Fat arse stock car drivers

[69Cobra]

Why would it not be car+170 = race weight no matter what?

[novassdude]

Originally Posted by 69Cobra

Why would it not be car+170 = race weight no matter what?

It is the 300 pound guy just needs to find a place to get the weight out of the car. The weight of the car at the scale would be the same 3370 no matter what.

[Chris "drooze" Wertman]

Uhhhhhhh, but the weight of the car with the 300lb driver in it going down the track is still 3500, while the car with the 170lb driver is still at 3370.

Correct ? How is getting weight out of the car (other than himself) going to do it ? If the combo has to weigh 3370 with the 170 driver weight included....it has to weigh 3370 with the 170 added for the driver, if I pull 130 out I dont make minimum weight.

Is this correct or is my understanding lacking and hence this whole thread a waste of bytes ?

Originally Posted by novassdude

It is the 300 pound guy just needs to find a place to get the weight out of the car. The weight of the car at the scale would be the same 3370 no matter what.

[Mike Carr]

Drooze, using this example, if you and I both have an '09 Drag Pack Challenger. Miniumum weight for A/SA is 3,290, with driver (8 x 390 + 170). I weight approximately 260. So, my car, without me, would weigh 3,030. Lets say you weigh 160. Your car, without driver, can weigh 3,130. We still both meet the minumum A/SA weight for a DP of 3,290 pounds. Your car, by itself, would be lighter than mine, by itself, by a hundred pounds.

That's why George Bryce and Angelle whatever-her-last-name-was-at-the-time were so successful in Pro Stock Bike. Minimum weight, with rider, was 600 pounds. Since she was so light, they had to add ballast to meet the 600, and could add the ballast where and how they wanted, to make the bike work the best.

[Chris "drooze" Wertman]

That explains it then......

I have been confused about the driver weight.

The rule reads "

Class
and classification weight are determined without driver weight.
Once classification weight is calculated, 170 pounds is added for

driver to arrive at total weight. All cars are weighed with driver.
"
Classification weight and total weight seems to be my brain fart.

No wonder I thought it was so slanted....I was wrong.....I just didnt see how it was possible to slope it in such a manner.

I read it as , then 170 is added for driver weight....and that was the hiccup, my understanding and apparently incorrect was that that was an average weight added for the driver, and that number to me seemed off.

But its not that, its used as an addition to the classification weight for a "total weight" ..... I got it...

Thanks a ton, this whole thread was a waste of bytes for everyone but me

Feel free to smack in the head at will....

Originally Posted by Mike Carr

Drooze, using this example, if you and I both have an '09 Drag Pack Challenger. Miniumum weight for A/SA is 3,290, with driver (8 x 390 + 170). I weight approximately 260. So, my car, without me, would weigh 3,030. Lets say you weigh 160. Your car, without driver, can weigh 3,130. We still both meet the minumum A/SA weight for a DP of 3,290 pounds. Your car, by itself, would be lighter than mine, by itself, by a hundred pounds.

That's why George Bryce and Angelle whatever-her-last-name-was-at-the-time were so successful in Pro Stock Bike. Minimum weight, with rider, was 600 pounds. Since she was so light, they had to add ballast to meet the 600, and could add the ballast where and how they wanted, to make the bike work the best.

[Mike Carr]

I am guessing when the rule was changed away from shipping weight to being allowed to the add the 170, that 170 was an average drivers weight. This system is much more favorable to, let's say, oversized or overweight drivers. Back when the shipping weight was the minimum weight, a heavy driver competed at a disadvantage to a lighter driver.

The weight break determining a cars natural class is shipping weight divided by either NHRA or factory HP, whichever is used. In the DP case, it's now 390 NHRA rated. 3,100 is the shipping weight. 3,100/390 = 7.95. Meaning the car naturally falls into AA/SA, and can also run A. You can take the bottom weight break to figure the minimum weight, with driver, across the scales (7.5 for AA, 8 for A). So 8 x 390 + 170 = 3,290. AA weight is 7.5 x 390 + 170 = 3,095.

Never feel embarrased or apologize for asking questions. We all have stuff to learn, and much better to have an issue cleared up now, then before going to a race and making a mistake that could get you DQ'd or cause you to make a mistake and cost the car some performance and lose a race.

On the PA/OH line here, weather is getting bad...I imagine it's the same in Barberton?

[Chris "drooze" Wertman]

Yep, I just bailed from the shop , it was getting nasty.....about 2+ inches , wet and slick stuff.....

Now that being said, I think I know the answer, but thinking I know and knowing are 2 different things, I was going to clarify all this later....what about running overweight intentionally so as not to screw up factoring , is it just the simple division ?

Originally Posted by Mike Carr

I am guessing when the rule was changed away from shipping weight to being allowed to the add the 170, that 170 was an average drivers weight. This system is much more favorable to, let's say, oversized or overweight drivers. Back when the shipping weight was the minimum weight, a heavy driver competed at a disadvantage to a lighter driver.

The weight break determining a cars natural class is shipping weight divided by either NHRA or factory HP, whichever is used. In the DP case, it's now 390 NHRA rated. 3,100 is the shipping weight. 3,100/390 = 7.95. Meaning the car naturally falls into AA/SA, and can also run A. You can take the bottom weight break to figure the minimum weight, with driver, across the scales (7.5 for AA, 8 for A). So 8 x 390 + 170 = 3,290. AA weight is 7.5 x 390 + 170 = 3,095.

Never feel embarrased or apologize for asking questions. We all have stuff to learn, and much better to have an issue cleared up now, then before going to a race and making a mistake that could get you DQ'd or cause you to make a mistake and cost the car some performance and lose a race.

On the PA/OH line here, weather is getting bad...I imagine it's the same in Barberton?

[Mike Carr]

No, there is no maximum weight, just a minimum weight. As long as you're 3,290 pounds or more in A/SA, you're good. Many racers will run heavy for their class to avoid running too fast and getting HP. Heck, you can run AA/SA at A/SA weight. Just as long as you're at, or over, the Class minimum, it's all good.

The maximum weight issue was debated a few months ago, and is a topic all to itself.

[442OLDS]

Originally Posted by Mike Carr

The weight break determining a cars natural class is shipping weight divided by either NHRA or factory HP, whichever is used. In the DP case, it's now 390 NHRA rated. 3,100 is the shipping weight. 3,100/390 = 7.95. Meaning the car naturally falls into AA/SA, and can also run A. You can take the bottom weight break to figure the minimum weight, with driver, across the scales (7.5 for AA, 8 for A). So 8 x 390 + 170 = 3,290. AA weight is 7.5 x 390 + 170 = 3,095

What happens when the DP gets enough horsepower to be in AA only?

Normally,when you are substantially over the minimun weight for your class,you drop down.If you can't drop down from AA,you would be at a disadvantage racing another AA if you weren't at the minimum weight.

[Chris "drooze" Wertman]

And that is/will be a problem for DP cars, hence were scabbing every bit of weight we can, noone I know of has made minimum weight with one yet.....its getting NOTHING thats not rule required. Were going to be as light as any but realisticly I have no idea where that will be, I scraped 20+lbs of urethane body sealer and sound deadening out, we are one of the few that did this, and on and on, everything gets weighed, and removed that isnt neccesary or required.

Its a tight squeeze, and I still dont see us hitting min weight without cutting on the car, and well thats something that isnt going to happen.

Im dying to get it on a scale. When its all together, I figure were 100 fat. But thats just a guess from other DP owner observations of what they weight vs what we are not running they are, 3lbs visors and brackets, 20 lb sound deadning, 1.2 lbs rad fan. 1.5 lb unused gauge electronics, 6.8 ounces front wheel center caps(pair) and on and on....The its time to swiss cheese added brackets, Ive got the lightest wheels on the market, we went 8 3/4 for the weight, and a 904 vs protrans for same reason.....itll be interesting, Id like to have a few to spare....well see

Originally Posted by 442OLDS

What happens when the DP gets enough horsepower to be in AA only?

Normally,when you are substantially over the minimun weight for your class,you drop down.If you can't drop down from AA,you would be at a disadvantage racing another AA if you weren't at the minimum weight.