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-   -   How car weight works (https://classracer.com/classforum/showthread.php?t=84071)

Coleydog 01-28-2023 11:29 PM
How car weight works
 
Ok I’ve read the specks on the NHRA site to get my HP and base car weight. But I’m still to dense to get it in my head right. 70 Duster 340 me 250 lbs. D is 10.0 factor E is 10.50 and F is 11.0. Does that mean to run F at 11.0 times 299 for HP then add 170 pounds (- 80 lbs me)to get car weight? Any help will be appreciated!

Alan Roehrich 01-28-2023 11:54 PM
Re: How car weight works
 
Quote:
Originally Posted by Coleydog (Post 674969)
Ok I’ve read the specks on the NHRA site to get my HP and base car weight. But I’m still to dense to get it in my head right. 70 Duster 340 me 250 lbs. D is 10.0 factor E is 10.50 and F is 11.0. Does that mean to run F at 11.0 times 299 for HP then add 170 pounds (- 80 lbs me)to get car weight? Any help will be appreciated!



What you posted looks like you have a handle on it. It's pretty simple. It's your NHRA HP factor multiplied by the weight break for the class. So, yes, 11x299+170. And you simply subtract the amount you weigh over 170 from the weight of the car.


Good luck and have fun!

Mark Yacavone 01-29-2023 12:30 AM
Re: How car weight works
 
Weight breaks
D/S -9.5, E/S- 10, F/S-10.5

Larry Hill 01-29-2023 10:07 AM
Re: How car weight works
 
Is your notch a driver?

Coleydog 01-29-2023 10:10 AM
Re: How car weight works
 
Quote:
Originally Posted by Mark Yacavone (Post 674972)
Weight breaks
D/S -9.5, E/S- 10, F/S-10.5
Well I got the weights wrong big time lol. That's a whole lot better. Thanks for the answer

Coleydog 01-29-2023 10:23 AM
Re: How car weight works
 
Quote:
Originally Posted by Larry Hill (Post 674976)
Is your notch a driver?
Very far from it, just a shell and rusty, one of the reasons I did the Duster.

Rob Petrie E395 01-29-2023 12:45 PM
Re: How car weight works
 
Goto the class racer info website. And make an account. Once you enter your car info. It’ll figure it all out for you.natural, lighter and heavier classes. But you have to register (it’s easy). I’m embarrassed to say. I’ve been looking at that website for a long long time. And just registered last week. I had no idea how much more info there was available. If you just register and log in.

Coleydog 01-29-2023 02:29 PM
Re: How car weight works
 
Quote:
Originally Posted by Rob Petrie E395 (Post 674990)
Goto the class racer info website. And make an account. Once you enter your car info. It’ll figure it all out for you.natural, lighter and heavier classes. But you have to register (it’s easy). I’m embarrassed to say. I’ve been looking at that website for a long long time. And just registered last week. I had no idea how much more info there was available. If you just register and log in.
I did that a few years back but I’ll return to see if I have that correct

Coleydog 01-29-2023 09:21 PM
Re: How car weight works
 
Ok what I come up with,
D/= car and me 3011 just car 2931
E/= car and me 3160 ‘’ ‘’ 3080
F/= 3310 3230
I’ll add 20 pounds at least to be on safe side

dragracerray 01-30-2023 10:56 AM
Re: How car weight works
 
I don't think that is right. Correct me if I am wrong guys. Not sure if 3160 gets rounded up to 3165 or not.

car plus round up weight of
driver to nearest car without
weight 5 pounds 250 lb driver
D 9.5 multiplied by 299 plus 170 3010.5 3015 2765
E 10 multiplied by 299 plus 170 3160 3160 2910
F 10.5 multiplied by 299 plus 170 3309.5 3310 3060


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