Does this formula work for anyone here?

Road race, Auto X, or the Drag Strip

Does this formula work for anyone here?

Postby TomsGT4 » Tue Apr 25, 2006 10:51 pm

http://forums.joeuser.com/Forums.aspx?F ... &AID=73731

Stating:
Speed at 1/4 mile point = 220 * (HP / Weight) ^.3138
Quarter Mile time = 6.9446 X (weight / HP)^.2841


I ended up figuring 14.04 sec quarter mile, 101.07mph
For the mods I have I'd say it's probably very close to that.

What do you think?
Does it work?
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Postby CMS-GT4 » Tue Apr 25, 2006 10:54 pm

I do not think that works.

You have to take elevation into concidertaion, the track itself, temp, tires, and driver. I think there are too many varibles for that equation to work
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Postby TomsGT4 » Wed Apr 26, 2006 2:57 am

Well, looked into this a little more & tried sock curb weight (3272lbs) & stock 200hp.
15.36s @ 91.5mph.

That sounds like ideal conditions to me. Ideal track, driver, constant elevation, etc...
I think someone might have put together a lot of stats from standing around a track, timing & weighing a bunch of cars.
Maybe even technicians that design & test this kind of thing. Yeah...R&D is cool.

The only thing is torque should be a factor, that maybe somehow be responsible for some of the constants in the equation.
Tom
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Postby LechacZ » Wed Apr 26, 2006 11:10 pm

I'd say Patrick Hale's Formulas work best for the numbers i have. they are pretty much dead on
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