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Density Altitude(DA)?

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Old Apr 17, 2004 | 03:33 PM
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Question Density Altitude(DA)?

How do you calculate for DA?

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Ever
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Old Apr 17, 2004 | 03:40 PM
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The link below will do it for you.
http://wahiduddin.net/calc/calc_da.htm

This link will provide you with the weather conditions by zip code. Just input your zip.
http://www.weatherunderground.com/cg...st?query=36117

You will also need to get the elevation of the track you run at.

John
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Old Apr 17, 2004 | 03:50 PM
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I just found out that the DA for the day I ran was 6500ft. I ran a 13.4@107mph before the H/C. Do I use the altitude correction factors for DA or actual elevation? Which is 4500ft.

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Ever
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Old Apr 17, 2004 | 07:03 PM
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you would use your DA to figure the correction if you are trying to see what your car runs at sea level. This page will save a couple steps if you know the weather/track elevation:

http://www.modulardepot.com/density.php
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Old Apr 17, 2004 | 08:10 PM
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So my 13.4@107mph run corrected is a 12.2@116mph. Nice!

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Ever
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