What is the optimal weather conditions for the track?

[kendo347]

Just curious how much temps, humidity, etc can affect your time at the drag strip.

[pit-man]

Originally Posted by kendo347

Just curious how much temps, humidity, etc can affect your time at the drag strip.

All varies with track conditions. I have seen 5 tenths from 3000 DA to -700 DA

[phils C5 vette]

its a great day for racing in tampa today.

must be 65*

[JDaniel]

Optimal weather is low temps, very little to no humidity and good BP. Just do the math.

DA = 144745,11628 [1 - ( po/psl )
_____

( t/tsl )


where

DA = density altitude in feet
P0 = atmospheric (static) pressure
PSL = standard sea level atmospheric pressure (101.325 kPa)
T = true (static) air temperature in kelvins (K) [add 273.15 to the Celsius (°C)] figure
TSL = standard sea level air temperature (288.15 K)
b = 0.235


Or... just go here:

http://www.dragtimes.com/da-density-...e=Calculate+DA

[kendo347]

^Great link. Thanks

[LS1LT1]

Originally Posted by kendo347

What is the optimal weather conditions for the track?

That's kind of a tough question to answer as a lot depends on the vehicle, it's level of modification and what tires it's using.
A stock/near stock car might run it's best in 45-50 degree temps but yet a 800+rwhp forced induction car might go quicker in 60-65 degree air, traction becoming more key there then the power gains attained from a lower DA etc.