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Forum: Aerodynamics

06-12-2012, 04:52 PM

Replies: 35

Terminal velocity (THIS IS A TROLL THREAD)

Views: 5,904

Posted By tortoise

Before we work on the meaning of life, we need to...

Before we work on the meaning of life, we need to address the meaning of "meaning". Just sayin'.

Forum: Aerodynamics

05-26-2012, 01:58 PM

Replies: 47

Boeing 787 Aerodynamic Report

Views: 13,359

Posted By tortoise

I believe the intent of the OP was to celebrate...

I believe the intent of the OP was to celebrate the advanced engineering of the 787, to inspire us to make comparable improvements in our cars, not to persuade us to fly.

Forum: Fossil Fuel Free

05-23-2012, 07:57 PM

Replies: 18

A little about my project

Views: 4,130

Posted By tortoise

W. Virginia safety inspection requires AS1 or...

W. Virginia safety inspection requires AS1 or AS10 safety glass for windshield.

Forum: General Efficiency Discussion

05-21-2012, 11:04 PM

Replies: 63

10 to 12 mpg improvement is the same as 30 to 60 mpg

Views: 12,283

Posted By tortoise

Turn it upside down. Gallons per mile. Make it...

Turn it upside down. Gallons per mile. Make it gallons per 100 miles so you get a more useful number. That's the way (metrically, of course), the Europeans do it. Of course, if Americans did anything...

Forum: General Efficiency Discussion

05-21-2012, 06:41 PM

Replies: 63

10 to 12 mpg improvement is the same as 30 to 60 mpg

Views: 12,283

Posted By tortoise

At this level, it's a competitive sport, done for...

At this level, it's a competitive sport, done for fun. Nothing wrong with a little fun.

Forum: General Efficiency Discussion

05-10-2012, 05:03 PM

Replies: 33

blueprinting v8 engine (for Porsche 944 - goal: 400 rwhp but still maintain 35mpg)

Views: 8,239

Posted By tortoise

4.8 For a given displacement, a longer bore...

4.8

For a given displacement, a longer bore gives a more compact cumbustion chamber, which you want for thermal efficiency.

If you can make it work, GM Active Fuel Management (google it), aka...

Forum: Aerodynamics

05-02-2012, 09:33 PM

Replies: 9

Can-Am Spyder Sponsored Trans. Design Project

Views: 4,528

Posted By tortoise

You need to close the hole in the air behind the...

You need to close the hole in the air behind the rider. Below is the world's fastest sit-on-top motorcycle.
...

Forum: EcoModding Central

01-29-2012, 10:23 PM

Replies: 94

Poll: Diesel Swaps into 50s/60s Classics

Views: 41,564

Posted By tortoise

Huh? Do you mean maybe a Chevelle, or a Corvette?...

Huh? Do you mean maybe a Chevelle, or a Corvette? Corvairs had rear mounted air-cooled flat sixes, ya know? On the other hand, Chevelles started in '63.

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