Density altitudes; Eunice vs Hallsville -- Racepics.net's Heads Up Racing Association

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Date Posted: 23:00:35 07/14/03 Mon
Author: Frenchman
Subject: Density altitudes; Eunice vs Hallsville
In reply to: ALAN 's message, "SLOWER TIMES" on 08:55:58 07/14/03 Mon

Alan, your summation in general is correct but in this case not accurate.
The elevation of the Eunice track is 42 ft above sea level. The elevation of the Hallsville track is between 300-500 ft above sea level. This difference in performances of the cars will not deviate but .03 seconds in the quarter mile based on this elevation differential. That is 3/100th's of a second.
Out of curiosity to your post, I pulled out my FAA sectional navigation charts and found that the elevation of the tallest point in the Hallsville area would be 500 ft; the peak of a hill that a communications tower is located on. The low point in this area is 300 ft msl and the heighest being 500 ft msl, so the Hallsville track is probably around 400 ft msl. The correction factor of the Hallsville track, if the track elevation is say 400 ft msl, would be approximately .9978. This in laymen terms would be to multiply your Hallsville ET by .9978 and you would then have a "corrected" ET.
The correction factor of the Eunice track is so miniscule that it won't even show up on paper. What you run is just about all she's gonna do.
This post's intent is not to be antagonistic, only for information purposes. Thanks. I save the antagonistic ones for my hillbilly friend, Jen.

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