Found some interesting equations to share with you guys...
The first one is a way of estimating your 1/4 time.
If you can figure out your wheel HP and total weight, you can get an estimate on your 1/4. It's not terribly accurate, but it'll give you an idea!
Too bad I can't write it out as it should be... You should be able to figure it out though!
The cube root of weight/HP times 5.825.
For example, my car weighs 2857lbs stock... I'm not sure if my engine weighs more than the F22... For this purpose, it doesn't
I weigh 200lbs, and I have maybe 50lbs of crap in my car. So total weight = 3107
My engine is 200hp stock. Add a conservative 15hp for my intake and exhaust (maybe I'm overestimating... wish I could dyno!)
Subtract 15% for drivetrain loss (32.25) and I have a wheel hp of 182.75.
So! with all that figured out, I can come up with this...
{cube rt}3017/182.75 * 5.825
so
2.5462789211953382 * 5.825 (computers are wonderful...)
Finally:
14.832 seconds (rounded down to the nearest thousandth)
Nothing else is taken into consideration, but it seems pretty accurate! I believe I could do that with good driving... we'll find out this spring!
There's also one to get your HP. It's good for figuring how powerful you have to be to achieve a desired speed.
Weight/(ET/5.825)^3
So, say i want a 12 second quarter mile (which is my ultimate goal).
3107/(12/5.825)^3 = Roughly 345 wheel HP necessary. That means I'll need 409hp to the crank! Geez!
Have fun. I know you could probably find a program online that does the same thing, but hey...
The first one is a way of estimating your 1/4 time.
If you can figure out your wheel HP and total weight, you can get an estimate on your 1/4. It's not terribly accurate, but it'll give you an idea!
Too bad I can't write it out as it should be... You should be able to figure it out though!
The cube root of weight/HP times 5.825.
For example, my car weighs 2857lbs stock... I'm not sure if my engine weighs more than the F22... For this purpose, it doesn't
I weigh 200lbs, and I have maybe 50lbs of crap in my car. So total weight = 3107My engine is 200hp stock. Add a conservative 15hp for my intake and exhaust (maybe I'm overestimating... wish I could dyno!)
Subtract 15% for drivetrain loss (32.25) and I have a wheel hp of 182.75.
So! with all that figured out, I can come up with this...
{cube rt}3017/182.75 * 5.825
so
2.5462789211953382 * 5.825 (computers are wonderful...)
Finally:
14.832 seconds (rounded down to the nearest thousandth)
Nothing else is taken into consideration, but it seems pretty accurate! I believe I could do that with good driving... we'll find out this spring!
There's also one to get your HP. It's good for figuring how powerful you have to be to achieve a desired speed.
Weight/(ET/5.825)^3
So, say i want a 12 second quarter mile (which is my ultimate goal).
3107/(12/5.825)^3 = Roughly 345 wheel HP necessary. That means I'll need 409hp to the crank! Geez!
Have fun. I know you could probably find a program online that does the same thing, but hey...
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