13 second N/A runs

[FloydSummerOf68]

Re: 13 second N/A runs

what is very high DA. i know we got a high humidity and the track is like 10ft(est) above sea level.

Denisty altitude factors in the humidity, temp, elevation, and pressure...higher DA results in poor air and slower ET and MPH.

my 60 foots are just like the op, not great just average. my reaction times are pretty good .2-.5. i know i need a tune, badly.

A tune is crucial for getting good times.

[David8399]

Re: 13 second N/A runs

well like i said humity is always at like 90-100% track is roughly one mile from the beach and generaly it is right arround 90 degrees. eventually i gonna go visit with turbov6 and shodown in florida and learn some tuning and nitrous stuff before i expect ot get anything spectacular.

[FloydSummerOf68]

Re: 13 second N/A runs

Ouch...yeah those are terrible features for racing.

Wait for the winter air and you'll get MUCH better times.

[LETZRIDE]

Re: 13 second N/A runs

so I hit the track again last night and ran my worst times ever, 15.8's almost all night

I FINALLY got info about elevation and crap though, so maybe someone can help me out with that stuff...

elevation is 205 meters above sea-level
temp 25C
humidex 29C
barrometric pressure 100.65k/a
humidity 54%

anything else that must be known?

[Smoke Panther]

Re: 13 second N/A runs

anything else that must be known?

the rest of the timeslip....

[LETZRIDE]

Re: 13 second N/A runs

yea sorry didnt have em with me when I posted this just picked the car up and here they are...

top 3

R/T.......... .252
60'......... 2.287
330.......... 6.519
1/8............ 10.011
MPH....... 70.03
1000........ 13.046
1/4....... 15.595
MPH......... 88.75

R/T.......... .245
60'......... 2.322
330.......... 6.598
1/8............ 10.105
MPH....... 69.95
1000........ 13.152
1/4....... 15.707
MPH......... 88.50

R/T.......... .071
60'.........2.342
330..........6.597
1/8............10.107
MPH.......69.67
1000........13.160
1/4.......15.724
MPH.........88.24

These are like the slowest times I have ever run...this was with a full interior, 3/4 of a tank of gas (filled up the day before) and a new cutout put in and opened....These times are frustrating for a full bolt on car....gotta be something wrong.

On a side note there was an Lt1 running 15.0 last night, and an 98+SS running mid 14's so....

[FloydSummerOf68]

Re: 13 second N/A runs

Here is the DA calculator...you can figure it out using these fields

http://wahiduddin.net/calc/calc_da_em.htm

[LETZRIDE]

Re: 13 second N/A runs

Thanks...now given the info I have supplied what goes where? lol

elevation is obviously 205.5
Air tempurature is 25 right (not the humidex)?
altimeter setting is what?
dew point is the humidex? 29C?

thanks...

[FloydSummerOf68]

Re: 13 second N/A runs

Go to wunderground.com and you can find the altimeter # http://www.wunderground.com/

Scroll to where it says "History and Almanac" and then select the date that you raced...it will show detailed readings for the various hours of the day. You can see the "sea level pressure" (ex: 29.85 in), dew point, temp, etc... there which is what you want

[LETZRIDE]

Re: 13 second N/A runs

Beauty....Now what do I do with this information lol, I have found out that...
D/A 2320
Absolute pressure 29.032
relative density 93.39

what does this all mean, and how would this affect my runs?

[FloydSummerOf68]

Re: 13 second N/A runs

It means that if you raced at a track near sea-level on a cool day (near 0 DA) that you'd be a few tenths faster. The lower the DA the quicker your car will be.

DA is just a way to relate your times to others times.

You couldn't compare to someone racing at a track with great DA, so you use it as a standard to compare against.

[LETZRIDE]

Re: 13 second N/A runs

I see...is there something that will calculate a correction time....like you input the DA and your 1/4 mile time, and some calculation gives you a correction number of what you would run at 0 DA (estimate wise)

[FloydSummerOf68]

Re: 13 second N/A runs

http://www.modulardepot.com/density.php

You have a PM too.

[Pewter2K1]

Re: 13 second N/A runs

i have been 14.0@97... only weight redux is removal of the back seat and spare tire...
but i am cammed. stock heads, 4.10s and a 3500 stall... i weighed my car and without me in it its right at 3300, so 3475 with me in it..