TAFC Weight Distribution Help

Trying to sort out the best weight distribution on a race ready, (with driver at starting line), TAFC with total weight of 2337 lbs. ; 1007 on front and 1330 on rear; with LF = 464 lbs, ; RF = 544 lbs; LR = 689 lbs.; RR = 642 lbs. This gives me about 43% front to a 57% rear weight set up. Left front shows to be 19.85% to the RF of 23.27%. Left Rear shows to have 29.48% to the Right Rear's 27.47%. My question is do we need more/less Right Front weight and or more/less Left Rear weight as the car has shown a tendency to go to the Right upon launch. Any help or comments appreciated.

 

looks to me that your weight offset is to the wrong sides. i was always told neutral to 50 pounds more on the left front and right rear. does the car try to slide the back over to one side during the burnout? thats another way to tell if the weight is off. does the car have strange adjustable spindles on the front or are the a-frames adjustable so you can lower the left front wheel or raise the right front. another old trick is to pump one of the front tires up harder than the other if there is no adjustment. by pumping a tire up harder you increase its diameter which actually begins to blace the wheel first like you lowered the wheel. the down side to this is if you make it to big it will cause the car to pull down track...

 

Weight, Pinion?

I'm Working On A Blown Alterd W A Similar Weight Distribution. This Things Carrying The Tires Something Terrible. What About Pinion Angle In A Car Like This? Solid Frt And Rear Suspension. Motor Is 64 From Mid Plate To Rear Axle. Crank Center Is As Low As It Can Get. It Has A Converter, Powerglide Which May Be Affecting It Also

 

SHAWN,

Are you saying the car wheelies too much {high}? How long is your wheelie bar? How much tire pressure are you running. How much weight do you have on the nose?

Rapid

 

With the car up on stands and the rear tires and front tires inflated to running PSI check the circumference of the rear tires and front tires.
If they are different you may need to add some air pressure to the tires that are different.
If the car is hooking to the right try adding a little pressure to the right rear tire or the right front tire. I would start with the right rear tire first.
Also if your are running a single wheel wheelie bar make sure it is centered on the car. If it is shifted to the left or right it will cause handiling problems at launch.

 

Wheelie

It Has A 80 Inch Bar, Right At 1100 On The Frt End. He Keeps Adding-removing Some Lead. Tried From 5.5 To 6.25 Tire Pressure, A 34.5 Goodyear 1022.but The Driver Sits Pretty Upright,big Guy Also. And Has A Wing Off The Rollbar, I'm Thinking That May Put The Center Of Gravity High
It Picks The Wheels Right Up At The Hit, And The Front End Is Light, Bouncing To Around 300 Feet. Not Making Ton Of Power, Should Run 6.50's Id Think.

 

Yep Mike Two Different Cars W Two Different Problems

 

I was going to suggest it in my 1st post but didn't. Shawn why don't you start a new thread and we can discuss. I am sure there are guys here who will help you. That will keep both treads on topic.

Rapid

 

When we were building chassis, ( F/C ) we would build in a pre load of 3/8 of an inch on the right front weel,( it would be lower that the other 3 weels by 3/8 " ) of corse that was then and this is now, with the chassis the way they are now, flex fliers, i would have to say that you will have to check your preload every now and then, because the chassis today twist and will take a set after a few races, (The left front weel will twist up from the tork of the motor) so you have to monator that at all times, If you watch my brothers car it makes you want to go hummmmmmmmmmmm. Just my 2 cents.