Im on FIRE 
is it true
I'm not too sure, but I think that's the right number used in calculations. The number varies for nitrous, supercharger, and turbo cars.
And as stated above, it gives you an ESTIMATE, it is not exactly what you will run.
And as stated above, it gives you an ESTIMATE, it is not exactly what you will run.
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There is no formula that will work for every car. But you can come up with your own when you run the 1/4. This way u can figure out what u would have ran if you ran the 1/4 instead of the 1/8
Launching!
Joined: Mar 2005
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From: H-Town
There's no way any formula could be considered anything more than an estimate. There are too many factors involved - someone mentioned aerodynamics already, and many more come into play. Sure, that number is a universally-accepted formula for a good guess, but it can't account for all the potential during the second 660 feet of track.
.02
.02
TECH Addict
Joined: Feb 2002
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From: Lewisville, Texas
The multiplication factor is off some but not to bad. Most of your acceleration in the 1/4 is accomplished in the first 1/8th mile so it's off some. My car ran a 9.23 in the 1/4 on a 5.90 1/8th. So you can see that 5.90 X 1.57=9.262 while 9.23/1.57=5.878.
I had heard and read 1.55 was the multiplier. FWIW 
We all know that using a formula is just an estimate, be the multiplier 1.54, 1.57, etc. whatever. Guess I could go through my hundreds of timeslips and test it, but I really have other things to do with my time.
We all know that using a formula is just an estimate, be the multiplier 1.54, 1.57, etc. whatever. Guess I could go through my hundreds of timeslips and test it, but I really have other things to do with my time.