View Full Version : Convert 60' times to 0-60 mph
svxhunter
04-20-2004, 05:22 PM
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
04-22-2004, 11:31 AM
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 .... :D
/Sonny http://cc.smisk.us/smilies/ang_dev/angel3.gif
svxhunter
04-22-2004, 09:15 PM
That's a little rough to do when you're driving down a dragstrip!:)
b3lha
04-26-2004, 06:11 AM
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
04-26-2004, 06:55 AM
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
04-26-2004, 08:51 AM
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 (http://www.sjdsm.com/tech/0_60_calc.htm)
-Chike
Sonar
04-26-2004, 09:20 AM
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.v alue)*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 :cool:
Phast SVX
04-26-2004, 10:02 AM
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
04-26-2004, 05:36 PM
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!
Phast SVX
04-26-2004, 06:27 PM
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!!! :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
svxhunter
04-26-2004, 06:48 PM
Nope- 6.68. That was a 15.147 1/4 mile @ 91.77
Chiketkd
04-26-2004, 07:40 PM
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!!! :D :D :D
Chiketkd
04-26-2004, 07:43 PM
svxhunter read this: 0-60mph calculator explained (http://www.teamnabr.com/modules.php?name=Content&pa=showpage&pid=8)
It explains why using the 1/8 mile time gives you a reasonably accurate estimation of your true 0-60mph time.:cool:
-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
04-26-2004, 07:57 PM
School bus fully loaded = 47.325 seconds
LOL!! :D :D
Thanks!
-P
Phast SVX
04-26-2004, 09:57 PM
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!! :D
phil
svxhunter
04-27-2004, 05:09 AM
I'm glad to see it too. Maybe I can hope for similar results from my 5-speed! ;)
-P
Phast SVX
04-27-2004, 07:59 AM
Originally posted by svxhunter
I'm glad to see it too. Maybe I can hope for similar results from my 5-speed! ;)
-P
you will NOT be dissapointed trust me....your lightened cars ETA is around my 5spds NA runs.
phil
svxhunter
04-27-2004, 10:39 AM
Are you saying your 5-spd 4:11 turns 13's in the 1/4 mile without nitrous? Or are you saying your 0-60 time is in the mid 6's?
I'm looking forward to it either way!:D
Ever clocked the 5-spd on the bottle? What shot are you using?
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