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Posted by LuvMy04GT (Member # 4791) on :
 
whats up guys, Im doing a math project for school on functions. I doing it on 1/4mi time, rwhp, and the weight of the car. It would be helpful if you guys can post your specs. Thanks a lot!

-Fonzy
 
Posted by twisted54 (Member # 1981) on :
 
Sit on it Chachi...

http://www.twisted5o.com/calulators.html


3420
438
11.56
 
Posted by Team SOLO (Member # 722) on :
 
Dont have my nitrous pass numbers for rwhp, but I do have my naturally aspirated info:

9.56
510
2650
 
Posted by 1fast281 (Member # 4670) on :
 
13.8
298rwhp ?
4050lbs
 
Posted by Team SOLO (Member # 722) on :
 
To help you out even more, I have my old car info as well. Again, naturually aspirated as I never dynoed the car on the jug:

12.0
298.7
2660
 
Posted by JoeT (Member # 298) on :
 
what formula(s) are you using?

accounting for friction (drivetrain, wind, rolling) ? accounting for gearing, powerband?

using conservation of energy? derivations of work/time or?
KE=1/2 M*V^2 is a good place to start
 
Posted by LuvMy04GT (Member # 4791) on :
 
Thanks a lot guys! That just about does it. JoeT, Im just making a function graph with the times and lb/rwhp ratio.
 
Posted by 1fast281 (Member # 4670) on :
 
quote:
Originally posted by Team SOLO:
To help you out even more, I have my old car info as well. Again, naturually aspirated as I never dynoed the car on the jug:

12.0
298.7
2660
Wow, interesting comparison to my car. So if I can shed 1500lbs I can run low 12's NA... [Big Grin]
BTW, I am using the Corral calculator, seems pretty accurate to me.
 
Posted by Team SOLO (Member # 722) on :
 
quote:
Originally posted by 1fast281:
quote:
Originally posted by Team SOLO:
To help you out even more, I have my old car info as well. Again, naturually aspirated as I never dynoed the car on the jug:

12.0
298.7
2660
Wow, interesting comparison to my car. So if I can shed 1500lbs I can run low 12's NA... [Big Grin]
BTW, I am using the Corral calculator, seems pretty accurate to me.
I dont trust the calculators. Both of my numbers above are done on actual rear wheel dynos. A light weight car and dead hooking helped me...it can help you too [Smile]
 
Posted by NO MANRZ (Member # 566) on :
 
quote:
Originally posted by LuvMy04GT:
Im just making a function graph with the times and lb/rwhp ratio.
If you want to plot both measured and theoretical plots on the same graph, use the formula ET=(5.825)*(weight/hp)^(1/3) for trap speed use MPH=(234)*(hp/weight)^(1/3) Convert all RWHP to flywheel HP first. lb/rwhp vs time should be a third order exponential curve.
 




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