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Drag Racing Maths
dangerous - October 3rd, 2006 at 05:41 PM

Man, this site is heaven for guys like me who love numbers!

http://wallaceracing.com/Calculators.htm 

[ Edited on 3-10-2006 by dangerous ]


dangerous - October 3rd, 2006 at 05:44 PM

http://wallaceracing.com/0-60_equation.php 

This one is cool,
my 0 to 60mph time was 3.04 seconds on my 7.39@93.55mph run at Warwick.

The car is doing 64mph at the end of 2nd gear, so that is pretty close!


dangerous - October 3rd, 2006 at 05:46 PM

On my best at Warwick with the old blower set up it was 6.19@116.

That equals 1.66 sec to 60mph!

Give these a try!


dragvw2180 - October 5th, 2006 at 11:01 AM

Hey Dave,damn,now you won't get nothin done,hahhahaahah
some pretty cool programs. Mike


Baja Wes - October 5th, 2006 at 11:20 AM

Dave,

If you like numbers, and have Excel 2000 or better on your computer, then have a go of this;

http://www.offroadvw.net/exceldyno/

It predicts my friends 11second R32 GTR perfectly.

Wes


66deluxe - October 7th, 2006 at 07:41 AM

Dave that's an awesome site it's got everything, engine building should be easier for me now, thanks mate Damo.


dangerous - October 7th, 2006 at 09:14 AM

Quote:
Originally posted by Baja Wes


It predicts my friends 11second R32 GTR perfectly.

Wes



What the??!!


No wuckers Damo.


Craig Torrens - October 7th, 2006 at 10:08 AM

Cool............that means my hillclimb beetle is good for a 13.68 quarter mile.


dangerous - October 7th, 2006 at 10:27 AM

Is that with your current engine from 1/8 mile time Craig?
What speed and car weight was that?

What a rocket for a 1915 !

[ Edited on 7-10-2006 by dangerous ]


Craig Torrens - October 7th, 2006 at 10:32 AM

That was my 1999 1/8 mile time.

Trying to work out my HP are we !:P
The car has had changes since then ,would be interesting to know what my current twin plug combo would do.:thumb



[ Edited on 7-10-2006 by Craig Torrens ]


dangerous - October 7th, 2006 at 12:38 PM

Quote:
Originally posted by Craig Torrens
That was my 1999 1/8 mile time.

Trying to work out my HP are we !:P
The car has had changes since then ,would be interesting to know what my current twin plug combo would do.:thumb



[ Edited on 7-10-2006 by Craig Torrens ]



Yes it would be very interesting.
I am always interested to compare different combos,
and using weight and termanal speed always allows
apples to be compared with apples.

Either way, it is a good effort!


Baja Wes - October 7th, 2006 at 02:26 PM

Quote:
Originally posted by dangerous
What the??!!


The Excel Dyno. It predicts vehicle acceleration, and you can easily calculate the effect of different gear ratios, changing gears at different points, etc.

My friend has an R32 GTR, and he also has a dyno sheet for it. When you enter his car details into the program it predicts his quarter mile time pretty much spot on. It matches his time slips.


dangerous - October 7th, 2006 at 03:01 PM

Thanks for the explanation Wes.

For some silly reason I thought you were refering to an r32 Golf...hence the "what the!"

Must get that program in my comp.


dragvw2180 - October 8th, 2006 at 03:48 PM

some of the programs are pretty close to what I know I had in my combos,hp on old car = e/t, mph vs weight.Dave it is like we talked about ,they are great tools if you can put realistic numbers in,and use the charts for comparisons. Mike