Ok I have heard a few things:

For every tenth you gain (.1 or 1/10) then its a car length.....

For every 100 pounds its a tenth gain (.1 or 1/10).....

are those accurate?

 

running in the 13 to 16 second range, the difference is about 10ft. - you can figure about 2 tenths for each 100 lbs. if you weigh between 1700 to 2300 lbs. - 3 tenths if you weigh between 1300 to 1700 lbs. - this assumes that once you take weight out, you can still get the same amount of traction - we dropped our car from 1700lbs with driver to 1610lbs and relocated some of the weight to the front and picked up 4 tenths without any other changes.

 

Its kind of an inversly related relationship. The lighter the car is the more taking out wieght will make a difference. For instance taking 100lbs off a 2000lb car will make more of a difference then taking 100lbs off a 4000lb car. but also, the faster the car gets the harder it is to gain tenths in the 1/4. on a 16 sec car 10hp may gain u a tenth, but on a 9sec car 10hp might not make a slight difference.

but also judging car lengths is even harder. are u talking cars @ the finish line? 1/8 or 1/4? cars on the highway? it would be interesting to know though how many cars a tenth is @ the end of the track. that way at the street races you could guage pretty well if people were trying to hit u up for car length leads and all that.


Modified by DIRep at 11:33 PM 5/6/2003

 

speaking from my personal experience i went fro 1720 to 1620 with 220 hp i ran 11.6 to 11.4s.. then i drop the car weight even more to 1510 with with the same hp i war running 11.1 11.2

 

thanks for the posts. I under the relationship quite well now.....H-T