J-Rod

Here is a post from RC45 over on z06vette that I thought some of you might be interested in...

I'll leave someone else to give you the exact formulae... instead I will show youhow I worked it out - turned out to be a lot more fun than hauling out the old slide rule..


One answer is at least 800hp and 3.73 final drive to pull 6600rpm in 6th gear (within 3 miles of your standing start launch) - which equates to a top speed of 239mph.

Here are the results of my fictional "Best of the best" shootout road test.

The Stage

What we are looking for I am sure, is a streetable car that does what the Ferrari Enzo and McLaren F1 do - go like a bat out of hell.

The scenario I simulated is a 1 mile standing start, with timed intervals at 60mph, 100mph, 1/4 mile and 1 mile.

The next measurement was how much speed is gained over a mile after you have shifted from 5th (at redline) into 6th (After all, top speed needs to be reached in a reasonable distance).

Finally the car is allowed to run flat out from mile marker 2 until the 3rd mile marker (giving you roughly a flying mile of top speed run) and that is taken as the Top Speed.

The cars are assumed to run on stock wheels and tyres, and suspension and with no aerodynamic aids.

Stock transmission ratios are used, with final drive ratios of 3.42, 3.73, 3.90 and 4.10 used for each battery of tests.

The top speed runs take place on a very large test oval with 1 mile straights and 1 mile turns, giving you runs in either direction and one bend for the total 3 mile sprint.

I feel this kind of test gives a true feel for the real world evaluation of all the power available and final drive ratios that can be used.

The Players

RWHP Numbers
350hp Stock Z06
430hp Modified Z06
550hp Modified Z06
800hp Modified Z06


The Results

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1. Stock 350hp
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3.42 Final drive
Top Speed (at the 3 mile marker) - 172mph @ 6600rpm (5th gear)
Acceleration 5th to 6th (over 1 mile) - 171mph to 166mph <-- went down!
0 - 60mph - 4.0s
0 - 100mph - 10.3s
1/4 mile - 12.4 @ 107mph
1 mile - 33s @ 159mph

3.73 Final drive
Top Speed (at the 3 mile marker) - 167mph @ 4600rpm (6th)
Acceleration 5th to 6th (over 1 mile) - 157mph to 167mph
0 - 60mph - 3.9s
0 - 100mph - 10.7s
1/4 mile - 12.5 @ 108mph
1 mile - 33s @ 158mph

3.90 Final drive
Top Speed (at the 3 mile marker) - 173mph @ 5000rpm (6th)
Acceleration 5th to 6th (over 1 mile) - 150mph to 167mph
0 - 60mph - 4.2s
0 - 100mph - 10.9s
1/4 mile - 12.6 @ 108mph
1 mile - 33s @ 154mph

4.10 Final drive
Top Speed (at the 3 mile marker) - 177mph @ 5500rpm (6th)
Acceleration 5th to 6th (over 1 mile) - 143mph to 168mph
0 - 60mph - 4.2s
0 - 100mph - 10.9s
1/4 mile - 12.6 @ 108mph
1 mile - 33s @ 153mph

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2. Modified 430hp
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3.42 Final drive
Top Speed (at the 3 mile marker) - 179mph @ 4500rpm (6th)
Acceleration 5th to 6th (over 1 mile) - 171mph to 179mph
0 - 60mph - 3.5s
0 - 100mph - 8.0s
1/4 mile - 11.6 @ 120mph
1 mile - 30s @ 171mph

3.73 Final drive
Top Speed (at the 3 mile marker) - 189mph @ 5200rpm (6th)
Acceleration 5th to 6th (over 1 mile) - 157mph to 180mph
0 - 60mph - 3.5s
0 - 100mph - 8.1s
1/4 mile - 11.5s @ 121mph
1 mile - 30s @ 168mph

3.90 Final drive
Top Speed (at the 3 mile marker) - 192mph @ 5600rpm (6th)
Acceleration 5th to 6th (over 1 mile) - 150mph to 182mph
0 - 60mph - 3.5s
0 - 100mph - 8.2s
1/4 mile - 11.6s @ 121mph
1 mile - 30s @ 168mph

4.10 Final drive
Top Speed (at the 3 mile marker) - 196mph @ 6000rpm (6th)
Acceleration 5th to 6th (over 1 mile) - 143mph to 184mph
0 - 60mph - 3.6s
0 - 100mph - 8.2s
1/4 mile - 11.5s @ 121mph
1 mile - 30s @ 169mph

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3. Modified 550hp
======================================== =[/b]
3.42 Final drive
Top Speed (at the 3 mile marker) - 200mph @ 5100rpm (6th)
Acceleration 5th to 6th (over 1 mile) - 171mph to 193mph
0 - 60mph - 3.3s
0 - 100mph - 7.1s
1/4 mile - 11.1 @ 129mph
1 mile - 28s @ 181mph

3.73 Final drive
Top Speed (at the 3 mile marker) - 210mph @ 5800rpm (6th)
Acceleration 5th to 6th (over 1 mile) - 157mph to 199mphmph
0 - 60mph - 3.4s
0 - 100mph - 7.2s
1/4 mile - 11.1s @ 130mph
1 mile - 28s @ 181mph

3.90 Final drive
Top Speed (at the 3 mile marker) - 212mph @ 6100rpm (6th)
Acceleration 5th to 6th (over 1 mile) - 150mph - 199mph
0 - 60mph - 3.4s
0 - 100mph - 7.3s
1/4 mile - 11.1s 130mph
1 mile - 28s 182mph

4.10 Final drive
Top Speed (at the 3 mile marker) - 212mph @ 6500
Acceleration 5th to 6th (over 1 mile) - 143mph to 199mph
0 - 60mph - 3.4s
0 - 100mph - 7.3s
1/4 mile - 11.1s @ 130mph
1 mile - 28s @ 184mph

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4. Modified 800hp
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3.42 Final drive
Top Speed (at the 3 mile marker) - 235mph @ 6000rpm (6th)
Acceleration 5th to 6th (over 1 mile) - 171mph to 215mph
0 - 60mph - 3.2s
0 - 100mph - 6.6s
1/4 mile - 10.7 @ 141mph
1 mile - 26s @ 197mph

3.73 Final drive
Top Speed (at the 3 mile marker) - 239mph 6600rpm (6th)
Acceleration 5th to 6th (over 1 mile) - 157mph to 220mph
0 - 60mph - 3.4s
0 - 100mph - 6.7s
1/4 mile - 10.7 @ 142mph
1 mile - 26s @ 203mph

3.90 Final drive
Top Speed (at the 3 mile marker) - 232mph @ 6600rpm (6th)
Acceleration 5th to 6th (over 1 mile) - 150mph to 225mph
0 - 60mph - 3.4s
0 - 100mph - 6.5s
1/4 mile - 10.7 @ 143mph
1 mile - 26s @ 206mph

4.10 Final drive
Top Speed (at the 3 mile marker) - 222mph @ 6600rpm (6th)
Acceleration 5th to 6th (over 1 mile) - 143mph to 220mph
0 - 60mph - 3.4s
0 - 100mph - 6.5s
1/4 mile - 10.7 @ 141mph
1 mile - 26s @ 208mph


Before anyone thinks I am the engineer extraodinaire that was able to grab a slide rule and calculate all the above - I simply grabbed Gran Turismo3 for PlayStation2 and hit the test track

-Paul

Bink

Somebody has way too much time on their hands! :D :cheers:

elric

GT3 :lol: