I've been reading a lot of post about 1/4 mile times and I see a lot of you guys talking about the "DA"... What exactly is it? How does it affect my ETs? And how do I calculate it?
DA = Density Air.I've been reading a lot of post about 1/4 mile times and I see a lot of you guys talking about the "DA"... What exactly is it? How does it affect my ETs? And how do I calculate it?
Went to the track yesterday, ran 4 times getting in 3 of them ETs of 13.60 the DA of 4046... The car temerature and the tire pressurewas were the same. This week I ran .09 seconds slower than last week, also the DA went up 195 points... Could this be the reason why I got .09 seconds slower? What other factor should I look in to?Thanks for the info... I live in Monterrey, Mexico. Monterrey is about 150 miles from Laredo or Mcallen, Texas. The altitude in Monterrey is of 1765'.
Yesterday at the track my best ET was 13.51 @ 107.7 mph., with a RT ok .675 and a DA of 3851 (according to the calculator), is that any good?
Thanks... this DA thing is very useful... tomorrow is track night and se are supposed to have a cool dry night (DA of 3650) hopefully I will be able to break my 13.51 ET record...Weight?
There is a better DA calc floating around....I will see if I can dig up the link.