No forward drive

[eclipsegse]

Ok have ump modified car is wicked fast when is tacky but when it slicks off has no drive from center off chevelle clip lf spring 700 rf 600 Lr 200 16 inch rr 225 13 inch lift arm car spring behind 4 bar 48.6 cross 56.7 rear 57.3 lf side weight also have question about 4bar radius rods when looking from rear of car bars are inline with brackets when at full drop radius rods are to the left probably to left 3 inches on both sides just moved them does this effect load on rear tires used to be almost straight before moving also this car has very aggressive tie downs in front any help would be great

[mudeater18]

Ok have ump modified car is wicked fast when is tacky but when it slicks off has no drive from center off chevelle clip lf spring 700 rf 600 Lr 200 16 inch rr 225 13 inch lift arm car spring behind 4 bar 48.6 cross 56.7 rear 57.3 lf side weight also have question about 4bar radius rods when looking from rear of car bars are inline with brackets when at full drop radius rods are to the left probably to left 3 inches on both sides just moved them does this effect load on rear tires used to be almost straight before moving also this car has very aggressive tie downs in front any help would be great

The first thing I notice is left side weight percentage is too high. Wouldn't want to be much over 54% with driver.

[dirtracr33]

you didn't list your wheel weights but your cross seems a bit low for slick and your left side seems high.
looking from the back of the car we usually toe in the rs rods a little and opposite on the left. and you could bump up rf spring 50#...didn't mention your pull bar but we run the 700-2000 progressive..just some thoughts, good luck

[eclipsegse]

Has a lift arm with 300 in spring this is a rhulman car

[eclipsegse]

Don't know wheel weights off hand car turns anywhere u want just has no drive from center off doesn't matter where u put bars doesn't help run about 120 pounds Lr 1/4 inch of preload in lift arm

[eclipsegse]

This car runs a bump stop in rf car seems a little better if we put more shims in rf bump stop would taking rf rebound out and less tie down

[mudeater18]

What does Brian recommend for left side weight percentage ?

[eclipsegse]

It's exactly where Brian wants it

[Anonymous24]

Something is fudged up here. 56 rear percentage....that car should have a ton of forward drive.

[eclipsegse]

Have tried everything on car and doesn't mKe a difference in the slick do u think taking tie down out of rf will help

[Anonymous24]

What's the rebound and compression of RF shock, and brand.

[eclipsegse]

It's a Penske it's like a 3.5/16

[Anonymous24]

16 being the rebound and 3.5 being the compression? That high of rebound wouldn't let the weight transfer back very quickly and would inhibit forward drive.

[speedbuggy]

you didn't list your wheel weights but your cross seems a bit low for slick and your left side seems high.
looking from the back of the car we usually toe in the rs rods a little and opposite on the left. and you could bump up rf spring 50#...didn't mention your pull bar but we run the 700-2000 progressive..just some thoughts, good luck

Here's his wheel weights:
LF RF
624 415

LR RR
751 610

[eclipsegse]

Those are pretty close