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Discussion Starter #1
OK, I've got to do a statistics project for class comparing two predictor variables and a response variable. I've got to find out which predictor variable is better for estimating the response. I've decided to use trap speed and 60' times to estimate 1/4 times, and my guess is that the 60' time is going to be a better predictor than the trap.

So could you guys post these three things for me? I know some have it in sigs, but it'll save me a lot of time if I don't have to read through volumes of threads looking for timeslips.

Thanks a bunch!
 

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If you compare our 60' times compared to something like an LS1 though...It can't figure out 1/4 mile times worth anything. But for this you are only using AWD 3si's right?
 

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Discussion Starter #4 (Edited)
I'm only gathering data on AWD 3s's
:)

Thanks for the help!

BTW, don't include any times you have posted on the Minnesota "Fastest 3S" list, I have that.... I just want more data!

BTW again..... initial results say I'm an idiot. Trap is a WAY better predictor.
 

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If you can wait a day or 2, Joe G. will probably post the results of the MI3S gathering at Lapeer Dragway last weekend. He will have the timeslips for at least 5 of the 3S cars that raced. Two 1st gen TT's, two 2nd gen TT's, and a 1st gen VR4.
 

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Ahhh, I thought it was only AWD 3si's :D Or else as you can see from those other cars 60ft's your experiment would be pointless! Because as well all remember from HS Science...There is only one constant control :p
 

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Discussion Starter #7
Actually, I could use multiple cars in stats.... but I would have to compare whether predictor variable a is better than predictor variable b for various types of cars. Stats has slightly different rules than other sciences. That would be a royal PITA experiment though, and I think this simple experiment is more interesting
 

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Yah..This will be cool to see...All we will have to do in 3si's is launch the first 60' and get 1/4 times from it, heheh
 

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here is my best run:

60' = 1.79
1/4 = 13.44
mph = 102.8

Here is one from a long time ago when I was less modded:

60' = 1.98
1/4 = 13.91
mph = 100.77
 

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You can't predict ET from 60ft times or trap speeds. I know of cars with higher trap speed, but slower times, and I know of cars with faster times, but worse 60ft times, as well as slower cars with better 60ft times.
 

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here are some more timeslips of mine:

60'
1/4
mph

2.99
15.13
100.35

2.26
14.15
101.45

2.25
14.44
102.44

1.87
13.63
101.89

2.07
13.92
101.55

2.00
13.81
101.62

1.91
13.72
101.29

1.90
13.61
101.62

2.29
14.42
100.75

1.97
13.67
101.89

those were all really old (before I learned how to launch) but I figured it will help you determine how important the 60' is!
 

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Here are a few of mine from last weekend:

60 FT 2.048 2.141 1.969 1.873 1.955
1/4 ET 12.665 12.843 12.78 12.618 12.787
1/4 MPH 119.4 120.4 116.53 116.54 113.02


Here are others from another track last month:

60 FT 2.180 1.934 1.863
1/4 ET 13.370 12.784 12.458
1/4 MPH 99.35 108.42 113.01
 

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jeff, great 1/4 times! what mods do you have? get those 60's down and you will be around a 12.1 :eek:
 

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I had a horrible time launching last weekend. I had trouble finding the happy medium between brutal tire spin, or dumping and bogging the motor.

Mods are:
GT357 turbos, 550 injectors, ARC-2 fuel controller, HKS EVC-IV boost controller, ATR downpipe, gutted pre-cats, no main cat, Borla Exhaust, Alamo Y-pipe, HKS SBOV, Magnecore wires, RPS3 clutch, Fidanza flywheel, Denso Stage 1 fuel pump, fuel pump hotwire kit.

Now I'm out of money:(
 
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Jeff,
you got 120'ish MPH trap speed???Oh my,I'm jealous.....:D
That's about 3 mph faster than the new Viper,and sure enough your car would kill Z06 from a roll easily...:eek:
 

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the scary(cool) part about jeff's 120 trap is:
a) That run had a 2+ sec 60ft had he gotten a decent launch how fast could he have been going at the end ?

b) He was not maxing his boost out. Based on his mods and the 100 oct gas he had, the 17-18 psi he was running was very conservitave.

imagine a 1.7-8 60ft and 20+ psi :eek:
 

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Discussion Starter #17 (Edited)
WICKEDDREW said:
You can't predict ET from 60ft times or trap speeds. I know of cars with higher trap speed, but slower times, and I know of cars with faster times, but worse 60ft times, as well as slower cars with better 60ft times.
So far, my stat analysis shows that 60' is not such a great predictor, but trap actually seems to be very good. Based on my data so far, I can confidently guess a 1/4 based on trap within about .3 seconds.

And that estimate would be even more confident if Matt92VR4 hadn't run that 15.xxx (outlier that's screwing up my data) ;)

Thanks for the slips! Please keep 'em coming!
 
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Alan92RTTT said:
imagine a 1.7-8 60ft and 20+ psi :eek:

Can I say...125mph traps?That's hella sweet!!
VR4/TT are touring cars with all the goodies, that can hang with many sport cars.Comfortable and stable.

Imagine if Mitsu build VR4/TT based on pure breed sport car base.
:cool:
 

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Discussion Starter #20
TTT

Any more time slips guys? Please :D
 
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