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Motorsports & Track Forum
From Auto-X to Trackday to Racing and Professional Motorsports this is the place to discuss making BMWs fast

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Old 04-26-2004, 01:29 AM   #1
TeKNiC330
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So Did My CAR Really Run a 14.1 Quarter Mile?

Me and sailwind were taking out my CDV today and we were talking about my run. I ran a 14.8 @ 93.10 mph. My reaction time was .708 seconds. So did my CAR really run a 14.1 quarter mile? Or am I NOT supposed to factor our my reaction time?

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Old 04-26-2004, 01:37 AM   #2
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no i don't think you calculate RT into the total 1/4 time...correct me if im wrong but I don't think the 1/4 time starts timing till your car actually moves off the start.
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Old 04-26-2004, 01:41 AM   #3
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yeah reaction time has nothing to do with it
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Old 04-26-2004, 01:45 AM   #4
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Quote:
Originally Posted by Amil
yeah reaction time has nothing to do with it
One of the guys at the track was talking about if I were to cut my reaction time down, my overal time will be better?

I assumed he meant if I got a .2 reaction time for the same run, then my time will be 14.3 instead of 14.8 with the .7 reaction time.

Maybe I misunderstood him?
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Old 04-26-2004, 01:46 AM   #5
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you ran a 14.8.. its ok i ran that bad the first time i wnet to the track with my 330 also, it took me a while to master the launch with the non lsd and drive by wire. im a running low 14's now...
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Old 04-26-2004, 01:48 AM   #6
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Quote:
Originally Posted by GarrettF
you ran a 14.8.. its ok i ran that bad the first time i wnet to the track with my 330 also, it took me a while to master the launch with the non lsd and drive by wire. im a running low 14's now...
Ok, I guess its confirmed. RT has nothing to do with my 14.8 time. I got all excited and everything too......




BTW: What rpm did you launch at? I launch at 3000 rpms with a little bit of clutch slip.
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Old 04-26-2004, 01:53 AM   #7
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honestly i dump the clutch at around 1900-2000 rpms.. too much rpms and i lose traction on one side and the start sux
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Old 04-26-2004, 01:58 AM   #8
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honestly i dump the clutch at around 1900-2000 rpms.. too much rpms and i lose traction on one side and the start sux
Doesn't the car start to boggle down after the clutch is fully released? And do you get any wheel spin? I've never poped my clutch that low before.
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Old 04-26-2004, 02:02 AM   #9
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the car bogs a little and i usually spin both wheels a bit.. no more then a chirp really, i guess its how quickly i give it gass after i pop the clutch that lets me launch the car good.. i messed around with it for a while before i got it pretty good. id do it at stop lights and go to about 40 mph. my clutch is still holding strng even witha little bit of abuse... go out and try different stratigies.. it will come to you
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Old 04-26-2004, 02:12 AM   #10
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Originally Posted by GarrettF
the car bogs a little and i usually spin both wheels a bit.. no more then a chirp really, i guess its how quickly i give it gass after i pop the clutch that lets me launch the car good.. i messed around with it for a while before i got it pretty good. id do it at stop lights and go to about 40 mph. my clutch is still holding strng even witha little bit of abuse... go out and try different stratigies.. it will come to you
haha...I was just doing that today going home from my gf's house. I just took out my CDV today and added a homemade clutch stop . I'm able to spin my wheels and chirp alot easier now.
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Old 04-26-2004, 02:27 AM   #11
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yeah man that guy was prolly talking about your 60 ft times...if you lower your 60 ft times it will impact your 1/4 times
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Old 04-26-2004, 02:30 AM   #12
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Originally Posted by hp99hp
yeah man that guy was prolly talking about your 60 ft times...if you lower your 60 ft times it will impact your 1/4 times
Yea, kinda hard listening to people with cars do burnouts and screeching their tires behind ya. Hopefully I can go back this wedsday and run again.
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Old 04-26-2004, 02:38 AM   #13
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Quote:
Originally Posted by GarrettF
you ran a 14.8.. its ok i ran that bad the first time i wnet to the track with my 330 also, it took me a while to master the launch with the non lsd and drive by wire. im a running low 14's now...

Yep... Here is one of my bad run, poor reaction time too


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Old 04-26-2004, 02:48 AM   #14
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Quote:
Originally Posted by Jimmy540i.com
Yep... Here is one of my bad run, poor reaction time too


uh...which one of your cars were you driving?! that's a quick 1/4 time
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Old 04-26-2004, 02:51 AM   #15
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Yep... Here is one of my bad run, poor reaction time too


Bad reaction time but your 1/4 time is hella faster than mines.
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Old 04-26-2004, 02:51 AM   #16
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perfect reaction time anyway is .500, so any faster than that and it's early, right?
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Old 04-26-2004, 02:54 AM   #17
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this car!

Quote:
Originally Posted by hp99hp
no i don't think you calculate RT into the total 1/4 time...correct me if im wrong but I don't think the 1/4 time starts timing till your car actually moves off the start.

Yup, what he said
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Old 04-26-2004, 07:59 AM   #19
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Is it me, or does that timeslip says you ran a 12.723 second quarter mile @ 116.19 mph?
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Old 04-26-2004, 09:58 AM   #20
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Quote:
Originally Posted by slow323ci
Is it me, or does that timeslip says you ran a 12.723 second quarter mile @ 116.19 mph?
it does say that.. its probalyl his supercahrged 540i
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