Since I run my Cobra at a 2700 ft elevation track I've enjoyed seeing what it might run at lower elevations. I finally found the combo of websites I have been looking for getting past data for converting previous and present runs.
At http://www.wunderground.com/ you can get historical information on the weather, pressure, humid etc., for any day. Just enter in your location in the Fast Forecast and then go to the Historical drop down boxes and enter the day you’re interested in. It will display a listing for that day hour by hour.
Once that information is gleaned go to http://www.modulardepot.com/density.php and enter in the relevant information and it gives you the ET / MPH conversion.
It was interesting to see that my low 12's and high 11 second runs ended up converting to approximately the same times. The weather variations made the difference. This will be useful to know when I can go to the track and perhaps stay out of the 11's and not get hassled about my lack of a roll cage.
At http://www.wunderground.com/ you can get historical information on the weather, pressure, humid etc., for any day. Just enter in your location in the Fast Forecast and then go to the Historical drop down boxes and enter the day you’re interested in. It will display a listing for that day hour by hour.
Once that information is gleaned go to http://www.modulardepot.com/density.php and enter in the relevant information and it gives you the ET / MPH conversion.
It was interesting to see that my low 12's and high 11 second runs ended up converting to approximately the same times. The weather variations made the difference. This will be useful to know when I can go to the track and perhaps stay out of the 11's and not get hassled about my lack of a roll cage.
