MY06 vs 06 Mustang GT
07-22-2006, 12:03 PM
#22
Registered User
Originally Posted by 8kGoodENuff,Jul 20 2006, 10:19 AM
.... that was my first time ever at the track with any car.
i wondered why your times improved every run.
07-23-2006, 10:59 AM
#23
I don't understand these track times at all -- maybe someone wants to fill me in?
When I went to english town I ran a 14.540 @ 84mph (missed 4th gear duh) with a 60' of 2.334
How can I run a faster time then 8kGoodENuff if he has pretty much the same 60' time but yet a higher final mph (in the mustang GT race)?
I can't comprehend how that works.
When I went to english town I ran a 14.540 @ 84mph (missed 4th gear duh) with a 60' of 2.334
How can I run a faster time then 8kGoodENuff if he has pretty much the same 60' time but yet a higher final mph (in the mustang GT race)?
I can't comprehend how that works.
07-23-2006, 03:14 PM
#24
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Originally Posted by Spec_Ops2087,Jul 23 2006, 12:59 PM
I don't understand these track times at all -- maybe someone wants to fill me in?
When I went to english town I ran a 14.540 @ 84mph (missed 4th gear duh) with a 60' of 2.334
How can I run a faster time then 8kGoodENuff if he has pretty much the same 60' time but yet a higher final mph (in the mustang GT race)?
I can't comprehend how that works.
When I went to english town I ran a 14.540 @ 84mph (missed 4th gear duh) with a 60' of 2.334
How can I run a faster time then 8kGoodENuff if he has pretty much the same 60' time but yet a higher final mph (in the mustang GT race)?
I can't comprehend how that works.
In other words, a car with slicks, for example, can run a lower ET with less mph by getting going faster at the start, while a more powerful car that has too much wheelspin off the line can run a higher trap speed, but the poor 60' costs too much time, resulting in a slower ET.
You make up most of your time on the start, because any car will accelerate harder in the lower gears than the higher gears. So you don't actually lose much time if you miss the 3-4 shift, but if you miss the 1-2 shift or f up your start, your ET is gong to blow.
Does that make sense to you?
07-23-2006, 06:05 PM
#25
Originally Posted by no_really,Jul 23 2006, 06:14 PM
you were probably on a pace to run faster than him by maybe half a second if you hadn't missed a shift, but with a similar trap speed. Trap speed usually is a pretty decent indicator of horsepower, while ET is a good indicator of traction/driver skill.
In other words, a car with slicks, for example, can run a lower ET with less mph by getting going faster at the start, while a more powerful car that has too much wheelspin off the line can run a higher trap speed, but the poor 60' costs too much time, resulting in a slower ET.
You make up most of your time on the start, because any car will accelerate harder in the lower gears than the higher gears. So you don't actually lose much time if you miss the 3-4 shift, but if you miss the 1-2 shift or f up your start, your ET is gong to blow.
Does that make sense to you?
In other words, a car with slicks, for example, can run a lower ET with less mph by getting going faster at the start, while a more powerful car that has too much wheelspin off the line can run a higher trap speed, but the poor 60' costs too much time, resulting in a slower ET.
You make up most of your time on the start, because any car will accelerate harder in the lower gears than the higher gears. So you don't actually lose much time if you miss the 3-4 shift, but if you miss the 1-2 shift or f up your start, your ET is gong to blow.
Does that make sense to you?
07-24-2006, 05:45 AM
#26
Thread Starter
Originally Posted by no_really,Jul 23 2006, 03:14 PM
you were probably on a pace to run faster than him by maybe half a second if you hadn't missed a shift, but with a similar trap speed. Trap speed usually is a pretty decent indicator of horsepower, while ET is a good indicator of traction/driver skill.
In other words, a car with slicks, for example, can run a lower ET with less mph by getting going faster at the start, while a more powerful car that has too much wheelspin off the line can run a higher trap speed, but the poor 60' costs too much time, resulting in a slower ET.
You make up most of your time on the start, because any car will accelerate harder in the lower gears than the higher gears. So you don't actually lose much time if you miss the 3-4 shift, but if you miss the 1-2 shift or f up your start, your ET is gong to blow.
Does that make sense to you?
In other words, a car with slicks, for example, can run a lower ET with less mph by getting going faster at the start, while a more powerful car that has too much wheelspin off the line can run a higher trap speed, but the poor 60' costs too much time, resulting in a slower ET.
You make up most of your time on the start, because any car will accelerate harder in the lower gears than the higher gears. So you don't actually lose much time if you miss the 3-4 shift, but if you miss the 1-2 shift or f up your start, your ET is gong to blow.
Does that make sense to you?
Andre
07-24-2006, 07:06 AM
#27
Registered User
Originally Posted by 8kGoodENuff,Jul 20 2006, 12:51 PM
You think launching from 6000 RPM is a good idea or is 5500 RPM good enough? Maybe next time I'll try not to slip the clutch as much.
Andre
Andre
Launch will vary every single time. It's completely dependent upon track conditions, tires, tire pressure, humidity, heat, etc, etc, etc.
07-24-2006, 07:11 AM
#28
Registered User
Originally Posted by 8kGoodENuff,Jul 21 2006, 06:40 AM
I see what you're saying... but I like my transmission and I really don't need it blowing up... lol. Dropping the clutch puts a lot of stresses on the drivetrain, not sure if I want to deal with that just yet, considering I got the car in April.
Andre
Andre
If you drop the clutch at too low an rpm like 3-4k you'll bog, and that puts incredible stress on your diff. so, if you want to spend a few grand to replace your diff, then sure keep bogging your launch.
do it right, and save your diff.
07-24-2006, 07:11 AM
#29
Registered User
Originally Posted by stitos2k,Jul 21 2006, 07:53 AM
The theory beind 7k rpm drops is that it is actually less stressful than a 3-4k drop.
When you drop a 3-4k, or 5k in your case, you don't have enough power going to ground to properly break the tires loose. This actually puts much more strain on the drive train than droping at 7k rpms and spinning the tires because the shock load is much higher. Its less strain to spin the tires than to move a 2800 pound car from a dead stop.
I THINK I explained that correctly. More people have broken a diff or burned out a clutch dropping from 4k rpms than 7k.
When you drop a 3-4k, or 5k in your case, you don't have enough power going to ground to properly break the tires loose. This actually puts much more strain on the drive train than droping at 7k rpms and spinning the tires because the shock load is much higher. Its less strain to spin the tires than to move a 2800 pound car from a dead stop.
I THINK I explained that correctly. More people have broken a diff or burned out a clutch dropping from 4k rpms than 7k.
07-24-2006, 07:13 AM
#30
Registered User
Originally Posted by 8kGoodENuff,Jul 24 2006, 07:45 AM
Wait... so does that mean that my car is lacking some power? Cause I've seen people in here trap at 99 mph or 100 mph with a stock S2K.
Andre
Andre
Generally, if you have a bad launch, you'll still run a very similar trap to what your highest trap would be.
If you're trapping less than 98/99 mph, then you're shifting too slow.