add reinforcement to the otherwise flimsy valance panel,providing some structural stiffening to prevent flutter caused by the wake....
Forum: Aerodynamics 02-02-2016, 04:55 PM
Replies: 47
Views: 9,267
Posted By aerohead
useful

We'd want to keep an eye on their model scale and tunnel velocities.Gopal & Senthilkumar for instance,used a 1/15-scale model which would require a 300-mph tunnel speed.The 1st problem is,if they...
Forum: Aerodynamics 01-21-2016, 07:50 PM
Replies: 47
Views: 9,267
Posted By ConnClark
Since they were comparing a digital model to a...

Since they were comparing a digital model to a wind tunnel model both being 1:10 they don't need to scale the air speed.

Also since the model(both digital and wind tunnel) was pretty much a joke...
Forum: General Efficiency Discussion 01-08-2016, 10:07 AM
Replies: 26
Views: 5,928
Posted By ksa8907
Spending money to make money? And on a cheap,...

Spending money to make money? And on a cheap, probably maintenance neglected vehicle. Seems like a bad idea to me.
Forum: Aerodynamics 12-12-2015, 05:11 PM
Replies: 32
Views: 6,402
Posted By gone-ot
2016 Prius smoke-test

Thoughts?

http://cimg8.ibsrv.net/gimg/www.carsdirect.com-gallery_site/1900x814/80-prius_windtunnel_be5a4061d399929068301eac6012a0f6aba2b75d_15cf8aa1b4474529b596413370a67715742d2a64.jpg

...
Forum: Aerodynamics 12-11-2015, 11:34 PM
Replies: 5
Views: 1,271
Posted By jamesqf
Considering that in my (admittedly limited and...

Considering that in my (admittedly limited and not recent) experience of commercial air travel, 99.9% of passengers would rather watch old TV reruns than look out the window, I doubt that this idea...
Forum: EcoModding Central 12-02-2015, 06:41 PM
Replies: 2
Views: 837
Posted By user removed
Under 3 cents a mile

Latest fill with gas @ $1.689 and 58.5 MPG, 575 watts per mile. $30 per 1k miles. It cost me $10 per 1k miles, in the summer of 1968 at 1 cent a mile in my Bugeye Sprite at 32 MPG and 32 cents a...
Forum: EcoModding Central 12-01-2015, 10:08 PM
Replies: 48
Views: 6,251
Posted By oil pan 4
Living in Maine all I ever had was RWD vehicles. ...

Living in Maine all I ever had was RWD vehicles.
I have found the RWD only suburban with open diff is almost always enough.
To make it enough with out going 4x4 I got an ARB air locker.
Forum: General Efficiency Discussion 11-27-2015, 12:15 PM
Replies: 27
Views: 4,851
Posted By Hersbird
I would say Toyota optimized it for the EPA test,...

I would say Toyota optimized it for the EPA test, real world be dammed. The EPA test doesn't cruise at freeway speeds. I really wish they had a EPA test that showed what a car used on flat ground,...
Forum: General Efficiency Discussion 09-28-2015, 08:48 AM
Replies: 37
Views: 7,786
Posted By user removed
Being the one who changed the OP's tires, a job I...

Being the one who changed the OP's tires, a job I think I will never do again, I refrained from posting any response.

Marks post hits the nail on the head, my 2015 Mirage is one of the best...
Forum: Aerodynamics 09-10-2015, 09:40 AM
Replies: 32
Views: 12,389
Posted By euromodder
And change the flow pattern while you're at it. ...

And change the flow pattern while you're at it.

Driving in the rain showed me that VGs actually work.


Even glider dimple tape WAS working, I'm talking about 1 tot 2 mm high (1/25 to 1/12th of...
Forum: Aerodynamics 05-02-2015, 04:40 PM
Replies: 14
Views: 4,802
Posted By aerohead
Low-drag automotive silhouettes

Here's a thread I can add to over time which shows a historical development of low-drag automobile test models or actual 'running' vehicles.
I'll try and keep them in chronological order.
NOTE:...
Forum: Aerodynamics 10-06-2013, 09:37 PM
Replies: 39
Views: 22,484
Posted By MetroMPG
It's important to be sure all other elements of...

It's important to be sure all other elements of the sedan & hatch are identical (eg. engine size/power, tire size, ride height), since these things will affect aero/Cd.

Sedans may not get the tidy...
Forum: DIY / How-to 04-02-2012, 08:27 AM
Replies: 7
Views: 4,345
Posted By markweatherill
With MacPherson struts, doesn't the wheel camber...

With MacPherson struts, doesn't the wheel camber change dramatically on full steering lock? Does that have an effect?
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