Burnout time difference?
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Instructor
Joined: Nov 2004
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Burnout time difference?
Say that two identical corvettes driven by drivers with identical skill are about to run the 1/4 mile. The only difference is one car does a burnout, while the other does not. How much of a difference will there be in their 1/4 times?
Race Director
Joined: Aug 2000
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From: Central Florida
Originally Posted by StoCK
Say that two identical corvettes driven by drivers with identical skill are about to run the 1/4 mile. The only difference is one car does a burnout, while the other does not. How much of a difference will there be in their 1/4 times?
But my Z06 (M12 tranny) with me driving on stock tires, a good burnout improves the 60' by about one tenth. On drag radials, the burnout is worth at least two tenth in the 60' and another tenth gain in holding the shifts.
Others can speak to C5s with run-flats.
Ranger
Drifting
Joined: Aug 2000
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From: Chapin SC
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Burnouts serve two primary functions. The first is to clean off the tires - dirt, grass, small pebbles, etc. The second is to raise the temperature of the tread surface to match the track conditions (+25 degrees is about ideal on ET Streets). On tires designed to drag race the increased temperature brings sticky chemicals to the top of the tread surface. On stock DOT tires cleaning the tread will probably help but raising the tread temperature is not going to get you much if anything.
Burning Brakes
Joined: Mar 2002
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From: highland village texas
on DR the difference was a 1.7 vs a 1.9 60ft....also made difference on getting wheel-hop or not....on stock tires I never noticed much difference on 60ft but did notice less wheel-hop after warming them up a little.
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Le Mans Master
Joined: Sep 2004
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From: Shiloh Ohio
I am guessing you are talking about stock runflats. I have read many posts on the forum that heating up a runflat will not help your launch. My personal experience when I was all stock was my tires would spin on the launch if I did no burn out. If I heated up the runflats I could launch with no tire spin. It made very little difference in ET or 60 foot times but it did make a difference in consistency of my ET. I found that if I spin it was hard to predict my ET consistently so I chose to do a mild burnout each run. Part of my experience though is at the track I race it is next to impossible to drive around the burn out box. So a burn out was necessary or you had to launch with wet tires. Just my two cents.
Safety Car
Joined: Jun 2003
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From: Sunshine State
Originally Posted by Ranger
There are variables. (1) what tires (2) tranny type (3) power of the car (4) track prep.
But my Z06 (M12 tranny) with me driving on stock tires, a good burnout improves the 60' by about one tenth. On drag radials, the burnout is worth at least two tenth in the 60' and another tenth gain in holding the shifts.
Others can speak to C5s with run-flats.
Ranger
But my Z06 (M12 tranny) with me driving on stock tires, a good burnout improves the 60' by about one tenth. On drag radials, the burnout is worth at least two tenth in the 60' and another tenth gain in holding the shifts.
Others can speak to C5s with run-flats.
Ranger
Run flats would be a waste of time with anything over one spin for cleaning. My almost stock C5 has no traction issues with DR's. Burnouts aren't necessary. I think only high horsepower applications require a good burnout.
His question can't be answered.
Race Director
Joined: Aug 2000
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From: Central Florida
Originally Posted by Korreck
He said identical cars. So the only question is what type of tire andf how much power they have.
Ranger
Safety Car
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From: Sunshine State
Originally Posted by Ranger
Original poster is collecting data from members with a variety of set-ups. I tried to state the variables that contribute to "how much difference" the burn-out would make. For example, your rwhp but with an M6 tranny WOULD see an improvement from the burnout, which you do not with your A4. Sorry if I was not clear.
Ranger
Ranger
I read that as two identical cars. I don't see a variety of setups. I'll get some sleep and maybe I'll see it in the morning.
Le Mans Master
Joined: Sep 2004
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From: Shiloh Ohio
Originally Posted by Korreck
I'm sorry Ranger, but I don't get it. Maybe I need some sleep. This is what he posted: "Say that two identical corvettes driven by drivers with identical skill are about to run the 1/4 mile. The only difference is one car does a burnout, while the other does not. How much of a difference will there be in their 1/4 times?"
I read that as two identical cars. I don't see a variety of setups. I'll get some sleep and maybe I'll see it in the morning.
I read that as two identical cars. I don't see a variety of setups. I'll get some sleep and maybe I'll see it in the morning.
Safety Car
Joined: Jun 2003
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From: Sunshine State
Originally Posted by shurite44
Bob, he is saying that this identical car could be two identical A4s, or two identical M6s, or two identical Z06s.
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From: Lackey, my own dragstrip VA.
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I can answer...........
Track rental 4/22/05
Me racing our 00' Vert within 10 minutes of my Wifes last run.
Hers............12.58@111.83 with a 1.98 60' ( no burnout for her
)
Mine............12.29@111.33 with a 1.72 60' ( burnout)
Bob
More info:
http://forums.corvetteforum.com/show...21&forum_id=90
http://forums.corvetteforum.com/show...4&page=1&pp=20
Track rental 4/22/05
Me racing our 00' Vert within 10 minutes of my Wifes last run.
Hers............12.58@111.83 with a 1.98 60' ( no burnout for her
)Mine............12.29@111.33 with a 1.72 60' ( burnout)
BobMore info:
http://forums.corvetteforum.com/show...21&forum_id=90
http://forums.corvetteforum.com/show...4&page=1&pp=20