Qualifying with no AHFS - Page 12

Jeff Teuton · 05-09-2016, 09:29 PM

I think my dues are up to date. I got more paid in dues than I have in Social Security.

SS734 · 05-10-2016, 07:46 PM

Can anyone explain why shipping weights in gt can only be adjusted plus or minus 250 lbs to move up or down in classes but in regular superstock its now unlimited? Didnt gt get the 250 rule based off the regular superstock rule? It must have been inadvertently deleted at some point?

SStockDart · 05-11-2016, 12:13 AM

Quote:

Originally Posted by SS734

Can anyone explain why shipping weights in gt can only be adjusted plus or minus 250 lbs to move up or down in classes but in regular superstock its now unlimited? Didnt gt get the 250 rule based off the regular superstock rule? It must have been inadvertently deleted at some point?

I believe that you are "misreading " the information. The 250 pound adjustment for GT is to determine your "natural" class......then you can move up or down one class. In stock and superstock, your natural class is what it is, weight vs horsepower...then you can move up or down one class with weight adjustments.

SS734 · 05-11-2016, 03:25 AM

FOR GT
I've actually re-read it several times. In GT you use the heaviest shipping wt for year of vehicle claimed, then you divide it by the NHRA factored HP for engine claimed. This would give you the natural class for your GT combo. Then you can then add or remove a maximum of 250lbs to move up or down in classes.

I don't see where the GT rules allow you to run at the top of any class. You can only add or remove a max of 250lbs to fit your car in the class. so your car could fall in the middle of the lightest class with 250lbs removed for example.

FOR SUPER STOCK
Now for some reason in regular Super Stock, the maximum weight removal of 250 was "removed or omitted from the rule book" and everyone is allowed to move up one class or down one class and run at the class minimum.

For example a 3379 shipping wt car with a 300 NHRA rating would be a natural SS/J class at 11.26. Now the car can go up a class to SS/I a 10.00 class. 10.00 x 300 = 3000. so now this car is able to remove 379 lbs and run at the top of the class.

How fast would your car run if you could remove 379lbs?

JeremyDuncan · 05-11-2016, 08:59 AM

Traditional Super Stock never has had the 250lbs adjustment rule.

Use to be you could run your natural class and next heaviest. If your car's natural class fell in the middle your were not allowed to go to the bottom of the class.

Per your previous example Shipping wt of 3379 ÷ by hp factor of 300= Power to weight factor of 11.26. Natural Ss/J car. Minimum wt. for Ss/J would be 3379 + 170 for driver 3549lbs rounded down to nearest 5lbs. 3545lbs Ss/J minimum. Or you could move down to next heaviest class. SS/K 300hp x 12lbs class plus 170lbs for driver. SS/K min. Wt. 3770lbs.

This is why you saw more diverse cars in traditional SS then present day because some different models of cars "Fit" classes better than others.

It was a complicated system. So NHRA changed it to you could go to the bottom of your natural class or one class heavier.

Stayed that way for about 5 years. Then it was changed to traditional SS can run their natural class, next class heavier, and next class lighter. You can go to bottom of class.

Mike Pearson · 05-11-2016, 02:27 PM

Quote:

Originally Posted by JeremyDuncan

Traditional Super Stock never has had the 250lbs adjustment rule.

Use to be you could run your natural class and next heaviest. If your car's natural class fell in the middle your were not allowed to go to the bottom of the class.

Per your previous example Shipping wt of 3379 ÷ by hp factor of 300= Power to weight factor of 11.26. Natural Ss/J car. Minimum wt. for Ss/J would be 3379 + 170 for driver 3549lbs rounded down to nearest 5lbs. 3545lbs Ss/J minimum. Or you could move down to next heaviest class. SS/K 300hp x 12lbs class plus 170lbs for driver. SS/K min. Wt. 3770lbs.

This is why you saw more diverse cars in traditional SS then present day because some different models of cars "Fit" classes better than others.

It was a complicated system. So NHRA changed it to you could go to the bottom of your natural class or one class heavier.

Stayed that way for about 5 years. Then it was changed to traditional SS can run their natural class, next class heavier, and next class lighter. You can go to bottom of class.

Most traditional Super Stock cars can not move up and down from their natural class especially in the full pound classes due to the amount od weight needed to be removed or added. in a 300 hp combo to move one class up and one class down in a full pound class would be a 600 lb swing from one down to one up. A half pound class would be 300 lb swing which is somewhat doable

05-09-2016, 09:29 PM	#111
Jeff Teuton VIP Member Join Date: Jan 2002 Location: Houma, LA Posts: 2,717 Likes: 2 Liked 325 Times in 50 Posts	Re: Qualifying with no AHFS I think my dues are up to date. I got more paid in dues than I have in Social Security. __________________ Jeff Teuton 4022 STK

05-10-2016, 07:46 PM	#112
SS734 Junior Member Join Date: Apr 2016 Posts: 27 Likes: 5 Liked 4 Times in 3 Posts	Re: Qualifying with no AHFS Can anyone explain why shipping weights in gt can only be adjusted plus or minus 250 lbs to move up or down in classes but in regular superstock its now unlimited? Didnt gt get the 250 rule based off the regular superstock rule? It must have been inadvertently deleted at some point?

05-11-2016, 03:25 AM	#114
SS734 Junior Member Join Date: Apr 2016 Posts: 27 Likes: 5 Liked 4 Times in 3 Posts	Re: Qualifying with no AHFS FOR GT I've actually re-read it several times. In GT you use the heaviest shipping wt for year of vehicle claimed, then you divide it by the NHRA factored HP for engine claimed. This would give you the natural class for your GT combo. Then you can then add or remove a maximum of 250lbs to move up or down in classes. I don't see where the GT rules allow you to run at the top of any class. You can only add or remove a max of 250lbs to fit your car in the class. so your car could fall in the middle of the lightest class with 250lbs removed for example. FOR SUPER STOCK Now for some reason in regular Super Stock, the maximum weight removal of 250 was "removed or omitted from the rule book" and everyone is allowed to move up one class or down one class and run at the class minimum. For example a 3379 shipping wt car with a 300 NHRA rating would be a natural SS/J class at 11.26. Now the car can go up a class to SS/I a 10.00 class. 10.00 x 300 = 3000. so now this car is able to remove 379 lbs and run at the top of the class. How fast would your car run if you could remove 379lbs?

05-11-2016, 08:59 AM	#115
JeremyDuncan Member Join Date: Apr 2010 Posts: 266 Likes: 1,184 Liked 355 Times in 80 Posts	Re: Qualifying with no AHFS Traditional Super Stock never has had the 250lbs adjustment rule. Use to be you could run your natural class and next heaviest. If your car's natural class fell in the middle your were not allowed to go to the bottom of the class. Per your previous example Shipping wt of 3379 ÷ by hp factor of 300= Power to weight factor of 11.26. Natural Ss/J car. Minimum wt. for Ss/J would be 3379 + 170 for driver 3549lbs rounded down to nearest 5lbs. 3545lbs Ss/J minimum. Or you could move down to next heaviest class. SS/K 300hp x 12lbs class plus 170lbs for driver. SS/K min. Wt. 3770lbs. This is why you saw more diverse cars in traditional SS then present day because some different models of cars "Fit" classes better than others. It was a complicated system. So NHRA changed it to you could go to the bottom of your natural class or one class heavier. Stayed that way for about 5 years. Then it was changed to traditional SS can run their natural class, next class heavier, and next class lighter. You can go to bottom of class.