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One tenth reduction in 60ft equals.....?

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Old Feb 29, 2008 | 04:01 PM
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Default One tenth reduction in 60ft equals.....?

On average, what does:
one tenth
two tenths
three tenths
reduction in 60ft times equate to in et reduction. I know it's more than a 1:1 ratio, but does anyone know what it'd be ?
Say you ran a 1.86 60ft en route to a 11.37 ET, what whould a 1.76 60ft get you? A 1.66 60ft? A 1.56 60ft....you get the picture.
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Old Feb 29, 2008 | 04:04 PM
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usually right at two tenths for every tenth reduction
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Old Feb 29, 2008 | 04:07 PM
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^^^^^ Like posted above
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Old Feb 29, 2008 | 04:25 PM
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.1 off your 60ft = .15 off the top.
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Old Feb 29, 2008 | 04:35 PM
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I've heard .15-0.2.

Last edited by 02 Camaro SS; Feb 29, 2008 at 04:45 PM.
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Old Feb 29, 2008 | 04:41 PM
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one off the 60 is 2 at the top end..
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Old Feb 29, 2008 | 07:10 PM
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So , does that make it .1=.2, and .2=.4, right....so , where is the point of diminished returns? Is there a point where no matter how low you get your 60ft, you won't get a lower ET? I guess thats a hp/aerodynamic question,there.
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Old Feb 29, 2008 | 08:32 PM
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Originally Posted by Evilways
On average, what does:
one tenth
two tenths
three tenths
reduction in 60ft times equate to in et reduction. I know it's more than a 1:1 ratio, but does anyone know what it'd be ?
Say you ran a 1.86 60ft en route to a 11.37 ET, what whould a 1.76 60ft get you? A 1.66 60ft? A 1.56 60ft....you get the picture.
an 11.17, 10.97, 10.77, but keep in mind with a 60ft that slow you'd have to run a lot of mph to run that et.

1.86 with an 11.37 would be a super bad 60ft, 11.37 should be about a 1.5 50ft. around 117 mph. If you ran a 1.86 with 11.37 et you'd be running like 130 mph
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Old Feb 29, 2008 | 09:14 PM
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.

1 1/2 or 2. No exact rule, depends on HP & combination.

.
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Old Feb 29, 2008 | 09:34 PM
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Originally Posted by RAGENZ28
an 11.17, 10.97, 10.77, but keep in mind with a 60ft that slow you'd have to run a lot of mph to run that et.

1.86 with an 11.37 would be a super bad 60ft, 11.37 should be about a 1.5 50ft. around 117 mph. If you ran a 1.86 with 11.37 et you'd be running like 130 mph
I ran a bit over 124mph for the 11.37 and the 1.86 60ft.
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Old Feb 29, 2008 | 11:08 PM
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lol lol lol i know how you feel.. 1.699 at 11.30 and 125.7 i need for 60 in my dies and 10s NA here we come
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Old Mar 1, 2008 | 12:21 AM
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Suppose a stock F-body has a 2-second sixty and a 13-second ET. A Pro Stock car has a sixty time near one second and a 6.8 second ET. Can you therefore conclude that one second off your sixty is more than 6 seconds off your ET?
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Old Mar 1, 2008 | 08:23 AM
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Originally Posted by Gary Z
Suppose a stock F-body has a 2-second sixty and a 13-second ET. A Pro Stock car has a sixty time near one second and a 6.8 second ET. Can you therefore conclude that one second off your sixty is more than 6 seconds off your ET?
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Old Mar 1, 2008 | 09:14 AM
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The .1 = .2 or .1 = .15 theories have never worked for me. When the 60 ft was .05 better the ET was .05 better also. When it was .1 better the ET was .1 better too. My car is super consistant and I have watched this happen many times.
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Old Mar 1, 2008 | 09:21 AM
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So from what everyone is saying if i ran a 12.3 with 1.99 60 foot if i can get it to 1.8 i should be in the 11's
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Old Mar 1, 2008 | 11:56 AM
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Originally Posted by Gary Z
Suppose a stock F-body has a 2-second sixty and a 13-second ET. A Pro Stock car has a sixty time near one second and a 6.8 second ET. Can you therefore conclude that one second off your sixty is more than 6 seconds off your ET?

It only works on the same car & engine. You can't change 1000 variables & get an accurate result.

.
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Old Mar 1, 2008 | 11:59 AM
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Originally Posted by Evilways
I ran a bit over 124mph for the 11.37 and the 1.86 60ft.
A 1.48 sixty should be a easy 10.7 at 124. My last day at the track I was leaving the line easy 1.55 60's and went 10.9 at 124
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Old Mar 1, 2008 | 12:50 PM
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Originally Posted by AFTICA
The .1 = .2 or .1 = .15 theories have never worked for me. When the 60 ft was .05 better the ET was .05 better also. When it was .1 better the ET was .1 better too. My car is super consistant and I have watched this happen many times.
If you improve .05 in the 60ft you should always gain more than .05 in the 1/4 mile.

The first 60 ft takes more time to travel than any other measurement in the 1/4 mile and is the most important, obviously if you gained .05 in the 60ft and only went .05 fast in the 1/4 it wasn't as good of a run after the 1st 60ft.

There is no set number .1 60ft = .2 1/4, but all things being equal any improvement in 60ft should produce a gain of more than 1-1 in the 1/4 ET.
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Old Mar 1, 2008 | 01:41 PM
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Originally Posted by RAGENZ28
If you improve .05 in the 60ft you should always gain more than .05 in the 1/4 mile.

The first 60 ft takes more time to travel than any other measurement in the 1/4 mile and is the most important, obviously if you gained .05 in the 60ft and only went .05 fast in the 1/4 it wasn't as good of a run after the 1st 60ft.

There is no set number .1 60ft = .2 1/4, but all things being equal any improvement in 60ft should produce a gain of more than 1-1 in the 1/4 ET.
Looking at the time slips, the intervals between the 60 ft and 330, 330 to 1/8th mile and so on all stayed more or less the same on the runs which means the runs after the 60 ft were more or less identical. The only difference would be the 60 ft time and that exact difference would show up in my final ET within a 100th of a second or so.

If the 60 ft improvement is due to more power I can see the theories working but if it's due to just better traction , as it was in my case, the improvement will be linear.
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Old Mar 2, 2008 | 02:19 PM
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Originally Posted by AFTICA
Looking at the time slips, the intervals between the 60 ft and 330, 330 to 1/8th mile and so on all stayed more or less the same on the runs which means the runs after the 60 ft were more or less identical. The only difference would be the 60 ft time and that exact difference would show up in my final ET within a 100th of a second or so.

If the 60 ft improvement is due to more power I can see the theories working but if it's due to just better traction , as it was in my case, the improvement will be linear.
That's not how it works, if you ran a faster 60ft and ended up running the same 330 and 1/8th ET then it was "slower" from the 60ft on.

If you pick up .05 in the 60ft and run the same ET at the 330, that meant it went .05 slower from the 60ft to the 330 mark, which without a doubt means the car went slower from 60ft to 330.

60ft time with all things working will always be greater than 1 to 1 for the simple fact it takes the longest to travel the 1st 60ft so the gain at the end of the track will be greater than just the gain at the 60ft mark.

Take two cars that run the identical ET down to the .00001

Have one run a 60ft .1 faster, if you think you'll just have to run .1 faster in the 1/4 to catch him you're wrong.
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