Convert 60' times to 0-60 mph
 

Anyone know if there is a formula or method for converting 60' times to 0-60 mph? Even an estimate?

I've got good timeslips for the 60' time, but the speedo is off enough that it would be a total guess how quickly we can get it from 0-60 mph.

Thanks!

-Paul

Re: Convert 60' times to 0-60 mph
 

-Calibrate your speedo with a GPS :) , I have .... :D


/Sonny http://cc.smisk.us/smilies/ang_dev/angel3.gif

That's a little rough to do when you're driving down a dragstrip!:)

Simple answer:

0-60mph time = 0.733 x (60'time squared)

It won't be entirely accurate since it assumes constant acceleration.

Maths below so it can be verified:

Your time to travel 60 feet from standstill is "t" seconds.

First we calculate distance in metres (s):
s = 60feet x 0.3048 = 18.288metres

Then we use the formula s=ut+0.5*a*t*t

ut is initial speed * time (= zero) so we can ignore that bit.

so the formula is

18.288 = 0.5 * a * t * t

which simplifies to:

a = 36.576 / (t * t)

This will give your acceleration (a) in metres per second per second.

Then we use that value in another formula v = u + a * T.

u is initial speed (zero) so we ignore that bit and rearrange the formula as T=v/a. I'm using a capital T to distinguish it from the t we used in the other formula.

v = 60mph * 0.44704 = 26.8224 metres per second.

so your 0-60 time (T) = 26.8224 / (36.576 / t * t )

which simplifies to:

T=(26.8824 * t * t) / 36.576
T=0.733(recurring) * t * t

Phil.

I modified my above formula using your 13.8 quarter mile figure.

Came out at 6.36 seconds 0-60.

a = 402.366 metres / 0.5 * 13.8 * 13.8 = 4.226 metres per second per second.

T = 26.8824 / 4.226 = 6.36

But as I said before, the formulas assume constant acceleration, wheras this is never the case in reality. Your speedo may be more accurate than this method.

Phil.

svxhunter this may not be what you want, but here's a link to a calculator that estimates your 0-60 time from your 1/8 mile time: 0-60mph Calculator

-Chike

Very nice collection of calculators there :)


if you wan't a "own", just paste this to a file and call it 0-60.htm


/Sonny :cool:

WooHoo.
My crappy clutch run yielded:
1/8 time: 9.701
1/8 trap: 74.68
0-60: 6.23


Cant wait to see what the new engine and clutch do :)
phil

Holy Mackeral!

1/8 time: 8.901
1/8 trap: 79.04
0-60: 5.13 !!!

Is that right? I can't believe it!!! :D :D :D

Am I doing this right? An entire day full of timeslips yields sub 6 second times on every single pass, except the NA passes which are still mid 6 seconds.

That is exciting!

You guys are great- Thanks for the help!

was your NA 0-60 better then mine?
phil

Nope- 6.68. That was a 15.147 1/4 mile @ 91.77

That's right! Your SVX was flying...

I put the 1/8 mile numbers from my 13.64 run (8.816 @ 81.53) in the Lightning into the calculator and got a 4.77 time. Not bad for my ol' 4600lb truck!!! ;)

-Chike

svxhunter read this: 0-60mph calculator explained

It explains why using the 1/8 mile time gives you a reasonably accurate estimation of your true 0-60mph time.:cool:

-Chike

School bus fully loaded = 47.325 seconds

LOL!! :D :D

Thanks!

-P

Good to see my money went to some good!! :D
phil