Convert 60' times to 0-60 mph

[svxhunter]

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

[Sonar]

Originally posted by svxhunter
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

-Calibrate your speedo with a GPS , I have ....


/Sonny

[svxhunter]

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

[b3lha]

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.

[b3lha]

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.

[Chiketkd]

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

[Sonar]

Very nice collection of calculators there


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

<p align=center><B>Zero to 60 Calculator.</B></p><form name=sixty>

Input 1/8th mile track time: <input type=text name="time" value="" size="5"> (in seconds)
<br><br>

Input 1/8th mile trap speed: <input type=text name="speed" value="" size="5"> (in MPH)

<input type=button name=submit value="Calculate" onclick="document.sixty.result.value=(Math.round((document.sixty.time.value*3600)/(document.sixty.speed.value*document.sixty.speed.value)*100))/100"> <input type="Reset">
<br><br>
Your 0 to 60 MPH time is approximately:
<input type=text name="result" value="" size="5">
</form>

/Sonny

[Phast SVX]

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

[svxhunter]

Holy Mackeral!

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

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

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!

[Phast SVX]

Originally posted by svxhunter
Holy Mackeral!

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

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

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

[svxhunter]

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

[Chiketkd]

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

Originally posted by svxhunter
Holy Mackeral!

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

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

[Chiketkd]

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.

-Chike

Originally posted by svxhunter
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!

[svxhunter]

School bus fully loaded = 47.325 seconds

LOL!!

Thanks!

-P

[Phast SVX]

Originally posted by svxhunter
Nope- 6.68. That was a 15.147 1/4 mile @ 91.77

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