effects of 90* weather and high humidity
08-09-2005, 12:17 AM
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effects of 90* weather and high humidity i ran my car this past sunday- got 3 12.5's at 108.XXmph-
best run of a 12.50, best mph of 108.8- but all 3 12.5X @ 108.X so im consistent.
it was around 85-90* out, really humid (i did one run and it was spritzing a tiny bit of rain on my windshield, but somehow the track was still hooking).
this track is also 500ft asl. the track i like to go to is really close to 0ft asl (atco).
im also not dyno tuned yet- i have no idea where my a/f is but i think im close, probably still a bit rich. havn't got time or $ for dyno time right now.
now i KNOW the car has some more left in it, but i don't really know how much. i HOPE i can get .3-.4 out of it and 110-112mph, but not sure if that is realistic. im thinking with a good flat 12.8:1 a/f, maybe add a little timing in, nice 60* weather, at atco it is possible to get my goal.
thoughts? believe me, i cannot wait till it gets a tad cooler out to see just what the weather will do for my times/mph.
best run of a 12.50, best mph of 108.8- but all 3 12.5X @ 108.X so im consistent.
it was around 85-90* out, really humid (i did one run and it was spritzing a tiny bit of rain on my windshield, but somehow the track was still hooking).
this track is also 500ft asl. the track i like to go to is really close to 0ft asl (atco).
im also not dyno tuned yet- i have no idea where my a/f is but i think im close, probably still a bit rich. havn't got time or $ for dyno time right now.
now i KNOW the car has some more left in it, but i don't really know how much. i HOPE i can get .3-.4 out of it and 110-112mph, but not sure if that is realistic. im thinking with a good flat 12.8:1 a/f, maybe add a little timing in, nice 60* weather, at atco it is possible to get my goal.
thoughts? believe me, i cannot wait till it gets a tad cooler out to see just what the weather will do for my times/mph.
08-20-2005, 12:03 PM
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thanks for the replies 
after testing in ~75* weather (still pretty high humidity) i got .05 off of my time with the same 60ft. that i pulled in the warmer weather. it gained about 1mph in 80* weather vs. the 90* weather- it went 109mph all night, and solid 12.5's. i cracked off the 12.45 in my sig with my only 1.7X 60ft.
after testing in ~75* weather (still pretty high humidity) i got .05 off of my time with the same 60ft. that i pulled in the warmer weather. it gained about 1mph in 80* weather vs. the 90* weather- it went 109mph all night, and solid 12.5's. i cracked off the 12.45 in my sig with my only 1.7X 60ft.
08-20-2005, 05:20 PM
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well my rear wing had a good layer of "dew" on it on my last run, hence it was highly humid still just not sure how humid.
so with lower humidity and a tad lower temperature i theoretically could run a tad better, if i can hook/launch into the 1.7's (which isn't likely in temperatures below 70*).
so with lower humidity and a tad lower temperature i theoretically could run a tad better, if i can hook/launch into the 1.7's (which isn't likely in temperatures below 70*).
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08-20-2005, 07:14 PM
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wow- i got .05 and you got .5-
i cannot see my car getting out of the 12.40's with my setup, the colder/better it gets out the less i'll hook so it'll even out and run the same (more power but worse 60ft.).
i cannot see my car getting out of the 12.40's with my setup, the colder/better it gets out the less i'll hook so it'll even out and run the same (more power but worse 60ft.).