Da ?
Race Director
Joined: Oct 1999
Posts: 13,298
Likes: 14
From: Somers NY
Yes but you have to know what your car will run in good air (or bad air)..
Example if my car runs 12.30 in good air (corrected alt. 100') then I run in "Bad Air" (corrected Alt. 3000') it will slow to 12.60 thats a guess..
But you have to log your ET and the corrected Alt. the lower the better..
Thats why the cars in NJ will run quicker than cars in Fla its better air in March or November ...45-50 deg with a Barometer of .30.10 is great as opposed to 90 deg with Barometer of 29.20....
They make Weather stations (TAG) is one that you enter your ET and it records the weather, and will predict your ET.. Mine is usually accurate to within .020 + or - a little
Example if my car runs 12.30 in good air (corrected alt. 100') then I run in "Bad Air" (corrected Alt. 3000') it will slow to 12.60 thats a guess..
But you have to log your ET and the corrected Alt. the lower the better..
Thats why the cars in NJ will run quicker than cars in Fla its better air in March or November ...45-50 deg with a Barometer of .30.10 is great as opposed to 90 deg with Barometer of 29.20....
They make Weather stations (TAG) is one that you enter your ET and it records the weather, and will predict your ET.. Mine is usually accurate to within .020 + or - a little
Last edited by jpee; Mar 31, 2010 at 01:05 PM.
Le Mans Master
Joined: Feb 1999
Posts: 6,172
Likes: 11
From: somers, ny
I'm gonna guess that March 28th was a good air day in Delmar. Delmar, like Etown, is almost at Sea level and we had DAs of about -500 ft at Etown on Sat. Rule of thumb is that each 100 ft of DA will affect your ET by about .01 (assuming 1/4 mile & gas).
....your results may vary.
....your results may vary.
