Weight vs 60ft question.
Thread Starter
8 SEC SLOPPY SHOT!!!
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From: lombard,IL
Weight vs 60ft question. Im just trying to fugure if there is a formula to see how much weight say 100 pounds and you 60ft 1.35 how much better will it 60ft being 100 pounds lighter?
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From: 8000DA Land
maybe i'm not the qualified person to answer this but this are my experiences..
I still have street tires.. Stock size (16") BFG KDWs..
Stock weight my car did 2.4 60fts
Without Spare/Jack/Rear Seats/Rear Belts = 2.4 60fts
THEN
Without AC/front swaybar(already was disconected) = 2.2 60fts
So if not mistaken.. depends from where you take the weight off?
I still have street tires.. Stock size (16") BFG KDWs..
Stock weight my car did 2.4 60fts
Without Spare/Jack/Rear Seats/Rear Belts = 2.4 60fts
THEN
Without AC/front swaybar(already was disconected) = 2.2 60fts
So if not mistaken.. depends from where you take the weight off?
Thread Starter
8 SEC SLOPPY SHOT!!!
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From: lombard,IL
I know theres more to it than just taking weight out.There is suspenion that needs to be tuned to compensate for weight change.Im just looking for a ballpark figure.
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F=ma
figure out what force is with your old mass and acceleration, then change your mass, keep the force the same... and viola.. new acceleration
This forum isnt for BS'ers and "rule of thumb" Its basic physics, if you want ot get into it deeper you can figure out your new center of gravity, weight transfer, tire coefficent of friction etc....
figure out what force is with your old mass and acceleration, then change your mass, keep the force the same... and viola.. new acceleration
This forum isnt for BS'ers and "rule of thumb" Its basic physics, if you want ot get into it deeper you can figure out your new center of gravity, weight transfer, tire coefficent of friction etc....
tuff: so take your current mass devided by your witnessed acceleration and this will equal your force. Now subtract the mass you want to remove from your current mass, then devide your calculated force by the new mass and you have it. In theory anyhow.
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From: Upstate NY
Originally Posted by tuff
Im just trying to fugure if there is a formula to see how much weight say 100 pounds and you 60ft 1.35 how much better will it 60ft being 100 pounds lighter?
http://performancetrends.com/drag_racing_analyzer.htm
There's a lot more to this than F=m/a (or a=F/m) is you want to see small changes. Once you get the simulator to accurately reflect what your car is doing, you can make those weight changes or stickier tire changes, etc. You'll have to tell it where the weight came from (front or rear).
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11 Second Club
Joined: Oct 2005
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From: Long Island
One of the biggest factors in a 60' time is weight and torque output. Torque is what gets things moving. Granted if you're lighter you will ET better, but the more torque you can muster the better you will get out of the gate,as long as your chassis is set up for it.
I have a formula I used. I calcualted the average constant acceleration from the 60ft time. Multiply that by the ratio of the difference in weight. Back track with alegebra to get the 60ft time.
stock motor LT1 pulled 1.7's some weight reduction.
same motor/car just added LTs and removed alot of weight, ie about 200#s, went 1.65.
It is just too hard to compute, you have weight, traction, and etc to work with. good luck figuring that out!!
same motor/car just added LTs and removed alot of weight, ie about 200#s, went 1.65.
It is just too hard to compute, you have weight, traction, and etc to work with. good luck figuring that out!!
i have a near stock weight ws.6 m6 ta. my 60 foots are low 1.5's high 1.4's i go between 1.47 to 1.51-1.55 all motor all day. 26x11.5x15 m&h racemaster cheeter slicks www.intercotire.com
